1
|
Chang Y, Meng J, Hu Y, Qi S, Hu Z, Wu G, Zhou J, Zhan X. Unacclimated activated sludge improved nitrate reduction and N 2 selectivity in iron filling/biochar systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 947:174581. [PMID: 38981552 DOI: 10.1016/j.scitotenv.2024.174581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 07/05/2024] [Accepted: 07/05/2024] [Indexed: 07/11/2024]
Abstract
Iron (Fe)-based denitrification is a proven technology for removing nitrate from water, yet challenges such as limited pH preference range and low N2 selectivity (reduction of nitrate to N2) persist. Adding biochar (BC) can improve the pH preference range but not N2 selectivity. This study aimed to improve nitrate reduction and N2 selectivity in iron filling/biochar (Fe/BC) systems with a simplified approach by coupling unacclimated microbes (M) in the system. Factors such as initial pH, Fe/BC ratio, and Fe/BC dosage on nitrate removal efficiency and N2 selectivity were evaluated. Results show that the introduction of microbes significantly enhanced nitrate removal and N2 selectivity, achieving 100 % nitrate removal and 79 % N2 selectivity. The Fe/BC/M system exhibited efficient nitrate reduction at pH of 2-10. Moreover, the Fe/BC/M system demonstrated an improved electrochemical active surface area (ECSA), lower electron transfer resistance and lower corrosion potential, leading to enhanced nitrate reduction. The high i0 value in Fe/BC/M system means more Hads could be generated, thus improving the N2 selectivity. This study provides valuable insights into a novel approach for effective nitrate removal, offering a potential solution to the environmental challenges posed by excessive nitrate in wastewater, surface water and ground water.
Collapse
Affiliation(s)
- Yating Chang
- Civil Engineering, College of Science and Engineering, University of Galway, Ireland; Ryan Institute, University of Galway, Ireland; SFI MaREI Research Centre, University of Galway, Ireland
| | - Jizhong Meng
- Civil Engineering, College of Science and Engineering, University of Galway, Ireland; Ryan Institute, University of Galway, Ireland; SFI MaREI Research Centre, University of Galway, Ireland
| | - Yuansheng Hu
- UCD Dooge Centre for Water Resources Research, School of Civil Engineering, University College Dublin, Ireland
| | - Shasha Qi
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, China
| | - Zhenhu Hu
- Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, China
| | - Guangxue Wu
- Civil Engineering, College of Science and Engineering, University of Galway, Ireland
| | - Jinhong Zhou
- College of Geography and Environment, Baoji University of Arts and Sciences, Baoji, Shaanxi, China
| | - Xinmin Zhan
- Civil Engineering, College of Science and Engineering, University of Galway, Ireland; Ryan Institute, University of Galway, Ireland; SFI MaREI Research Centre, University of Galway, Ireland.
| |
Collapse
|
2
|
Wang X, Zheng Y, Ning P, Lynch I, Guo Z, Zhang P, Wu L. Synergetic effect of green synthesized NZVI@Chitin-modified ZSM-5 for efficient oxidative degradation of tetracycline. ENVIRONMENTAL RESEARCH 2024; 258:119360. [PMID: 38852830 DOI: 10.1016/j.envres.2024.119360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/11/2024]
Abstract
The aggregation and limited activity of nanoscale zero-valent iron (NZVI) in aqueous media hinder its practical application. In this study, a cost-effective, environmentally friendly, robust, and efficient synthesis method for NZVI-based composite was developed. NZVI@Chitin-modified ZSM-5 (NZVI@C-ZSM) composite was facilely and greenly synthesized by loading NZVI into alkali-modified ZSM-5 molecular sieves after modifying with chitin as a surfactant and binder. NZVI@C-ZSM exhibited remarkable efficacy in TC removal, achieving a removal efficiency of 97.72% within 60 min. Compared with pristine NZVI, NZVI@C-ZSM demonstrated twice the removal efficiency, indicating that NZVI@C-ZSM effectively improved the dispersion and stability of NZVI. This enhancement provided more reactive sites for generating reactive oxygen species (ROS), significantly boosting catalytic activity and durability while reducing the potential risk of secondary pollution. An improved two-parameter pseudo-first-order kinetic model was used to effectively characterize the reaction kinetics. The mechanism for TC removal primarily involved an adsorption process and chemical oxidation-reduction reactions induced by hydroxyl radicals (•OH) and superoxide radicals (•O2-). Three potential degradation pathways for TC were suggested. Furthermore, NZVI@C-ZSM exhibited good resistance to interference, suggesting its broad potential for practical applications in complex environmental conditions. This study offers a viable material and method for addressing the issue of antibiotic-contaminated water, with potential applications in water resource management.
