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Purnomo AS, Hairunnisa FW, Misdar, Maria VP, Rohmah AA, Putra SR, Putro HS, Rizqi HD. Anionic dye removal by immobilized bacteria into alginate-polyvinyl alcohol-bentonite matrix. Heliyon 2024; 10:e27871. [PMID: 38533018 PMCID: PMC10963318 DOI: 10.1016/j.heliyon.2024.e27871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 03/01/2024] [Accepted: 03/07/2024] [Indexed: 03/28/2024] Open
Abstract
Methyl orange (MO) is commonly used in the textile dyeing industry, posing serious health and environmental hazards due to its carcinogenic, mutagenic properties, and potential for bioaccumulation. Appropriate handling is needed to solve these problems by harnessing the capacity of living microorganisms and the adsorption properties of bentonite clay minerals. Although the conventional approach predominantly depends on free cells, recent study has developed other methods such as immobilization techniques. Therefore, this study aimed to investigate the efficiency of the immobilization matrix comprising sodium alginate (SA), polyvinyl alcohol (PVA), and bentonite by modifying Pseudomonas aeruginosa, Bacillus subtilis, and Ralstonia pickettii for MO removal of 50 mg/L. In the free cell technique, the results showed that the MO decreased to 43.13, 36.61, and 27.45% for each of the bacteria within 10 days at 35 °C. The bacterial immobilization technique, including live immobilized P. aeruginosa (LIPa), live immobilized B. subtilis (LIBs), and live immobilized R. pickettii (LIRp) beads also demonstrated significant efficiency, achieving MO removal rates up to 97.15, 95.65, and 66.63% within 10 days. These synthesized beads showed reusability, with LIPa, LIBs, and LIRp being used up to 4, 4, and 2 cycles, respectively. The external and internal surface conditions were observed using SEM instrument and the results showed that all components were agglomerated. Comparisons using dead bacterial biomass indicated that treatment with live bacteria consistently yielded significantly higher removal rates. These results showed the effectiveness of immobilized bacteria in MO removal, offering a promising potential in reducing pollutants.
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Affiliation(s)
- Adi Setyo Purnomo
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Frida Wahyu Hairunnisa
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Misdar
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Virda Putri Maria
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Alya Awinatul Rohmah
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Surya Rosa Putra
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Herdayanto Sulistyo Putro
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Hamdan Dwi Rizqi
- Department of Chemistry, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS Sukolilo, Surabaya 60111, Indonesia
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2
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Tamer TM, Abbas R, Sadik WA, Omer AM, Abd-Ellatif MM, Mohy-Eldin MS. Development of novel amino-ethyl chitosan hydrogel for the removal of methyl orange azo dye model. Sci Rep 2024; 14:1284. [PMID: 38218926 PMCID: PMC10787832 DOI: 10.1038/s41598-024-51538-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 01/06/2024] [Indexed: 01/15/2024] Open
Abstract
The present study introduces a new and straightforward method for the amination of Chitosan. This method involves coupling Chitosan (CS) with 2-chloroethylamine (ENH2) in a single step to produce an amino-ethyl Chitosan derivatives with increased amine group content (CS-ENH2) using click chemistry. The resulting derivatives were then crosslinked using Glutaraldehyde to form amino-ethyl Chitosan Schiff bases. The novel amino-ethyl Chitosan Schiff bases were subsequently utilized as adsorbents for the removal of Methyl Orange (MO) dye from aqueous solutions using a batch technique, and the performance of the produced Schiff bases was compared with that of the native Chitosan Schiff base. The CS-ENH2 adsorbents show improved adsorption capacity up to 300% of the native Chitosan Schiff base with almost double removal rate. The adsorption temperature has a positive impact in general while almost 100% of MO removed at 60 °C using CS-ENH2 adsorbents compared with 66% of the native Chitosan Schiff base adsorbent. The adsorption pH shows a negative impact on the MO removal percent. That effect reduced sharply using the CS-ENH2 adsorbents with higher amination degree while the MO removal percent almost being constant over a wide range of pH; 2.0-7.0. The agitation speed has the same positive effect over all the adsorbents. However, the rate of MO removal percent decreased with increase the agitation speed up to 250 rpm. The experimental findings demonstrated that the highest percentage of MO dye removal was achieved under the conditions of pH 2.0, a temperature of 60 °C, agitation speed of 250 rpm, and adsorption duration of 90 min. These Schiff bases were subsequently characterized using advanced analytical techniques including Fourier Transform Infrared spectroscopy, Thermal analysis (TGA and DSC), and Scanning Electron Microscopy.
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Affiliation(s)
- Tamer M Tamer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), P.O. Box 21934, New Borg El-Arab City, Alexandria, Egypt
| | - Rafik Abbas
- Institute of Graduate Studies and Research, Alexandria University, P.O:832, Qesm Bab Sharqi, 21526, Alexandria, Egypt
| | - Wagih A Sadik
- Institute of Graduate Studies and Research, Alexandria University, P.O:832, Qesm Bab Sharqi, 21526, Alexandria, Egypt
| | - Ahmed M Omer
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), P.O. Box 21934, New Borg El-Arab City, Alexandria, Egypt
| | - Mai M Abd-Ellatif
- Institute of Graduate Studies and Research, Alexandria University, P.O:832, Qesm Bab Sharqi, 21526, Alexandria, Egypt
| | - Mohamed S Mohy-Eldin
- Polymer Materials Research Department, Advanced Technologies and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City), P.O. Box 21934, New Borg El-Arab City, Alexandria, Egypt.
