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Zhang W, Li C, Lv Y, Wei S, Hu Y. Synergistic antifungal mechanism of cinnamaldehyde and nonanal against Aspergillus flavus and its application in food preservation. Food Microbiol 2024; 121:104524. [PMID: 38637086 DOI: 10.1016/j.fm.2024.104524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/11/2024] [Accepted: 03/23/2024] [Indexed: 04/20/2024]
Abstract
Aspergillus flavus colonization on agricultural products during preharvest and postharvest results in tremendous economic losses. Inspired by the synergistic antifungal effects of essential oils, the aims of this study were to explore the mechanism of combined cinnamaldehyde and nonanal (SCAN) against A. flavus and to evaluate the antifungal activity of SCAN loading into diatomite (DM). Shriveled mycelia were observed by scanning electron microscopy, especially in the SCAN treatment group. Calcofluor white staining, transmission electron microscopy, dichloro-dihydro-fluorescein diacetate staining and the inhibition of key enzymes in tricarboxylic acid cycle indicated that the antifungal mechanism of SCAN against A. flavus was related to the cell wall damage, reactive oxygen species accumulation and energy metabolism interruption. RNA sequencing revealed that some genes involved in antioxidation were upregulated, whereas genes responsible for cell wall biosynthesis, oxidative stress, cell cycle and spore development were significantly downregulated, supporting the occurrence of cellular apoptosis. In addition, compared with the control group, conidia production in 1.5 mg/mL DM/cinnamaldehyde, DM/nonanal and DM/SCAN groups were decreased by 27.16%, 48.22% and 76.66%, respectively, and the aflatoxin B1 (AFB1) contents decreased by 2.00%, 73.02% and 84.15%, respectively. These finding suggest that DM/SCAN complex has potential uses in food preservation.
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Affiliation(s)
- Wei Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Cuixiang Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Yangyong Lv
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Shan Wei
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Yuansen Hu
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China; Food Laboratory of Zhongyuan, Luohe, 462300, Henan, China.
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Zhou Q, Song J, Lv N, Shi H, Wang J. Fully dispersed cobalt diatomic site with significantly improved Fenton-like catalysis performance for organic pollutant degradation. J Colloid Interface Sci 2024; 662:1005-1015. [PMID: 38387362 DOI: 10.1016/j.jcis.2024.02.097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 01/31/2024] [Accepted: 02/12/2024] [Indexed: 02/24/2024]
Abstract
A novel strategy for better catalytic performance in terms of precisely tuning the metal atom number of active centers is gradually getting attention. In this paper, the Co atom pair sites on N-doped porous carbon was engineered. The binuclear Co2 site structure was identified by aberration-corrected scanning transmission electron microscopy and X-ray absorption spectroscopy. As expected, the Co2NC display an outstanding Fenton-like catalysis activity in tetracycline degradation with turnover frequency exceeding 0.91 min-1 that is approximately 4 times higher than the conventional CoN4 site. The EPR tests indicated that the ROS strength stimulated by the binuclear site was much stronger than that of single site. Theoretical density functional theory calculations reveal that the optimized adsorption configuration is the O1 of peroxymonosulfate (PMS) interacting with two Co atoms, leading to stronger interaction effect and electron transfer for PMS comparing to single atom sites.
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Affiliation(s)
- Qi Zhou
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601 China; Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601 China.
| | - Jiaojiao Song
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601 China; Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601 China
| | - Na Lv
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601 China; Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601 China
| | - Huizhong Shi
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800 China
| | - Junyi Wang
- School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601 China; Centre for Atomic Engineering of Advanced Materials, Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education, Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province, Anhui University, Hefei 230601 China
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Zhang BB, Bai CW, Chen XJ, Sun YJ, Yang Q, Chen F. 2D/2D heterojunctions for rapid and self-cleaning removal of antibiotics via visible light-assisted peroxymonosulfate activation: Efficiency, synergistic effects, and applications. J Hazard Mater 2024; 468:133816. [PMID: 38377912 DOI: 10.1016/j.jhazmat.2024.133816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/22/2024]
Abstract
Developing eco-friendly and efficient technologies for treating antibiotic wastewater is crucial. Traditional methods face challenges in incomplete removal, high costs, and secondary pollution. Heterogeneous peroxymonosulfate (PMS) activation assisted by visible light shows promise, but suitable activators remain a huge challenge. Here, we synthesized cost-effective carbon nitride/bismuth bromide oxide (CN/BiOBr) heterojunctions. Such a heterojunction achieved rapid PMS activation, achieving over 90.00% tetracycline (TC) removal only within 1 min (kobs of 2.23 min-1), surpassing previous systems by nearly 1-2 orders of magnitude and even remarkably superior to the popular single-atom catalysts. The system exhibited self-cleaning properties, maintaining activity after 8 cycles and stability across a wide pH range (3.01 to 9.03). Quenching experiments and theoretical calculations elucidated the exclusive •O2- species involvement and removal pathways. Eco-toxicity assessment and total organic carbon results confirmed simultaneous degradation, detoxification, and mineralization. This system also showed excellent resistance to environmental factors, e.g., coexisting anions, varying pH, and water sources, and demonstrated potential in coking and medical wastewater purification. This study presents a novel technique for rapidly decontaminating antibiotic wastewater through visible light-assisted PMS activation and introduces innovative bionic catalytic oxidation combining light and darkness for practical applications.
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Affiliation(s)
- Bin-Bin Zhang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China
| | - Chang-Wei Bai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China
| | - Xin-Jia Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China
| | - Yi-Jiao Sun
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China
| | - Fei Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
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Zhang X, Gao B, Rao R, Bi F, Li C, Yue K, Wang Y, Xu J, Feng X, Yang Y. Defects materials of Institut Lavoisier-125(Ti) materials enhanced photocatalytic activity for toluene and chlorobenzene mixtures degradation: Mechanism study. J Colloid Interface Sci 2024; 660:423-439. [PMID: 38244508 DOI: 10.1016/j.jcis.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/14/2023] [Accepted: 01/02/2024] [Indexed: 01/22/2024]
Abstract
In this paper, the effect of three monocarboxylic acids on MIL-125 synthesis was systematically investigated and the results were discussed in detail. X-ray diffractometry (XRD) and nitrogen adsorption-desorption curves indicated that small molecule acids (acetic acid, propionic acid and butyric acid) affected the morphology of MIL-125 and induced lamellar pores and structural defects in the crystals. Thermogravimetric measurements confirmed the presence of acid-regulated defective metal-organic frameworks (MOFs). Electrochemical tests and density function theory calculations indicated that acid modulation could change the forbidden bandwidth of the material. The acid modification strategy effectively promoted the transfer of photogenerated electrons and enhanced the adsorption and activation of O2 and H2O molecules, generating reactive radicals. The modified MOFs also showed excellent performance in the removal of mixed toluene and chlorobenzene. The degradation pathways of the mixture were analyzed by in situ infrared (IR) and gas chromatography-mass spectrometry (GC-MS). The mixture was converted to chlorophenolic intermediates in the presence of reactive oxygen species, further decomposed to form ethers and ethanol, and finally formed small molecules such as carbon dioxide and water. A feasible method was provided for the preparation of photocatalysts for the treatment of mixed VOCs.
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Affiliation(s)
- Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China; Shanghai Non-carbon Energy Conversion and Utilization Institute, Shanghai 200240, China.
| | - Bin Gao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Renzhi Rao
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Fukun Bi
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Chenyu Li
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ke Yue
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yuxin Wang
- Institute of Applied Biotechnology, Taizhou Vocation & Technical College, Taizhou, Zhejiang 318000, China
| | - Jingcheng Xu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiangbo Feng
- Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China.
| | - Yiqiong Yang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
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Qi L, Xiao X, Liu T, Ren Z, Ren W, Gao Q, Liu M, Wei P, Lai Y, Yao W, An H, Zhang L, Li C, Luo S, Luo X. Functionally responsive hydrogels with salt-alkali sensitivity effectively target soil amelioration. Sci Total Environ 2024; 918:170350. [PMID: 38307264 DOI: 10.1016/j.scitotenv.2024.170350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/28/2023] [Accepted: 01/19/2024] [Indexed: 02/04/2024]
Abstract
The long-standing crisis of soil salinization and alkalization poses a significant challenge to global agricultural development. High soil salinity-alkalinity, water dispersion, and nutrient loss present major hurdles to soil improvement. Novel environmentally friendly gels have demonstrated excellent water retention and slow-release capabilities in agricultural enhancement. However, their application for improving saline-alkali soil is both scarce and competitive. This study proposes a new strategy for regulating saline-alkali soil using gel-coated controlled-release soil modifiers (CWR-SRMs), where radical-polymerized gels are embedded on the surface of composite gel beads through spray coating. Characterization and performance analysis reveal that the three-dimensional spatial network structure rich in hydrophilic groups exhibits good thermal stability (first-stage weight loss temperature of 257.7 °C in thermogravimetric analysis) and encapsulation efficiency for fulvic acid‑potassium (FA-K), which can enhance soil quality in saline-alkali environments. The molecular chain relaxation under saline-alkali conditions promotes a synergistic effect of swelling and slow release, endowing it with qualifications as a water reservoir, Ca2+ source unit, and slow-release body. The results of a 6 weeks incubation experiment on 0-20 cm saline-alkaline soil with different application gradients showed that the gradient content had a significant effect on the soil improvement effect. Specifically, the T2 (the dosage accounted for 1 % of soil mass) treatment significantly increases water retention (30 % ~ 90 %), and nutrient levels (30 % ~ 50 %), while significantly decreasing soil sodium colloid content (30 % ~ 60 %) and soil pH (10 % ~ 15 %). Furthermore, PCA analysis indicates that the addition of 1 % CWR-SRMs as amendments can significantly adjust the negative aspects of soil salinity and alkalinity. This highlights the excellent applicability of CWR-SRMs in improving saline-alkali agricultural ecosystems, demonstrating the potential value of novel environmentally friendly gels as an alternative solution for soil challenges persistently affected by adverse salinity and alkalinity.
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Affiliation(s)
- Le Qi
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xiao Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China.
| | - Ting Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Zhong Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Wei Ren
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Qifeng Gao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; Institute for Total and Utilization of Resources, China Nonusferr Metals (Guilin) Geology and Mining Co., Ltd., Guilin 541004, China
| | - Mengting Liu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Pangzhi Wei
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Yongkang Lai
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Weipeng Yao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Huanhuan An
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Lan Zhang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Chuncheng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Shenglian Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resources Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Xubiao Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, China; Key Laboratory of Jiangxi Province for agricultural environmental pollution prevention and control in red soil hilly region, School of life sciences, Jinggangshan University, Ji'an 343009, China.
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An K, Feng X, Ji J, Wang X, Pang M, Liu T, Wang S, Shi H, Dong J, Liu Y. Synergistic mechanism and environmental behavior of tank-mix adjuvants to topramezone and atrazine. Environ Sci Pollut Res Int 2024; 31:20246-20257. [PMID: 38372921 DOI: 10.1007/s11356-024-32389-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 02/05/2024] [Indexed: 02/20/2024]
Abstract
An effective way to reduce herbicide quantity is to use adjuvants in order to optimize the amount of herbicide and improve its control efficiency. In order to screen for efficient herbicide tank-mix adjuvants, improve the control of weeds in maize fields, reduce the amount of effective ingredients, and improve the adsorption and digestion behavior of herbicides in soil, this study evaluated the synergistic effects and soil behavior of four types of tank-mix adjuvants combined with herbicides. Different types of adjuvants can enhance herbicide production. Surface tension was significantly reduced by 13% after the pesticide solution was applied with AgroSpred™ Prime. The contact angle with the foliar surface was significantly reduced and solution wettability improved using Atp Lus 245-LQ-(TH). The permeability of topramezone and atrazine in leaves of Amaranthus retroflexus L. and Digitaria sanguinalis (L.) Scop. was increased by 22-96% after adding either tank-mix adjuvant. The solution drying time and maximum retention on leaves were not affected by the tank-mix adjuvants. Ethyl and methylated vegetable oils can reduce the adsorption of topramezone in the soil, thus reducing its half-life in soil. The tank-mix adjuvants had no significant effect on soil dissipation or adsorption of atrazine. AgroSpred™ Prime and Atp Lus 245-LQ-(TH) have the best synergistic effect on topramezone and atrazine in the control of A. retroflexus L. and D. sanguinalis (L.) Scop. in maize fields.
