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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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2
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Liu J, Huang X, Yi Z. Complexing agent-assisted Cr(VI) removal in a continuous fixed-bed system with nanoscale Fe 0/NaA molecular sieve membrane supported on nickel foam. CHEMOSPHERE 2024; 364:143003. [PMID: 39097113 DOI: 10.1016/j.chemosphere.2024.143003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 07/27/2024] [Accepted: 07/31/2024] [Indexed: 08/05/2024]
Abstract
Complexing agents (CAs) can be used for the removal of Cr(VI) via nanoscale Fe0 (nZVI) reduction in cost-effective manner. However, nZVI is prone to aggregation and passivation, and some conventional CAs are toxic and difficult to biodegrade, potentially causing secondary pollution. Therefore, selecting an environmentally friendly CA for assisting in the removal of Cr(VI) via supported nZVI is imperative. Herein, NaA molecular sieve membrane-supported nZVI (nZVI/NaA-NF) was prepared via the secondary growth and liquid-phase reduction method using nickel foam (NF) as the carrier. The physicochemical characteristics of nZVI/NaA-NF before and after reaction were analysed via SEM, EDS, and XPS. A CA-improved nZVI/NaA-NF was used for the effective removal of Cr(VI) in a continuous fixed-bed system. Furthermore, the influences of various experimental factors including the CA type, CA concentration, solution pH, space velocity, and inlet Cr(VI) concentration on Cr(VI) removal were systematically investigated. The results demonstrated that nZVI particles were homogeneously immobilized on the NaA molecular sieve membrane/NF for fresh nZVI/NaA-NF, and tetrasodium iminidisuccinate (IDS-4Na) inhibited the aggregation of Cr(III)/Fe(III) (hydr)oxide precipitates during the reaction. IDS-4Na demonstrated excellent promotive effect on Cr(VI) removal via nZVI/NaA-NF. The breakthrough time for Cr(VI) in the addition of IDS-4Na was considerably longer than that of nZVI/NaA-NF alone. The breakthrough concentration of Cr(VI) only reached 1.1% and 9.9% of the inlet concentration at 220 and 240 min, with an IDS-4Na concentration of 4 mM, a pH of 2.5, and a space velocity of 0.265 min-1. The Bohart-Adams model was appropriate to predict the initial part of Cr(VI) breakthrough curves in the nZVI/NaA-NF fixed bed. The saturated concentration (N0) increased with an increase in inlet Cr(VI) concentration. The Yoon-Nelson model afforded good fitting results for all breakthrough curves of Cr(VI). The k' value increased with an increase in space velocity, and the τ value decreased.
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Affiliation(s)
- Jian Liu
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China; Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang, 421008, China; Hunan Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River, Hengyang, 421008, China.
| | - Xueren Huang
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China
| | - Zhengji Yi
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang, 421008, China; Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang, 421008, China; Hunan Engineering Research Center for Monitoring and Treatment of Heavy Metals Pollution in the Upper Reaches of Xiangjiang River, Hengyang, 421008, China
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Liu Z, Dai X, He J, Lin M, Luo H, Fan L, Zhang K, Ma D, Wang J, Chen W. Amphichdiral enhancement on singlet oxygen generation and stable thallium immobilization using iron-driven copper oxide. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121524. [PMID: 38897082 DOI: 10.1016/j.jenvman.2024.121524] [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: 03/12/2024] [Revised: 05/30/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
Thallium (Tl) as a prominent priority contaminant in aquatic environment necessitates rigorous regulation. However, limited horizon devotes the impact of selective oxidation on the process of thallium purification. In this study, selective active radical of singlet oxygen (1O2) was continually generated for Tl(Ⅰ) oxidation accomplished with efficient Tl(Ⅲ) immobilization using iron-driven copper oxide (CuFe)/peroxymonosulfate (PMS). Fe-doping changed the active center of electronic structure for enhancing the catalytic and adsorptive reactivities, and installed magnetism for solid-liquid separation. Rapid reaction rate (0.253 min-1) coupled with vigorous elimination efficiency (98.32%) relied on electrostatic attraction, surface complexation, and H-bond interaction. EPR and XPS analyses demonstrated that the synergistic effects of ≡ Cu(Ⅰ)/≡Cu(Ⅱ) and ≡ Fe(Ⅲ)/≡Fe(Ⅱ) redounded to the sustained generation of 1O2 through the pathway of PMS → •O2- → 1O2, and 1O2 exploited an advantage to selectively oxidize Tl(Ⅰ) to Tl(Ⅲ). 3D isosurface cubic charts revealed that the immobilizing ability of Tl(Ⅲ) hydrate for CuFe was notably superior to that of Tl(Ⅲ) hydrate for CuO and Tl(Ⅰ) hydrate for CuO/CuFe, which further attested surface reactivity promoted stable immobilization form. This work develops the continuous generation of 1O2 and stable immobilization with the goal of efficiently cleansing Tl-containing wastewater.
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Affiliation(s)
- Zhujun Liu
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Xinning Dai
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Jun He
- Environmental Monitoring Station of Hanyuan, Ya'an, 625300, China
| | - Mengyi Lin
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Hongbing Luo
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Liangqian Fan
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Ke Zhang
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Dandan Ma
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Jun Wang
- College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China
| | - Wei Chen
- Sichuan Higher Education Engineering Research Center for Disaster Prevention and Mitigation of Village Construction, Sichuan Agricultural University, Chengdu, 611830, China; College of Civil Engineering, Sichuan Agricultural University, Chengdu, 611830, China.
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Zhou Y, Wang X, Yang Y, Jiang L, Wang X, Tang Y, Xiao L. Enhanced copper removal by magnesium modified biochar derived from Alternanthera philoxeroides. ENVIRONMENTAL RESEARCH 2024; 251:118652. [PMID: 38508361 DOI: 10.1016/j.envres.2024.118652] [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: 09/12/2023] [Revised: 02/12/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
Adsorption processes are being widely used by various researchers for the removal of heavy metals from waste streams and biochar has been frequently used as an adsorbent. In this study, a MgO-loaded biochar derived from Alternanthera philoxeroides (MAPB) was synthesized for the removal of Cu(II). Compared with other biochar absorbents, MAPB showed a relatively slow adsorption kinetics, but an effective removal of Cu(II) with a maximum sorption capacity of 1, 238 mg/g. The adsorption mechanism of Cu(II) by MAPB was mainly controlled by chemical precipitation as Cu2(OH)3NO3, complexation and ion replacement. Fixed bed column with MAPB packed in same dosage (1, 000 mg) and different bed depth (1.3, 2.6 and 3.9 cm) showed that the increased of bed depth by mixing MAPB with quartz sand could increase the removal of Cu(II). The fitted breakthrough (BT) models showed that mixing MAPB with support media could reduce the mass transfer rate, increase the dynamic adsorption capacity and BT time. Therefore, MAPB adsorbent act as a highly efficient long-term adsorbent for Cu(II) contaminated water treatment may have great ecological and environmental significance.
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Affiliation(s)
- Yingping Zhou
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Xiaoyu Wang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Yu Yang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Lijuan Jiang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Xiaolin Wang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Yuqiong Tang
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China
| | - Lin Xiao
- School of the Environment, State Key Laboratory for Pollution Control and Resource Reuse, Nanjing University Xianlin Campus, Nanjing, 210023, China.
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5
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Miao Z, Mu M, Yu HY, Dong Y. "Green" electrostatic droplet-assisted forming cellulose microspheres with excellent structural controllability and stability for efficient Cr(VI) removal. Carbohydr Polym 2024; 328:121749. [PMID: 38220317 DOI: 10.1016/j.carbpol.2023.121749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 12/25/2023] [Accepted: 12/26/2023] [Indexed: 01/16/2024]
Abstract
This study presents a novel and environmentally friendly method for producing cellulose microspheres (CM) with controllable morphology and size using electrostatic droplets. The traditional droplet method for CM production requires complex equipment and harmful reagents. In contrast, the proposed method offers a simple electrostatic droplet approach to fabricate CM10 at 10 kV, which exhibited a smaller volume, linear microscopic morphology, and a larger specific surface area, with a 36.60 % improvement compared to CM0 (prepared at 0 kV). CM10 also demonstrated excellent underwater structural stability, recovering in just 0.5 s, and exhibited the highest adsorption capacity for Cr(VI) at 190.16 mg/g, a 72.15 % improvement over CM0. This enhanced adsorption capacity can be attributed to the unique structure of CM10 and the introduction of more amino groups. Moreover, CM10 displayed good cyclic adsorption capacity and high dynamic adsorption efficiency, making it highly suitable for practical applications. CM10 exhibited remarkable adsorption capacity, stability, and practical value in treating Cr(VI) wastewater. This work proposes a simple and eco-friendly method for producing CM with excellent structural controllability and stability, providing an effective route for wastewater treatment.
