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Hu T, Chen Z, Xu Y, Liu L. Enhancement of aluminum doping on removal of norfloxacin by iron-loaded biochar: efficacy and mechanism. ENVIRONMENTAL RESEARCH 2025; 279:121723. [PMID: 40320032 DOI: 10.1016/j.envres.2025.121723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2024] [Revised: 04/23/2025] [Accepted: 04/27/2025] [Indexed: 05/07/2025]
Abstract
The capacity of aluminum/iron-loaded biochar (AFBC) and iron-loaded biochar (FBC) for removal of norfloxacin (NOR) was investigated by batch experiments, while enhancement efficacy and mechanism was explored by kinetic, isothermal, and thermodynamic analyses, as well as by characterization of the AFBCs and FBCs and solution properties. As the initial pH was raised from 2 to 12, the NOR removal capability of AFBC varied within a narrow range (123.6∼124.4 mg g-1), which was 2.06 to 2.53 times that of FBC. The better description of the pseudo-second-order kinetic model, liquid film diffusion model, and Langmuir model indicated that NOR removal was dominated by surface monolayer chemisorption, and its rate-controlling step was mainly liquid film diffusion. Liquid film diffusion rates of AFBC and FBC were 7.01 × 10-2 and 1.75 × 10-2 min-1, whereas their maximum q-values were 205.8/72.77 (298 K), 222.9/84.42 (308 K), and 235.3/95.25 mg g-1 (318 K), respectively. NOR removal was spontaneous and endothermic, while more negative Gibbs energy change and lower enthalpy change of AFBC suggested that it was more beneficial for NOR removal. Adsorption and degradation of AFBC and FBC contributed 53.07%/46.93% and 61.76%/38.24% to NOR removal (298 K). The amounts of adsorption sites and free radicals (1O2, ·OH and ·SO4) derived from AFBC were 2.43 and 3.47 times those of FBC, respectively. AFBC and FBC had three similar pathways for degrading NOR, while AFBC significantly enhanced the contributions of ·OH and ·SO4. Furthermore, AFBC and FBC could be effectively desorbed and regenerated by ultrapure water and NaOH. In conclusion, the enhancement of NOR removal by aluminum doping on iron-loaded biochar was attributed to the elevation of affinity and the provision of more adsorption sites and free radicals.
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Affiliation(s)
- Tianyou Hu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
| | - Zhili Chen
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, China; Modern Industry College of Ecology and Environmental Protection, Guilin University of Technology, Guilin 541006, China
| | - Yufeng Xu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, China; Modern Industry College of Ecology and Environmental Protection, Guilin University of Technology, Guilin 541006, China.
| | - Liheng Liu
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China; Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541006, China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin 541006, China; Modern Industry College of Ecology and Environmental Protection, Guilin University of Technology, Guilin 541006, China.
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Li X, Li L, Zhang Z, Ma Y, Smith RL, Guo H, Zhao R, Liu Y, Yang F, Ding Y. Insights into the mechanism of mechanically treated Fe/Mn-N doped seed meal hydrochar for efficient adsorption and degradation of tetracycline. BIOCHAR 2025; 7:48. [DOI: 10.1007/s42773-025-00435-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2024] [Revised: 12/24/2024] [Accepted: 01/12/2025] [Indexed: 04/11/2025]
Abstract
Abstract
Tetracycline (TC), which is widely employed in agriculture, constitutes a serious source of environmental pollution. In this study, mechanical ball-milling (B) treated iron/manganese-nitrogen (Fe/Mn-N) doped hydrochars (Fe/Mn-BNHT) synthesized using saponin-containing seed meal (T) as a carbon source, showed excellent removal ability of tetracycline with a removal efficiency 95%. The Fe/Mn-BNHT showed superior performance in batch experiments with solution pH (3–9), coexisting ions, and after 5 cycles of application. Further analysis showed that Fe/Mn-BNHT mediated the degradation of adsorbed tetracycline with a degradation efficiency 87%. Surface complexation, electrostatic interactions, and hydrogen bonding facilitated the adsorption of tetracycline. ·OH induced by oxygen vacancy (OV) was identified as the main reactive oxidation species in tetracycline degradation. Fe(III)- tetracycline complexes gained electrons through graphitic N, leading to tetracycline degradation and Fe(III) reduction. The degradation pathways for tetracycline are shown through density functional theory calculation and intermediate identification, and the ecological toxicity risk of 10 degradation intermediates is evaluated. This research provides a new perspective on the development of environmentally friendly materials that can simultaneously adsorb and degrade pollutants.