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Affiliation(s)
- Kai An
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Xiaoxiao Feng
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Jiaxing Ji
- Hebei Research Institute of Microbiology Co., LTD, Baoding, 071052, People's Republic of China
| | - Xinyue Wang
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Minhao Pang
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Tiantian Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Sijia Wang
- Resource Utilization and Plant Protection, Chinese Academy of Agricultural Sciences, Liaoning 125100, Beijing, People's Republic of China
| | - Huiru Shi
- Resource Utilization and Plant Protection, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Jingao Dong
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China
| | - Yingchao Liu
- College of Plant Protection, Hebei Agricultural University, Baoding, 071000, People's Republic of China.
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Shi W, Han W, Liao Y, Wen J, Zhang G. Inhibition mechanism of fisetin on acetylcholinesterase and its synergistic effect with galantamine. Spectrochim Acta A Mol Biomol Spectrosc 2024; 305:123452. [PMID: 37769468 DOI: 10.1016/j.saa.2023.123452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 09/30/2023]
Abstract
The search for acetylcholinesterase (AChE) inhibitors produced by natural sources is of great significance for the prevention and therapy of Alzheimer's disease and has been widely concerned. In this study, fisetin, a flavonoid compound of plant origin, displayed a mixed inhibition mode on AChE (IC50 = 8.88 ± 0.14 μM). Fluorescence spectra analysis revealed that fisetin statically quenched AChE fluorescence, and the ground state complex was formed by hydrogen bonds and hydrophobic interactions. Circular dichroism assays showed that fisetin induced AChE structure loosened with a decrease in α-helix structure (from 20.6 % to 19.5 %). Computer simulation exhibited that fisetin bound to both the peripheral anionic site (PAS) and the catalytic active site (CAS) and increased the stability of the AChE. Interestingly, the combination of fisetin and galantamine enhanced the binding affinity between AChE and galantamine and induced AChE structure further loosened, while the inhibition mode was still the mixed type. The heatmap analysis indicated that galantamine (0.2 μM) combined with fisetin (2.25 μM) had a significant synergy on AChE inhibition, probably because fisetin binding at the PAS-AChE induced conformation changes of the gorge and CAS, which enhanced galantamine binding affinity with CAS, and a further loose structure of AChE was induced by the mixture, so finally the interaction between the substrate and AChE was strongly affected. This work may offer a theoretical reference for the functional research of fisetin as a potential AChE inhibitor and an enhanced supplement for galantamine.
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Affiliation(s)
- Wenli Shi
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Wenxin Han
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Yijing Liao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Jiaqi Wen
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China
| | - Guowen Zhang
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, China.
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Yin J, Geng Q, Xiao X, Wang S, Meng L, Deng N, Xu J, Su B, Chen J, Zhao W, Jin L, Zhao C. Mussel-inspired antibacterial sponge for highly efficient water purification and sterilization. J Hazard Mater 2024; 461:132598. [PMID: 37757561 DOI: 10.1016/j.jhazmat.2023.132598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/28/2023] [Accepted: 09/19/2023] [Indexed: 09/29/2023]
Abstract
With the current expansion of urban areas and industrial development, the increasing discharge of wastewater containing bacteria poses a threat to human health. Although substantial advancements have been made in antibacterial materials, there is still a need for an efficient method that can thoroughly remove bacteria through sterilization and adsorption during wastewater treatment. Here, we report a mussel-inspired antibacterial sponge with outstanding antibacterial efficiency exceeding 95% and a high removal ratio of the bacterial corpses for water purification after contacting for 30 min. The high-efficient antibacterial performance is attributed to the stable releasing property of Ag+ and the charge interaction with quaternary amine salts. Combining the key features, including high-efficient, synergistic mechanism, and corpse capture, the antibacterial sponge shows excellent disinfection effects. This study provides a new method for water purification without bacterial residue.
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Affiliation(s)
- Junyi Yin
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China; Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Qikun Geng
- West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Xiao Xiao
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Shaolei Wang
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Liyang Meng
- West China School of Medicine, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Ningyue Deng
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Jing Xu
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Baihai Su
- Department of Nephrology, West China Hospital, Sichuan University, Chengdu 610041, PR China
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Weifeng Zhao
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Lunqiang Jin
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China; Department of Nephrology, West China Hospital, Sichuan University, Chengdu 610041, PR China.
| | - Changsheng Zhao
- College of Polymer Science and Engineering, Sichuan University, Chengdu 610065, PR China.
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9
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Shan S, Wang S, Yan X, Chen K, Liang L, Li X, Zhou C, Yan X, Ruan R, Cheng P. Mixotrophic culture of Chaetoceros sp. and the synergistic carbon and energy metabolism. Bioresour Technol 2023; 390:129912. [PMID: 37879446 DOI: 10.1016/j.biortech.2023.129912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/20/2023] [Accepted: 10/21/2023] [Indexed: 10/27/2023]
Abstract
This research studied the metabolic mechanism of the mixotrophic Chaetoceros sp. The results showed this alga had the highest cell density and growth rate of 47.72 × 105 cells mL-1 and 0.41 d-1, respectively, with a maximum dry weight of 2.90 g/L, when compared to photoautotrophic and photoheterotrophic modes. Compared to photoheterotrophy, transcriptomics results showed the Rubisco, PGK, and GAPDH related genes were separately up-regulated by 1.03, 2.36, and 1.36 times in CBB cycle in mixotrophic mode, suggesting intermediate metabolites of EMP and PPP can enter the chloroplast via transporter proteins, or membrane permeation, and feedback inhibition regulates the reduction of multiple reactions in CBB cycle. Chaetoceros sp. achieves high biomass by utilizing ATP and carbon structures from EMP and PPP pathways, and the addition of NaHCO3 leads to an up-regulation of CBB cycle for the mixotrophic alga, resulting in higher biomass compared to the photoheterotrophic mode.
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Affiliation(s)
- Shengzhou Shan
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Shanshan Wang
- The First Affiliated Hospital of Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xi Yan
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Kang Chen
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China; Food Chemistry and Food Development, Department of Biochemistry, University of Turku, Turun yliopisto, Turku FI-20014, Finland
| | - Li Liang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, 214122, China
| | - Xiaohui Li
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Chengxu Zhou
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xiaojun Yan
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Roger Ruan
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA.
| | - Pengfei Cheng
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China; Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA.
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10
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Liu Z, Luo M, Yuan S, Meng L, Ding W, Su S, Cao Y, Wang Y, Li X. Boron-doped graphene quantum dot/bismuth molybdate composite photocatalysts for efficient photocatalytic nitrogen fixation reactions. J Colloid Interface Sci 2023; 650:1301-1311. [PMID: 37478747 DOI: 10.1016/j.jcis.2023.07.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/09/2023] [Accepted: 07/13/2023] [Indexed: 07/23/2023]
Abstract
Bismuth molybdate (BMO) is a promising visible-driven photocatalyst and constructing heterojunctions in BMO-based materials is an effective way to enhance photocatalytic performance. In this study, boron-doped graphene quantum dots (BGQDs) were synthesized by one-step pyrolysis and carbonization, followed by the preparation of bismuth molybdate/boron-doped graphene quantum dots (BGQDs/BMO) heterojunction photocatalysts using in-situ growth method. The introduction of BGQDs significantly improved the photocatalytic nitrogen fixation activity under the irradiation of visible light and without scavengers. The highest NH3 yield was achieved with BGQDs/BMO-10, which was 3.48 times higher than pure phase BMO. This improvement was due to the formation of Z-scheme heterojunctions between BGQDs and BMO with the synergistic mechanism of interfacial charge transport and the generation of more protons. This study provides useful guidance for enhancing the visible-light nitrogen fixation performance of BMO materials.
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Affiliation(s)
- Zhenyu Liu
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Min Luo
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China.
| | - Shengbo Yuan
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Linghu Meng
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Wenming Ding
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Senda Su
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Yue Cao
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Yingying Wang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China
| | - Xiaoman Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, School of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, Ningxia 750021, People's Republic of China.
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11
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Li G, Yang T, Xiao W, Yao X, Su M, Pan M, Wang X, Lyu T. Enhanced biofuel production by co-pyrolysis of distiller's grains and waste plastics: A quantitative appraisal of kinetic behaviors and product characteristics. Chemosphere 2023; 342:140137. [PMID: 37730021 DOI: 10.1016/j.chemosphere.2023.140137] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 08/22/2023] [Accepted: 09/08/2023] [Indexed: 09/22/2023]
Abstract
Pyrolysis of biomass feedstocks can produce valuable biofuel, however, the final products may present excessive corrosion and poor stability due to the lack of hydrogen content. Co-pyrolysis with hydrogen-rich substances such as waste plastics may compensate for these shortcomings. In this study, the co-pyrolysis of a common biomass, i.e. distiller's grains (DG), and waste polypropylene plastic (PP) were investigated towards increasing the quantity and quality of the production of biofuel. Results from the thermogravimetric analyses showed that the reaction interval of individual pyrolysis of DG and PP was 124-471 °C and 260-461 °C, respectively. Conversely, an interaction effect between DG and PP was observed during co-pyrolysis, resulting in a slower rate of weight loss, a longer temperature range for the pyrolysis reaction, and an increase in the temperature difference between the evolution of products. Likewise, the Coats-Redfern model showed that the activation energies of DG, PP and an equal mixture of both were 42.90, 130.27 and 47.74 kJ mol-1, respectively. It thus follows that co-pyrolysis of DG and PP can effectively reduce the activation energy of the reaction system and promote the degree of pyrolysis. Synergistic effects essentially promoted the free radical reaction of the PP during co-pyrolysis, thereby reducing the activation energy of the process. Moreover, due to this synergistic effect in the co-pyrolysis of DG and PP, the ratio of elements was effectively optimized, especially the content of oxygen-containing species was reduced, and the hydrocarbon content of products was increased. These results will not only advance our understanding of the characteristics of co-pyrolysis of DG and PP, but will also support further research toward improving an efficient co-pyrolysis reactor system and the pyrolysis process itself.
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Affiliation(s)
- Gang Li
- School of Artificial Intelligence, Beijing Technology and Business University, Haidian District, Beijing, 10048, China
| | - Tenglun Yang
- School of Artificial Intelligence, Beijing Technology and Business University, Haidian District, Beijing, 10048, China
| | - Wenbo Xiao
- School of Artificial Intelligence, Beijing Technology and Business University, Haidian District, Beijing, 10048, China
| | - Xiaolong Yao
- School of Ecology and Environment, Beijing Technology and Business University, Haidian District, Beijing, 10048, China
| | - Meng Su
- School of Economics, Beijing Technology and Business University, Fangshan District, Beijing, 10048, China
| | - Minmin Pan
- Department for Solar Materials, Helmholtz Centre for Environmental Research GmbH-UFZ, Permoserstraße 15, 04318, Leipzig, Germany
| | - Xiqing Wang
- College of Food Science Technology and Chemical Engineering, Hubei University of Arts and Science, Xiangyang, Hubei, 441053, China.
| | - Tao Lyu
- School of Water, Energy and Environment, Cranfield University, College Road, Cranfield, Bedfordshire, MK43 0AL, United Kingdom.