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Affiliation(s)
- Zhouyu Miao
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Mengya Mu
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Hou-Yong Yu
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University, Shanghai 201620, China.
| | - Yanjuan Dong
- Key Laboratory of Intelligent Textile and Flexible Interconnection of Zhejiang Province, Zhejiang Sci-Tech University, Hangzhou 310018, China
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6
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Cui T, Yan S, Ding Y, Lin S, Chen Q, Hou Y, Ding L, Wang H, Xu R. Chromium immobilization from wastewater via iron-modified hydrochar: Different iron fabricants and practicality assessment. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 274:116132. [PMID: 38471342 DOI: 10.1016/j.ecoenv.2024.116132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/06/2024] [Accepted: 02/18/2024] [Indexed: 03/14/2024]
Abstract
The recycling of industrial solid by-products such as red mud (RM) has become an urgent priority, due to their large quantities and lack of reutilization methods can lead to resource wastage. In this work, RM was employed to fabricate green hydrochar (HC) to prepare zero-valent iron (ZVI) modified carbonous materials, and conventional iron salts (IS, FeCl3) was applied as comparison, fabricated HC labeled as RM/HC and IS/HC, respectively. The physicochemical properties of these HC were comprehensively characterized. Further, hexavalent chromium (Cr(VI)) removal performance was assessed (375.66 and 337.19 mg/g for RM/HC and IS/HC, respectively). The influence of dosage and initial pH were evaluated, while isotherms, kinetics, and thermodynamics analysis were also conducted, to mimic the surface interactions. The stability and recyclability of adsorbents also verified, while the practical feasibility was assessed by bok choy-planting experiment. This work revealed that RM can be used as a high value and green fabricant for HC the effective removal of chromium contaminants from the wastewater.
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Affiliation(s)
- Ting Cui
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Song Yan
- Agency on Rural Energy Management of Yunnan Province, Kunming 650500, China
| | - Yu Ding
- Rural Energy Workstation of Baoshan City, Baoshan 678000, China
| | - Shaopeng Lin
- Rural Energy Workstation of Baoshan City, Baoshan 678000, China
| | - Qiuliang Chen
- Rural Energy Workstation of Honghe City, Honghe 661000, China
| | - Ying Hou
- Agricultural Environmental Protection and Rural Energy Workstation of Luoping, Qvjing 655800, China
| | - Lin Ding
- National-Local Joint Engineering Research Center for Heavy Metal Pollutant Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, PR China
| | - Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China; Agency on Rural Energy Management of Yunnan Province, Kunming 650500, China.
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China; Agency on Rural Energy Management of Yunnan Province, Kunming 650500, China.
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Chon K, Mo Kim Y, Bae S. Advances in Fe-modified lignocellulosic biochar: Impact of iron species and characteristics on wastewater treatment. BIORESOURCE TECHNOLOGY 2024; 395:130332. [PMID: 38224787 DOI: 10.1016/j.biortech.2024.130332] [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: 08/16/2023] [Revised: 01/08/2024] [Accepted: 01/12/2024] [Indexed: 01/17/2024]
Abstract
Lignocellulosic biomass is an attractive feedstock for biochar production owing to its high abundance and renewability. Various modified biochars have been extensively studied for wastewater treatment to improve the physical and chemical properties of lignocellulosic biochar (L-BC). Particularly, Fe-modified L-BCs have garnered attention owing to the abundance and eco-friendliness of Fe and the outstanding ability to remove various organic and inorganic contaminants via adsorption, oxidation, reduction, and catalytic reactions. Different iron species (e.g., Fe(0), Fe (hydr)oxide, Fe sulfide, and Fe-Metal) are formed during the preparation of Fe-L-BCs, which can completely differentiate the physical and chemical properties of BCs. This review discusses the advances in the synthesis of different Fe-L-BCs, specific changes in the physical and chemical properties of Fe-L-BCs upon Fe addition, and their impacts on wastewater treatment. The results of this review can demonstrate the unique advantages and drawbacks of Fe-L-BCs for the removal of different types of pollutants.
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Affiliation(s)
- Kangmin Chon
- Department of Integrated Energy and Infrasystem, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea; Department of Environmental Engineering, College of Engineering, Kangwon National University, Kangwondaehak-gil 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea
| | - Young Mo Kim
- Department of Civil and Environmental Engineering, Hanyang University, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Sungjun Bae
- Department of Civil and Environmental Engineering, Konkuk University, Seoul 05029, Republic of Korea.
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8
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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: 8] [Impact Index Per Article: 8.0] [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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10
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Sharma K, Kohansal K, Azuara AJ, Rosendahl LA, Benedetti V, Yu D, Pedersen TH. Green and facile recycling of bauxite residue to biochar-supported iron-based composite material for hydrothermal liquefaction of municipal solid waste. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 171:259-270. [PMID: 37683376 DOI: 10.1016/j.wasman.2023.08.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 07/20/2023] [Accepted: 08/23/2023] [Indexed: 09/10/2023]
Abstract
Industrial and municipal wastes remain significant sources of air, soil, and water pollution, thus causing adverse climate and health impacts. EU faces challenges in developing green recycling processes and reducing GHG emissions. Innovation in green catalysis is a key driver toward the fulfilment of these goals. This study demonstrated a single-step "Green Recycling" route by which different wastes e.g., industrial and bioorganic wastes are treated to produce biochar/Fe(0) (BC-Fe(0)) material. Typically, three different biomass namely organic fraction of municipal solid waste (biopulp), wheat straw (WS), and microalgae (MA) were used as green reducing agents for reducing bauxite residue (BR). Among all biomass, the high reduction potential of amino acids present in biopulp facilitated the synthesis of BC-Fe(0). BC-Fe(0) material acted as an effective catalyst for HTL of biopulp as the results showed the highest bio-crude yield (44 wt%) at 300 °C for 30 min with 10 wt% BC-Fe(0) loading (containing 2.5 wt% Fe). Furthermore, BC-Fe(0) also assisted in-situ hydrogenation and deoxygenation of chemical compounds present in the bio-liquid product, therefore bio-crude exhibited a higher H/C ratio (1.73) and lower oxygen contents (9.78 wt%) in comparison to bio-crude obtained without catalyst. However, Raw BR and reduced BR (RED) as catalysts showed no significant effect on the yield and oxygen content of bio-crude, which confirms the high catalytic activity of Fe(0) containing BC-Fe(0). Therefore, this study demonstrates the greener path for the one-step valorization of industrial and organic wastes, as an alternative to existing chemical and high temperature-based waste recycling and catalyst synthesis technologies.
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Affiliation(s)
- Kamaldeep Sharma
- Department of Energy, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, Denmark
| | - Komeil Kohansal
- Department of Energy, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, Denmark
| | - Antonio Jaime Azuara
- Department of Energy, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, Denmark
| | | | - Vittoria Benedetti
- Faculty of Science and Technology, Free University of Bolzano, 39100 Bozen-Bolzano, Italy
| | - Donghong Yu
- Department of Chemistry and Bioscience, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, Denmark
| | - Thomas Helmer Pedersen
- Department of Energy, Aalborg University, Pontoppidanstræde 111, 9220 Aalborg Øst, Denmark.
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11
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Zhao S, Jie X, Ma Z, Wang Z, Zhang J, Li Y, Nie Q, Ma Y. Preparation of Taraxacum kok-saghyz Rubber and Biofuel Ethanol Simultaneously by the Yeast Fermentation Process. ACS OMEGA 2023; 8:24185-24197. [PMID: 37457490 PMCID: PMC10339325 DOI: 10.1021/acsomega.2c07870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Accepted: 04/28/2023] [Indexed: 07/18/2023]
Abstract
Taraxacum kok-saghyz(TKS) rubber is considered the most ideal alternative source of natural rubber (NR). Extracting rubber from TKS with high quality, low cost, and low pollution is the basis of commercial development. The TKS roots were subjected to morphological observation and detailed compositional analysis. Scanning electron microscopy (SEM) images confirm that rubber filaments are physically entangled with plant tissues due to differences in molecular polarity. Compared with the traditional solvent TKS rubber extraction process, a new rubber extraction process developed in this study, namely, the microbial extraction (″ME″) process, is less harmful to the environment and lower in cost. The ″ME″ process is divided into three steps: dilute acid pretreatment process, enzyme degradation process, and fermentation process. After each step is completed, the purity of TKS rubber will gradually increase from 84.8% to 93.8 to 95.5%. The TKS rubber finally obtained fully meets the requirements of the traditional rubber industry, especially the tire industry. Besides, the yield of biofuel ethanol, a by-product of cellulose fermentation, reaches 2.05 g/100 g of TKS roots (dry weight), which can effectively reduce the production cost of TKS rubber. In the rubber extraction process, microorganisms have little effect on the quality of TKS rubber. The results show that the molecular weight and chemical structure of TKS rubber is very close to NR, so the ″ME″ process can be used as a new method for large-scale extraction of TKS rubber.