Graphical Abstract
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Cui T, Chen D, Duan R, Yang F, Li D, Tian L, Zhang Y, Wang H, Xu R. Taloring sawdust derived hydrochar via red mud for cadmium removal: Electron transfer insight and recyclability assessment. CHEMOSPHERE 2025; 370:143924. [PMID: 39653192 DOI: 10.1016/j.chemosphere.2024.143924] [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: 07/17/2024] [Revised: 11/29/2024] [Accepted: 12/06/2024] [Indexed: 12/16/2024]
Abstract
Iron modified bio-adsorbents gained a lot of attention recently, especially some iron-contain wastes were employed for fabrication. However, the influence of indigenous impurities in wastes was merely investigated. In this study, red mud (RM), an iron-rich by-product was employed as source to prepare Fe modified hydrochar (RM@HC) by a facile hydrothermal method, and then employed for Cd(II) removal from wastewater. The RM@HC demonstrated excellent adsorption performance with capacity of 598.26 mg/g and maintained with a wide pH range. Further, the removal mechanisms were comprehensively elucidated and calculated, which was attributed to the various interactions include physical adsorption (29.07%), reduction (27.61%), and co-precipitation (25.81%). Moreover, the abundant metal oxides in RM@HC contributed to the removal through co-precipitation by building a highly alkaline environment. This work provided a promising choice for the sustainable reutilization of RM by designing a green bio-adsorbent to remove heavy metals from wastewater.
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Affiliation(s)
- Ting Cui
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Dingxiang Chen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Ran Duan
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Fan Yang
- Yunnan Provincial Academy of Science and Technology, Kunming 650500, PR China
| | - Danting Li
- Kunming Engineering Corporation Limited, Kunming 650500, PR China
| | - Lin Tian
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Yong Zhang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China.
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China.
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Hu S, Lu H, Xie W, Cao S, Shi J, Guo Y, Zhu X, Xu Z, Gao H. Oxidative degradation of sulfamethazine by manganese oxide supported biochar activated periodate: Effect and mechanism. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2025; 289:117700. [PMID: 39793289 DOI: 10.1016/j.ecoenv.2025.117700] [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: 11/06/2024] [Revised: 12/26/2024] [Accepted: 01/05/2025] [Indexed: 01/13/2025]
Abstract
In this study, manganese oxide supported biochar (MBC) was used as a catalyst of periodate (PI) for the oxidative degradation of sulfonamide antibiotic sulfamethazine (SMZ). The degradation rate of 10 mg/L SMZ reached 99 % in 60 min in the MBC/PI system, and the optimal condition was pH 3.5, 0.12 g/L of MBC, and 0.17 mM of PI. Combined with quenching experiment and electron paramagnetic resonance (EPR) characterization, it was determined that the reactive oxygen species (ROS) participating in the reaction include iodate radical (IO3∙), singlet oxygen (1O2), and hydroxyl radical (∙OH). ROS, Mn(III) and electron transfer are three crucial SMZ removal mechanisms in MBC activated PI system, and the conversion process of reactive species was deduced. The manganese redox cycles, oxygen-containing functional groups on MBC surface, and BC-O-Mn(II) complex participated in reactive species production. The loading of manganese oxide increases the number of oxygen-containing functional group on the surface of BC, and BC-O-Mn(II) complex formation resulted in the higher catalytic activity compared with BC. Ten SMZ oxidative products and four transformation pathways was identified. This study provided an efficient and practical method to remove sulfonamide antibiotics and revealed its theoretical mechanism.
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Affiliation(s)
- Shuheng Hu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Hao Lu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China
| | - Wenyi Xie
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China
| | - Shaohua Cao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China
| | - Jiaqi Shi
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China.
| | - Yang Guo
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China
| | - Xin Zhu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China
| | - Zimu Xu
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Han Gao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment of China, Nanjing, Jiangsu, 210042, China.
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Li M, Wang S, Liu D, Losic D, Zhao N, Tian Q, Shen Y, Yu R, Liu H, Ma Q, Yuan P. Green synthesis of diatom-allophane bio-nanocomposites for highly efficient oxytetracycline adsorption. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 951:175641. [PMID: 39168336 DOI: 10.1016/j.scitotenv.2024.175641] [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: 04/06/2024] [Revised: 06/16/2024] [Accepted: 08/17/2024] [Indexed: 08/23/2024]
Abstract
The extensive use of the antibiotic oxytetracycline (OTC) has led to considerable environmental contamination and other negative impacts, prompting an urgent need for a green, effective, and innovative OTC adsorption material. In this study, diatom-allophane bio-nanocomposites were synthesized using a simple and eco-friendly method, yielding a homogeneous coating of allophane nanoparticles on diatom surfaces. The resultant bio-nanocomposites were found to have hierarchically porous structures and abundant active sites derived from successful allophane loading and dispersion on diatom surfaces. The OTC adsorption capacity of this novel adsorbent is remarkable (219.112 mg·g-1), surpassing the capacities of raw allophane and diatoms by >5 and 10 times, respectively. Mechanistically, OTC adsorption by the bio-nanocomposites was found to be driven primarily by chemisorption through a process involving complexation between the amide and amino groups on OTC and the aluminum hydroxyl and carboxyl groups on the adsorbent surface. Electrostatic interactions and hydrogen bonding also contribute significantly to OTC capture. Furthermore, the diatom-allophane bio-nanocomposites exhibit excellent performance over a wide pH range (4-7), in the presence of various cations (Na+, K+, Ca2+, Mg2+) and anions (Cl-, NO3-, SO42-), and in real water bodies. These findings demonstrate the potential of the diatom-allophane bio-nanocomposite as a green, efficient, and promising biological-mineral adsorbent for environmental remediation, leveraging the combined utilization of biological and mineral resources.