Collapse
Affiliation(s)
- Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Yimin Zheng
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Iseult Lynch
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Zhiling Guo
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Peng Zhang
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Lisi Wu
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| |
Collapse
|
3
|
Zhang X, Zhao Y, Wang Y, Qian H, Xing J, Joseph A, Rene ER, Li J, Zhu N. The interplay of hematite and photic biofilm triggers the acceleration of biotic nitrate removal. CHEMOSPHERE 2024; 358:142136. [PMID: 38692363 DOI: 10.1016/j.chemosphere.2024.142136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/03/2024]
Abstract
The soil-water interface is replete with photic biofilm and iron minerals; however, the potential of how iron minerals promote biotic nitrate removal is still unknown. This study investigates the physiological and ecological responses of photic biofilm to hematite (Fe2O3), in order to explore a practically feasible approach for in-situ nitrate removal. The nitrate removal by photic biofilm was significantly higher in the presence of Fe2O3 (92.5%) compared to the control (82.8%). Results show that the presence of Fe2O3 changed the microbial community composition of the photic biofilm, facilitates the thriving of Magnetospirillum and Pseudomonas, and promotes the growth of photic biofilm represented by the extracellular polymeric substance (EPS) and the content of chlorophyll. The presence of Fe2O3 also induces oxidative stress (•O2-) in the photic biofilm, which was demonstrated by electron spin resonance spectrometry. However, the photic biofilm could improve the EPS productivity to prevent the entrance of Fe2O3 to cells in the biofilm matrix and mitigate oxidative stress. The Fe2O3 then promoted the relative abundance of Magnetospirillum and Pseudomonas and the activity of nitrate reductase, which accelerates nitrate reduction by the photic biofilm. This study provides an insight into the interaction between iron minerals and photic biofilm and demonstrates the possibility of combining biotic and abiotic methods to improve the in-situ nitrate removal rate.
Collapse
Affiliation(s)
- Xiguo Zhang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Yanhui Zhao
- Changjiang Basin Ecology and Environment Monitoring and Scientific Research Center, Changjiang Basin Ecology and Environment Administration, Ministry of Ecology and Environment, Wuhan, 430010, China
| | - Yimin Wang
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Haoliang Qian
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Jun Xing
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Akaninyene Joseph
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2611AX, Delft, the Netherlands
| | - Jizhou Li
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China
| | - Ningyuan Zhu
- Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing, 210098, China; Institute of Soil Sciences, Chinese Academy of Sciences, 71 East Beijing Road, 210008, China.