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Affiliation(s)
- Shuai Zhao
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Xiang Jie
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Zhe Ma
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
| | - Zheng Wang
- College
of Life Science and Technology, Beijing
University of Chemical Technology, Beijing 100029, China
| | - Jichuan Zhang
- Center
of Advanced Elastomer Materials, College of Material Science &
Engineering, Beijing University of Chemical
Technology, Beijing 100029, China
- Energy
Conservation and Resource Utilization Engineering Research Center
of Elastomer Materials, Ministry of Education, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yushi Li
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
| | - Qiuhai Nie
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
| | - Yong Ma
- Shandong
Linglong Tyre Co., Ltd, Zhaoyuan 265406, China
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12
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Yoon K, Cho DW, Kwon G, Rinklebe J, Wang H, Song H. Practical approach of As(V) adsorption by fabricating biochar with low basicity from FeCl3 and lignin. CHEMOSPHERE 2023; 329:138665. [PMID: 37044148 DOI: 10.1016/j.chemosphere.2023.138665] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/08/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
One of the main challenges of biochar application for environmental cleanup is rise of pH in water or soil due to high ash and alkali metal contents in the biochar. While this intrinsic property of biochar is advantageous in alleviating soil and water acidity, it severely impairs the affinity of biochar toward anionic contaminants such as arsenic. This study explored a technical approach that can reduce the basicity of lignin-based biochar by utilizing FeCl3 during production of biochar. Three types of biochar were produced by co-pyrolyzing feedstock composed of different combinations of lignin, red mud (RM), and FeCl3, and the produced biochar samples were applied to adsorption of As(V). The biochar samples commonly possessed porous carbon structure embedded with magnetite (Fe3O4) particles. The addition of FeCl3 in the pyrolysis feedstock had a notable effect on reducing basicity of the biochar to yield significantly lower solution pH values than the biochar produced without FeCl3 addition. The extent of As(V) removal was also closely related to the final solution pH and the greatest As(V) removal (>77.6%) was observed for the biochar produced from co-pyrolysis of lignin, RM, and FeCl3. The results of adsorption kinetics and isotherm experiments, along with x-ray spectroscopy (XPS), strongly suggested adsorption of As(V) occurred via specific chemical reaction (chemisorption) between As(V) and Fe-O functional groups on magnetite. Thus, the overall results suggest the use of FeCl3 is a feasible practical approach to control the intrinsic pH of biochar and impart additional functionality that enables effective treatment of As(V).
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Affiliation(s)
- Kwangsuk Yoon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Dong-Wan Cho
- Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), Daejeon, 34132, Republic of Korea
| | - Gihoon Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285, Wuppertal, Germany
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong, 528000, China
| | - Hocheol Song
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul, 04763, Republic of Korea.
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13
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Wang H, Wu Y, Wen Y, Chen D, Pu J, Ding Y, Kong S, Wang S, Xu R. Simultaneously Cationic and Anionic Dyes Elimination via Magnetic Hydrochar Prepared from Copper Slag and Pinewood Sawdust. TOXICS 2023; 11:484. [PMID: 37368584 DOI: 10.3390/toxics11060484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/21/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023]
Abstract
In practical wastewater, cationic and anionic dyes usually coexist, while synergistic removal of these pollutants is difficult due to their relatively opposite properties. In this work, copper slag (CS) modified hydrochar (CSHC) was designed as functional material by the one-pot method. Based on characterizations, the Fe species in CS can be converted to zero-valent iron and loaded onto a hydrochar substrate. The CSHC exhibited efficient removal rates for both cationic dyes (methylene blue, MB) and anionic dyes (methyl orange, MO), with a maximum capacity of 278.21 and 357.02 mg·g-1, respectively, which was significantly higher than that of unmodified ones. The surface interactions of MB and MO between CSHC were mimicked by the Langmuir model and the pseudo-second-order model. In addition, the magnetic properties of CSHC were also observed, and the good magnetic properties enabled the adsorbent to be quickly separated from the solution with the help of magnets. The adsorption mechanisms include pore filling, complexation, precipitation, and electrostatic attraction. Moreover, the recycling experiments demonstrated the potential regenerative performance of CSHC. All these results shed light on the co-removal of cationic and anionic contaminates via these industrial by-products derived from environmental remediation materials.
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Affiliation(s)
- Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Yi Wu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Yi Wen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Dingxiang Chen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
| | - Jiang Pu
- Shiping Center for Rural Energy and Environment, Honghe 661400, China
| | - Yu Ding
- Baoshan City Longyang Rural Energy Workstation, Baoshan 678000, China
| | - Sailian Kong
- Development Center for Rural Affairs of Jiangchuan District, Yuxi 651100, China
| | - Shuaibing Wang
- College of Chemistry Biology and Environment, Yuxi Normal University, Yuxi 653100, China
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
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14
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Yang X, Zhu W, Chen F, Song Y, Yu Y, Zhuang H. Modified biochar prepared from Retinervus luffae fructus for dyes adsorption and aerobic sludge granulation. CHEMOSPHERE 2023; 322:138088. [PMID: 36754295 DOI: 10.1016/j.chemosphere.2023.138088] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 01/23/2023] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
Retinervus luffae fructus biochar (RLFB) and ZnCl2 pretreated Retinervus luffae fructus biochar (ZRLFB) were prepared by pyrolysis. The as-prepared biochar was investigated for its applicability as a dye adsorber using sunset yellow (SY) and basic red 46 (BR46) dyes. Additionally, ZRLFB was used for the experimental cultivation of granular sludge. The results indicated that the adsorption effect of ZRLFB on the two dyes was higher than RLFB. The adsorption of RLFB to SY was related to the Langmuir and Freundlich models, whereas the adsorption of RLFB-BR46, ZRLFB-SY, and ZRLFB-BR46 was more in line with the Langmuir model. The adsorption process of dyes on two kinds of biochars can be described using pseudo-second-order mechanisms. The maximum adsorption capacity obtained was 1.9586 (RLFB-SY), 6.1286 (RLFB-BR46), 49.2611 (ZRLFB-SY), and 181.4882 mg g-1 (RLFB-BR46). The result of the SBR operation showed that ZRLFB can potentially be applied as the core of aerobic granular sludge.
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Affiliation(s)
- Xinyuan Yang
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, 310000, China
| | - Wenfang Zhu
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, 310000, China; Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Hangzhou, 310023, China.
| | - Fangyuan Chen
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, 310000, China
| | - Yali Song
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, 310000, China; Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Hangzhou, 310023, China
| | - Ya Yu
- School of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou, 310000, China
| | - Haifeng Zhuang
- School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310000, China; Key Laboratory of Recycling and Eco-treatment of Waste Biomass of Zhejiang Province, Hangzhou, 310023, China
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15
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Teng Z, Zhao X, Jia B, Ye L, Tian S, Guo H, Guo Y, Ji X, Li T, Li M. Bioremediation system consisted with Leclercia adecarboxylata and nZVI@Carbon/Phosphate for lead immobilization: The passivation mechanisms of chemical reaction and biological metabolism in soil. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 340:117888. [PMID: 37087891 DOI: 10.1016/j.jenvman.2023.117888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/21/2023] [Accepted: 04/04/2023] [Indexed: 05/03/2023]
Abstract
Bioremediation is one of the most promising strategies for heavy metal immobilization. A new remediation system was demonstrated in this research, which combined phosphate solubilizing bacteria (PSB) with nZVI@Carbon/Phosphate (nZVI@C/P) composite to remediate lead contaminated soil. Experimental results indicated that the new system (nZVI@C/P + PSB) could effectively convert the labile Pb into the stable fraction after 30 days of incubation, which increased the maximum residual fraction percentage of Pb by 70.58%. The characterization results showed that lead may exist in the forms of Pb5(PO4)3Cl, PbSO4 and 3PbCO3·2Pb(OH)2·H2O in the soil treated with nZVI@C/P + PSB. Meanwhile, soil enzyme activities and Leclercia abundance were enhanced in the treated soil compared with CK during the incubation time. In addition, the specialized functions (e.g. ABC transporters, siderophore metabolism, sulfur metabolism and phosphorus metabolism) in PSB and nZVI@C/P + PSB group were also enhanced. These phenomena proved that the key soil metabolic functions may be maintained and enhanced through the synergistic effect of incubated PSB and nZVI@C/P. The study demonstrated that this new bioremediation system provided feasible way to improve the efficacy for lead contaminated soil remediation.