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Affiliation(s)
- Mengyuan Li
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China; School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Shun Wang
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lakes, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
| | - Dong Liu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; State Key Laboratory of Marine Environmental Science (MEL), Xiamen University, Xiamen 361012, China.
| | - Dusan Losic
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Ning Zhao
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Tian
- Key Laboratory of Agro-Ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Science, Changsha 410125, China
| | - Yuguo Shen
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Rongda Yu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hao Liu
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiyi Ma
- CAS Key Laboratory of Mineralogy and Metallogeny, Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng Yuan
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
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Chen J, Zhou J, Zheng W, Leng S, Ai Z, Zhang W, Yang Z, Yang J, Xu Z, Cao J, Zhang M, Leng L, Li H. A complete review on the oxygen-containing functional groups of biochar: Formation mechanisms, detection methods, engineering, and applications. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174081. [PMID: 38908575 DOI: 10.1016/j.scitotenv.2024.174081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 06/01/2024] [Accepted: 06/15/2024] [Indexed: 06/24/2024]
Abstract
Biochar is a porous carbon material generated by the thermal treatment of biomass under anaerobic or anoxic conditions with wealthy Oxygen-containing functional groups (OCFGs). To date, OCFGs of biochar have been extensively studied for their significant utility in pollutant removal, catalysis, capacitive applications, etc. This review adopted a whole system philosophy and systematically summarizes up-to-date knowledge of formation, detection methods, engineering, and application for OCFGs. The formation mechanisms and detection methods of OCFGs, as well as the relationships between OCFGs and pyrolysis conditions (such as feedstocks, temperature, atmosphere, and heating rate), were discussed in detail. The review also summarized strategies and mechanisms for the oxidation of biochar to afford OCFGs, with the performances and mechanisms of OCFGs in the various application fields (environmental remediation, catalytic biorefinery, and electrode material) being highlighted. In the end, the future research direction of biochar OCFGs was put forward.
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Affiliation(s)
- Jiefeng Chen
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Junhui Zhou
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Wei Zheng
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Songqi Leng
- Department of Chemical and Biochemical Engineering, Western University, London, ON N6A 5B9, Canada
| | - Zejian Ai
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Weijin Zhang
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Zequn Yang
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Jianping Yang
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Zhengyong Xu
- Hunan Modern Environmental Technology Co., LTD., 410000, China
| | - Jianbing Cao
- Research Department of Hunan Eco-environmental Affairs Center, Changsha 410000, China
| | - Mingguang Zhang
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China
| | - Lijian Leng
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China; Xiangjiang Laboratory, Changsha 410205, China.
| | - Hailong Li
- School of Energy Science and Engineering, Central South University, Changsha, Hunan 410083, China.
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Cui S, Lv J, Hough R, Fu Q, Zhang Z, Dong X, Fan X, Li YF. Imidacloprid removal by modified graphitic biochar with Fe/Zn bimetallic oxides. ENVIRONMENTAL RESEARCH 2024; 258:119444. [PMID: 38914251 DOI: 10.1016/j.envres.2024.119444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/01/2024] [Accepted: 06/18/2024] [Indexed: 06/26/2024]
Abstract
Coping with the critical challenge of imidacloprid (IMI) contamination in sewage treatment and farmland drainage purification, this study presents a pioneering development of an advanced modified graphitic white melon seed shells biochar (Fe/Zn@WBC). The Fe/Zn@WBC demonstrates a substantial enhancement in adsorption efficiency for IMI, achieving a remarkable removal rate of 87.69% within 30 min and a significantly higher initial adsorption rate parameter h = 4.176 mg g-1·min-1. This significant improvement outperforms WBC (12.22%, h = 0.115 mg g-1·min-1) and highlights the influence of optimized adsorption conditions at 900 °C and the graphitization degree resulting from Fe/Zn bimetallic oxide modification. Characterization analysis and batch sorption experiments including kinetics, isotherms, thermodynamics and pH factors illustrate that chemical adsorption is the main type of adsorption mechanism responsible for this superior ability to remove IMI through pore filling, hydrogen bonding, hydrophobic interaction, electrostatics interaction, π-π interactions as well as complexation processes. Furthermore, we demonstrate exceptional stability of Fe/Zn@WBC across a broad pH range (pH = 3-11), co-existing ions presence along with humic acid under various real water conditions while maintaining high removal efficiency. This study presents an advanced biochar adsorbent, Fe/Zn@WBC, with efficient adsorption capacity and easy preparation. Through three regeneration cycles via pyrolysis method, it demonstrates excellent pyrolysis regeneration capabilities with an average removal efficiency of 92.02%. The magnetic properties enable rapid separation facilitated by magnetic analysis. By elucidating the efficacy and mechanistic foundations of Fe/Zn@WBC, this research significantly contributes to the field of environmental remediation by providing a scalable solution for IMI removal and enhancing scientific understanding of bimetallic oxides-hydrophilic organic pollutant interactions.