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3
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Lin X, Zhou Q, Xu H, Chen H, Xue G. Advances from conventional to biochar enhanced biotreatment of dyeing wastewater: A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 907:167975. [PMID: 37866601 DOI: 10.1016/j.scitotenv.2023.167975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/04/2023] [Accepted: 10/18/2023] [Indexed: 10/24/2023]
Abstract
DW (Dyeing wastewater) contains a large amount of dye organic compounds. A considerable proportion of dye itself or its intermediate products generated during wastewater treatment process exhibits CMR (Carcinogenic/Mutagenic/Toxic to Reproduction) toxicity. Compared with physicochemical methods, biological treatment is advantageous in terms of operating costs and greenhouse gas emissions, and has become the indispensable mainstream technology for DW treatment. This article reviews the adsorption and degradation mechanisms of dye organic compounds in wastewater and analyzed different biological processes, ranging from traditional methods to processes enhanced by biochar (BC). For traditional biological processes, microbial characteristics and communities were discussed, as well as the removal efficiency of different bioreactors. BC has adsorption and redox electron mediated effects, and coupling with biological treatment can further enhance the process of biosorption and degradation. Although BC coupled biological treatment shows promising dye removal, further research is still needed to optimize the treatment process, especially in terms of technical and economic competitiveness.
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Affiliation(s)
- Xumeng Lin
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Qifan Zhou
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Huanghuan Xu
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Hong Chen
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China
| | - Gang Xue
- College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200000, China.
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Wang K, Zhang H, Shen Y, Li J, Zhou W, Song H, Liu M, Wang H. Impact of salinity on anaerobic ceramic membrane bioreactor for textile wastewater treatment: Process performance, membrane fouling and machine learning models. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 345:118717. [PMID: 37536141 DOI: 10.1016/j.jenvman.2023.118717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 06/25/2023] [Accepted: 07/26/2023] [Indexed: 08/05/2023]
Abstract
Anaerobic membrane bioreactor (AnMBR) shows great potential for textile wastewater treatment, but high salinity in the influent may undermine its performance. This study evaluated the impact of salinity on the treatment performance of an upflow anaerobic sludge blanket (UASB) configured AnMBR using a flat sheet ceramic membrane. The salinity was stepwise increased (0, 5, 10 and 20 g/L) in four phases of the AnMBR operation. Results indicated that increased salinity jeopardized the COD removal efficiency of AnMBR from 92% to 73%, but had a marginal effect on dye removal efficacy (90-96%). Low salinity (5 g/L) boosted the biogas production whilst high salinity (>10 g/L) had a negative impact. Additionally, the increase of salinity resulted in the soluble microbial production (SMP) concentration soar and membrane fouling rate increase, peaking at a salinity of 10 g/L (Phase III) and recovering back to a lower level at a salinity of 20 g/L (Phase IV). This indicated a transition occurrence at a salinity of 10 g/L (Phase III). The microbial diversity analyses further suggested a transition from salinity-sensitive microbes (Aminiphilus, Caldatribacterium, Mesotoga, Methanobrevibacter, Methanobacterium, Methanosaeta) to salinity-tolerant microbes (Longilinea, Ignavibacterium, Rhodovarius, Bosea and Flexilinea). This transition can be associated with the increase SMP concentration and more severe membrane fouling in Phase III, which were mitigated after a new equilibrium was reached when the microbial consortium acclimatized to the high salinity. Finally, a machine learning model of the Adaboost algorithm was established to predict COD removal under different salinities. Importantly, this study revealed that AnMBR process performance and membrane operation can be maintained for high salinity textile wastewater treatment with a halophilic microbial community growth under high-salinity selection pressure.
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Affiliation(s)
- Kanming Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China; College of Architecture and Environment, Sichuan University, Chengdu, 610000, China; Shaoxing Research Institute, Zhejiang University of Technology, Shaoxing, 312000, Zhejiang, China
| | - Haoliang Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Yuxiang Shen
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jiale Li
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Wu Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Hualong Song
- Shaoxing Water Treatment Development Co., Ltd, Shaoxing, 312074, Zhejiang, China
| | - Min Liu
- College of Architecture and Environment, Sichuan University, Chengdu, 610000, China
| | - Hongyu Wang
- College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
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Zhu Y, Ma L, Hai X, Yang Z, Li X, Chen M, Yuan M, Xiong H, Gao Y, Wang L, Shi F. Adsorption of methyl orange by porous membranes prepared from deep eutectic supramolecular polymer-modified chitosan. ENVIRONMENTAL RESEARCH 2023; 236:116778. [PMID: 37517482 DOI: 10.1016/j.envres.2023.116778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/13/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
The fabrication of an adsorbent with excellent performance has been a focus of attention because of the toxicity, mutagenicity and carcinogenicity of methyl orange (MO)-containing wastewater discharged from the textile, tannery and pharmaceutical industries. In this study, chitosan (CS) membranes were modified with a deep eutectic supramolecular polymer (DESP), and adsorbent membranes with porous structures were prepared with polyethylene glycol (PEG). Microstructural characterization of the CS-DESP-PEG composite membranes with FT-IR, XRD and SEM showed that the membranes had amorphous crystalline structures and that hydrogen bonding interactions weakened the crystallinity and formed loose porous structures. Optimization of the chitosan to β-cyclodextrin ratio, pH, PEG proportion, MO concentration and adsorbent dose significantly improved the adsorption efficiencies of the membranes. The adsorption behaviours of the membranes were fit with pseudo-second-order adsorption kinetics and the Freundlich adsorption isotherm model. Regeneration experiments showed that the membranes were reusable multiple times and maintained good adsorption capacities.