| |
Collapse
|
4
|
Zhao J, Qin Y, Liu Y, Shi Y, Lin Q, Cai M, Jia Z, Yu C, Shang A, Fei Y, Zhang J. Cobalt/Iron Bimetallic Biochar Composites for Lead(II) Adsorption: Mechanism and Remediation Performance. Molecules 2024; 29:1595. [PMID: 38611873 PMCID: PMC11013323 DOI: 10.3390/molecules29071595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/18/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
The performance of nano-zero-valent iron for heavy metal remediation can be enhanced via incorporation into bimetallic carbon composites. However, few economical and green approaches are available for preparing bimetallic composite materials. In this study, novel Co/Fe bimetallic biochar composites (BC@Co/Fe-X, where X = 5 or 10 represents the CoCl2 concentration of 0.05 or 0.1 mol L-1) were prepared for the adsorption of Pb2+. The effect of the concentration of cross-linked metal ions on Pb2+ adsorption was investigated, with the composite prepared using 0.05 mol L-1 Co2+ (BC@Co/Fe-5) exhibiting the highest adsorption performance. Various factors, including the adsorption period, Pb2+ concentration, and pH, affected the adsorption of Pb2+ by BC@Co/Fe-5. Further characterisation of BC@Co/Fe-5 before and after Pb2+ adsorption using methods such as X-ray diffraction and X-ray photoelectron spectroscopy suggested that the Pb2+ adsorption mechanism involved (i) Pb2+ reduction to Pb0 by Co/Fe, (ii) Co/Fe corrosion to generate Fe2+ and fix Pb2+ in the form of PbO, and (iii) Pb2+ adsorption by Co/Fe biochar. Notably, BC@Co/Fe-5 exhibited excellent remediation performance in simulated Pb2+-contaminated water and soil with good recyclability.
Collapse
Affiliation(s)
- Jingyu Zhao
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Yuhong Qin
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Yue Liu
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Yunlong Shi
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Qiang Lin
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Miao Cai
- Hainan Pujin Environmental Technology Co., Ltd., Haikou 570125, China
| | - Zhenya Jia
- Hainan Huantai Environmental Resources Co., Ltd., Haikou 571158, China
| | - Changjiang Yu
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Anqi Shang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Yuxiao Fei
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| | - Jiayi Zhang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou 571158, China
| |
Collapse
|
5
|
Ding D, Zhao Y, Chen Y, Xu C, Fan X, Tu Y, Zhao D. Recent advances in bimetallic nanoscale zero-valent iron composite for water decontamination: Synthesis, modification and mechanisms. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 353:120187. [PMID: 38310792 DOI: 10.1016/j.jenvman.2024.120187] [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: 09/18/2023] [Revised: 12/08/2023] [Accepted: 01/20/2024] [Indexed: 02/06/2024]
Abstract
The environmental pollution of water is one of the problems that have plagued human society. The bimetallic nanoscale zero-valent iron (BnZVI) technology has increased wide attention owing to its high performance for water treatment and soil remediation. In recent years, the BnZVI technology based on the development of nZVI has been further developed. The material chemistry, synthesis methods, and immobilization or surface stabilization of bimetals are discussed. Further, the data of BnZVI (Fe/Ni, Fe/Cu, Fe/Pd) articles that have been studied more frequently in the last decade are summarized in terms of the types of contaminants and the number of research literatures on the same contaminants. Five contaminants including trichloroethylene (TCE), Decabromodi-phenyl Ether (BDE209), chromium (Cr(VI)), nitrate and 2,4-dichlorophenol (2,4-DCP) were selected for in-depth discussion on their influencing factors and removal or degradation mechanisms. Herein, comprehensive views towards mechanisms of BnZVI applications including adsorption, hydrodehalogenation and reduction are provided. Particularly, some ambiguous concepts about formation of micro progenitor cell, production of hydrogen radicals (H·) and H2 and the electron transfer are highlighted. Besides, in-depth discussion of selectivity for N2 from nitrates and co-precipitation of chromium are emphasized. The difference of BnZVI is also discussed.