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Affiliation(s)
- Song Cui
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China.
| | - Jialin Lv
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Rupert Hough
- The James Hutton Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK
| | - Qiang Fu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Zulin Zhang
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; The James Hutton Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK
| | - Xiaolong Dong
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Xiaohu Fan
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Yi-Fan Li
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China; Research Center for Eco-Environment Protection of Songhua River Basin, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
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Saravanan A, Karishma S, Kumar PS, Thamarai P, Yaashikaa PR. Recent insights into mechanism of modified bio-adsorbents for the remediation of environmental pollutants. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 339:122720. [PMID: 37839681 DOI: 10.1016/j.envpol.2023.122720] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 10/01/2023] [Accepted: 10/08/2023] [Indexed: 10/17/2023]
Abstract
Rapid industrialization has exacerbated the hazard to health and the environment. Wide spectrums of contaminants pose numerous risks, necessitating their disposal and treatment. There is a need for further remediation methods since pollutant residues cannot be entirely eradicated by traditional treatment techniques. Bio-adsorbents are gaining popularity due to their eco-friendly approach, broad applicability, and improved functional and surface characteristics. Adsorbents that have been modified have improved qualities that aid in their adsorptive nature. Adsorption, ion exchange, chelation, surface precipitation, microbial uptake, physical entrapment, biodegradation, redox reactions, and electrostatic interactions are some of the processes that participate in the removal mechanism of biosorbents. These processes can vary depending on the particular biosorbent and the type of pollutants being targeted. The systematic review focuses on the many modification approaches used to remove environmental contaminants. Different modification or activation strategies can be used depending on the type of bio-adsorbent and pollutant to be remediated. Physical activation procedures such as ultrasonication and pyrolysis are more commonly used to modify bio-adsorbents. Ultrasonication process improves the adsorption efficiency by 15-25%. Acid and alkali modified procedures are the most effective chemical activation strategies for adsorbent modification for pollution removal. Chemical modification increases the removal to around 95-99%. The biological technique involving microbial culture is an emerging field that needs to be investigated further for pollutant removal. A short evaluation of modified adsorbents with multi-pollutant adsorption capability that have been better eliminated throughout the adsorption process has been provided.
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Affiliation(s)
- A Saravanan
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - S Karishma
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - P Senthil Kumar
- Centre for Pollution Control and Environmental Engineering, School of Engineering and Technology, Pondicherry University, Kalapet, Puducherry, 605014, India.
| | - P Thamarai
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
| | - P R Yaashikaa
- Department of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602105, India
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Kang K, Hu Y, Khan I, He S, Fetahi P. Recent advances in the synthesis and application of magnetic biochar for wastewater treatment. BIORESOURCE TECHNOLOGY 2023; 390:129786. [PMID: 37758029 DOI: 10.1016/j.biortech.2023.129786] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/23/2023] [Accepted: 09/12/2023] [Indexed: 10/03/2023]
Abstract
Magnetic biochar (MBC) is a novel bio-carbon material with both desired properties as adsorbent and magnetic characteristics. This review provides an up-to-date summary and discussion on the latest development of MBC, which covers the progress on its synthesis, application, and techno-economic analysis. The review indicates that the direct hydrothermal synthesis has been catching more research attention to produce MBC due to its mild reaction conditions. Instead of the Fe-loaded MBC, there is a trend of using Mn for the magnetization. For the MBC application, how to improve its adsorption performance for water decontamination, ideally to match that of the biochar (BC) or activated carbon, is important. In addition, more studies on the environmental impacts of MBC and life-cycle assessment decoding the process optimization options are necessary. This review will provide valuable references for the development of MBC and MBC-based materials for wastewater treatment.