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Affiliation(s)
- Yun Zhu
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China; Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, 650504, PR China.
| | - Lei Ma
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
| | - Xiaoping Hai
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
| | - Zhi Yang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
| | - Xiaofen Li
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
| | - Minghong Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, 650504, PR China
| | - Mingwei Yuan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming, 650504, PR China
| | - Huabin Xiong
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming, 650504, PR China; National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming, 650504, PR China.
| | - Yuntao Gao
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China; National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, Yunnan Minzu University, Kunming, 650504, PR China.
| | - Lina Wang
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
| | - Feng Shi
- School of Chemistry and Environment, Yunnan Minzu University, Kunming, 650504, PR China
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6
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Rekaby M, Abou-Aly AI, El-Khatib M. Preparation and characterization of a novel nanocomposite based on MnCr-layered double oxide and CoFe 2O 4 spinel ferrite for methyl orange adsorption. Sci Rep 2023; 13:18006. [PMID: 37865692 PMCID: PMC10590389 DOI: 10.1038/s41598-023-45136-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 10/16/2023] [Indexed: 10/23/2023] Open
Abstract
Herein, the adsorption of methyl orange (MO), a dangerous anionic dye, from an aqueous solution was investigated using a novel magnetic nanocomposite adsorbent. A nanocomposite entitled manganese chromium-layered double oxide/cobalt spinel ferrite, (MnCr)-LDO5wt.%/CoFe2O4, which links the interlayer structural characteristics of layered double oxides (LDOs) with the magnetic properties of spinel ferrites (SFs) was synthesized using the eco-friendly co-precipitation technique. Determination of structural parameters, crystallite size, and micro-strain was done using X-ray diffraction (XRD) analysis. Transmission electron microscopy (TEM) was used to determine grain shape and size. Surface analysis was performed using X-ray photoelectron spectroscopy (XPS) to identify elements and oxidation states present in the prepared nanocomposite. Vibrating sample magnetometer (VSM) was utilized to examine the magnetic characteristic. A comprehensive comparative study about the effectiveness and durability of CoFe2O4 and (MnCr)5wt.%/CoFe2O4 as nanoadsorbents for MO was conducted. Numerous variables, including contact time, MO concentration, adsorbent dosage, and pH were tested for their effects on the adsorption removal percentages. The findings showed that the maximum removal percentage was 86.1% for 25 ppm of MO was for 0.1 g/100 mL of (MnCr)-LDO5wt.%/CoFe2O4 at pH = 3. Investigations of isotherms and kinetics were conducted under batch conditions. The Langmuir isotherm matched the experimental data, for both nanoadsorbents, quite well due to the homogeneous distribution of active sites. Adsorption kinetics data were found to be compatible with intra-particle diffusion and pseudo-second order models for CoFe2O4 and (MnCr)5wt.%/CoFe2O4, respectively. A total of five adsorption-desorption cycles were performed to determine the prepared adsorbents' recyclable nature.
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Affiliation(s)
- M Rekaby
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - A I Abou-Aly
- Department of Physics, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - M El-Khatib
- Department of basic sciences, Faculty of Computer Science and Artificial Intelligence, Pharos University, Alexandria, Egypt
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7
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Yotinov I, Belouhova M, Todorova Y, Schneider I, Topalova Y. Influence of the azo-dye amaranth on the trophic structure of activated sludge in a model experiment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27406-2. [PMID: 37171727 DOI: 10.1007/s11356-023-27406-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 04/30/2023] [Indexed: 05/13/2023]
Abstract
The textile industry generates significant amounts of wastewater containing high concentrations of azo dyes. An important point in the process of purification of azo dyes is their influence on the activated sludge (AS) in wastewater treatment plants. Azo dyes, such as amaranth, play the role of xenobiotics. This article seeks to answer the question of how organisms manage to respond to xenobiotics remains very important and open, i.e., how they will react to toxic conditions. The aim of this research was to study how these changes are expressed in terms of the different trophic levels of AS. In our experiment, it was found that the dominant trophic units are significantly changed due to the xenobiotic entering the system. The data reveal the significant development of the bacterial segment (genus Pseudomonas and azo-degrading bacteria) at times of large amaranth removal. In the most active phase of amaranth biodetoxification (48 h), the culturable bacteria of the genus Pseudomonas change by about 40%, while the azo-degrading bacteria change by about 2%. Fauna organisms have a sharp change in the dominant groups-from attached and crawling ciliates and testate amoebas to the mass development of small and large flagellates. This is of great importance because micro- and metafauna play an important role in the detoxification process by ingesting some of the xenobiotics. This role is expressed in the fact that after dying, macro-organisms release this xenobiotic in small portions so that it can then be effectively degraded by adapting to the amaranth biodegradation bacteria. In this study, it is clear that all these events lead to a decline in the quality of AS. But on the other hand, these allow AS to survive as a microbial community, and the fauna segment does not disappear completely.