Collapse
Affiliation(s)
- Dahai Ding
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Yuanyuan Zhao
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Yan Chen
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Chaonan Xu
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Xudong Fan
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Yingying Tu
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| | - Donglin Zhao
- Key Laboratory of and Functional Molecule Design and Interface Process, Anhui Jianzhu University, Hefei 230601, PR China.
| |
Collapse
|
6
|
Pei Y, Cheng W, Liu R, Di H, Jiang Y, Zheng C, Jiang Z. Synergistic effect and mechanism of nZVI/LDH composites adsorption coupled reduction of nitrate in micro-polluted water. JOURNAL OF HAZARDOUS MATERIALS 2024; 464:133023. [PMID: 37988940 DOI: 10.1016/j.jhazmat.2023.133023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/13/2023] [Accepted: 11/14/2023] [Indexed: 11/23/2023]
Abstract
In this study, nZVI/LDH composites were prepared by loading nano zero-valent iron (nZVI) on layered double hydroxide (LDH) surface for adsorption coupled reduction of nitrate (NO3--N). The results showed that the removal of NO3--N and total nitrogen (TN) by the nZVI/LDH composites was 88.64% and 77.63%, respectively, with a selectivity of 55.21% for N2 and only 1.86% for ammonia nitrogen (NH4+-N) within 180 min. The valence states of various N forms during the adsorption-reduction process were investigated. The mechanism of synergistic adsorption-reduction degradation of NO3--N was proposed by measuring the contents of NO3--N, nitrite (NO2--N), and NH4+-N in the aqueous and adsorbed phases in the reaction process, including rapid adsorption of initial NO3--N, chemical reduction of adsorbed NO3--N and resorption of the final product. The nZVI/LDH also maintained up to 82.56% NO3--N removal in natural water, with aging experiments proved that the composites maintained 60.48% NO3--N removal after 15 days. Therefore, the composites may have great application prospects for NO3--N removal in micro-polluted water.
Collapse
Affiliation(s)
- Yanyan Pei
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China; Construction & Development Co., Ltd. of China Construction Fourth Bureau, Xiamen, Fujian 361006, China
| | - Wei Cheng
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Renyu Liu
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Hongcheng Di
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Yachen Jiang
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Chaoqun Zheng
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China
| | - Zhuwu Jiang
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian 350118, China.
| |
Collapse
|
7
|
Zeng G, He Y, Wang F, Luo H, Liang D, Wang J, Huang J, Yu C, Jin L, Sun D. Toxicity of Nanoscale Zero-Valent Iron to Soil Microorganisms and Related Defense Mechanisms: A Review. TOXICS 2023; 11:514. [PMID: 37368614 DOI: 10.3390/toxics11060514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/11/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023]
Abstract
Soil pollution is a global environmental problem. Nanoscale zero-valent iron (nZVI) as a kind of emerging remedial material is used for contaminated soil, which can quickly and effectively degrade and remove pollutants such as organic halides, nitrates and heavy metals in soil, respectively. However, nZVI and its composites can enter the soil environment in the application process, affect the physical and chemical properties of the soil, be absorbed by microorganisms and affect the growth and metabolism of microorganisms, thus affecting the ecological environment of the entire soil. Because of the potential risks of nZVI to the environment and ecosystems, this paper summarizes the current application of nZVI in the remediation of contaminated soil environments, summarizes the various factors affecting the toxic effects of nZVI particles and comprehensively analyzes the toxic effects of nZVI on microorganisms, toxic mechanisms and cell defense behaviors to provide a theoretical reference for subsequent biosafety research on nZVI.