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Affiliation(s)
- Kang Kang
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada
| | - Yulin Hu
- Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown PE C1A 4P3, Prince Edward Island, Canada
| | - Iltaf Khan
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada
| | - Sophie He
- Department of Engineering, Dalhousie University, Truro, NS B2N 5E3, Canada
| | - Pedram Fetahi
- Biorefining Research Institute (BRI) and Chemical Engineering Department, Lakehead University, Thunder Bay, Ontario, P7B 5E1, 955 Oliver Road, Canada.
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Wang H, Chen D, Cui T, Duan R, Yan X, Zhang Y, Xu R. Efficient and effective immobilization of tetracycline and copper from wastewater by zero-valent iron fabricated hydrochar derived from walnut peel. BIORESOURCE TECHNOLOGY 2023; 387:129557. [PMID: 37499925 DOI: 10.1016/j.biortech.2023.129557] [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: 06/27/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 07/29/2023]
Abstract
Antibiotics and heavy metals often coexist as non-point-source contaminants in wastewater and their quite contrary physiochemical properties make their co-removal processes challenging. In this work, a bifunctional zero-valent iron-modified hydrochar derived from walnut peel (MWPHC) was synthesized, which was then applied for the simultaneous removal of tetracycline (TC) and Cu(II) from wastewater. Based on the characterizations, Fe0 species were successfully distributed on the surface of the walnut peel substrates. The TC and Cu(II) could be synergistically immobilized, and bridging effects were observed between them, and MWPHC exhibited excellent ability on the simultaneous removal of TC (qmax = 433.59 mg/g) and Cu(II) (qmax = 586.25 mg/g). Furthermore, the engineering feasibility of the MWPHC was evaluated using column and regeneration experiments. These results shed light on the tailored MWPHC as an environmental functional material for pollution control of co-existing antibiotic and heavy metal contaminants in agro-industrial wastewater.
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Affiliation(s)
- Huabin Wang
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Dingxiang Chen
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Ting Cui
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Ran Duan
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Xianghong Yan
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Yong Zhang
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China
| | - Rui Xu
- School of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, PR China; Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, PR China.
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11
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Pei T, Shi F, Hou D, Yang F, Lu Y, Liu C, Lin X, Lu Y, Zheng Z, Zheng Y. Enhanced adsorption of phenol from aqueous solution by KOH combined Fe-Zn bimetallic oxide co-pyrolysis biochar: Fabrication, performance, and mechanism. BIORESOURCE TECHNOLOGY 2023; 388:129746. [PMID: 37689119 DOI: 10.1016/j.biortech.2023.129746] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/14/2023] [Accepted: 09/06/2023] [Indexed: 09/11/2023]
Abstract
In this study, impregnation combined with KOH activation with different mixing methods was used to prepare magnetic biochar. The effects of synthetic method on biochar physicochemical properties and adsorption performance were explored. The results showed that treatment of a Fe-Zn oxide with KOH activation provided excellent adsorption properties with adsorption capacity of 458.90 mg/g due to well-developed microporous structure and rich-in O-containing functional groups as well as exposed oxidizing functional groups (Fe2O3 and FeOOH). Langmuir-Freundlich and pseudo-second-order models accurately fit phenol adsorption. Neutral conditions (pH = 6) and lower ionic strengths were beneficial to phenol removal. Additionally, the predominant adsorption processes were physisorption and chemisorption. Correlation analyses and characterization data confirmed that pore filling, π-π interactions and surface complexation were the dominant driving forces for phenol adsorption. This research provides an environmentally friendly method for utilizing agricultural wastes for the removal of a variety of pollutions from aquatic environment.
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Affiliation(s)
- Tao Pei
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Feng Shi
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Fulin Yang
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Yi Lu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Yanling Lu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China
| | - Zhifeng Zheng
- Xiamen Key Laboratory for High-valued Conversion Technology of Agricultural Biomass (Xiamen University), Fujian Provincial Engineering and Research Center of Clean and High-valued Technologies for Biomass, College of Energy, Xiamen University, Xiamen 361102, PR China
| | - Yunwu Zheng
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forest Biomass Resources, Southwest Forestry University, College of Materials & Chemical Engineering, Southwest Forestry University, Kunming 650224, PR China.