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Affiliation(s)
- Zedong Teng
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
| | - Xin Zhao
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China
| | - Bojie Jia
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Liangjun Ye
- Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Shaojing Tian
- Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Huiyuan Guo
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yali Guo
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai, 200335, China
| | - Xiaonan Ji
- Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai, 200335, China; YANGTZE Eco-Environment Engineering Research Center (Shanghai), China Three Gorges Corporation, Shanghai, 200335, China
| | - Tinggang Li
- Key Laboratory of Green Process and Engineering, Beijing Engineering Research Centre of Process Pollution Control, National Engineering Research Center of Green Recycling for Strategic Metal Resources, Institute of Process Engineering, Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China; Ganjiang Innovation Academy, Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths, Chinese Academy of Sciences, Ganzhou, 341000, China
| | - Min Li
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing, 100083, China.
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16
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Wang H, Duan R, Ding L, Tian L, Liu Y, Zhang Y, Xu R. Magnetic hydrochar derived from waste lignin for thallium removal from wastewater: Performance and mechanisms. BIORESOURCE TECHNOLOGY 2023; 374:128736. [PMID: 36791975 DOI: 10.1016/j.biortech.2023.128736] [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: 12/27/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 06/18/2023]
Abstract
Waste lignin, such as black liquor (BL) from paper and pulping industries, is an agro-industrial biowaste while its reuse raised global concerns. In this work, a hydrothermal carbonization procedure was employed to convert BL into magnetic lignin-based hydrochar (MLHC) for thallium elimination from wastewater. The results exhibited water purification potential due to a wider working pH window (2-9) with the magnetization intensity of 11.12 emu/g. The maximum adsorption capacity for Tl(III) was 278.9 mg/g, while the contribution of various mechanisms was elucidated with the order: surface precipitation (31.3 %), complexation (20.6 %), physical adsorption (18.2 %), chemical reduction (15.0 %), and ion exchange (14.9 %). This study revealed that hydrothermal treatment could be a potential and promising method to convert waste lignin into magnetic bio-adsorbent to recycle pulping black liquor and apply it for thallium pollution control.
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Affiliation(s)
- 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
| | - 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
| | - Lin Ding
- National-Local Joint Engineering Research Center for Heavy Metal Pollutant Control and Resource Utilization, Nanchang Hangkong University, Nanchang 330063, 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
| | - Ying Liu
- 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
| | - 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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17
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Tomczyk A, Kubaczyński A, Szewczuk-Karpisz K. Assessment of agricultural waste biochars for remediation of degraded water-soil environment: Dissolved organic carbon release and immobilization of impurities in one- or two-adsorbate systems. WASTE MANAGEMENT (NEW YORK, N.Y.) 2023; 155:87-98. [PMID: 36356434 DOI: 10.1016/j.wasman.2022.10.039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 09/26/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
This paper presents a method of agricultural waste management - the production of two biochars (BC) from potato and raspberry stems. It defines the potential of these materials for remediation of degraded water and soil environments. The performed study included analyses of BC physicochemistry, dissolved organic carbon (DOC) release and ability to immobilize copper (Cu), tetracycline (TC) and carboxin (CB) in one- and two-adsorbate systems. The BCs were obtained with pyrolysis at 600 °C for 30 min in a nitrogen atmosphere. Their DOC was predominantly constituted of substances with large molecular weights and high aromaticity, meaning that both BCs can be safely applied as soil additives. Potato-biochar (P-BC) had a more developed surface than raspberry-biochar (R-BC). The specific surface area (SBET) of P-BC was 122 m2/g, whilst of R-BC was 87 m2/g. As a result, the efficiency of impurity adsorption in the one-adsorbate systems was higher for P-BC (61.75% for Cu, 73.84% for TC, and 54.43% for CB). In the two-adsorbate systems, organic impurities improved the immobilization of heavy metal ions on BCs. The efficiency of Cu adsorption on P-BC when TC was present was 88.29%. Desorption of Cu from BC was highest using HCl, whilst that of TC and CB was highest using NaOH. Maximum desorption was observed in a two-adsorbate system with TC + CB (up to 63.6% for TC). These results confirmed that potato and raspberry stems can be used to produce highly effective BCs with large application potential, especially for remediation of degraded soils and polluted waters.
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Affiliation(s)
- Agnieszka Tomczyk
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
| | - Adam Kubaczyński
- Institute of Agrophysics, Polish Academy of Sciences, Doświadczalna 4, 20-290 Lublin, Poland
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18
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Wang H, Wen Y, Ding Y, Yue Z, Xu D, Liu Y, Zhang Y, Xu R, Zeng W. Rapid and Effective Lead Elimination Using Cow Manure Derived Biochar: Balance between Inherent Phosphorus Release and Pollutants Immobilization. TOXICS 2022; 11:1. [PMID: 36668727 PMCID: PMC9861172 DOI: 10.3390/toxics11010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 12/13/2022] [Accepted: 12/16/2022] [Indexed: 06/17/2023]
Abstract
Cow manure derived biochar (CMBC) can serve as a promising functional material, and CMBC can be regarded as an ecofriendly approach compared to conventional ones. CM bioadsorbent can be employed for heavy metal immobilization (such as for lead) as well as an amendment to increase soil fertility (e.g., phosphorus). Few studies have examined the surface interactions between pollutants and bioadsorbents when inherent nutrient release is present. In this work, CMBC was prepared and applied for Pb(II) removal, and the vital roles of released phosphorus from CMBC were comprehensively disclosed. Furthermore, CMBC could immobilize part of the Pb(II) in soil and promote plant growth. CM400 was an effective adsorbent whose calculated Qe reached 691.34 mg·g-1, and it rapidly adsorbed 98.36 mg·g-1 of Pb(II) within 1 min. The adsorption mechanisms of Pb(II) by CMBC include ion exchange, physical adsorption, electrostatic attraction, chemical precipitation, surface complexation, and cation-π bond interaction. Based on the residual phosphorus content and adsorption effect, complexation rather than the chemical precipitation had a greater contribution toward adsorption. Besides, as the concentration of Pb(II) increased, the main adsorption mechanisms likely transformed from chemical precipitation to ion exchange and complexation. CMBC not only had a good effect on Pb(II) removal in the solution, but also immobilized the Pb(II) in soil to restrain plant uptake as well as promote plant growth. The main novelty of this work is providing more insights to the cow manure bio adsorbent on Pb immobilization and phosphorus release. This study is expected to serve as a basis and reference for analyzing the release effects of inherent nutrients and the interfacial behaviors with heavy metals when using CMBC and other nutrient-rich carbon-based fertilizers for pollution control.
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Affiliation(s)
- Huabin Wang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Yi Wen
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Yu Ding
- Baoshan City Longyang Rural Energy Workstation, Baoshan 678000, China
| | - Zhiqiang Yue
- Yuxi Agricultural Environmental Protection and Rural Energy Workstation, Yuxi 653100, China
| | - Dan Xu
- Baoshan City Longyang Rural Energy Workstation, Baoshan 678000, China
| | - Ying Liu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Yong Zhang
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Rui Xu
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yunnan Key Laboratory of Rural Energy Engineering, Kunming 650500, China
| | - Weiqing Zeng
- School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China
- Yuxi Agricultural Environmental Protection and Rural Energy Workstation, Yuxi 653100, China
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19
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Luo Q, Chen D, Cui T, Duan R, Wen Y, Deng F, Li L, Wang H, Zhang Y, Xu R. Selenite elimination via zero-valent iron modified biochar synthesized from tobacco straw and copper slag: Mechanisms and agro-industrial practicality. Front Bioeng Biotechnol 2022; 10:1054801. [DOI: 10.3389/fbioe.2022.1054801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 10/25/2022] [Indexed: 11/15/2022] Open
Abstract
Cost-effectively improving the performance of biochar is essential for its large-scale practical application. In this work, the agro-industrial by-products copper slag and tobacco straw were employed for the preparation of modified biochar (CSBC). The obtained CSBC exhibited satisfactory capacity on Se(IV) immobilization of 190.53 mg/g, with surface interactions determined by the monolayer and mainly chemisorption. The removal mechanisms included chemical reduction, electrostatic attraction, co-precipitation, and formation of complexations. Interestingly, the existence of Cu2Se structure after adsorption indicated the involvement of Cu species within Se(IV) elimination. Moreover, the industrial agricultural practicality of CSBC was evaluated by regeneration tests, economic assessment, and pot experiments. The results demonstrate that iron species-modified biochar prepared from two agro-industrial by-products is a promising and feasible candidate for selenite removal from wastewater.