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Affiliation(s)
- Ivaylo Yotinov
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8, Dragan Tzankov Blvd., 1164, Sofia, Bulgaria.
- Center of Competence "Clean Technologies for Sustainable Environment-Water, Waste, Energy for Circular Economy", 1000, Sofia, Bulgaria.
| | - Mihaela Belouhova
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8, Dragan Tzankov Blvd., 1164, Sofia, Bulgaria
- Center of Competence "Clean Technologies for Sustainable Environment-Water, Waste, Energy for Circular Economy", 1000, Sofia, Bulgaria
| | - Yovana Todorova
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8, Dragan Tzankov Blvd., 1164, Sofia, Bulgaria
- Center of Competence "Clean Technologies for Sustainable Environment-Water, Waste, Energy for Circular Economy", 1000, Sofia, Bulgaria
| | - Irina Schneider
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8, Dragan Tzankov Blvd., 1164, Sofia, Bulgaria
- Center of Competence "Clean Technologies for Sustainable Environment-Water, Waste, Energy for Circular Economy", 1000, Sofia, Bulgaria
| | - Yana Topalova
- Department of General and Applied Hydrobiology, Faculty of Biology, Sofia University "St. Kliment Ohridski", 8, Dragan Tzankov Blvd., 1164, Sofia, Bulgaria
- Center of Competence "Clean Technologies for Sustainable Environment-Water, Waste, Energy for Circular Economy", 1000, Sofia, Bulgaria
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Zhou H, Ji S, Zhang Q, Jin W, Feng A, Lin C, Li Q. Wastewater treatment: A universal, scalable and recyclable catalyst with adjustable activity for diverse dyes degradation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117188. [PMID: 36603262 DOI: 10.1016/j.jenvman.2022.117188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/22/2022] [Accepted: 12/29/2022] [Indexed: 06/17/2023]
Abstract
The growing concern over water shortage and pollution is propelling and accelerating the development of sewage treatment technologies. Among them, the catalytic hydrogenation method is highly recommended from a sustainable perspective, because it can turn toxic pollutants into valuable raw materials. The catalyst with excellent activity and stability plays a critical role in this "trash to treasure" approach. Herein, we proposed a novel economical, scalable and recyclable candidate catalyst, i.e., the copper nanoparticles supported on zinc oxide nanowire array (Cu-ZnO NWA), for realizing efficient and stable dye wastewater treatment. The salix argyracea-shaped Cu-ZnO NWA displays very outstanding universality and controllability towards the catalytic hydrogenation reactions of diverse dyes, owing to the fact that ZnO nanowire array not only offers a platform to realize stable and homogeneous dispersion of Cu nanoparticles, but also provides a large quantity of catalytically active sites. More attractively, its synthetic method can be facilely extended to various conductive substrates through combined electrodeposition and hydrothermal technique, showing its general applicability for the surface assembly of sewage treatment facilities. Benefiting from above advantages, this proposal offers an attractive approach for large-scale and continuous decolorization of dye wastewater, and presents a broad application prospect in the textile printing industry.
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Affiliation(s)
- Huiqin Zhou
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Shanshan Ji
- Department of Biological and Chemical Engineering, Jining Polytechnic, Jining, 272037, China
| | - Qinqin Zhang
- College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang, 110142, China.
| | - Weihong Jin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
| | - Anlin Feng
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Chaoyu Lin
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China
| | - Qingyang Li
- Institute of Advanced Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, 510632, China.
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9
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Anaerobic Membrane Bioreactor (AnMBR) for the Removal of Dyes from Water and Wastewater: Progress, Challenges, and Future Perspectives. Processes (Basel) 2023. [DOI: 10.3390/pr11030855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
The presence of dyes in aquatic environments can have harmful effects on aquatic life, including inhibiting photosynthesis, decreasing dissolved oxygen levels, and altering the behavior and reproductive patterns of aquatic organisms. In the initial phase of this review study, our aim was to examine the categories and properties of dyes as well as the impact of their toxicity on aquatic environments. Azo, phthalocyanine, and xanthene are among the most frequently utilized dyes, almost 70–80% of used dyes, in industrial processes and have been identified as some of the most commonly occurring dyes in water bodies. Apart from that, the toxicity effects of dyes on aquatic ecosystems were discussed. Toxicity testing relies heavily on two key measures: the LC50 (half-lethal concentration) and EC50 (half-maximal effective concentration). In a recent study, microalgae exposed to Congo Red displayed a minimum EC50 of 4.8 mg/L, while fish exposed to Disperse Yellow 7 exhibited a minimum LC50 of 0.01 mg/L. Anaerobic membrane bioreactors (AnMBRs) are a promising method for removing dyes from water bodies. In the second stage of the study, the effectiveness of different AnMBRs in removing dyes was evaluated. Hybrid AnMBRs and AnMBRs with innovative designs have shown the capacity to eliminate dyes completely, reaching up to 100%. Proteobacteria, Firmicutes, and Bacteroidetes were found to be the dominant bacterial phyla in AnMBRs applied for dye treatment. However, fouling has been identified as a significant drawback of AnMBRs, and innovative designs and techniques are required to address this issue in the future.