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12
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Wang K, Yao R, Zhang D, Peng N, Zhao P, Zhong Y, Zhou H, Huang J, Liu C. Tetracycline Adsorption Performance and Mechanism Using Calcium Hydroxide-Modified Biochars. TOXICS 2023; 11:841. [PMID: 37888692 PMCID: PMC10611203 DOI: 10.3390/toxics11100841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/21/2023] [Accepted: 09/28/2023] [Indexed: 10/28/2023]
Abstract
Tetracycline is frequently found in various environments and poses significant ecological risks. Calcium hydroxide-modified biochar has shown potential as a material for removing multiple classes of pollutants from wastewater streams. The tetracycline-adsorption performance and mechanism of alkali-modified biochars derived from nine wastes (corn straw, rice straw, swine manure, cypress powder, wheat straw, peanut shell, walnut shell powder, soybean straw, and corncobs) were investigated in the study. Among the four alkalis tested, calcium hydroxide exhibited the most effective modification effects at a pyrolysis temperature of 500 °C. Straw biomass was most suitable to be modified by calcium hydroxide, and calcium hydroxide-modified biochar showed the highest adsorption performance for tetracycline. The maximum adsorption capacities were 8.22 mg g-1 for pristine corn straw biochar and 93.46 mg g-1 for calcium hydroxide-modified corn straw biochar. The tetracycline adsorption mechanism by calcium hydroxide-modified corn straw biochar involved hydrogen bonding, oxygen-containing functional groups, Ca2+ metal complexation, and electrostatic attraction. Consequently, calcium hydroxide-modified corn straw biochar emerges as an environment-friendly, cost-effective, and efficient tetracycline adsorbent.
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Affiliation(s)
- Kaifeng Wang
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Runlin Yao
- Bathurst Future Agri-Tech Institute, Qingdao Agricultural University, Qingdao 266109, China
| | - Dongqing Zhang
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Na Peng
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Ping Zhao
- Geological Party 105, Guizhou Provincial Bureau of Geology and Mineral Exploration and Development, Guiyang 550018, China
| | - Yongming Zhong
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Haijun Zhou
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Jiahui Huang
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
| | - Chen Liu
- Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Key Laboratory of Petrochemical Pollution Control of Guangdong Higher Education Institutes, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, China
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Pap S, Paunovic O, Prosen H, Kraševec I, Trebše P, Niemi L, Taggart MA, Turk Sekulic M. Removal of benzotriazole derivatives by biochar: Potential environmental applications. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122205. [PMID: 37454718 DOI: 10.1016/j.envpol.2023.122205] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 07/12/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
Benzotriazole and its derivatives (BTAs) are commonly present in wastewater due to their extensive use in industrial processes, yet their removal is still unexplored. Here, we test the removal of these pollutants using two functionalised biochars, synthesised from wild plum (WpOH) and apricot (AsPhA) kernels. The aim of this work was to optimise the adsorption process against various BTAs (i.e., benzotriazole (BTZ), 4-hydroxy-1H-benzotriazole (OHBZ), 4-methyl-1H-benzotriazole (4 MBZ), 5-methyl-1H-benzotriazole (5 MBZ), 5-chloro-1H-benzotriazole (ClBZ), 5,6-dimethyl-1H-benzotriazole (DMBZ)), and determine the adsorption mechanisms at play, using real wastewater matrices. Batch studies showed that the optimal adsorption pH ranged between 4 and 6 for WpOH and AsPhA, respectively, and equilibrium was reached after 240 min. The kinetic models that best described the adsorption process were in the following order: Elovich model > pseudo-second order model > pseudo-first order model. The equilibrium data showed the highest correlation with the Freundlich isotherm, indicating multilayer adsorption. The maximum adsorption capacity obtained in mixtures was 379 mg/g on WpOH and 526 mg/g on AsPhA. The mechanistic work revealed that the BTAs became bound to the biochar primarily through H-bonding, n-π and π-π EDA interactions. In wastewater, obtained before and after conventional treatment, the concentration of OHBZ and BTZ was reduced by >40%, while the concentration of the other compounds studied fell below the detection limit (∼2.0-90 ng/L). Finally, using a Vibrio fischeri assay, we showed that adsorption onto AsPhA significantly reduced the relative toxicity of both raw and treated wastewater.
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Affiliation(s)
- Sabolc Pap
- University of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, Trg Dositeja Obradovića 6, 21 000, Novi Sad, Serbia; Environmental Research Institute, UHI North Highland, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK.