Collapse
Grants
- 52103156,51901160 National Natural Science Foundation of China
- cstc2021jcyjmsxmX0663 Chongqing Science and Technology Commission Project
- CSTB2022NSCQ-MSX1145, cstc2021jcyjmsxmX0901, cstc2021jcyj-msxmX0559, CSTB2022BSXM-JCX0149, cstc2018jscx-zdyfxmX0001 Natural Science Foundation of Chongqing, China
- KJQN202001530, KJQN202103905, KJQN202101526, KJQN202103902 the Scientific and Technological Research Program of Chongqing Municipal Education Commis-sion
- YS2021089 Chongqing Bayu Scholars Young Scholars Project
- 2021198, 202211551007 College Students Innovation Training Program
- shljzyh2021-09 Provincial and Ministerial Co-constructive of Collaborative Innovation Center for MSW Compre-hensive Utilization
- YKJCX2220602 Postgraduate Innovation Program of Chongqing University of Science and Technology
Collapse
Affiliation(s)
- Guoming Zeng
- School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
- Intelligent Construction Technology Application Service Center, Chongqing City Vocational College, Chongqing 402160, China
| | - Yu He
- School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Fei Wang
- School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Heng Luo
- Geological Research Institute of No. 9 Oil Production Plant of CNPC Changqing Oilfield, Yinchuan 750006, China
| | - Dong Liang
- School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Jian Wang
- Chongqing Yubei District Ecological Environment Monitoring Station, Chongqing 401124, China
| | - Jiansheng Huang
- School of Architecture and Engineering, Chongqing University of Science and Technology, Chongqing 401331, China
| | - Chunyi Yu
- Department of Construction Management and Real Estate, Chongqing Jianzhu College, Chongqing 400072, China
| | - Libo Jin
- National & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Institute of Life Sciences, Biomedical Collaborative Innovation Center of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| | - Da Sun
- National & Local Joint Engineering Research Center for Ecological Treatment Technology of Urban Water Pollution, Zhejiang Provincial Key Laboratory for Water Environment and Marine Biological Resources Protection, Institute of Life Sciences, Biomedical Collaborative Innovation Center of Zhejiang Province, Wenzhou University, Wenzhou 325035, China
| |
Collapse
|
8
|
Yuan S, Xue Y, Ma R, Ma Q, Chen Y, Fan J. Advances in iron-based electrocatalysts for nitrate reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 866:161444. [PMID: 36621470 DOI: 10.1016/j.scitotenv.2023.161444] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/26/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
Excessive nitrate has been a critical issue in the water environment, originating from the burning of fossil fuels, inefficient use of nitrogen fertilizers, and discharge of domestic and industrial wastewater. Among the effective treatments for nitrate reduction, electrocatalysis has become an advanced technique because it uses electrons as green reducing agents and can achieve high selectivity through cathode potential control. The effectiveness of electrocatalytic nitrate reduction (NO3RR) mainly lies in the electrocatalyst. Iron-based catalysts have the advantages of high activity and low cost, which are well-used in the field of electrocatalytic nitrates. A comprehensive overview of the electrocatalytic mechanism and the iron-based materials for NO3RR are given in terms of monometallic iron-based materials as well as bimetallic and oxide iron-based materials. A detailed introduction to NO3RR on zero valent iron, single-atom iron catalysts, and Cu/Fe-based bimetallic electrocatalysts are provided, as they are essential for the improvement of NO3RR performance. Finally, the advantages of iron-based materials for NO3RR and the problems in current applications are summarized, and the development prospects of efficient iron-based catalysts are proposed.