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20
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Wang T, Sun Y, Bai L, Han C, Sun X. Ultrafast removal of Cr(VI) by chitosan coated biochar-supported nano zero-valent iron aerogel from aqueous solution: Application performance and reaction mechanism. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Microcontaminant removal in solar pilot scale photoreactors with commercial iron nanoparticles obtained from olive mill wastewater. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.11.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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22
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Tan X, Deng Y, Shu Z, Zhang C, Ye S, Chen Q, Yang H, Yang L. Phytoremediation plants (ramie) and steel smelting wastes for calcium silicate coated-nZVI/biochar production: Environmental risk assessment and efficient As(V) removal mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 844:156924. [PMID: 35779737 DOI: 10.1016/j.scitotenv.2022.156924] [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: 02/24/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
Arsenic is one of the most common and harmful pollutants in environment throughout the world, especially in aqueous solutions. In this study, two kinds of industrial solid wastes (Oxide scale (OS) and Blast furnace slag (BFS)) and one kind of phytoremediation plant waste (Ramie stalk) were used to prepare an environmentally friendly, low-cost, and efficient calcium silicate coated nano zero-valent iron (nZVI)/biochar composite (BOS) for As(V) adsorption. The potential environmental risks of BOS and their effects on removal of arsenic ions from aqueous media were investigated. The adsorption mechanism was explored and discussed based on XRD, SEM-EDS, XPS, etc. The results suggested that the environmental risk and heavy metals toxicity in BOS by co-pyrolysis were significantly reduced compared to the original materials, and no additional contaminant was observed in the subsequent experiments. Simultaneously, the BOS showed excellent As(V) removal capacity (>99%) and regenerative properties. The As(V) removal mechanisms are mainly ascribed to the complexation and co-precipitation between Fe and As, and the hydrogen bond between CO functional group of BOS and As. The mechanism of enhanced nZVI activity for As(V) removal was revealed. A protective layer of Ca2SiO4 was formed on the surface of nZVI during the co-pyrolysis process to prevent the passivation of nZVI. During the reaction process, the Ca2SiO4 covering the nZVI surface would be continuously detached to expose the fresh surface of nZVI, thus providing more redox activity and adsorption sites. This study provides a new way to treat and recycle industrial steel solid wastes and phytoremediation plant wastes, and the produced calcium silicate coated-nZVI/biochar composite is proposed to be a very promising material for practical remediation of As(V)-contaminated water bodies.
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Affiliation(s)
- Xiaofei Tan
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China.
| | - Yuanyuan Deng
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Zihan Shu
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Chen Zhang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Shujing Ye
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Qiang Chen
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Hailan Yang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
| | - Lei Yang
- College of Environmental Science and Engineering, Hunan University and Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China
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Xiao WD, Xiao LP, Lv YH, Yin WZ, Sánchez J, Zhai SR, An QD, Sun RC. Lignin-derived carbon coated nanoscale zero-valent iron as a novel bifunctional material for efficient removal of Cr(VI) and organic pollutants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121689] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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24
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Wei Y, Chu R, Zhang Q, Usman M, Haider FU, Cai L. Nano zero-valent iron loaded corn-straw biochar for efficient removal of hexavalent chromium: remediation performance and interfacial chemical behaviour. RSC Adv 2022; 12:26953-26965. [PMID: 36320854 PMCID: PMC9534316 DOI: 10.1039/d2ra04650d] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 08/24/2022] [Indexed: 11/06/2022] Open
Abstract
To improve the poor stability of nano zero-valent iron (nZVI), corn-straw biochar (BC) was used as a support for the synthesis of composites of nZVI-biochar (nZVI/BC) in different mass ratios. After a thorough characterization, the obtained nZVI/BC composite was used to remove hexavalent chromium [Cr(vi)] in an aquatic system under varying conditions including composite amount, Cr(vi) concentration, and pH. The obtained results show that the treatment efficiency varied in the following order: nZVI-BC (1 : 3) > nZVI-BC (1 : 5) > nZVI alone > BC alone. This order indicates the higher efficiency of composite material and the positive effect of nZVI content in the composite. Similarly, the composite dosage and Cr(vi) concentration had significant effects on the removal performance and 2 g L-1 and 6 g L-1 were considered to be the optimum dose at a Cr(vi) concentration of 20 mg L-1 and 100 mg L-1, respectively. The removal efficiency was maximum (100%) at pH 2 whereas solution pH increased significantly after the reaction (from 2 to 4.13). The removal kinetics of Cr(vi) was described by a pseudo-second-order model which indicated that the removal process was mainly controlled by the rate of chemical adsorption. The thermodynamics was more in line with the Freundlich model which indicated that the removal was multi-molecular layer adsorption. TEM-EDS, XRD, and XPS were applied to characterize the crystal lattice and structural changes of the material to specify the interfacial chemical behaviour on the agent surface. These techniques demonstrate that the underlying mechanisms of Cr(vi) removal include adsorption, chemical reduction-oxidation reaction, and co-precipitation on the surface of the nZVI-BC composite. The results indicated that the corn-straw BC as a carrier material highly improved Cr(vi) removal performance of nZVI and offered better utilization of the corn straw.
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Affiliation(s)
- Yuzhen Wei
- College of Forestry, Gansu Agricultural University Lanzhou 730070 P. R. China
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Run Chu
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Qinhu Zhang
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Muhammad Usman
- PEIE Research Chair for the Development of Industrial Estates and Free Zones, Centre for Environmental Studies and Research, Sultan Qaboos University Al-Khoud 123 Muscat Oman
| | - Fasih Ullah Haider
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
| | - Liqun Cai
- College of Forestry, Gansu Agricultural University Lanzhou 730070 P. R. China
- College of Resources and Environmental Sciences, Gansu Agricultural University Lanzhou 730070 P. R. China
- Gansu Provincial Key Laboratory of Arid Land Crop Science, Gansu Agricultural University Lanzhou 730070 P. R. China
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25
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Sinha R, Kumar R, Sharma P, Kant N, Shang J, Aminabhavi TM. Removal of hexavalent chromium via biochar-based adsorbents: State-of-the-art, challenges, and future perspectives. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 317:115356. [PMID: 35623129 DOI: 10.1016/j.jenvman.2022.115356] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/01/2022] [Accepted: 05/17/2022] [Indexed: 06/15/2023]
Abstract
Chromium originates from geogenic and extensive anthropogenic activities and significantly impacts natural ecosystems and human health. Various methods have been applied to remove hexavalent chromium (Cr(VI)) from aquatic environmental matrices, including adsorption via different adsorbents, which is considered to be the most common and low-cost approach. Biochar materials have been recognized as renewable carbon sorbents, pyrolyzed from various biomass at different temperatures under limited/no oxygen conditions for heavy metals remediation. This review summarizes the sources, chemical speciation & toxicity of Cr(VI) ions, and raw and modified biochar applications for Cr(VI) remediation from various contaminated matrices. Mechanistic understanding of Cr(VI) adsorption using different biochar-based materials through batch and saturated column adsorption experiments is documented. Electrostatic interaction and ion exchange dominate the Cr(VI) adsorption onto the biochar materials in acidic pH media. Cr(VI) ions tend to break down as HCrO4-, CrO42-, and Cr2O72- ions in aqueous solutions. At low pH (∼1-4), the availability of HCrO4- ions attributes the electrostatic forces of attraction due to the available functional groups such as -NH4+, -COOH, and -OH2+, which encourages higher adsorption of Cr(VI). Equilibrium isotherm, kinetic, and thermodynamic models help to understand Cr(VI)-biochar interactions and their adsorption mechanism. The adsorption studies of Cr(VI) are summarized through the fixed-bed saturated column experiments and Cr-contaminated real groundwater analysis using biochar-based sorbents for practical applicability. This review highlights the significant challenges in biochar-based material applications as green, renewable, and cost-effective adsorbents for the remediation of Cr(VI). Further recommendations and future scope for the implications of advanced novel biochar materials for Cr(VI) removal and other heavy metals are elegantly discussed.