| | - Olivera Paunovic
- University of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, Trg Dositeja Obradovića 6, 21 000, Novi Sad, Serbia
| | - Helena Prosen
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna Pot 113, 1000, Ljubljana, Slovenia
| | - Ida Kraševec
- University of Ljubljana, Faculty of Chemistry and Chemical Technology, Večna Pot 113, 1000, Ljubljana, Slovenia
| | - Polonca Trebše
- University of Ljubljana, Faculty of Health Sciences, Zdravstvena pot 5, 1000, Ljubljana, Slovenia
| | - Lydia Niemi
- Environmental Research Institute, UHI North Highland, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK
| | - Mark A Taggart
- Environmental Research Institute, UHI North Highland, University of the Highlands and Islands, Thurso, Caithness, Scotland, KW14 7JD, UK
| | - Maja Turk Sekulic
- University of Novi Sad, Faculty of Technical Sciences, Department of Environmental Engineering and Occupational Safety and Health, Trg Dositeja Obradovića 6, 21 000, Novi Sad, Serbia
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14
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Li A, Ye C, Jiang Y, Deng H. Enhanced removal performance of magnesium-modified biochar for cadmium in wastewaters: Role of active functional groups, processes, and mechanisms. BIORESOURCE TECHNOLOGY 2023; 386:129515. [PMID: 37468011 DOI: 10.1016/j.biortech.2023.129515] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 07/11/2023] [Accepted: 07/16/2023] [Indexed: 07/21/2023]
Abstract
In this study, a series of biochar products with different active functional groups were developed by one-pot coprecipitation method, including magnesium-modified biochar (MgBC) and functional group-grafted MgBC (Cys@MgBC, Try@MgBC, and Glu@MgBC), for effective adsorption of cadmium (Cd(II)) from wastewaters. These biochars exhibited excellent removal performance for Cd(II), particularly Cys@MgBC, whose maximum Cd(II) adsorption capacity reached 223.7 mg g-1. The highly active and weakly crystalline Mg could adsorb Cd(II) through precipitation and ion exchange, which was further promoted by the introduced functional groups through complexation and precipitation. After 120 d of natural process, the immobilization efficiency of Cd(II) by Cys@MgBC, Try@MgBC, and Glu@MgBC was still maintained at 98.7%, 95.2%, and 82.7% respectively. This study proposes and clarifies the complexation mechanism of functional group-grafted Mg-modified biochar for heavy metals, providing new insights into the practical application of these biochars.
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Affiliation(s)
- Anyu Li
- College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China; Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China; College of Environment and Resources, Guangxi Normal University, Guilin 541004, China
| | - Chenghui Ye
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China; College of Environment and Resources, Guangxi Normal University, Guilin 541004, China
| | - Yanhong Jiang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China; College of Environment and Resources, Guangxi Normal University, Guilin 541004, China
| | - Hua Deng
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Guangxi Normal University, Guilin 541004, China; College of Environment and Resources, Guangxi Normal University, Guilin 541004, China.
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15
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Musa N, Allam BK, Singh NB, Banerjee S. Investigation on water defluoridation via batch and continuous mode using Ce-Al bimetallic oxide: Adsorption dynamics, electrochemical and LCA analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 328:121639. [PMID: 37062400 DOI: 10.1016/j.envpol.2023.121639] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 04/09/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023]
Abstract
With variable atomic ratios, Ce-Al bimetallic oxides were fabricated using the sol-gel combustion method and utilized for efficient fluoride removal. The synthesized bimetallic oxides were extensively studied using advanced characterization techniques, including TGA, XRD, FTIR, BET surface area analysis, EDX-assisted FESEM, XPS and impedance analysis. These techniques facilitate the interpretation of the chemical and physical properties of the synthesized material. The Ce-Al (1:1) bimetallic oxide was selected as an adsorbent for the defluoridation. The Ce-Al (1:1) oxide demonstrates a moderately high surface area of 108.67 m2/g. The sorption behaviour of fluoride on Ce-Al (1:1) was thoroughly investigated using batch and column modes. The maximum fluoride removal efficiency (99.4%) was achieved at a temperature of 45 °C and pH of 7.0 using an adsorbent dose of 0.18 g/L for 35 min. Pseudo-second-order kinetic model appropriately describes the sorption process. Freundlich's adsorption isotherm was more pertinent in representing fluoride adsorption behaviour. The maximum fluoride adsorption capacity is 146.73 mg/g at 45 °C. Thermodynamics study indicates fluoride adsorption on Ce-Al (1:1) bimetallic oxide is spontaneous and feasible. The adsorption mechanism was interpreted through XPS spectra, indicating that the physisorption process is mainly responsible for fluoride adsorption. An in-depth investigation of the adsorption dynamics was carried out using mass transfer models and found that the external diffusion process limits the overall adsorption rate. An electrochemical investigation was performed to understand the effect of fluoride adsorption on the electrochemical behaviour of bimetallic oxide. The fixed-bed column adsorption study suggested that the lower flow rate and increased bed height favourably impacted the overall defluoridation process, and column adsorption results were suitably interpreted through both the Adam-Bohart model and Yoon-Nelson dynamics model. The sustainable aspect of the defluoridation process was elucidated in terms of carbon footprint measurement using life cycle assessment analysis. The carbon footprint of the entire treatment process was calculated as 0.094 tons/year.