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10
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The effects of Ag-ions on the physiochemical characteristics and visible-light catalytic activity of ZnS nanoparticles. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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11
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Optimization and Multifunctional Applications of Polypyrrole-Modified Copper Oxide–Zinc Oxide Nanocomposites. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2022. [DOI: 10.1007/s13369-022-07199-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Mei X, Gao H, Ding Y, Xue C, Xu L, Wang Y, Zhang L, Ma M, Zhang Z, Xiao Y, Yang X, Yin C, Wang Z, Yang M, Xia D, Wang C. Coupling of (methane + air)-membrane biofilms and air-membrane biofilms: Treatment of p-nitroaniline wastewater. JOURNAL OF HAZARDOUS MATERIALS 2022; 435:128946. [PMID: 35468395 DOI: 10.1016/j.jhazmat.2022.128946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 04/06/2022] [Accepted: 04/14/2022] [Indexed: 06/14/2023]
Abstract
Membrane biofilm (MBf) technology is a promising biological water treatment process that combines membrane aeration with biofilms. To expand its application in the treatment of toxic organic wastewater, methane/air gas mixture-MBfs ((CH4 + Air)-MBfs) and air-MBfs were coupled to enhance the treatment of p-nitroaniline (PNA) wastewater. Based on exploration of the membrane permeability of methane and oxygen, a hybrid MBf reactor was constructed, and the degradation characteristics of PNA and the coupling effects of (CH4 + Air)-MBfs and air-MBfs were studied. The permeation flux of methane was found to be 1.114 g/(m2 d) when using a methane/air gas mixture at an aeration pressure of 10 kPa, and this result was better than that when methane was used as the aeration gas alone. Aeration with a methane/air gas mixture provided conditions for realizing aerobic methane oxidation; the aerobic methane oxidation that occurred in the (CH4 + Air)-MBfs promoted the reduction of PNA, and the intermediates of PNA degradation were further degraded by the air-MBfs. At an influent PNA membrane area load of 1.67 g/(m2 d), the PNA removal load reached 187.30 g/(m3 d). The coupling of MBfs took advantage of different matrix-based MBfs and promoted the degradation of PNA by utilizing the synergistic effects of various functional microorganisms.
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Affiliation(s)
- Xiang Mei
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
| | - Han Gao
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yang Ding
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Chao Xue
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Lijie Xu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yong Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Lei Zhang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Mengyuan Ma
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Zimiao Zhang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yanyan Xiao
- Nanjing Haiyi Environmental Protection Engineering Co., Ltd., Nanjing 211200, China
| | - Xu Yang
- Nanjing Haiyi Environmental Protection Engineering Co., Ltd., Nanjing 211200, China
| | - Chengqi Yin
- Environmental Protection Design & Research Center, China Design Group Co., Ltd., Nanjing 210014, China
| | - Zhan Wang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Mengmeng Yang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Dongyu Xia
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Cai Wang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
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13
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Zhang W, Du C, Zhang N, Zheng Z, Tie J. Reactive blue 19 adsorption behaviors of magnesium hydroxide modified biochar derived from the traditional Chinese medical residual. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2022.100517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Raji F, Shayesteh H, Rahbar-Kelishami A. Y-Y microfluidic polymer/salt aqueous two-phase system for optimization of dye extraction: Evaluation of channel geometry. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2059677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Farshad Raji
- Faculty of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Hadi Shayesteh
- Faculty of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Ahmad Rahbar-Kelishami
- Faculty of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
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15
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Khurram R, Nisa ZU, Javed A, Wang Z, Hussien MA. Synthesis and Characterization of an α-Fe 2O 3-Decorated g-C 3N 4 Heterostructure for the Photocatalytic Removal of MO. Molecules 2022; 27:molecules27041442. [PMID: 35209230 PMCID: PMC8877162 DOI: 10.3390/molecules27041442] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 11/21/2022] Open
Abstract
This study describes the preparation of graphitic carbon nitride (g-C3N4), hematite (α-Fe2O3), and their g-C3N4/α-Fe2O3 heterostructure for the photocatalytic removal of methyl orange (MO) under visible light illumination. The facile hydrothermal approach was utilized for the preparation of the nanomaterials. Powder X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray (EDX), and Brunauer–Emmett–Teller (BET) were carried out to study the physiochemical and optoelectronic properties of all the synthesized photocatalysts. Based on the X-ray photoelectron spectroscopy (XPS) and UV-visible diffuse reflectance (DRS) results, an energy level diagram vs. SHE was established. The acquired results indicated that the nanocomposite exhibited a type-II heterojunction and degraded the MO dye by 97%. The degradation ability of the nanocomposite was higher than that of pristine g-C3N4 (41%) and α-Fe2O3 (30%) photocatalysts under 300 min of light irradiation. The formation of a type-II heterostructure with desirable band alignment and band edge positions for efficient interfacial charge carrier separation along with a larger specific surface area was collectively responsible for the higher photocatalytic efficiency of the g-C3N4/α-Fe2O3 nanocomposite. The mechanism of the nanocomposite was also studied through results obtained from UV-vis and XPS analyses. A reactive species trapping experiment confirmed the involvement of the superoxide radical anion (O2•−) as the key reactive oxygen species for MO removal. The degradation kinetics were also monitored, and the reaction was observed to be pseudo-first order. Moreover, the sustainability of the photocatalyst was also investigated.