Collapse
Affiliation(s)
- Shiyin Yuan
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yinghao Xue
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Raner Ma
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Qian Ma
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanyan Chen
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Jianwei Fan
- State key laboratory of pollution control and Resource reuse, College of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
| |
Collapse
|
9
|
Hosseini Nami S, Mousavi SB. Nitrate Removal Performance of Different Granular Adsorbents Using a Novel Fe-Exchanged Nanoporous Clinoptilolite. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c03308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Shamin Hosseini Nami
- School of Chemical, Biological and Materials Engineering, The University of Oklahoma, Norman, Oklahoma 73019, United States
| | - Seyed Borhan Mousavi
- J. Mike Walker ’66 Mechanical Engineering Department, Texas A&M University, College Station, Texas 77843, United States
| |
Collapse
|
10
|
Chen Z, Cao W, Bai H, Zhang R, Liu Y, Li Y, Song J, Liu J, Ren G. Review on the degradation of chlorinated hydrocarbons by persulfate activated with zero-valent iron-based materials. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2023; 87:761-782. [PMID: 36789716 DOI: 10.2166/wst.2023.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Chlorinated hydrocarbons (CHCs) are often used in industrial processes, and they have been found in groundwater with increasing frequency in recent years. Several typical CHCs, including trichloroethylene (TCE), 1,1,1-trichloroethane (TCA), carbon tetrachloride (CT), etc., have strong cytotoxicity and carcinogenicity, posing a serious threat to human health and ecological environment. Advanced persulfate (PS) oxidation technology based on nano zero-valent iron (nZVI) has become a research hotspot for CHCs degradation in recent years. However, nZVI is easily oxidized to form the surface passivation layer and prone to aggregation in practical application, which significantly reduces the activation efficiency of PS. In order to solve this problem, various nZVI modification solutions have been proposed. This review systematically summarizes four commonly used modification methods of nZVI, and the theoretical mechanisms of PS activated by primitive and modified nZVI. Besides, the influencing factors in the engineering application process are discussed. In addition, the controversial views on which of the two (SO4·- and ·OH) is dominant in the nZVI/PS system are summarized. Generally, SO4·- predominates in acidic conditions while ·OH prefers neutral and alkaline environments. Finally, challenges and prospects for practical application of CHCs removal by nZVI-based materials activating PS are also analyzed.
Collapse
Affiliation(s)
- Zhiguo Chen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Wenqing Cao
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - He Bai
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Rong Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China; Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Yiyun Liu
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Yan Li
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Jingpeng Song
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Juncheng Liu
- Tianjin Huakan Environmental Protection Technology Co., Ltd, Tianjin 300170, China
| | - Gengbo Ren
- School of Energy and Environment Engineering, Hebei University of Technology, Tianjin 300401, China
| |
Collapse
|
11
|
Patra S, Pranudta A, Chanlek N, Nguyen TT, Nhat NH, El-Moselhy MM, Padungthon S. Denitrification of nitrate in regeneration waste brine using hybrid cation exchanger supported nanoscale zero-valent iron with/without palladium nanoparticles. CHEMOSPHERE 2023; 310:136851. [PMID: 36244425 DOI: 10.1016/j.chemosphere.2022.136851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/06/2022] [Accepted: 10/08/2022] [Indexed: 06/16/2023]
Abstract
The Sustainable Development Goals require that reducing waste is a priority. This work described the application of an innovative zero-waste hybrid ion exchange nanotechnology that concurrently removed nitrate and induced denitrification to ammonia, with the ability to generate fertilizer for the agriculture sector from the recycled by-products. Herein, hybrid cation exchanger-supported zero-valent iron (Fe0), and bimetallic Fe0/Pd nanoparticles (HCIX-Fe0 and HCIX-Fe0/Pd) were synthesized and successfully validated for denitrification of nitrate in spent waste brine that contained nitrate. The kinetics of nitrate catalysis by both HCIX-Fe0 and HCIX-Fe0/Pd were compared and presented by six kinetic models, namely, zero-order, pseudo first- and second-order reaction, pseudo first- and second-order adsorption, and Elovich. HCIX-Fe0/Pd displayed a higher kinetic value than HCIX-Fe0, with k1 of 0.0019 and 0.0026 min-1, respectively. Nitrate was predominantly catalysed to NH4+ at a ratio of ammonia to other nitrogen compounds of around 80:20. Although HCIX-Fe0/Pd showed slightly better (14%) kinetic results, it was determined as unfavourable for real-life application due to low selectivity toward N2 gas and the need to use H2 gas. Based on practicability, the HCIX-Fe0 was further validated. The effect of salt (using NaCl) and the role of initial pH conditions were optimized and discussed. The recovery of nitrate removal was also calculated, and a recovery range of 91.42-99.14% was obtained for three consecutive runs. The sustainable, novel, zero waste hybrid ion exchange nanotechnology using the combination of two fixed-bed columns containing nitrate-selective resin for nitrate removal and novel HCIX-Fe0 for nitrate reduction to NH4+ may be a promising sustainable solution toward the goal of discharging zero nitrate waste to the environment.