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Affiliation(s)
- Rama Sinha
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803 116, India
| | - Rakesh Kumar
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803 116, India
| | - Prabhakar Sharma
- School of Ecology and Environment Studies, Nalanda University, Rajgir, Bihar, 803 116, India.
| | - Nishi Kant
- Department of Environmental Science and Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, 826 004, Jharkhand, India
| | - Jianying Shang
- Department of Soil and Water Science, China Agricultural University, Beijing, 100083, China
| | - Tejraj M Aminabhavi
- School of Advanced Sciences, KLE Technological University, Hubballi, 580 031, India; School of Engineering, University of Petroleum and Energy Studies, Bidholi, Dehradun, Uttarakhand, 248 007, India; Department of Chemistry, Karnatak University, Dharwad, 580 003, India.
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26
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Wang H, Cui T, Chen D, Luo Q, Xu J, Sun R, Zi W, Xu R, Liu Y, Zhang Y. Hexavalent chromium elimination from wastewater by integrated micro-electrolysis composites synthesized from red mud and rice straw via a facile one-pot method. Sci Rep 2022; 12:14242. [PMID: 35987789 PMCID: PMC9392804 DOI: 10.1038/s41598-022-18598-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/16/2022] [Indexed: 11/30/2022] Open
Abstract
The widely spread chromium (Cr) contamination is rising environmental concerns, while the reutilization of agro-industrial by-products are also urgently demanded due to their potential risks. In this study, we prepared the integrated micro-electrolysis composites (IMC) through a facile one-pot method with red mud and rice straw. The effects of components relatively mass ratios as well as pyrolysis temperature were analyzed. The XRD, XPS, SEM, FTIR, and various techniques proved the IMC was successfully synthesized, which was also used to analyze the reaction mechanisms. In this study, the dosage of IMC, pH, adsorption time, and temperature of adsorption processes were explored, in the adsorption experiment of Cr(VI), dosage of IMC was 2 g/L (pH 6, 25 °C, and 200 rpm) for isothermal, while the concentration and contact time were also varied. According to the batch experiments, IMC exhibited acceptable removal capacity (190.6 mg/g) on Cr(VI) and the efficiency reached 97.74%. The removal mechanisms of adsorbed Cr(VI) were mainly elaborated as chemical reduction, complexation, co-precipitation, and physical adherence. All these results shed light on the facile preparation and agro-industrial by-products recycled as engineering materials for the heavy metals decontamination in wastewater.
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27
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Zhao R, Cao X, Li T, Cui X, Cui Z. Co-Removal Effect and Mechanism of Cr(VI) and Cd(II) by Biochar-Supported Sulfide-Modified Nanoscale Zero-Valent Iron in a Binary System. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27154742. [PMID: 35897924 PMCID: PMC9331559 DOI: 10.3390/molecules27154742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/16/2022]
Abstract
This study aimed to explore the co-removal effect and mechanism of Cr(VI) and Cd(II) with an optimized synthetic material. The toxicity and accumulation characteristics of Cr(VI) and Cd(II) encountered in wastewater treatment areas present significant challenges. In this work, a rational assembly of sulfide-modified nanoscale zero-valent iron (SnZVI) was introduced into a biochar (BC), and a Cr(VI)–Cd(II) binary system adsorbent with high efficiency was synthesized. When the preparation temperature of the BC was 600 °C, the molar ratio of S/Fe was 0.3, the mass ratio of BC/SnZVI was 1, and the best adsorption capacities of BC-SnZVI for Cr(VI) and Cd(II) in the binary system were 58.87 mg/g and 32.55 mg/g, respectively. In addition, the adsorption mechanism of BC-SnZVI on the Cr(VI)-Cd(II) binary system was revealed in depth by co-removal experiments, indicating that the coexistence of Cd(II) could promote the removal of Cr(VI) by 9.20%, while the coexistence of Cr(VI) could inhibit the removal of Cd(II) by 43.47%. This work provides a new pathway for the adsorption of Cr(VI) and Cd(II) in binary systems, suggesting that BC-SnZVI shows great potential for the co-removal of Cr(VI) and Cd(II) in wastewater.
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Affiliation(s)
- Rui Zhao
- School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Jimo District, Qingdao 266237, China; (R.Z.); (X.C.); (T.L.)
| | - Xiufeng Cao
- School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Jimo District, Qingdao 266237, China; (R.Z.); (X.C.); (T.L.)
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, 1000 Fengming Road, Lingang Development Zone, Jinan 250101, China;
| | - Tao Li
- School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Jimo District, Qingdao 266237, China; (R.Z.); (X.C.); (T.L.)
| | - Xiaowei Cui
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, 1000 Fengming Road, Lingang Development Zone, Jinan 250101, China;
| | - Zhaojie Cui
- School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Jimo District, Qingdao 266237, China; (R.Z.); (X.C.); (T.L.)
- Correspondence:
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28
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Kang K, Loebsack G, Sarchami T, Klinghoffer NB, Papari S, Yeung KKC, Berruti F. Production of a bio-magnetic adsorbent via co-pyrolysis of pine wood waste and red mud. WASTE MANAGEMENT (NEW YORK, N.Y.) 2022; 149:124-133. [PMID: 35728476 DOI: 10.1016/j.wasman.2022.06.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/25/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
The efficient reduction of accumulated waste biomass and red mud by converting them into a value-added magnetic adsorbent is both difficult and tempting in terms of sustainability. This study focused on investigating the reaction mechanism of co-pyrolysis of different biomasses, including pine wood, cellulose, and lignin, with red mud at 500, 650, and 800 °C, and the comprehensive characterizations of the produced bio-magnetic particles. The performance of biomass and red mud based magnetic adsorbents is also evaluated, and their primary adsorption mechanisms for organic pollutants are revealed by using different organic model compounds. The samples produced at 800 °C showed the best performance. For example, the sample prepared using red mud and pine wood at 800 °C showed the highest adsorption capacity of ibuprofen, which was 21.01 mg/g at ∼pH 4.5, indicating strong π stacking interactions as the dominant adsorption mechanism. When compared to lignin-rich biomass, adsorbents composed of cellulose-rich biomass showed greater adsorption efficacy. The findings show that co-pyrolysis of biomass with red mud can reduce waste while also producing a flexible adsorbent that is magnetically separable and effective at absorbing different organic contaminants from water.
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Affiliation(s)
- Kang Kang
- Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, Ontario, Canada; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada.
| | - Griffin Loebsack
- Department of Chemistry, Western University, London, Ontario, Canada
| | - Tahereh Sarchami
- Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, Ontario, Canada; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada
| | - Naomi B Klinghoffer
- Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, Ontario, Canada; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada
| | - Sadegh Papari
- Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, Ontario, Canada; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada
| | - Ken K-C Yeung
- Department of Chemistry, Western University, London, Ontario, Canada; Department of Biochemistry, Western University, London, Ontario, Canada
| | - Franco Berruti
- Institute for Chemicals and Fuels from Alternative Resources (ICFAR), Western University, London, Ontario, Canada; Department of Chemical and Biochemical Engineering, Western University, London, Ontario, Canada.
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29
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Zhong Y, Wang T, Yan M, Miao C, Zhou X, Tong G. High-value utilization of bamboo pulp black liquor lignin: Preparation of silicon-carbide derived materials and its application. Int J Biol Macromol 2022; 217:66-76. [PMID: 35835306 DOI: 10.1016/j.ijbiomac.2022.07.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/30/2022] [Accepted: 07/07/2022] [Indexed: 11/05/2022]
Abstract
The black liquor of bamboo pulp contains a large amount of silicon, which makes it difficult to separate industrial lignin, thus hindering its high-value utilization. Herein, this paper dedicates to exploring the high-value use of silica-containing lignin. Tetraethyl silicate (TEOS) was added to the above silicon-containing lignin for crosslinking with the lignin to prevent disintegration during carbonization and provide an additional source of silica. The carbonization is carried out at 600 °C (LT-6), 900 °C (LT-9) and 1200 °C (LT-12), and the structural evolution of SiOxCy is innovatively analyzed. The results show that LT-9 is dominated by the SiO3C structure and has a specific surface area of 269 m2 g-1. The specific capacitance of LT-9 and LT-12 as supercapacitors electrodes is 78.6 F g-1 and 74.8 F g-1 at a current density of 1 A g-1, and remains 95 % and 91.7 % after 10,000 cycles. Moreover, LT-9 has a high yield of 54 %. In this work, silicon-containing lignin is exploratively prepared as a silicon-carbide-derived material. Furthermore, the potential relationship between different SiOxCy molecular structures and electrochemical performance is evaluated, which is instructive for the high-value utilization of black liquor in bamboo pulp.