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Affiliation(s)
- Rooha Khurram
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, China;
| | - Zaib Un Nisa
- Department of Chemistry, School of Natural Sciences (SNS), National University of Sciences and Technology (NUST), H-12, Islamabad 44000, Pakistan;
| | - Aroosa Javed
- Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4, Canada;
| | - Zhan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing 100124, China;
- Correspondence: (Z.W.); (M.A.H.)
| | - Mostafa A. Hussien
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah P.O. Box 80203, Saudi Arabia
- Department of Chemistry, Faculty of Science, Port Said University, Port Said 42521, Eygpt
- Correspondence: (Z.W.); (M.A.H.)
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16
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Che L, Xu H, Wei Z, Wei R, Yang B. Activated carbon modified with nano manganese dioxide triggered electron transport pathway changes for boosted anaerobic treatment of dyeing wastewater. ENVIRONMENTAL RESEARCH 2022; 203:111944. [PMID: 34428451 DOI: 10.1016/j.envres.2021.111944] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/27/2021] [Accepted: 08/20/2021] [Indexed: 06/13/2023]
Abstract
Herein, an expanded granular sludge bed (EGSB) reactor with activated carbon (AC)-nano manganese dioxide (MnO2) added was employed for azo dye wastewater treatment to investigate its effectiveness at decolorizing of azo dyes and removing COD. The results showed that the treatment of azo dye wastewater with the AC-MnO2 modified EGSB reactor gave an 83% average decolorization efficiency, which was more efficient than the pure AC modified EGSB reactor. Moreover, the COD removal and changes in the intermediate products were controlled by AC-MnO2. Additionally, there was a sharp increase in the sludge conductivity, while there was a significant decrease in the coenzyme F420 concentration with long-term operation. Moreover, electrochemical analysis showed that the addition of AC-MnO2 can enhance electron transfer in anaerobic system. The AC-MnO2 can act as redox mediator; in the presence of the Mn4+/Mn2+ cycle, accelerating the electron transfer between the microbial cells and dyes, thereby promoting the decolorization of azo dyes. This caused a decrease in the methanogenic activity. Furthermore, high-throughput sequencing showed that the relative abundances of Pseudomonas and Desulfovibrio were significantly high among the acidogenic bacteria community, while Methanobacterium and Methanosaeta had very low abundances from among the methanogenic archaea community.
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Affiliation(s)
- Linxuan Che
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hui Xu
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
| | - Zhipeng Wei
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Ruihong Wei
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Bo Yang
- Textile Pollution Controlling Engineering Center of Ministry of Environmental Protection, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
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17
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Yan Y, Geng ZQ, Dai K, Guo X, Zeng RJ, Zhang F. Decoupling mechanism of Acid Orange 7 decolorization and sulfate reduction by a Caldanaerobacter dominated extreme-thermophilic consortium. JOURNAL OF HAZARDOUS MATERIALS 2021; 419:126498. [PMID: 34214849 DOI: 10.1016/j.jhazmat.2021.126498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 06/13/2023]
Abstract
The biological treatment of textile wastewater discharged from the dye baths and rinsing processes are challenged by both high temperatures of 50-80 °C and sulfate reduction. At present, most studies report azo dyes can be removed under mesophilic conditions, but the sulfate reduction is inevitable, consuming extra electron donors and producing undesirable sulfide. In this work, a Caldanaerobacter (> 97%) dominated extreme-thermophilic consortium (EX-AO7) was enriched using xylose as the substrate. The typical sulfate-reducing enzymes such as sulfite oxidase and sulfite reductase were not identified in enriched EX-AO7 by the metagenomic analysis. Then, the decolorization and sulfate reduction were expectedly decoupled by enriched EX-AO7 in extreme-thermophilic conditions, in which no sulfide was detected during the AO7 decolorization process. AO7 of 100 and 200 mg/L could be totally decolorized by EX-AO7. However, when 400 mg/L AO7 was added, the residual AO7 concentration was 22 ± 19 mg/L after 24 h, which was mainly due to the toxicity of AO7. Dosing zero-valent iron (ZVI) could also promote AO7 decolorization by 1.7 times since the addition of ZVI could provide a proliferative environment for EX-AO7 growth. Thereby, our work provides a new paradigm to promote the AZO dyes decolorization and minimize sulfate reduction.
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Affiliation(s)
- Yang Yan
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Zi-Qian Geng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Kun Dai
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Xuan Guo
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Raymond Jianxiong Zeng
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China
| | - Fang Zhang
- Center of Wastewater Resource Recovery, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China.
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18
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Zhou W, Chen X, Ismail M, Wei L, Hu B. Simulating the synergy of electron donors and different redox mediators on the anaerobic decolorization of azo dyes: Can AQDS-chitosan globules replace the traditional redox mediators? CHEMOSPHERE 2021; 275:130025. [PMID: 33677275 DOI: 10.1016/j.chemosphere.2021.130025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 01/25/2021] [Accepted: 02/13/2021] [Indexed: 06/12/2023]
Abstract
During anaerobic treatment of azo dye wastewater, the decolorization efficiency is low and dissolved redox mediators (RMs) added to the system are easy lost. In order to solve these issues, immobilized RMs have been a hot area of research. In this study a novel immobilized RM material, disodium anthraquinone-2,6-disulfonate (AQDS)-chitosan globules, which is natural, highly efficient and environmentally friendly, was prepared. Compared with natural immobilized RMs (activated carbon) and dissolved RMs (AQDS), it can be considered that it has a significant strengthening effect on the anaerobic biological degradation and decolorization of azo dye wastewater. An electron donor (ED, glucose) or RM (AQDS solution) was dosed into an anaerobic reactor to determine the enhancing effect and appropriate concentration for the decolorization treatment. The results indicate that a certain concentration of ED or RM [300 mg/L (1.667 mmol/L) glucose or 200 μmol/L AQDS solution] can improve effectively the anaerobic biological degradation and decolorization effect of azo dye wastewater. While by adding both 300 mg/L (1.667 mmol/L) glucose and 300 μmol/L AQDS (the concentrations were the initial reactive concentrations) together the decolorization efficiency was improved further. At the same time, the synergy of ED (glucose) and RM (AQDS solution) on the anaerobic decolorization of azo dye was simulated by the central combination design. A mathematical model for the decolorization efficiency has been established. According to this model, the hydraulic retention time of the best decolorization speed and efficiency has been obtained.