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12
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Shan S, Manyakhin AY, Wang C, Ge B, Han J, Zhang X, Zhou C, Yan X, Ruan R, Cheng P. Mixotrophy, a more promising culture mode: Multi-faceted elaboration of carbon and energy metabolism mechanisms to optimize microalgae culture. Bioresour Technol 2023; 386:129512. [PMID: 37481043 DOI: 10.1016/j.biortech.2023.129512] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 07/15/2023] [Accepted: 07/16/2023] [Indexed: 07/24/2023]
Abstract
Some mixotrophic microalgae appear to exceed the sum of photoautotrophy and heterotrophy in terms of biomass production. This paper mainly reviews the carbon and energy metabolism of microalgae to reveal the synergistic mechanisms of the mixotrophic mode from multiple aspects. It explains the shortcomings of photoautotrophic and heterotrophic growth, highlighting that the mixotrophic mode is not simply the sum of photoautotrophy and heterotrophy. Specifically, microalgae in mixotrophic mode can be divided into separate parts of photoautotrophic and heterotrophic cultures, and the synergistic parts of photoautotrophic culture enhance aerobic respiration and heterotrophic culture enhance the Calvin cycle. Additionally, this review argues that current deficiencies in mixotrophic culture can be improved by uncovering the synergistic mechanism of the mixotrophic mode, aiming to increase biomass growth and improve quality. This approach will enable the full utilization of advantagesin various fields, and provide research directions for future microalgal culture.
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Affiliation(s)
- Shengzhou Shan
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Artem Yurevich Manyakhin
- Far Eastern Branch, Russian Academy of Sciences, Federal Scientific Center of East Asian Terrestrial Biodiversity, 100-letiya Vladivostoka Prospect, 159, Vladivostok 690022, Russia
| | - Chun Wang
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Baosheng Ge
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266580, China
| | - Jichang Han
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xuezhi Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
| | - Chengxu Zhou
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Xiaojun Yan
- Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang 315211, China
| | - Roger Ruan
- Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA
| | - Pengfei Cheng
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo, Zhejiang 315211, China; Center for Biorefining, and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA.
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13
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Li C, Zhang J, Liu H, Yuan H, Cai J, Fogaça MV, Zhang YW. The synergistic mechanism of action of Dajianzhong decoction in conjunction with ketamine in the treatment of depression. Biomed Pharmacother 2023; 165:115137. [PMID: 37453197 DOI: 10.1016/j.biopha.2023.115137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
Depression is a multifactorial syndrome with a variety of underlying pathological mechanisms. While ketamine, an N-methyl-D-aspartate receptor (NMDAR) antagonist, exhibits a rapid antidepressant action in the central never system (CNS), the potential addiction and psychotomimetic adverse effects of ketamine limit its chronic use in clinical practice. Therefore, it is necessary to discover an additional agent that shows a synergistic antidepressant activity with ketamine to sustain its therapeutic action so as to reduce its use frequency in depression treatment. The present study indicated that Dajianzhong decoction (DJZT), an empirical herbal formula used for the clinical treatment of several inflammation-related intestinal disorders, sustains behavioral and synaptic action of ketamine in depressive mouse models. Additionally, ketamine was also demonstrated to exert a synergistic action with DJZT to alleviate the chronic unpredictable mild stress (CUMS)-induced abnormalities in gut barrier proteins and colonic histology, and subsequently to normalize the diversity and composition of gut microbiota. Furthermore, DJZT was shown to possess an anti-inflammatory activity to prevent activation of NF-κB from releasing proinflammatory cytokines, specifically through inhibiting Th17 cells/IL-17A pathway. Our results uncovered the mechanism of action of DJZT in conjunction with ketamine in depression treatment by which these agents target different pathological factors across biological systems and exert a synergistic activity through a bidirectional communication in the gut-brain axis, and also provided new insights into the systematic treatment of depression.
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Affiliation(s)
- Chan Li
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Jiping Zhang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Hanhe Liu
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Huijie Yuan
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou 510080, China
| | - Jianxin Cai
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China
| | - Manoela V Fogaça
- Department of Pharmacology and Physiology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Yuan-Wei Zhang
- School of Life Sciences, Guangzhou University, Guangzhou 510006, China.
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14
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Wang J, Chi Q, Pan L, Zhang R, Mu Y, Shen J. New insights into enhanced biodegradation of 4-bromphenol in a nitrate-reducing system: Process performance and mechanism. Water Res 2023; 242:120200. [PMID: 37336182 DOI: 10.1016/j.watres.2023.120200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
Due to the recalcitrant nature of halogenated phenol, conventional anaerobic bioprocess is often limited by low removal efficiency and poor process stability. At the presence of electron acceptors such as nitrate, 4-bromophenol (4-BP) removal efficiency is significantly higher than that in the anaerobic control system, but the mechanism involved is still unclear. Therefore, an up-flow nitrate-reducing bioreactor (NRBR) was designed and consecutively performed for 215 days to explore the synergistic mechanism for BPs biodegradation and nitrate reduction. Complete 4-BP biodegradation could be obtained in NRBR at HRT and 4-BP loading rate of 24 h and 0.29 mol m - 3d - 1, while the TOC removal and nitrate reduction efficiencies were as high as 91.33±2.11% and 98.31±1.33%, respectively. Population evolution analyses revealed that the microorganisms involved in 4-BP debromination and biodegradation (Candidatus Peregrinibacteria, Denitratisoma, Anaerolineaceae and Ignavibacterium) as well as nitrate reduction (Denitratisoma, Anaerolineaceae, Limnobacter and Ignavibacterium) were significantly enriched in NRBR. Major intermediates during 4-BP biodegradation, including 4-bromocatechol, 4‑bromo-6-oxo-hexanoic acid and succinic acid were identified, while a distinct 4-BP biodegradation pathway via hydration, aromatic-ring cleavage, hydrolysis debromination and oxidation was expounded. Metagenomic analysis indicated that oxidation (had, pht4, boh, butA), hydrolysis debromination ((S)-2-haloacid dehalogenase) and bio-mineralization (gabD, sdhA) of 4-BP were largely enhanced in NRBR. Moreover, carbon, nitrogen, energy and amino acid metabolisms were significantly facilitated with the injection of nitrate in order to provide energy and electron, thus enhanced microbial activities and enzymatic reactions in NRBR. The proposed mechanism provides new insights into our mechanistic understanding of halogenated phenol biodegradation and the development of sustainable bioremediation strategies.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Qiang Chi
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ling Pan
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Ranran Zhang
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yang Mu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Jinyou Shen
- Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Industry and Information Technology, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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15
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Wang Z, Hou K, Chen F, Zhang S, Pi Z, He L, Chen S, Li X, Yang Q. Efficient removal of organic contaminants in CuS-mediated solid-liquid-interfacial fenton-like system: Role of bimetallic cycle and sulfur species. J Hazard Mater 2023; 451:131103. [PMID: 36870132 DOI: 10.1016/j.jhazmat.2023.131103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 02/20/2023] [Accepted: 02/26/2023] [Indexed: 06/18/2023]
Abstract
The conventional Fenton-like system (Fe(III)/H2O2) is severely limited by the inferior activity of Fe(III) on H2O2 activation to produce highly active species and the sluggish regeneration rate of Fe(II). This work significantly enhanced the oxidative breakdown of the target organic contaminant bisphenol A (BPA) by Fe(III)/H2O2 by introducing cheap CuS at a low dose of 50 mg/L. The BPA removal (20 mg/L) in CuS/Fe(III)/H2O2 system reached 89.5 % within 30 min under the optimal conditions: CuS dosage 50 mg/L, Fe(III) concentration 0.05 mM, H2O2 concentration 0.5 mM and pH 5.6. Compared to CuS/H2O2 and Fe(III)/H2O2 systems, the reaction constants had a 47- and 12.3-fold enhancement, respectively. Even compared with the conventional Fe(II)/H2O2 system, the kinetic constant also increased more than twice, further confirming the distinctive superiority of constructed system. Element species change analyses showed that Fe(III) in solution was adsorbed onto the CuS surface, and then Fe(III) was rapidly reduced by Cu(I) in the CuS lattice. Combining CuS and Fe(III) (in-situ formed CuS-Fe(III) composite) created a robust co-effect on the activation of H2O2. Also, S(-II) and its derivatives, e.g., Sn2- and S0 (as an electron donor), could quickly reduce Cu(II) to Cu(I) and ultimately oxidize to the harmless product SO42-. Notably, a mere 50 μM of Fe(III) was sufficient to maintain enough regenerated Fe(II) to effectively activate H2O2 in CuS/Fe(III)/H2O2 system. In addition, such a system achieved a broad range of pH applications and was more suitable for real wastewater containing anions and natural organic matter. Scavenging tests, electron paramagnetic resonance (EPR), and probes further verified the critical role of •OH. This work provides a new approach to solving the problems of Fenton systems through a solid-liquid-interfacial system design and exhibits considerable application potential in wastewater decontamination.
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Affiliation(s)
- Zhu Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Kunjie Hou
- College of Environmental Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Fei Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400045, China.
| | - Shanshan Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Zhoujie Pi
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Li He
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Shengjie Chen
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Xiaoming Li
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China
| | - Qi Yang
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, Hunan 410082, China.
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16
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Tan M, Shi W, Wang H, Di G, Xie Z, Fan S, Tang J, Dong F. Effective photodegradation of antibiotics by guest-host synergy between photosensitizer and bismuth vanadate: Underlying mechanism and toxicity assessment. Chemosphere 2023; 325:138362. [PMID: 36905996 DOI: 10.1016/j.chemosphere.2023.138362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 02/15/2023] [Accepted: 03/08/2023] [Indexed: 06/18/2023]
Abstract
The removal of antibiotics in wastewater has attracted increasing attention. Herein, a superior photosensitized photocatalytic system was developed with acetophenone (ACP) as the guest photosensitizer, bismuth vanadate (BiVO4) as the host catalyst and poly dimethyl diallyl ammonium chloride (PDDA) as the bridging complex, and used for the removal of sulfamerazine (SMR), sulfadiazine (SDZ) and sulfamethazine (SMZ) in water under simulated visible light (λ > 420 nm). The obtained ACP-PDDA-BiVO4 nanoplates attained a removal efficiency of 88.9%-98.2% for SMR, SDZ and SMZ after 60 min reaction and achieved kinetic rate constant approximately 10, 4.7 and 13 times of BiVO4, PDDA-BiVO4 and ACP-BiVO4, respectively, for SMZ degradation. In the guest-host photocatalytic system, ACP photosensitizer was found to have a great superiority in enhancing the light absorption, promoting the surface charge separation-transfer and efficient generation of holes (h+) and superoxide radical (·O2-), greatly contributing to the photoactivity. The SMZ degradation pathways were proposed based on the identified degradation intermediates, involving three main pathways of rearrangement, desulfonation and oxidation. The toxicity of intermediates was evaluated and the results demonstrated that the overall toxicity was reduced compared with parent SMZ. This catalyst maintained 92% photocatalytic oxidation performance after five cyclic experiments and displayed a co-photodegradation ability to others antibiotics (e.g., roxithromycin, ciprofloxacin et al.) in effluent water. Therefore, this work provides a facile photosensitized strategy for developing guest-host photocatalysts, which enabling the simultaneous antibiotics removal and effectively reduce the ecological risks in wastewater.