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Affiliation(s)
- Neksumi Musa
- Department of Environmental Sciences, School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, India
| | - Bharat Kumar Allam
- Department of Chemistry, Faculty of Basic Sciences, Rajiv Gandhi University (A Central University), Rono Hills, Doimukh, Arunachal Pradesh, India
| | - Nakshatra Bahadur Singh
- Department of Chemistry and Biochemistry, School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, India; Research Development Cell, Sharda University, Greater Noida, Uttar Pradesh, India
| | - Sushmita Banerjee
- Department of Environmental Sciences, School of Basic Sciences and Research, Sharda University, Greater Noida, Uttar Pradesh, India.
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Song J, Lu L, Wang J, Li X, Li J, Wang Q, Du H, Xin S, Xu L, Yan Q, Zhou C, Liu G, Xin Y. Highly efficient nanocomposite of Y 2O 3@biochar for oxytetracycline removal from solution: Adsorption characteristics and mechanisms. BIORESOURCE TECHNOLOGY 2023:129380. [PMID: 37356503 DOI: 10.1016/j.biortech.2023.129380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/19/2023] [Accepted: 06/20/2023] [Indexed: 06/27/2023]
Abstract
Nano Y2O3-modified biochar composites (Y2O3@BC600) were fabricated successfully and exhibited great adsorption toward oxytetracycline (OTC). The Langmuir adsorption capacity of Y2O3@BC600-1:4 for OTC reached 223.46 mg/g, 10.52 times greater than that of BC600. The higher dispersion of Y2O3 nanoparticles, increased surface area of 175.65 m2/g and expanded porosity of 0.27 cm3/g accounted for higher OTC adsorption by Y2O3@BC600-1:4. Y2O3@BC600-1:4 could resist the interference of co-existing cations (Na+, K+, Mg2+, Ca2+) and anions (Cl-, NO3-, SO42-) on OTC removal. Y2O3 coating changed surface charge property of BC600, favoring the contribution of electrostatic interaction. Synchrotron radiation-based Fourier transform infrared spectroscopy detected obvious peak shift and intensity change of surface -OH when OTC adsorption occurred. Accordingly, stronger H-bonding (charge-assisted hydrogen bond, OTC-H2N+···HO-Y2O3@BC600-1:4) was proposed for OTC adsorption. Y2O3@BC600 exhibited renewability and stability in the adsorptive removal of OTC. Therefore, Y2O3@BC600 may be a novel and suitable adsorbent for antibiotic removal.
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Affiliation(s)
- Jiaying Song
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, 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
| | - Jian Wang
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Xue Li
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Jinying Li
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Qianwen Wang
- Instrumental Analysis Center of Qingdao Agricultural University, Qingdao 266109, China
| | - Haiyan Du
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Shuaishuai Xin
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Lina Xu
- College of Landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao 266109, China
| | - Qinghua Yan
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Chengzhi Zhou
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Guocheng Liu
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China.
| | - Yanjun Xin
- Qingdao Engineering Research Center for Rural Environment, College of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
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Chen B, Yu F, Wang S, Liu Y, Li D, Chen Y, Dao G, Xu Z, Pan X. Structuring alginate/dopamine powder into macroscopic aerogel microsphere for exceptional removal of tetracycline from water: Performance and mechanisms. Int J Biol Macromol 2023:124994. [PMID: 37236556 DOI: 10.1016/j.ijbiomac.2023.124994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/26/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Abstract
Aerogel was selected as one of IUPAC Top Ten Emerging Technologies in Chemistry in 2022, and has attracted tremendous concerns of scientists in removal of emerging contaminants. In this work a novel Fe3+ cross-linked alginate aerogel (SA/DA-Fe3+) with multiple sorption sites were facilely fabricated and applied for highly efficient removal of tetracycline (TC) from water. Results showed that Fe3+ and DA cooperatively improve adsorption of TC and TC was efficiently removed over a broad pH range of 4-8. The kinetics process can be better described by a chemisorption controlled pseudo-second-order kinetics model and Langmuir isotherm equation with characteristics of monolayer coverage. The fitted qmax value of TC at ambient temperature was 804.6 mg g-1 higher than those of other reported adsorbents. Multiple interactions including π-π EDA, complexation, hydrogen bonding, electrostatic attraction, etc. were involved in adsorption process. Moreover, SA/DA-Fe3+ aerogel exhibited satisfactory stability, reusability, and recyclability for consecutive applications. Most importantly, after consecutively running for >1000 h with dynamic sorption capacity over 500 mg g-1, the packed-column was still not saturated, manifesting its great potentials for treating actual wastewaters. Thus, above superiorities make SA/DA-Fe3+ a promising candidate adsorbent for treating TC-containing wastewater.
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Affiliation(s)
- Bo Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Fengling Yu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Sha Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yang Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Dehong Li
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Yuning Chen
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Guohua Dao
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Zhixiang Xu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China.
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