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Affiliation(s)
- Weizhu Zhou
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Xiaoguang Chen
- State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, Donghua University, Shanghai, 201620, China; School of Mechanical Engineering, Sichuan University of Science & Engineering, Sichuan Provincial Key Lab of Process Equipment and Control, Zigong, 643000, China.
| | - Muhammad Ismail
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Liang Wei
- College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Baolan Hu
- Key Laboratory of Water Pollution Control and Environmental Safety of Zhejiang Province, Hangzhou, 310058, China.
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19
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Chen Y, Duan X, Li J, Liu W, Ren S, Yang J, Liu Q. Hydrothermal synthesis of Ca doped β-In2S3 for effective dyes degradation. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.03.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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20
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Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures. Sci Rep 2021; 11:10640. [PMID: 34017049 PMCID: PMC8138017 DOI: 10.1038/s41598-021-90235-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 05/10/2021] [Indexed: 02/03/2023] Open
Abstract
Methyl orange (MO) is a common anionic azo dye that is harmful to the environment and biology, so it must be treated innocuously before it can be discharged. Adsorption is an effective method to remove anionic dyes. Nanotube mineral is a natural one-dimensional adsorption material, and its unique morphology and structure endow it with good adsorption capacity. Although there are many related studies, there is a lack of in-depth discussions on the influence of nanotube's composition and structure on the adsorption of dyes and other pollutants. In this paper, two kinds of natural one-dimensional silicate minerals [halloysite nanotubes (HNTs) and chrysotile nanotubes (ChNTs)] with similar morphology but slightly different compositions and crystal structures were used as adsorbents, and MO solution was used as simulate pollutants. It is the first time to discuss in depth the influence of the composition and structure of nanotube minerals on their charge properties and the adsorption performance of methyl orange dyes. It is found that HNTs and ChNTs have different adsorption capacity due to the difference of electronegativity between Al3+ and Mg2+ in the crystal, so they possess negative and positive charges respectively in near-neutral solution, which leads to the adsorption capacity of MO by ChNTs with positive charges which is greater than that of HNTs.
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21
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Zhang Z, Wang G, Li W, Zhang L, Guo B, Ding L, Li X. Photocatalytic Activity of Magnetic Nano-β-FeOOH/Fe 3O 4/Biochar Composites for the Enhanced Degradation of Methyl Orange Under Visible Light. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:526. [PMID: 33670815 PMCID: PMC7923089 DOI: 10.3390/nano11020526] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/14/2021] [Accepted: 02/16/2021] [Indexed: 01/22/2023]
Abstract
A novel nano-β-FeOOH/Fe3O4/biochar composite with enhanced photocatalytic performance and superparamagnetism was successfully fabricated via an environmentally friendly one-step method. The structural properties of the prepared composite were characterized by scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, X-ray photoelectron spectroscopy, and a vibrating sample magnetometer. The XPS spectrum of the as-prepared composites confirmed the presence of Fe-O-C bonds between β-FeOOH and biochar, which could be conducive to transfer photo-generated electrons. UV-vis spectroscopy confirmed the existence of an electron-hole connection between β-FeOOH and biochar, which promoted the rapid interface transfer of photogenerated electrons from β-FeOOH to biochar. These novel structures could enhance the response of biochar to accelerate the photoelectrons under visible light for more free radicals. Electron spin resonance analysis and free radical quenching experiments showed that •OH was the primary active species in the photodegradation process of methyl orange by nano-β-FeOOH/Fe3O4/biochar. In the synergistic photocatalytic system, β-FeOOH/Fe3O4/biochar exhibited excellent catalytic activity for the degradation of azo dye (methyl orange), which is 2.03 times higher than that of the original biochar, while the surface area decreased from 1424.82 to 790.66 m2·g-1. Furthermore, β-FeOOH/Fe3O4/biochar maintained a stable structure and at least 98% catalytic activity after reuse, and it was easy to separate due to its superparamagnetism. This work highlights the enhanced photocatalytic performance of β-FeOOH/Fe3O4/biochar material, which can be used in azo dye wastewater treatment.