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Affiliation(s)
- Meihong Tan
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Wanping Shi
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Haifeng Wang
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Guanglan Di
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Zhengxin Xie
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Shisuo Fan
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China
| | - Jun Tang
- School of Resource and Environment, Anhui Agricultural University, Hefei, 230036, China.
| | - Fengshou Dong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, PR China
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17
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Li L, Li J, Yan Y, Ma R, Zhang X, Wang J, Shen Y, Ullah H, Lu L. Removal of organophosphorus flame retardant by biochar-coated nZVI activating persulfate: Synergistic mechanism of adsorption and catalytic degradation. Environ Pollut 2023:121880. [PMID: 37236590 DOI: 10.1016/j.envpol.2023.121880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 04/21/2023] [Accepted: 05/23/2023] [Indexed: 05/28/2023]
Abstract
Triphenyl phosphate (TPhP) is a typical aromatic-based non-chlorinated organophosphorus flame retardant, which has been widely detected in a variety of environments and poses high environmental and human health risks. In this study, biochar coated nano-zero-valent iron (nZVI) was fabricated to activate persulfate (PS) to degrade TPhP from water. A range of biochars (BC400, BC500, BC600, BC700, and BC800) was prepared as potential support to coat nZVI by pyrolyzing corn stalk at 400, 500, 600, 700 and 800 °C. As outperformed other biochars in adsorption rate, adsorption capacity, and less reluctant to be influenced by environmental factors (pH, humic acid (HA), coexistence of anions), BC800 was to act as support to coat nZVI (labeled as BC800@nZVI). SEM, TEM, XRD and XPS characterization showed that nZVI was successfully supported on the BC800. Removal efficiency of 10 mg L-1 TPhP by BC800@nZVI/PS could reach to 96.9% with a high catalytic degradation kinetic rate of 0.0484 min-1 under optimal condition. The removal efficiency remained stable in a wide pH range (3-9) and moderate concentration of HA and coexistence of anions, demonstrated the promising of using BC800@nZVI/PS system to eliminate TPhP contamination. Results from the radical scavenging and electron paramagnetic resonance (EPR) experiments demonstrated radical pathway (i.e. SO4·- and HO·) and non-radical pathway via 1O2 both play important role in TPhP degradation. The TPhP degradation pathway was proposed based on the six degradation intermediates analyzed by LC-MS. This study illustrated the synergistic mechanism of adsorption and catalytic oxidation removal of TPhP by BC800@nZVI/PS system, and provided a cost-efficient approach for TPhP remediation.
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Affiliation(s)
- Liangzhong Li
- State Environmental Protection Key Laboratory of Environ Pollut Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China
| | - Jianjun Li
- Longnan Ecology and Environment Bureau, Longnan, 746000, China
| | - Yile Yan
- State Environmental Protection Key Laboratory of Environ Pollut Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China
| | - Ruixue Ma
- State Environmental Protection Key Laboratory of Environ Pollut Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China
| | - Xiaohui Zhang
- State Environmental Protection Key Laboratory of Environ Pollut Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China
| | - Jun Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Yi Shen
- Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Habib Ullah
- Department of Environmental Science, Zhejiang University, Hangzhou, 310058, China
| | - Lun Lu
- State Environmental Protection Key Laboratory of Environ Pollut Health Risk Assessment, South China Institute of Environmental Sciences, Ministry of Ecology and Environment, Guangzhou, 510655, China.
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18
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Liu T, Bai M, Liu M, Li T, Liao Y, Zhao C, Yao M, Wang J, Wen A, Ding Y. Novel synergistic mechanism of 11-keto-β-boswellic acid and Z-Guggulsterone on ischemic stroke revealed by single-cell transcriptomics. Pharmacol Res 2023:106803. [PMID: 37230158 DOI: 10.1016/j.phrs.2023.106803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/11/2023] [Accepted: 05/22/2023] [Indexed: 05/27/2023]
Abstract
Although strides have been made, the challenge of preventing and treating ischemic stroke continues to persist globally. For thousands of years, the natural substances Frankincense and Myrrh have been employed in Chinese and Indian medicine to address cerebrovascular diseases, with the key components of 11-keto-β-boswellic acid (KBA) and Z-Guggulsterone (Z-GS) being the active agents. In this study, the synergistic effect and underlying mechanism of KBA and Z-GS on ischemic stroke were examined using single-cell transcriptomics. Fourteen cell types were identified in KBA-Z-GS-treated ischemic penumbra, and microglia and astrocytes account for the largest proportion. They were further re-clustered into six and seven subtypes, respectively. GSVA analysis reflected the distinct roles of each subtype. Pseudo-time trajectory indicated that Slc1a2 and Timp1 were core fate transition genes regulated by KBA-Z-GS. In addition, KBA-Z-GS synergistically regulated inflammatory reactions in microglia and cellular metabolism and ferroptosis in astrocytes. Most notably, we established an innovative drug-gene synergistic regulation pattern, and genes regulated by KBA-Z-GS were divided into four categories based on this pattern. Finally, Spp1 was demonstrated as the hub target of KBA-Z-GS. Taken together, this study reveals the synergistic mechanism of KBA and Z-GS on cerebral ischemia, and Spp1 may be the synergistic target for that. Precise drug development targeting Spp1 may offer a potential therapeutic approach for treating ischemic stroke.
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Affiliation(s)
- Tianlong Liu
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China; Department of Pharmacy, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, 730050, China
| | - Min Bai
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Minna Liu
- Department of Nephrology, The 940th Hospital Joint Logistics Support Forces of PLA, Lanzhou, 730050, China
| | - Tian Li
- School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Yucheng Liao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Chao Zhao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Minna Yao
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Jingwen Wang
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Aidong Wen
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
| | - Yi Ding
- Department of Pharmacy, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
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19
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Liang B, Zhang X, Wang F, Miao C, Ji Y, Huang Z, Gu P, Liu X, Fan X, Li Q. Production of polyhydroxyalkanoate by mixed cultivation of Brevundimonas diminuta R79 and Pseudomonas balearica R90. Int J Biol Macromol 2023; 234:123667. [PMID: 36796552 DOI: 10.1016/j.ijbiomac.2023.123667] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 01/31/2023] [Accepted: 02/09/2023] [Indexed: 02/17/2023]
Abstract
The microflora in the activated sludge of propylene oxide saponification wastewater is characterized by a clear succession after enrichment and domestication, and the specifically enriched strains can significantly increase the yield of polyhydroxyalkanoate. In this study, Pseudomonas balearica R90 and Brevundimonas diminuta R79, which are dominant strain after domestication, were selected as models to examine the interactive mechanisms associated with the synthesis of polyhydroxyalkanoate by co-cultured strains. RNA-Seq analysis revealed the up-regulated expression of the acs and phaA genes of strains R79 and R90 in the co-culture group, which enhanced their utilization of acetic acid and synthesis of poly-β-hydroxybutyrate. Cell dry weight and the yield of poly-β-hydroxybutyrate in the co-culture group were accordingly considerably higher than those in the respective pure culture groups. In addition, two-component system, quorum-sensing, flagellar synthesis-related, and chemotaxis-related genes were enriched in strain R90, thereby indicating that compared with the R79 strain, R90 can adapt more rapidly to a domesticated environment. Expression of the acs gene was higher in R79 than in R90, and consequently, strain R79 could more efficiently assimilate acetate in the domesticated environment, and thus predominated in the culture population at the end of the fermentation period.
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Affiliation(s)
- Boya Liang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Xiujun Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Fang Wang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Changfeng Miao
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Yan Ji
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Zhaosong Huang
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Pengfei Gu
- School of Biological Science and Technology, University of Jinan, Jinan, China
| | - Xiaoli Liu
- Key Laboratory of Marine Biotechnology in Universities of Shandong, School of Life Sciences, Ludong University, Yantai, China
| | - Xiangyu Fan
- School of Biological Science and Technology, University of Jinan, Jinan, China.
| | - Qiang Li
- School of Biological Science and Technology, University of Jinan, Jinan, China.
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20
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Ma N, Ru Y, Weng M, Chen L, Chen W, Dai Q. Synergistic mechanism of supported Mn-Ce oxide in catalytic ozonation of nitrofurazone wastewater. Chemosphere 2022; 308:136192. [PMID: 36041529 DOI: 10.1016/j.chemosphere.2022.136192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/19/2022] [Accepted: 08/22/2022] [Indexed: 06/15/2023]
Abstract
In this study, the catalytic materials of MnOx/γ-Al2O3, CeO2/γ-Al2O3, and MnxCe1-xO2/γ-Al2O3 for catalytic ozonation were synthesized. The catalysts were used in heterogeneous catalytic ozonation of the wastewater containing ntrofurazone (NFZ). The effects of the catalytic ozonation operational factors were systematically evaluated in terms of ozone dosing, catalyst dosing, initial NFZ concentration, and pH. The results showed that the catalytic activity of the MnxCe1-xO2/γ-Al2O3 was higher than that of the MnOx/γ-Al2O3 and CeO2/γ-Al2O3. The kinetics analysis revealed that bimetallic loading has a synergistic effect and the mechanism of this effect was investigated in the catalytic ozonation system. The catalysts were characterized by FESEM, EDS, XRD, XPS, IR, and BET. The characteristics of the catalysts revealed that Mn could alter the oxide species on the metal surface and interfere with the formation of CeO2 crystals, which led to smaller grains, enhanced adsorption oxygen, and greater specific surface area. The MnxCe1-xO2/γ-Al2O3 crystals could form a solid solution, which helps higher catalytic activity. This study adds to the understanding of the synergistic mechanism of the loaded Ce-Mn oxide catalysts in the heterogeneous catalytic ozonation system and provides a feasible method for degrading pharmaceutical wastewater.
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Affiliation(s)
- Nengwei Ma
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Yifan Ru
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Mili Weng
- College of Environmental and Resources Sciences, Zhejiang A&F University, Hangzhou, 311300, China.
| | - Lu Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Wenqing Chen
- College of Architecture and Environment, Sichuan University, Chengdu, 610065, China
| | - Qizhou Dai
- College of Environment, Zhejiang University of Technology, Hangzhou, 310032, China.
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21
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Yu J, Li X, Wu M, Lin K, Xu L, Zeng T, Shi H, Zhang M. Synergistic role of inherent calcium and iron minerals in paper mill sludge biochar for phosphate adsorption. Sci Total Environ 2022; 834:155193. [PMID: 35421460 DOI: 10.1016/j.scitotenv.2022.155193] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 04/05/2022] [Accepted: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Phosphate adsorption using metal-based biochar has awakened much attention and triggered extensive research. In this study, novel Ca/Fe-rich biochars were prepared via a one-step process of pyrolyzing paper mill sludge (PMS) at various temperatures (300, 500, 700, and 800 °C) under a CO2 atmosphere for phosphate removal. Batch adsorption experiments showed that the biochar obtained at 800 °C (PB-800), which could be easily separated magnetically, exhibited the best phosphate adsorption capacity in a wide range of solution pH (5-11). Based on the Langmuir model, the maximum phosphate adsorption capacity for PB-800 was 17.33 mg/g. Besides, the effects of ambient temperature as well as coexisting ions on phosphate removal were also investigated. Kinetic and thermodynamic analysis revealed that chemisorption dominated the adsorption process. The calcium carbonate and ferric salts in the sludge were converted into CaO and Fe3O4 through pyrolysis at 800 °C. The CaO inherent in PB-800 was proved to serve as active sites for the chemical precipitation, showing its synergistic effect with iron oxide compounds (i.e., Fe3O4, α-Fe2O3) on phosphate removal through chemical precipitation, ligand exchange, and complexation. This study not only provides a feasible waste-to-wealth strategy for converting PMS into a Ca/Fe-rich magnetic biochar that can be used as an effective phosphate adsorbent, but also offers new insights into the synergistic effect of calcium and iron species for the adsorption of phosphate using biochar.
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Affiliation(s)
- Jie Yu
- Department of Environment Engineering, China Jiliang University, Hangzhou 310018, PR China
| | - Xiaodian Li
- Department of Environment Engineering, China Jiliang University, Hangzhou 310018, PR China
| | - Ming Wu
- Shaoxing Solid Waste Management Center, Shaoxing 312000, PR China
| | - Kun Lin
- Department of Environment Engineering, China Jiliang University, Hangzhou 310018, PR China
| | - Liheng Xu
- Department of Environment Engineering, China Jiliang University, Hangzhou 310018, PR China
| | - Tao Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Huixiang Shi
- College of Environment & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Ming Zhang
- Department of Environment Engineering, China Jiliang University, Hangzhou 310018, PR China.