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Affiliation(s)
- Yidan Zhong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China
| | - Tao Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China
| | - Ming Yan
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China
| | - Chen Miao
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaofan Zhou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China; National-Provincial Joint Engineering Research Center of Electromechanical Product Packaging, Nanjing Forestry University, Nanjing 210037, China
| | - Guolin Tong
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology, College of Light Industry and Food, Nanjing Forestry University, Nanjing 210037, China; National-Provincial Joint Engineering Research Center of Electromechanical Product Packaging, Nanjing Forestry University, Nanjing 210037, China.
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30
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Pan J, Deng H, Du Z, Tian K, Zhang J. Design of nitrogen-phosphorus-doped biochar and its lead adsorption performance. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:28984-28994. [PMID: 34993773 DOI: 10.1007/s11356-021-17335-3] [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: 07/15/2021] [Accepted: 10/29/2021] [Indexed: 06/14/2023]
Abstract
The surface properties of the adsorbents and the acidic environment have an influence effect on Pb adsorption. In order to further improve the adsorption performance of biochar, we herein reported an effective method to synthesize high-adsorbed biochar by co-doping with nitrogen and phosphorus. After atom doping, the N/P co-doped biochar (NP-BC) showed the enhanced adsorption capacity for lead ion (Pb2+). The adsorption kinetics, isotherm, pH value, and influencing factors were studied. The results show that the synthesized NP-BC has high Pb2+ adsorption capacity in aqueous solution, and can be maintained with various environmental interference factors including pH, natural organic matter, and other metal ions. High adsorption performance shows that the material may be well used to remove Pb2+ in various water bodies. Various characterization experiments prove that surface properties contribute to Pb2+ adsorption, and the high performance of NP-BC is mainly due to the surface complexation between functional groups and Pb2+. This work demonstrates that the surface functional groups of biochar are critical to the development of high-performance heavy metal adsorbents.
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Affiliation(s)
- Jing Pan
- School of Environment and Resources, Xiangtan University, Xiangtan, 411100, China
| | - Haowang Deng
- School of Environment and Resources, Xiangtan University, Xiangtan, 411100, China
| | - Ziyan Du
- School of Environment and Resources, Xiangtan University, Xiangtan, 411100, China
| | - Ke Tian
- School of Environment and Resources, Xiangtan University, Xiangtan, 411100, China.
| | - Junfeng Zhang
- School of Environment and Resources, Xiangtan University, Xiangtan, 411100, China
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31
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Niu Q, Liu M, Fang L, Yu Y, Cheng L, You T. Highly dispersed and stable nano zero-valent iron doped electrospun carbon nanofiber composite for aqueous hexavalent chromium removal. RSC Adv 2022; 12:8178-8187. [PMID: 35424764 PMCID: PMC8982355 DOI: 10.1039/d2ra00193d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/08/2022] [Indexed: 11/21/2022] Open
Abstract
In this work, a nZVI doped electrospun carbon nanofiber (nZVI-CNF) composite was prepared and applied for aqueous hexavalent chromium (Cr(vi)) removal. Firstly, FeCl3/PAN nanofibers were prepared by a simple electrospinning method; Then, nZVI-CNFs were obtained by carbonization of FeCl3/PAN nanofibers at 800 °C. The surface morphology and internal structure of nZVI-CNFs were characterized by SEM and TEM, showing that the uniformly dispersed nZVI particles were well integrated into the carbon layer structure. The Cr(vi) removal efficiency of nZVI-CNFs was 91.5% with a Cr(vi) concentration of 10 mg L−1 and the mechanism was further studied by XRD and XPS. Meanwhile, the nZVI-CNFs exhibited good stability over a wide range of pH values from 4–8 and a long time placement stability. Furthermore, nZVI-CNFs can be used as a filter membrane for continuous treatment of wastewater, suggesting great potential for practical application. Improving the dispersion and stability of nano zero-valent iron (nZVI) is very important for its practical application.![]()
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Affiliation(s)
- Qijian Niu
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Meili Liu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Longyang Fang
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Yangyang Yu
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
| | - Liang Cheng
- School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
- School of Civil and Mechanical Engineering, Curtin University, Perth, 6102, Australia
| | - Tianyan You
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Agricultural Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China
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Zhao R, Wang B, Theng BKG, Wu P, Liu F, Lee X, Chen M, Sun J. Fabrication and environmental applications of metal-containing solid waste/biochar composites: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 799:149295. [PMID: 34388886 DOI: 10.1016/j.scitotenv.2021.149295] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/17/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
The resource utilization of industrial solid waste has become a hot issue worldwide. Composites of biochar with metal-containing solid wastes (MCSWs) can not only improve the adsorption performance, but also reduce the cost of modification and promote the recycling of waste resources. Thus, the synthesis and applications of biochar composites modified by MCSWs have been attracting increasing attention. However, different MCSWs may result in metal-containing solid waste/biochar composites (MCSW-BCs) with various physicochemical properties and adsorption performance, causing distinct adsorption mechanisms and applications. Although a lot of researches have been carried out, it is still in infancy. In particular, the explanation on the adsorption mechanisms and influencing factors of pollutant onto MCSW-BCs are not comprehensive and clear enough. Therefore, a systematic review on fabrication and potential environmental applications of different MCSW-BCs is highly needed. Here we summarize the recent advances on the utilization of typical metal-containing solid wastes, preparation of MCSW-BCs, adsorption mechanisms and influencing factors of pollutants by MCSW-BCs as well as their environmental applications. Finally, comments and perspectives for future studies are proposed.
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Affiliation(s)
- Ruohan Zhao
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China
| | - Bing Wang
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou 550025, China.
| | - Benny K G Theng
- Manaaki Whenua-Landcare Research, Palmerston North, New Zealand
| | - Pan Wu
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou 550025, China
| | - Fang Liu
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou 550025, China
| | - Xinqing Lee
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Miao Chen
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou 550025, China
| | - Jing Sun
- College of Resources and Environment Engineering, Guizhou University, Guiyang, Guizhou 550025, China; Key Laboratory of Karst Georesources and Environment, Ministry of Education, Guiyang, Guizhou 550025, China; Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, Guizhou 550025, China
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Liu Q, Sheng Y, Liu X. Efficacy of in situ active capping Cd highly contaminated sediments with nano-Fe 2O 3 modified biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 290:118134. [PMID: 34523520 DOI: 10.1016/j.envpol.2021.118134] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 09/02/2021] [Accepted: 09/06/2021] [Indexed: 05/09/2023]
Abstract
Effective remediation of Cd polluted sediment is imperative for its potential damages to aquatic ecosystem. Biochar (BC) and nano-Fe2O3 modified BC (nFe2O3@BC) were conducted to remedy Cd highly contaminated sediments, and their performances, applicable conditions, and mechanisms were investigated. After 60 d capping, both BC and nFe2O3@BC capping inhibited Cd release from sediment to overlying water and porewater (reduction rates >99%). The released Cd concentrations in overlying water with nFe2O3@BC capping decreased by 1.6-11.0 times compared to those of BC capping, indicating nFe2O3@BC presented a higher capping efficiency. Notably, the increases of acidity and disturbance intensity of overlying water weakened the capping efficiencies of nFe2O3@BC and BC. BC capping was inappropriate in acidic and neutral waters (pH 3, 5, and 7) because Cd maintained a continuous release after 15 d, while nFe2O3@BC capping was valid in all pH treatments. Under 150 rpm stirring treatment, Cd release rates with BC and nFe2O3@BC capping decreased after 15 d and 30 d, respectively. At 0 and 100 rpm treatments, Cd releases treated by nFe2O3@BC capping finally kept a balance, indicating nFe2O3@BC was valid at low disturbance intensity. BC and nFe2O3@BC capping inhibited Cd release via weakening the influences of pH and disturbance on sediment. However, capping layers should be further processed because most adsorbed Cd in capping layers (>98%) would be re-released into overlying water. Meanwhile, excessive application of nFe2O3@BC could increase the risk of Fe release. The results provide novel insights into the potential applications of nFe2O3@BC and BC in situ capping of Cd polluted sediments in field remediation.