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Affiliation(s)
- Zheng Zhang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
- Research Center for Green and Intelligent Coal Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Guanghua Wang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
- Research Center for Green and Intelligent Coal Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Wenbing Li
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
- Research Center for Green and Intelligent Coal Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Lidong Zhang
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
- Research Center for Green and Intelligent Coal Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
| | - Benwei Guo
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
| | - Ling Ding
- School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (Z.Z.); (G.W.); (L.Z.); (B.G.); (L.D.)
| | - Xiangcheng Li
- The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China
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Ali SS, Al-Tohamy R, Koutra E, El-Naggar AH, Kornaros M, Sun J. Valorizing lignin-like dyes and textile dyeing wastewater by a newly constructed lipid-producing and lignin modifying oleaginous yeast consortium valued for biodiesel and bioremediation. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123575. [PMID: 32791477 DOI: 10.1016/j.jhazmat.2020.123575] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/24/2020] [Accepted: 07/22/2020] [Indexed: 05/07/2023]
Abstract
Construction of a multipurpose yeast consortium suitable for lipid production, textile dye/effluent removal and lignin valorization is critical for both biorefinery and bioremediation. Therefore, a novel oleaginous consortium, designated as OYC-Y.BC.SH has been developed using three yeast cultures viz. Yarrowia sp. SSA1642, Barnettozyma californica SSA1518 and Sterigmatomyces halophilus SSA1511. The OYC-Y.BC.SH was able to grow on different carbon sources and accumulate lipids, with its highest lipid productivity (1.56 g/L/day) and lipase activity (170.3 U/mL) exhibited in xylose. The total saturated fatty acid content was 36.09 %, while the mono-unsaturated and poly-unsaturated fatty acids were 45.44 and 18.30 %, respectively, making OYC-Y.BC.SH valuable for biodiesel production. The OYC-Y.BC.SH showed its highest decolorization efficiency of Red HE3B dye (above 82 %) in presence of sorghum husk as agricultural co-substrate, suggesting its feasibility for simultaneous lignin valorization. The significant higher performance of OYC-Y.BC.SH on decolorizing the real dyeing effluent sample at pH 8.0 suggests its potential and suitability for degrading most of the wastewater textile effluents. Clearly, toxicological studies underline the additional advantage of using OYC-Y.BC.SH for bioremediation of industrial dyeing effluents in terms of decolorization and detoxification. A possible mechanism of Red HE3B biodegradation and ATP synthesis was also proposed.
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Affiliation(s)
- Sameh Samir Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
| | - Rania Al-Tohamy
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Eleni Koutra
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504, Patras, Greece
| | - Amal H El-Naggar
- Botany Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Michael Kornaros
- Laboratory of Biochemical Engineering & Environmental Technology (LBEET), Department of Chemical Engineering, University of Patras, 1 Karatheodori Str., University Campus, 26504, Patras, Greece; INVALOR: Research Infrastructure for Waste Valorization and Sustainable Management, University Campus, 26504, Patras, Greece
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China.
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Long-Term Exposure to Azo Dyes from Textile Wastewater Causes the Abundance of Saccharibacteria Population. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11010379] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Discharge of untreated wastewater is one of the major problems in various countries. The use of azo dyes in textile industries are one of the key xenobiotic compounds which effect both soil and water ecosystems and result in drastic effect on the microbial communities. Orathupalayam dam, which is constructed over Noyyal river in Tamil Nadu, India has become a sink of wastewater from the nearby textile industries. The present study had aimed to characterize the bacterial diversity and community profiles of soil collected from the vicinity of the dam (DS) and allied agricultural field (ALS) nearby the catchment area. The soil dehydrogenase and cellulase activities were significantly lower in DS compared to ALS. Additionally, the long-term exposure to azo dye compounds resulted in higher relative abundance of Saccharibacteria (36.4%) which are important for degradation of azo dyes. On the other hand, the relative abundance of Proteobacteria (25.4%) were higher in ALS. Interestingly, the abundance of Saccharibacteria (15.2%) were also prominent in ALS suggesting that the azo compounds might have deposited in the agricultural field through irrigation. Hence, this study revealed the potential bacterial phyla which can be key drivers for designing viable technologies for degradation of xenobiotic dyes.
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Developing a population-state decision system for intelligently reprogramming extracellular electron transfer in Shewanella oneidensis. Proc Natl Acad Sci U S A 2020; 117:23001-23010. [PMID: 32855303 PMCID: PMC7502708 DOI: 10.1073/pnas.2006534117] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The unique extracellular electron transfer (EET) ability has positioned electroactive bacteria (EAB) as a major class of cellular chassis for genetic engineering aimed at favorable environmental, energy, and geoscience applications. However, previous efforts to genetically enhance EET ability have often impaired the basal metabolism and cellular growth due to the competition for the limited cellular resource. Here, we design a quorum sensing-based population-state decision (PSD) system for intelligently reprogramming the EET regulation system, which allows the rebalanced allocation of the cellular resource upon the bacterial growth state. We demonstrate that the electron output from Shewanella oneidensis MR-1 could be greatly enhanced by the PSD system via shifting the dominant metabolic flux from initial bacterial growth to subsequent EET enhancement (i.e., after reaching a certain population-state threshold). The strain engineered with this system achieved up to 4.8-fold EET enhancement and exhibited a substantially improved pollutant reduction ability, increasing the reduction efficiencies of methyl orange and hexavalent chromium by 18.8- and 5.5-fold, respectively. Moreover, the PSD system outcompeted the constant expression system in managing EET enhancement, resulting in considerably enhanced electron output and pollutant bioreduction capability. The PSD system provides a powerful tool for intelligently managing extracellular electron transfer and may inspire the development of new-generation smart bioelectrical devices for various applications.
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