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22
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Wang A, Guo S, Zheng Z, Wang H, Song X, Zhu H, Zeng Y, Lam J, Qiu R, Yan K. Highly dispersed Ag and g-C3N4 quantum dots co-decorated 3D hierarchical Fe3O4 hollow microspheres for solar-light-driven pharmaceutical pollutants degradation in natural water matrix. J Hazard Mater 2022; 434:128905. [PMID: 35452983 DOI: 10.1016/j.jhazmat.2022.128905] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 03/17/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
The efficient removal of pharmaceutical pollutants presents a great challenge for the conventional sewage treatment system. Herein, we document the nanosheets assembled 3D hierarchical Fe3O4 hollow microspheres co-modified by Ag and g-C3N4 quantum dots (Ag/CNQDs@Fe3O4) for efficient degradation of two classic anticancer drugs, i.e., capecitabine (CAP) and 5-fluorouracil (5-FLU) under visible light in 1 h. Benefiting from the unique hierarchically hollow structure, the intrinsic strengths of each component and their interactions, synergistic reinforcing mechanism is constructed, furnishing more accessible reactive places, promoting the diffusion of pollutants/oxidants, improving charge separation ability, and raising light utilization rate. Consequently, Ag/CNQDs@Fe3O4 can not only show superior photocatalytic properties, but also greatly boost PMS activation to yield sufficient oxidative radicals. More notably, the studied system also features excellent stability and strong tolerance to real water samples, and maintains appreciable performance even under natural sunlight illumination. The predominant active species, possible ADs decomposition pathways, and underlying reaction mechanism for the Ag/CNQDs@Fe3O4/PMS/vis system are thoroughly explored. This work presents significant advancement in enabling an integrated technology of PMS and photocatalysis to realize its great potential in environment restoration.
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Affiliation(s)
- Anqi Wang
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
| | - Shuya Guo
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China; College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China
| | - Zhikeng Zheng
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Hui Wang
- Institute of Chemistry, Humboldt University of Berlin, Berlin 12489, Germany
| | - Xiaolong Song
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Haida Zhu
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yiqiu Zeng
- Research Center for Eco-environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Jason Lam
- School of Energy and Environment and State Key Laboratory of Marine Pollution, City University of Hong Kong, 999077, Hong Kong Special Administrative Region of China
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Kai Yan
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China.
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23
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Wu L, Liu J, Xu P, Zhou J, Yang F. Biomass hydrogen donor assisted microwave pyrolysis of low-rank pulverized coal: Optimization, product upgrade and synergistic mechanism. Waste Manag 2022; 143:177-185. [PMID: 35272200 DOI: 10.1016/j.wasman.2022.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/05/2022] [Accepted: 02/18/2022] [Indexed: 06/14/2023]
Abstract
Wheat straw (WS) has been used as a hydrogen donor to provide sufficient hydrogen for hydrogenated microwave pyrolysis of low-rank pulverized coal (PC). In this work, the effects of pyrolysis time, microwave power, the particle size of PC, and the ratio of PC to WS on microwave co-pyrolysis of PC and WS were investigated to optimize the experimental conditions. The pyrolysis products generated under the optimal conditions for the maximum tar yield were contrastively discussed, and the relevant synergistic mechanism was proposed. Results showed the temperature-rising rate of other conditions was positively correlated with the tar yield but not for the condition of the ratio of PC to WS. The tar yield reached the maximum value of 17.20% during microwave co-pyrolysis under the conditions of 0.68-1.00 mm of particle size of PC, 700 W of microwave power, 50% of WS, and 20 min of pyrolysis time. The microwave pyrolysis of PC was significantly improved when adding WS, resulting in increased yields of tar and pyrolysis gas by 13.21% and 12.40%, respectively, compared with PC alone. The aliphatic and aromatic hydrocarbons in the coal tar sharply decreased, but the phenols, alcohols, and others increased compared with those in the microwave pyrolysis of PC. There was a positive synergistic effect between PC and WS in microwave co-pyrolysis caused by volatiles and biochar generated from WS.
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Affiliation(s)
- Lei Wu
- School of Chemistry and Chemical Engineering, Xi an University of Architecture and Technology, Xi'an 710055, China
| | - Jiao Liu
- School of Chemistry and Chemical Engineering, Xi an University of Architecture and Technology, Xi'an 710055, China
| | - Pan Xu
- School of Chemistry and Chemical Engineering, Xi an University of Architecture and Technology, Xi'an 710055, China
| | - Jun Zhou
- School of Chemistry and Chemical Engineering, Xi an University of Architecture and Technology, Xi'an 710055, China.
| | - Fu Yang
- Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Natural Resources, Xi'an 710021, China
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24
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Gong K, Lin Y, Wu P, Jin X, Owens G, Chen Z. Removal mechanism of 17β-estradiol by carbonized green synthesis of Fe/Ni nanoparticles. Chemosphere 2022; 291:132777. [PMID: 34742756 DOI: 10.1016/j.chemosphere.2021.132777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/30/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
Even a small concentration of estrogen released into the environment can cause great damage to the surrounding ecosystem, with potential teratogenic and carcinogenic hazards to many organisms. In this study, carbonized green synthesized Fe/Ni NPs, with a maximum adsorption capacity of 44.32 mg g-1 coupled with over 98.3% removal efficiency, were used to remove 17β-estradiol (E2) from water. Adsorption best conformed to pseudo-second-order kinetics (R2 = 0.998-0.999) and the Freundlich model (R2 = 0.990-0.997). SEM images reveal that the carbonized material had increased specific surface area and pores. Zeta Potential, FTIR and XPS spectra confirmed that carbonized material was negatively charged and contained functional groups with a high affinity for E2. Liquid chromatography during removal of E2 suggested no new substances were generated. Therefore, the synergistic effect of carbonized-Fe/Ni NPs surface functional groups is a key issue, including dehydration bonds, hydrogen bonds, and the accumulation of Π and Π. In practice the application of carbonized-Fe/Ni NPs demonstrated their ability to remove 51.8% and 48.7% of E2 from domestic sewage and livestock wastewater, respectively. This work provides a strong basis for the practical removal of E2 using carbonized-Fe/Ni NPs material.
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Affiliation(s)
- Kaisheng Gong
- Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China
| | - Yuanqiong Lin
- Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China
| | - Pan Wu
- Environmental Contaminants Group, Future Industries Institute, University of South Australian, Mawson Lakes, SA, 5095, Australia
| | - Xiaoying Jin
- Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China.
| | - Gary Owens
- Environmental Contaminants Group, Future Industries Institute, University of South Australian, Mawson Lakes, SA, 5095, Australia
| | - Zuliang Chen
- Fujian Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Fujian Normal University, Fuzhou, 350007, Fujian Province, China.
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25
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Yang S, Huang Q, Feng Y, Ren X, Wang J, Yu Y. The anode is more beneficial to the advanced treatment of wastewater containing antibiotics by three-dimensional electro-biofilm reactor: Degradation, mechanism and optimization. Bioresour Technol 2022; 345:126473. [PMID: 34902482 DOI: 10.1016/j.biortech.2021.126473] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/22/2021] [Accepted: 11/27/2021] [Indexed: 06/14/2023]
Abstract
The three-dimensional electrode biological aerated filter (3DE-BAF) has the potential to overcome inherent limitations of conventional electrochemical and biofilm methods. Electrochemical means could enhance the performance and sustainability of biofilm technologies and stimulate the spread of new applications in (waste) water treatment. This paper describes the construction and performance of 3DE-BAF in the treatment of simulated wastewater represented by tetracycline (TC). This is followed by a discussion of electrode performance, the electron transport mechanism and the electrode's effect on the biological community of 3D-EBAF. Given the gap between experimental studies and practical applications, the enlarged anode 3DE-BAF named 3DEAE-BAF reactor was applied with good results to duck farm wastewater. This study could provide guidance as to developing new methods to construct a highly stable 3DE-BAF. The paper concludes that improved 3DE-BAF technology is promising for advanced treatment of livestock wastewater containing antibiotics.
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Affiliation(s)
- Shumin Yang
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Qingling Huang
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China
| | - Yan Feng
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China.
| | - Xuefeng Ren
- Dongying Heating Management Office, Dongying 2570002, China
| | - Jiaoping Wang
- Jinan Urban Construction Group Co., Ltd, Jinan 250022, China
| | - Yanzhen Yu
- School of Civil Engineering and Architecture, University of Jinan, Jinan 250022, China; School of Civil Engineering and Architecture, Qilu Institute of Technology, Jinan 250022, China
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26
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Wang C, Du J, Deng X, Chen R, Zhao Z, Shi W, Cui F. High-efficiency oxidation of norfloxacin by Fe 3+/H 2O 2 process enhanced via vacuum ultraviolet irradiation: Role of newly formed Fe 2. Chemosphere 2022; 286:131964. [PMID: 34426296 DOI: 10.1016/j.chemosphere.2021.131964] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 08/05/2021] [Accepted: 08/19/2021] [Indexed: 06/13/2023]
Abstract
Fluoroquinolones in water environments have caused worldwide concern due to negative effects on human health and ecological environment. Heretofore, synergistic mechanisms of Fe3+/H2O2 process enhanced via vacuum ultraviolet (VUV) irradiation for fluoroquinolones removal, and generation ways and contribution evaluations of reactive oxygen species (ROS) in integrated VUV/Fe3+/H2O2 were not reported systematically. This work comparatively investigated norfloxacin (NOR, typical fluoroquinolones) degradation in VUV/Fe3+/H2O2 and its sub-processes. Compared with its sub-processes, VUV/Fe3+/H2O2 process could not only increase degradation rate constant by 2.1-10.2 times and increase mineralization rate by 14.5%-49.5%, but also reduce energy consumption by 53.1%-89.9% and reduce economic cost by 33.3%-68.0%. Effect mechanisms of Fe3+ and H2O2 doses on decontamination capability of VUV/Fe2+/H2O2 were elaborated, and 3 mM H2O2 and 90 μM Fe3+ were determined as optimal doses. The synergetic factor in integrated VUV/Fe3+/H2O2 was 3.33, which was mainly ascribed to VUV photons accelerating iron cycle. In VUV/Fe3+/H2O2 process, superoxide radical and hydroxyl radical were confirmed as primary ROS, contributing 20.86% and 76.32% to NOR oxidation, separately. Organic and inorganic products of NOR and its degradation pathways in integrated VUV/Fe3+/H2O2 were also investigated. Besides, the synergistic reaction pathways in VUV/Fe3+/H2O2 were elaborated. Effects of water matrices on decontamination capability of VUV/Fe3+/H2O2 were also studied. All results indicated VUV/Fe3+/H2O2 as an efficient and cost-effective process suitable for NOR removal.
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Affiliation(s)
- Chuang Wang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China
| | - Jinying Du
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Xiaoyong Deng
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Rui Chen
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Zhiwei Zhao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China.
| | - Wenxin Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China
| | - Fuyi Cui
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing, 400045, PR China; State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing, 400044, PR China.
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27
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Shan A, Idrees A, Zaman WQ, Abbas Z, Farooq U, Ali M, Yang R, Zeng G, Danish M, Gu X, Lyu S. Enhancement in reactivity via sulfidation of FeNi@BC for efficient removal of trichloroethylene: Insight mechanism and the role of reactive oxygen species. Sci Total Environ 2021; 794:148674. [PMID: 34214820 DOI: 10.1016/j.scitotenv.2021.148674] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/21/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
A novel catalyst of sulfidated iron-nickel supported on biochar (S-FeNi@BC) was synthesized to activate persulfate (PS) for the removal of trichloroethylene (TCE). A number of techniques including XRD, SEM, TEM, FTIR, BET and EDS were employed to characterize S-FeNi@BC. The influence of sulfur to iron ratio (S/F) on TCE removal was investigated by batch experiments and a higher TCE removal (98.4%) was achieved at 0.22/1 ratio of S/F in the PS/S-FeNi@BC oxidation system. A dominant role in iron species conversion was noticed by the addition of sulfur in FeNi@BC system. Significant enhancement in recycling of the dissolved and surface Fe(II) was confirmed which contributed to the generation of free and surface-bound active radical species (OH, O2-, 1O2, SO4-). Further, the presence and contribution of these radicals were validated by the electron paramagnetic resonance (EPR) and quenching study. In addition, XPS results demonstrated the dominant role of S(-II) with the increase of Fe(II) from 36.3% to 58.6% and decrease of Fe(III) from 52.1% to 39.8% in the PS/S-FeNi@BC system. In crux, the influence of initial pH, catalyst dosage, oxidant dosage, and inorganic ions (HCO3-, Cl-, NO3- and SO42-) on TCE removal was also investigated. The findings obtained from this study suggest that S-FeNi@BC is an appropriate catalyst to activate PS for TCE contaminated groundwater remediation.