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Affiliation(s)
- Qunqun Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
| | - Yanqing Sheng
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China.
| | - Xiaozhu Liu
- Research Center for Coastal Environment Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China; University of Chinese Academy of Sciences, Beijing, China
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Yang X, Hu L, Bai J, Mao X, Chen X, Wang X, Wang S. Increased structural defects of graphene oxide compromised reductive capacity of ZVI towards hexavalent chromium. CHEMOSPHERE 2021; 277:130308. [PMID: 33774231 DOI: 10.1016/j.chemosphere.2021.130308] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 02/03/2021] [Accepted: 03/14/2021] [Indexed: 06/12/2023]
Abstract
Graphene oxide (GO) was treated with irradiation beams to understand the defective degree of carbon structure of GO in relation to electron transfer property of impregnated zerovalent iron (ZVI). The GO-supported ZVI (ZVI/GO) was synthesized and then characterized by an X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. The results showed that the oxygen-bearing functional groups, oxygen content and structural disorder were increased as a function of irradiation beam intensity. ZVI was dominant in the composites, but proportion of iron oxide increased with greater oxygen content. Batch sorption revealed that Cr(VI) removal decreased from 20.11 g kg-1 to 2.30 g kg-1 as solution pH rose from 3 to 9. Cr(VI) removal capacity was 26.39 g kg-1, 23.12 g kg-1 and 12.35 g kg-1 for ZVI/GO0, ZVI/GO12.3 and ZVI/GO36.9, respectively. The reduction capacity of sorbents followed similar trends as Cr(VI) sorption as per desorption experiment, which accounted for a major Cr(VI) detoxification mechanism by ZVI/GO composites. The electrochemical tests demonstrated that unfavorable electron transfer rate of ZVI/GO composites was aggravated by greater structural disorder of GO. Thus, higher dose of irradiations could create more disorder in graphitic carbon and promote oxidation of ZVI, which hindered Cr(VI) reduction.
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Affiliation(s)
- Xianni Yang
- College of Environmental Science and Engineering & Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225127, PR China
| | - Linlin Hu
- College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Taian, 271018, PR China
| | - Jing Bai
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Xiaoyun Mao
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, Guangdong, China
| | - Xian Chen
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, Guangdong, China
| | - Xiaozhi Wang
- College of Environmental Science and Engineering & Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225127, PR China.
| | - Shengsen Wang
- College of Environmental Science and Engineering & Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou, 225127, PR China; Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
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Tang J, Zhao B, Lyu H, Li D. Development of a novel pyrite/biochar composite (BM-FeS 2@BC) by ball milling for aqueous Cr(VI) removal and its mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125415. [PMID: 33626470 DOI: 10.1016/j.jhazmat.2021.125415] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/27/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
As a natural reduction mineral, pyrite (FeS2), was combined with biochar by simply ball milling technology to synthesize FeS2@biochar composite (BM-FeS2@BC) and applied for the removal of hexavalent chromium (Cr(VI)) in aqueous solution. SEM, XRD, FTIR, and XPS characterization results showed that the FeS2 and biochar were successfully combined and biochar suppressed the agglomeration of FeS2. Batch sorption experiments showed that the BM-FeS2@BC700 composite (mass ratio of FeS2-to-biochar = 3:1) had enhanced Cr(VI) removal capacity of 134 mg·g-1, which were 3-25 times higher than those of the corresponding pristine and ball-milled biochar and FeS2. The removal of Cr(VI) by BM-FeS2@BC700 was dosage and pH dependent. The addition of oxalic acid (OA) exhibited a promotion effect on the removal of Cr(VI) by increasing the removal rate of Cr(VI) from 56% to 100%. Reduction, adsorption, and surface complexation were the dominate mechanisms for Cr(VI) removal by BM-FeS2@BC700. At the equilibrium Cr(VI) concentration of 15.7 mg·L-1, 92.25% of Cr(VI) was removed through reduction/precipitation and 8.75% was removed by adsorption/surface complexation. The fitting results of the Langmuir model proved that the removal of Cr(VI) by BM-FeS2@BC700 composite was chemical surface monolayer adsorption. This work demonstrates the potential of ball milling for the preparation of FeS2@BC composite to remove Cr(VI) from water and wastewater.
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Affiliation(s)
- Jingchun Tang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Beibei Zhao
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Honghong Lyu
- Tianjin Key Laboratory of Clean Energy and pollution control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Ding Li
- BCIG Environmental Remediation Co., Ltd, Tianjin 300042, China
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Xu D, Yang S, Su Y, Xiong Y, Zhang S. Catalytic conversion of plastic wastes using cost-effective bauxite residue as catalyst into H 2-rich syngas and magnetic nanocomposites for chrome(VI) detoxification. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125289. [PMID: 33609876 DOI: 10.1016/j.jhazmat.2021.125289] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 01/19/2021] [Accepted: 01/29/2021] [Indexed: 05/26/2023]
Abstract
Red mud (RM) as bauxite residue from aluminum plant was investigated as cost-effective catalyst for pyrolysis and ex-situ catalytic conversion of plastic wastes into H2-rich syngas and magnetic carbon nanocomposites. The results showed that the introduction of RM catalyst elevated gas yield from 23.8 to 60.3 wt% as a rise of catalytic temperature (700-850 °C), due to its high iron activity for scission of polymer chains. Furthermore, the endothermic nature of cracking reactions of hydrocarbons led to the maximum H2 production of 28.8 mmol gfeed-1 and 63 vol% at 850 °C. The carbon/RM nanocomposites were comprehensively evaluated by multiple characterizations. High-resolution TEM indicated considerable carbon nanotubes(CNTs) depositing on the RM surface that modified iron sites dispersion and diminished nanoparticle size of iron at higher temperature of ≥800 °C. XRD and XPS results confirmed that higher temperature provided carbon components surrounding iron species to form metallic iron. The carbon/RMs were initially applied to chromium(VI) removal in sewage. RM-800 delivered high-profile adsorption capacity of 193.8 mg g-1, mainly attributed to the synergistic effect of chemical reduction by sufficient Fe0 exposure and CNTs growth promoting electrostatic attraction and electron transfer capacity. Furthermore, the correlation mechanism between catalytic temperature and the evolution of products and was discussed.
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Affiliation(s)
- Dan Xu
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Siyuan Yang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Yinhai Su
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
| | - Yuanquan Xiong
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China.
| | - Shuping Zhang
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China; School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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Liu Z, Wang Z, Chen H, Cai T, Liu Z. Hydrochar and pyrochar for sorption of pollutants in wastewater and exhaust gas: A critical review. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 268:115910. [PMID: 33227697 DOI: 10.1016/j.envpol.2020.115910] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 10/03/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
Pollutants in wastewater and exhaust gas bring out serious concerns to public health and the environment. Biochar can be developed as a sustainable adsorbent originating from abundant bio-wastes, such as agricultural waste, forestry residue, food waste and human waste. Here we highlight the state-of-the-art research progress on pyrochar and hydrochar for the sorption of pollutants (heavy metal, organics, gas, etc) in wastewater and exhaust gases. The adsorption performance of pyrochar and hydrochar are compared and discussed in-depth, including preparation procedures (carbonization and activation), sorption possible mechanisms, and physiochemical properties. Challenges and perspective for designing efficient and environmental benign biochar-based adsorbents are finally addressed.
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Affiliation(s)
- Ziyun Liu
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Zihan Wang
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Hongxu Chen
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Tong Cai
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China
| | - Zhidan Liu
- Laboratory of Environment-Enhancing Energy (E2E), And Key Laboratory of Agricultural Engineering in Structure and Environment, Ministry of Agriculture, College of Water Resources and Civil Engineering China Agricultural University, Beijing, 100083, China.
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Enhanced adsorption of Cr(VI) under neutral conditions using a novel adsorbent with preorganized diquaternary ammonium structure. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114905] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Zhao N, Li B, Huang H, Lv X, Zhang M, Cao L. Modification of kelp and sludge biochar by TMT-102 and NaOH for cadmium adsorption. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.10.036] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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