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Affiliation(s)
- Ali Shan
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China; Department of Environmental Sciences, The University of Lahore, Lahore 46000, Pakistan
| | - Ayesha Idrees
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Waqas Qamar Zaman
- Institute of Environmental Sciences and Engineering, School of Civil and Environmental Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
| | - Zain Abbas
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Usman Farooq
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475000, China
| | - Meesam Ali
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China; Department of Chemical Engineering, Muhammad Nawaz Sharif University of Engineering and Technology, Multan 60000, Pakistan
| | - Rumin Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Guilu Zeng
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
| | - Muhammad Danish
- Chemical Engineering Department, University of Engineering and Technology (UET), Lahore (Faisalabad Campus), G.T. Road, Lahore, Pakistan
| | - Xiaogang Gu
- Shanghai Urban Construction Design & Research Institute (Group) Co., Ltd, 3447 Dongfang Road, Shanghai 200125, China
| | - Shuguang Lyu
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China.
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Zhan N, Liu XH, Tang FY, Zhang JY. [Identification of potential targets and synergistic mechanism of Kushen Decoction for the treatment of cryptosporidiosis]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:483-495. [PMID: 34791846 DOI: 10.16250/j.32.1374.2021169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To explore the potential targets and synergistic mechanisms of Kushen Decoction for the treatment of cryptosporidiosis using network pharmacology and molecular docking methods. METHODS The main active ingredients of Kushen Decoction were captured from the Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform (TC-MSP) and the Universal Protein Resource (UniProt) database, and the potential targets were predicted. In addition, the active ingredients of Kushen Decoction that were not included in the TCMSP database were retrieved in CNKI, WanFang Data, CBM, PubMed and Web of Science databases, and the target genes of all supplemented active ingredients were predicted using the online TargetNet database. Network construction and analysis were performed using the Cytoscape software, and cryptosporidiosis-related targets were retrieved in the Comparative Toxicogenomics Database and GeneCards database. The protein-protein interaction (PPI) network was created using the STRING database, and the DAVID database was used for GO enrichment and KEGG pathway analyses. The tissue distribution of key targets was investigated using the BioGPS database, and the AutoDockTools software was employed to verify the molecular docking results. RESULTS A total of 38 active ingredients of Kushen Decoction were screened, and the core ingredients included quercetin, (+)-14α-hydroxymatrine and apigenin. A total of 831 targets of Kushen Decoction and 512 cryptosporidiosis-related targets were predicted, and PPI network analysis revealed 69 key targets, including AKT1, TNF and IL-6. There were 303 biological processes, 46 molecular functions and 29 cellular components involved in the treatment of cryptosporidiosis with Kushen Decoction, and 13 KEGG pathways played a therapeutic role in the synergistic mechanisms of multiple targets, such as Toll-like receptor (TLR), nuclear factor kappa B(NF)-κB, nucleotide binding oligomerization domain like receptor (NLR) signal pathways. The core targets were mainly distributed in the hematologic and immune systems. Molecular docking analysis showed that the binding energy between active ingredients and key targets were all less than 0 kJ/mol, indicating the strong binding of ligands to receptors. CONCLUSIONS The active ingredients of Kushen Decoction, such as quercetin, (+)-14α-hydroxymatrine and apigenin, may act on targets like AKT1, TNF, IL-6 to modulate TLR, NLR and NF-κB signaling pathways to play a synergistic role in the treatment of cryptosporidiosis in the hematologic and immune system.
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Affiliation(s)
- N Zhan
- Zunyi Medical University, Zunyi 563000, China
| | - X H Liu
- Zunyi Medical University, Zunyi 563000, China
| | - F Y Tang
- Zunyi Medical University, Zunyi 563000, China
| | - J Y Zhang
- School of Pharmacy, Zunyi Medical University, China
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Li Y, Gong Y, Zhang X, Wang J, Cheng Y, Liu F, Shi X, Xu W, Dong L. Exploring the synergistic mechanism of Gegen Qinlian Decoction on the Wnt signaling pathway using an integrated strategy of network pharmacology and RNA-seq. J Ethnopharmacol 2021; 278:114283. [PMID: 34098017 DOI: 10.1016/j.jep.2021.114283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/27/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Gegen Qinlian Decoction (GQD) (including: Puerariae lobatae (Willd.) Ohwi, radix; (short for Gengen) Glycyrrhiza uralensis Fisch., root and rhizome (short for Gancao), honeyed; Coptis chinensis Franch., rhizome (short for Huanglian); Scutellaria baicalensis Georgi, radix, boiled (short for S. baicalensis) has been widely used to treat inflammatory bowel disease (IBD) and colorectal cancer (CRC). To explore compatibility mechanism of GQD could be of advantage to investigate the complex principle of TCM, which might be conducive to the exploration of the modernization of TCM. AIM OF REVIEW In this study, a strategy based on system pharmacology was constructed to uncover the multi-target regulation and compatibility mechanism of GQD on the Wnt signaling pathways. MATERIAL AND METHODS The pharmacological network of GQD was constructed by TCMSP, DAVID, Uniprote database. The cell growth inhibitory effects of puerarin (PUE), wogonin (WOG), berberine (BER), and glycyrrhetinic acid (GLY) on SW480 cells were assessed using CCK-8 assay. The multi-target regulation and compatibility mechanism of combination PUE with GLY were examined by RNA-seq, HPLC-QQQ/MS, qRT- PCR and Western blot analysis. RESULTS Network pharmacology analysis indicated that PUE, WOG, BER and GLY were the active components in GQD and had a synergistic effect on the targets of the Wnt signaling pathway. Additionally, pharmacological experiments revealed that WOG, BER, and GLY inhibited activity of colorectal cancer (CRC) cell lines SW480 cells, and that PUE only exhibited effective antitumour activity when combined with GLY. CTNNB1, CCND1 and SMAD4 were identified as synergistic targets inhibited by PUE-GLY. Moreover, PUE-GLY could influence the Wnt signaling pathway by upregulating GSK3B and downregulating CTNNB1 synergistically. It also showed that GLY could effectively increase the intracellular content of PUE based on HPLC-QQQ/MS analysis, and this process was achieved by influencing the targets of the membrane's pathway, such as cell adhesion molecules, focal adhesion, and tight junctions. CONCLUSION GLY was revealed a multi-target mechanism, which could downregulate CTNNB1 as the active component and intervene in membrane proteins (CDH1, CADM1, ITGB2, ICAM1, ITGA1) as 'guide' in the formulae. Moreover, the mechanism of synergistic antitumour action of PUE (the active component of Monarch drug) and GLY (the active component of Guide drug) on the Wnt signaling pathway was explored systematically. It was a promising breakthrough for elucidating the scientific connotation of the compatibility of TCM formulae and provide a valuable and practicable methodology for clarifying the mechanisms of TCM.
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Affiliation(s)
- Yanping Li
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Yiting Gong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Xin Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Jiaxin Wang
- School of Life Sciences, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Yaru Cheng
- School of Life Sciences, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Fen Liu
- School of Life Sciences, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Xiujia Shi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China
| | - Wenjuan Xu
- School of Life Sciences, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China.
| | - Ling Dong
- School of Life Sciences, Beijing University of Chinese Medicine, No. 11, Bei San Huan Dong Lu, Chaoyang District, Beijing, 100029, China.
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Jia L, Yu Y, Li ZP, Qin SN, Guo JR, Zhang YQ, Wang JC, Zhang JC, Fan BG, Jin Y. Study on the Hg 0 removal characteristics and synergistic mechanism of iron-based modified biochar doped with multiple metals. Bioresour Technol 2021; 332:125086. [PMID: 33838451 DOI: 10.1016/j.biortech.2021.125086] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 06/12/2023]
Abstract
An iron-based composite adsorbent with biochar as the support was prepared by coprecipitation and the sol-gel method. Both single-iron-based modified biochar without doping with other metals and iron-based modified biochar doped with multiple metals (Ce, Cu, Co, Mn) were synthesised. The adsorption kinetics were analysed, and temperature-programmed desorption measurements were performed to reveal the inherent difference in mechanism between the oxidation and adsorption of Hg0 by the modified biochar and to elucidate the key mechanism of Hg0 removal. The results show that the removal of Hg0 by the modified biochar mainly includes adsorption and oxidation processes. The adsorption process is divided into two stages, external and internal mass transfer, both of which occur via multilayer adsorption. HgO and Hg-OM are the main forms of Hg0 present on the modified biochar surface. Doped metal oxides can play a synergistic role in enhancing the mercury removal performance of the modified biochar.
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Affiliation(s)
- Li Jia
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Yue Yu
- College of Economics and Management, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Ze-Peng Li
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Shu-Ning Qin
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jin-Rong Guo
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Yong-Qiang Zhang
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Jian-Cheng Wang
- Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, PR China
| | | | - Bao-Guo Fan
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Yan Jin
- College of Electrical and Power Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China.
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Yang R, Cai J, Yang H. Enhanced reactivity of zero-valent aluminum/O 2 by using Fe-bearing clays in 4-chlorophenol oxidation. Sci Total Environ 2021; 773:145661. [PMID: 33940749 DOI: 10.1016/j.scitotenv.2021.145661] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 01/08/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Zero-valent aluminum (ZVAl) is a promising reductant because of its relatively low redox potential, which can efficiently activate molecular oxygen to generate reactive oxygen species. However, its long-term performance is limited by the intrinsic dense oxide layer and the passivation effect of the accumulative Al-(hydr)oxide on its surface during the reaction. In this study, four clay minerals with different compositions were mixed with ZVAl by ball milling to obtain four composites of ZVAl and clay (ZVAl-Clay), which were used to degrade a high concentration of 4-chlorophenol (4-CP) under ambient conditions. The oxidation efficiencies of different ZVAl-Clays were strongly relevant to Fe contained in the clay minerals. The Fe-free ZVAl-Clay presented poor oxidation performance, whereas the reaction efficiencies of those ZVAl composites with Fe-bearing clays exhibited varying degrees of improvement. In comparison with the original ZVAl, the highest oxidation rate increased by 23 times, the maximum increased OH production was approximately 8 times, and the corresponding mineralization efficiency improved by 38.7%. However, the levels of improved oxidation performance of various ZVAl-Clays were not positively correlated with their actual total Fe contents, and their degradation efficiencies might also be affected by other physical and/or chemical properties of different clays. The synergistic mechanism revealed by various characterizations was that electron transfer might occur from ZVAl to the structural Fe(III) of the clay through the basal plane or edge of clays triggered by ball milling. Thus, the partially produced Fe(II) on the clay surface promoted the Fenton-like reaction to decompose H2O2 into OH for efficient oxidation of 4-CP. In short, the ZVAl composites with Fe-bearing clays deserved further exploration as potential materials for efficient degradation of organic matters in wastewater samples.
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Affiliation(s)
- Ran Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Jun Cai
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Hu Yang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
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Jia D, Sun W. Silver nanoparticles offer a synergistic effect with fluconazole against fluconazole-resistant Candida albicans by abrogating drug efflux pumps and increasing endogenous ROS. Infect Genet Evol 2021; 93:104937. [PMID: 34029724 DOI: 10.1016/j.meegid.2021.104937] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 04/23/2021] [Accepted: 05/19/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVES A frequent emergence of drug resistance has been observed and posed great threat to global public health recently. This work aimed to investigate the potential synergistic effect and the underlying mechanisms of AgNPs-fluconazole combination more extensively through 2 clinically isolated fluconazole-resistant Candida albicans (C. albicans) strains. METHODS Antifungal properties of AgNPs and fluconazole alone or together against planktonic cells and biofilms were tested. Cellular and molecular targets associated with fluconazole resistance were monitored after AgNPs treatment. Antifungal potential of AgNPs-fluconazole combination was also explored in vivo using a mouse model of disseminated candidiasis. Tissue burden and survival rate were analyzed. RESULTS The results indicated that AgNPs worked synergistically with fluconazole against both planktonic cells of fluconazole-resistant C. albicans and biofilms formed <12 h. AgNPs treatment down-regulated ERG1, ERG11, ERG25, and CDR2, decreased membrane ergosterol levels and membrane fluidity, reduced membrane content of Cdr1p, Cdr2p, and thus efflux bump activity. The elevated ROS production was also a likely cause of the synergistic effect. In vivo, AgNPs and fluconazole combination significantly decreased the fungal burden and improved the survival rate of infected mice. CONCLUSION In conclusion, these results further confirm that AgNPs-fluconazole combination is a hopeful strategy for the treatment of fluconazole-resistant fungal infections.
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Xu D, Xiong Y, Zhang S, Su Y. The synergistic mechanism between coke depositions and gas for H 2 production from co-pyrolysis of biomass and plastic wastes via char supported catalyst. Waste Manag 2021; 121:23-32. [PMID: 33341691 DOI: 10.1016/j.wasman.2020.11.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 11/21/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Co-pyrolysis of biomass and polyethylene(PE) wastes with different blending ratios were performed in a bench-scale fixed bed over Ni/char catalyst. The synergistic mechanism between coke depositions and gas products during co-pyrolysis was studied for better regulation of H2 production. The results showed that feedstock blending ratio played a decisive role in competitive growth of amorphous coke and multi-walled carbon nanotubes (CNTs) on the catalyst surface. For low PE ratio (≤50 wt%) a negative synergy on H2 yield was generated. It was ascribed to more oxygenates that were more inclined than hydrocarbons to be absorbed by porous char to form amorphous coke, which encapsulated Ni active sites and internal pore channel of catalyst, thus resulting in deactivation of catalyst. For higher PE content, Ni/char catalyst produced more than triple the amounts of H2 yield (42.28 mmol/gfeedstock) as compared to low PE ratio (11.3 mmol/gfeedstock). A maximum positive synergy on syngas quality was yielded at 75% PE. Despite the high yield (37.8 wt%) of deposited coke, more hydrocarbon gas from plastic pyrolysis condensed on catalyst and promoted CNTs growth via dehydrogenation and polymerization, simultaneously generating H2. The unique hollow tubular structure and tip-growth mode of CNTs exposed more Ni active sites and endowed catalyst with lower deactivation extent. The scission of more chain hydrocarbons was subsequently enhanced to interact with oxygenated compounds. Therefore, appropriate PE ratios (>50%) can exert a positive synergy on gaseous conversion by regulating coke nature during co-pyrolysis of biomass and plastics. Furthermore, coke structure rather than content seems to exert more significant effect.
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Affiliation(s)
- Dan Xu
- Key Laborator y of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Yuanquan Xiong
- Key Laborator y of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China.
| | - Shuping Zhang
- Key Laborator y of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China; School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Yinhai Su
- Key Laborator y of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
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Cui T, Wang Y, Wang X, Zhang Y, Han W, Li J, Sun X, Shen J, Wang L. Enhanced isophthalonitrile complexation-reduction removal using a novel anaerobic fluidized bed reactor in a bioelectrochemical system based on electric field activation (AFBR-EFA). Bioresour Technol 2020; 306:123115. [PMID: 32160580 DOI: 10.1016/j.biortech.2020.123115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 02/26/2020] [Accepted: 03/01/2020] [Indexed: 06/10/2023]
Abstract
On account of the recalcitrant and highly toxicity of organonitrile substrates, traditional processes are limited by HCN poisoning thus inefficient. This article proposed a novel anaerobic fluidized bed reactor with electric field activation (AFBR-EFA) which had a 260-day continuous operation. The operation aims to explore the practicability of the enhanced reduction of isophthalonitrile (IPN), with emphasis on the optimum operation parameters and synergistic effect between electric field and anaerobic processes. The results showed that relatively higher voltage (1.0 V < V < 1.6 V) had a positive impact on reduction enhancement. High removal could be obtained at high initial concentration, low methanol dosage and short HRT which indicated that tolerance to shock loading was significantly enhanced in AFBR-EFA. Furthermore, EFA visibly motivated the enrichment of electrochemically active bacteria and various autotrophic IPN degradation-related species. The significantly efficient performance makes the potential for full-scale application of the AFBR-EFA markedly improved, particularly for treating hard-biodegraded contaminants.
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Affiliation(s)
- Tao Cui
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yi Wang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xueye Wang
- Nanjing Yuanheng Environmental Research Institute Co. LTD, China
| | - Yonghao Zhang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China
| | - Weiqing Han
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Jiansheng Li
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Xiuyun Sun
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Jinyou Shen
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Lianjun Wang
- Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
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Cheng Z, Li C, Chen D, Chen J, Zhang S, Ye J, Yu J, Dionysiou DD. A novel array of double dielectric barrier discharge combined with TiCo catalyst to remove high-flow-rate toluene: Performance evaluation and mechanism analysis. Sci Total Environ 2019; 692:940-951. [PMID: 31539998 DOI: 10.1016/j.scitotenv.2019.07.318] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 07/13/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
A novel array double dielectric barrier discharge (ADDBD) combined with a TiO2/Al2O3-Co3O4/AC (TiCo) catalyst was applied to remove toluene. The effects of catalyst setting distance, catalyst combination mode, and process factors (including specific input energy, initial toluene concentration, and relative humidity) were investigated in terms of the toluene degradation efficiency (ηtoluene) and the selectivity of CO2 (SCO2). When the specific input energy was 65 J·L-1, the initial toluene concentration was 100 mg·m-3, and the relative humidity was 30%, the highest ηtoluene of 72% and SCO2 of 44% could be achieved with TiO2/Al2O3 10 cm and Co3O4/AC 20 cm downstream of the ADDBD. Based on the determination of active substances (e.g., O3, OH) and the catalyst activation mode, a synergistic effect of active substances and photon between the ADDBD and the TiCo catalyst was proposed for the removal of toluene. Finally, the biodegradability and toxicity of the outlet gas were evaluated, and the results showed that the outlet gas was more convenient for subsequent biopurification and less toxic to the surroundings after the treatment by the ADDBD combined with the TiCo catalyst.
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Affiliation(s)
- Zhuowei Cheng
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Chao Li
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Dongzhi Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Jianmeng Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China.
| | - Shihan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Jiexu Ye
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Jianming Yu
- College of Environment, Zhejiang University of Technology, Hangzhou 310009, China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA.
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Li P, Bao Z, Wang G, Xu P, Wang X, Liu Z, Guo Y, Deng J, Zhang W. Ternary semiconductor metal oxide blends grafted Ag@AgCl hybrid as dimensionally stable anode active layer for photoelectrochemical oxidation of organic compounds: Design strategies and photoelectric synergistic mechanism. J Hazard Mater 2019; 362:336-347. [PMID: 30243257 DOI: 10.1016/j.jhazmat.2018.09.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 09/06/2018] [Accepted: 09/12/2018] [Indexed: 06/08/2023]
Abstract
The development of ultra-efficient, sustainable, and easily accessible anode with relative non-precious semiconducting metal oxides is highly significant for application in the practical treatment of organically polluted water. Herein, we report SnO2, TiO2, and Ag2O ternary semiconductor metal oxide blend grafted Ag@AgCl hybrids, prepared with the one-step sol-gel method and applied as a dimensionally stable anode (DSA)-active layer on a SnO2-Sb/Ti electrode. Factors affecting crystal formation, including the presence or absence of O2 during calcination, the calcination temperature, and Ag@AgCl additive dosage were discussed. The micromorphology, phase composition, and photoelectrochemical activity of the newly designed anode were comprehensively characterized. The optimized preparation, which yielded a solid-solution structure with flat and smooth surface and well-crystallized lattice configuration, occurred in the absence of O2 during calcination at 550 ℃ with an Ag@AgCl additive dosage of 0.2 g in the sol-gel precursor. The newly designed DSA displayed improved electrocatalysis (EC) and photoelectrical catalysis (PEC) capacity. The phenol and its TOC removal efficiency reached 90.65% and 58.17% for 10 mA/cm2 current density with a metal halide lamp in 3 h. The lifespan was four times that of SnO2-Sb/Ti electrode. This proposed DSA construction strategy may support improved EC and PEC reactivities toward the decomposition of organic pollutants.
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Affiliation(s)
- Peng Li
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang City, Jiangxi 330013, PR China; School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China.
| | - Zhun Bao
- School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
| | - Guanghui Wang
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang City, Jiangxi 330013, PR China; School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China.
| | - Pengfei Xu
- School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
| | - Xuegang Wang
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang City, Jiangxi 330013, PR China; School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
| | - Zhipeng Liu
- School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
| | - Yadan Guo
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang City, Jiangxi 330013, PR China; School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
| | - Jing Deng
- College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Weimin Zhang
- State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang City, Jiangxi 330013, PR China; School of Water Resource & Environmental Engineering, East China University of Technology, Nanchang City, Jiangxi 330013, PR China
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Ma W, Han Y, Xu C, Han H, Zhong D, Zhu H, Li K. The mechanism of synergistic effect between iron-carbon microelectrolysis and biodegradation for strengthening phenols removal in coal gasification wastewater treatment. Bioresour Technol 2019; 271:84-90. [PMID: 30265956 DOI: 10.1016/j.biortech.2018.09.084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/13/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
A novel iron-carbon microelectrolysis (ICME) inoculated with activated sludge (AS) process was specifically designed to look into the roles of microelectrolysis and biodegradation as well as their synergistic effect on phenols removal in coal gasification wastewater (CGW) treatment. The results indicated that the removal efficiency of COD, phenols and TOC in integrated ICME-AS process reached 87.36 ± 2.98%, 92.62 ± 0.76% and 84.45 ± 0.65%, respectively. Moreover, phenols-degrading bacteria and electrochemical-active bacteria presented better adaptability to phenolic impact. Meanwhile their syntrophic interaction was driven under the simulation of microelectrolysis. Furthermore, electrochemical redox efficiency was significantly improved, and the corresponding maximum power output reached 0.043 ± 0.01 mW/cm2. Apparently, the synergistic effect between microelectrolysis and biological action effectively strengthened phenols degradation and electricity generation. The results proved that the integrated ICME-AS process was a promising technology applied for CGW and other refractory industrial wastewater treatments.
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Affiliation(s)
- Weiwei Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Yuxing Han
- School of Engineering, South China Agricultural University, Guangzhou 510642, China
| | - Chunyan Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Dan Zhong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China.
| | - Hao Zhu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Kun Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
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Wei PL, Gu H, Liu J, Wang Z. Development of Fangjiomics for Systems Elucidation of Synergistic Mechanism Underlying Combination Therapy. Comput Struct Biotechnol J 2018; 16:565-572. [PMID: 30546857 PMCID: PMC6279955 DOI: 10.1016/j.csbj.2018.10.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 02/08/2023] Open
Abstract
The rapid development of omics technology provides an opportunity for fulfilling the understanding of the synergistic mechanism of combination therapy. However, a systems theory to analyze synergy remains an ongoing challenge. Fangjiomics is a novel systems science based on a holistic theory integrated with reductionism which has been utilized to systematically elucidate the synergistic mechanisms underlying combination therapy using multi-target-, pathway- or network-based quantitative methods. Besides, our ability to understand the polyhierarchical structure in synergy is driven based on multi-level omics data fusion in Fangjiomics. According to the basic principle of “Jun-Chen-Zuo-Shi”, further global integration across various omics platforms and phenotype-driven quantitative multi-scale modeling would accelerate development in Fangjiomics-based dissection of synergy in multi-drug combination therapies. Fangjiomics is a novel systems science based on a holistic theory integrated with reductionism. We developed the pathway-based analysis of synergistic mechanisms in Fangjiomics. The theory of network-based synergistic targets is proposed in Fangjiomics. The hierarchical relationship of synergy in multilevel omics is dissected in Fangjiomics. The principle of “Jun-Chen-Zuo-Shi” is proposed to accelerate the development in Fangjiomics-based dissection of synergy.
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Affiliation(s)
- Peng-Lu Wei
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Hao Gu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jun Liu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Zhong Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing 100700, China
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Ghaffar A, Zhu X, Chen B. Biochar composite membrane for high performance pollutant management: Fabrication, structural characteristics and synergistic mechanisms. Environ Pollut 2018; 233:1013-1023. [PMID: 29029834 DOI: 10.1016/j.envpol.2017.09.099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 09/20/2017] [Accepted: 09/30/2017] [Indexed: 05/28/2023]
Abstract
Biochar, a natural sourced carbon-rich material, has been used commonly in particle shape for carbon sequestration, soil fertility and environmental remediation. Here, we report a facile approach to fabricate freestanding biochar composite membranes for the first time. Wood biochars pyrolyzed at 300 °C and 700 °C were blended with polyvinylidene fluoride (PVdF) in three percentages (10%, 30% and 50%) to construct membranes through thermal phase inversion process. The resultant biochar composite membranes possess high mechanical strength and porous structure with uniform distribution of biochar particles throughout the membrane surface and cross-section. The membrane pure water flux was increased with B300 content (4825-5411 ± 21 L m-2 h-1) and B700 content (5823-6895 ± 72 L m-2 h-1). The membranes with B300 were more hydrophilic with higher surface free energy (58.84-60.31 mJ m-2) in comparison to B700 (56.32-51.91 mJ m-2). The biochar composite membranes indicated promising adsorption capacities (47-187 mg g-1) to Rhodamine B (RhB) dye. The biochar membranes also exhibited high retention (74-93%) for E. coli bacterial suspensions through filtration. After simple physical cleaning, both the adsorption and sieving capabilities of the biochar composite membranes could be effectively recovered. Synergistic mechanisms of biochar/PVdF in the composite membrane are proposed to elucidate the high performance of the membrane in pollutant management. The multifunctional biochar composite membrane not only effectively prevent the problems caused by directly using biochar particle as sorbent but also can be produced in large scale, indicating great potential for practical applications.
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Affiliation(s)
- Abdul Ghaffar
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
| | - Xiaoying Zhu
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollution Process and Control, Hangzhou 310058, China.
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Sun W, Wang D, Yu C, Huang X, Li X, Sun S. Strong synergism of dexamethasone in combination with fluconazole against resistant Candida albicans mediated by inhibiting drug efflux and reducing virulence. Int J Antimicrob Agents 2017; 50:399-405. [PMID: 28673609 DOI: 10.1016/j.ijantimicag.2017.03.015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 03/24/2017] [Accepted: 03/29/2017] [Indexed: 11/24/2022]
Abstract
Candida albicans is the most commonly isolated Candida spp. in the clinic and its resistance to fluconazole (FLC) has been emerging rapidly. Combination therapy may be a potentially effective approach to combat drug resistance. In this study, the combination antifungal effects of dexamethasone (DXM) and FLC against resistant C. albicans in vitro were assayed using minimum inhibitory concentrations (MICs), sessile MICs and time-kill curves. The in vivo efficacy of this drug combination was evaluated using a Galleria mellonella model by determining survival rate, fungal burden and histological damage. In addition, the impact of DXM on efflux pump activity was investigated using a rhodamine 6G assay. Expression of CDR1, CDR2 and MDR1 was determined by real-time quantitative PCR, and extracellular phospholipase activity was detected by the egg yolk agar method to reveal the potential synergistic mechanism. The results showed that DXM potentiates the antifungal effect of FLC against resistant C. albicans strains both in vitro and in vivo, and the synergistic mechanism is related to inhibiting the efflux of drugs and reducing the virulence of C. albicans.
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Affiliation(s)
- Wenwen Sun
- School of Pharmaceutical Sciences, Taishan Medical University, Taian, Shandong Province, China
| | - Decai Wang
- School of Pharmaceutical Sciences, Taishan Medical University, Taian, Shandong Province, China
| | - Cuixiang Yu
- Respiration Medicine, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Xin Huang
- Pharmaceutical Department, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong Province, China
| | - Xiuyun Li
- School of Pharmaceutical Sciences, Shandong University, Jinan, Shandong Province, China
| | - Shujuan Sun
- Pharmaceutical Department, Qianfoshan Hospital Affiliated to Shandong University, Jinan, Shandong Province, China.
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Liu ZH, Wang DM, Fan SF, Li DW, Luo ZW. Synergistic effects and related bioactive mechanism of Potentilla fruticosa L. leaves combined with Ginkgo biloba extracts studied with microbial test system (MTS). Altern Ther Health Med 2016; 16:495. [PMID: 27905920 PMCID: PMC5134079 DOI: 10.1186/s12906-016-1485-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 11/14/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Potentilla fruticosa, also called "Jinlaomei" and "Gesanghua", is widely used as folk herbs in traditional Tibetan medicine in China to treat inflammations, wounds, certain forms of cancer, diarrhoea, diabetes and other ailments. Previous research found P. fruticosa leaf extract (C-3) combined with Ginkgo biloba extracts (EGb) showed obvious synergistic effects in a variety of oxidation systems. The aim of the present study was to further confirm the synergy of P. fruticosa combined with EGb viewed from physiological bioavailability and explore the related bioactive mechanism behind the synergism. METHODS The microbial test system (MTS) was adopted to evaluate the related bioactive mechanism. The synergistic effects were evaluated by isobolographic analysis. The H2O2 production rate and antioxidant enzyme (Catalase (CAT), Peroxidase (POD), Superoxide dismutase (SOD), Glutathione peroxidase (GSH-PX)) activities were determined by the colorimetric method. Enzyme gene (CAT, SOD) expression was measured by real time-PCR. RESULTS The MTS antioxidant activity results showed the combination of C-3 + EGb exhibited synergistic effects especially at the ratio 5:1. Components of isorhamnetin and caffeic acid in C-3 and EGb displayed strong antioxidant activities on MTS and their combination also showed significant synergy in promoting H2O2 production. The combinations of C-3 + EGb and isorhamnetin + caffeic acid promoted CAT and SOD enzyme activities and the ratio 1:1 exhibited the strongest synergy while no obvious promotion on POD and GSH-PX enzyme activities was found. Both combinations above promoted gene expression of CAT and SOD enzymes and the ratio 1:1 exhibited the strongest synergy. CONCLUSIONS Antioxidant activity results in MTS further confirmed the significant synergy of C-3 combined with EGb and isorhamnetin combined with caffeic acid. The synergy of C-3 combined with EGb may be attributed to the combination of isorhamnetin + caffeic acid, which promoted CAT and SOD enzyme gene expression and further promoted the enzyme activities in E. coli. This study could further provide rational basis for optimizing the physiological bioavailability of P. fruticosa by using natural and safe antioxidants in low doses to produce new medicines and functional products.
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Bao H, Shao X, Zhang Y, Cheng J, Wang Y, Xu X, Fang J, Liu Z, Li Z. IPPA08 allosterically enhances the action of imidacloprid on nicotinic acetylcholine receptors. Insect Biochem Mol Biol 2016; 79:36-41. [PMID: 27793626 DOI: 10.1016/j.ibmb.2016.10.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 10/21/2016] [Accepted: 10/24/2016] [Indexed: 06/06/2023]
Abstract
Our previous study showed that IPPA08, a cis-configuration neonicotinoid compound with unique oxabridged substructure, acted as a specific synergist to neonicotinoid insecticides targeting nicotinic acetylcholine receptors (nAChRs). Heteropentamer nAChRs have diverse characteristics and can form canonical and noncanonical subunit interfaces. While canonical interfaces have been exploited as targets of many drugs, noncanonical interfaces have received less attention. In this study, the mechanism of IPPA08 synergism was evaluated on hybrid nAChRs consisting of three α1 subunits from the brown planthopper and two rat β1 subunits (Nlα1/rβ2) expressed in Xenopus oocytes. IPPA08 alone evoked inward currents, but only at very high concentrations, greater than 1 mM. However, at concentrations below 200 μM, IPPA08 slowed the decay of inward currents evoked by imidacloprid, but not by acetylcholine, and also increased the sensitivity of Nlα1/rβ2 to imidacloprid. Both modulations by IPPA08 were concentration-dependent in the same concentration range of 10-150 μM. Experimentally induced mutations in canonical (α+/β-) and noncanonical (β+/α-) interfaces of Nlα1/rβ2 receptors were also examined to evaluate the presence of possible binding sites for IPPA08 on the receptors. Our results showed that mutations in the canonical interfaces affected only the potency of IPPA08 as an agonist, while mutations in the noncanonical interfaces affected only the synergistic action of IPPA08. Based on these results, we propose that at low concentrations IPPA08 can act as a positive allosteric modulator of noncanonical interfaces, and likely slow the decay of currents through stabilizing the open-channel state caused by the action of imidacloprid on canonical interfaces.
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Affiliation(s)
- Haibo Bao
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, St. Zhongling 50, Nanjing 210014, China; Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Yixi Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China; Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Yunchao Wang
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China
| | - Jichao Fang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, St. Zhongling 50, Nanjing 210014, China
| | - Zewen Liu
- Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education), College of Plant Protection, Nanjing Agricultural University, Weigang 1, Nanjing 210095, China.
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Meilong Road 130, Shanghai 200237, China.
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Xia D, An T, Li G, Wang W, Zhao H, Wong PK. Synergistic photocatalytic inactivation mechanisms of bacteria by graphene sheets grafted plasmonic AgAgX (X = Cl, Br, I) composite photocatalyst under visible light irradiation. Water Res 2016; 99:149-161. [PMID: 27155987 DOI: 10.1016/j.watres.2016.04.055] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 04/21/2016] [Accepted: 04/21/2016] [Indexed: 05/24/2023]
Abstract
By coupling graphene sheet and plasmonic photocatalysis technologies, a series of AgAgX/RGOs (X = Cl, Br, I; RGO = reduced graphene oxide) composites were prepared and found to be efficient antimicrobial agents for water disinfection upon visible light. Attributed to the efficient charge transfer by RGO sheets, the optimum AgAgBr/0.5% RGO could completely inactivate 2 × 10(7) cfu mL(-1) of Escherichia coli within 8 min, much faster than bare AgAgBr within 35 min. The synergistic antimicrobial mechanism of AgAgBr/0.5% RGO was studied by Ag(+) ions release evaluation, radical scavengers study, and radical determination. The enhanced photocatalytic activity of irradiated AgAgBr/0.5% RGO originated from the synergistic activities of its three components including Ag, AgBr and RGO, and the proposed mechanisms contained enhanced attraction by RGO followed by two pathways: primary oxidative stress caused by plasma induced reactive species like H2O2 and bactericidal effect of released Ag(+) ions. Furthermore, characterization of E. coli cells using SEM, fluorescent microscopy, and cytoplasmic substance leakage illustrated that VL irradiated AgAgBr/0.5% RGO could not only cause metabolic dysfunction but also destroy the cell envelope and biomolecular, while irradiated Ag(+) ions play a differential bactericidal action with a limited metabolic injury and no cell-membrane damage. The present work provides an efficient water disinfection technology and also opens a new idea in studying the antimicrobial mechanism of plasmonic photocatalyst.
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Affiliation(s)
- Dehua Xia
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong Special Administrative Region
| | - Taicheng An
- Institute of Environmental Health and Pollution Control and School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| | - Guiying Li
- Institute of Environmental Health and Pollution Control and School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Wanjun Wang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong Special Administrative Region
| | - Huijun Zhao
- Centre for Clean Environment and Energy, Gold Coast Campus, Griffith University, Queensland 4222, Australia
| | - Po Keung Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, NT, Hong Kong Special Administrative Region.
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