Collapse
Affiliation(s)
- Santanu Patra
- Advanced Functional Nanomaterials & Membrane for Environmental Remediation (AFMER) Research Unit, Khon Kaen University, Khon Kaen, Thailand; Environmental Engineering Program, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand
| | - Antika Pranudta
- Advanced Functional Nanomaterials & Membrane for Environmental Remediation (AFMER) Research Unit, Khon Kaen University, Khon Kaen, Thailand; Environmental Engineering Program, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand
| | - Narong Chanlek
- Synchrotron Light Research Institute, Nakhon Ratchasima, Thailand
| | - Trung Thanh Nguyen
- Faculty of Technology, Engineering, and Environment, An Giang University, Long Xuyen City, Viet Nam
| | - Nguyen Hong Nhat
- Faculty of Technology, Engineering, and Environment, An Giang University, Long Xuyen City, Viet Nam
| | | | - Surapol Padungthon
- Advanced Functional Nanomaterials & Membrane for Environmental Remediation (AFMER) Research Unit, Khon Kaen University, Khon Kaen, Thailand; Environmental Engineering Program, Faculty of Engineering, Khon Kaen University, Khon Kaen, Thailand.
| |
Collapse
|
12
|
Rapid and effective nitrate reduction over wide pH range using CuxO-CNT with the presence of KBH4: The role of in situ produced hydrogen and zero-valent copper. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
13
|
Xing W, Xu X, Zhang M, Zhang X, Shi Y, Nie P, Ju Y. Synthesis of Ag-Cu co-doping sponge iron-based trimetal for boosting simultaneous degradation of combined pollutants. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129413. [PMID: 35816804 DOI: 10.1016/j.jhazmat.2022.129413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/07/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
To date, zero-valent iron (ZVI)-based technique has encountered a baffle, challenging simultaneous detoxification of refractory rhodamine B (RhB) and p-nitrophenol (PNP) possessing strong electronwithdrawing nitro-group. In this study, we synthesized Ag-Cu decorated sponge iron (s-Fe0)-based trimetal for simultaneous degradation of RhB and PNP. The results show that Cu-Ag co-doping s-Fe0 (s-Fe0-(Cu-Ag)) achieves approx. 90.6 % of maximized removal of RhB; the preferred s-Fe0-(5 wt%Cu-1 wt%Ag) assisted with 6 L/min aeration rate simultaneously declines RhB and PNP within 10 recycling tests; non-aeration process obtains a complete reduction of PNP as well as merely approx. 23.9 % removal of RhB. Moreover, the Cu-Ag microstructure covering s-Fe0-(Cu-Ag) has been characterized in detail. Furthermore, the electron spin resonance (ESR) spectra have been applied to investigate simultaneous generation of reactive oxygen species (ROSs) and hydrogen radicals ([H]abs) over s-Fe0-(Cu-Ag). To our best knowledge, this is the first study reporting the enhanced bifunctional catalysis of s-Fe0-(Cu-Ag)/O2 for simultaneous degradation of RhB and PNP.
Collapse
Affiliation(s)
- Weilong Xing
- Laboratory of Pesticide Environmental Assessment and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Nanjing 210042, PR China
| | - Xingyu Xu
- The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou 510655, PR China
| | - Manwen Zhang
- The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou 510655, PR China
| | - Xiaofei Zhang
- Laboratory of Pesticide Environmental Assessment and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Nanjing 210042, PR China
| | - Yongquan Shi
- Laboratory of Pesticide Environmental Assessment and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Nanjing 210042, PR China
| | - Peng Nie
- The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou 510655, PR China
| | - Yongming Ju
- Laboratory of Pesticide Environmental Assessment and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Nanjing 210042, PR China; The Key Laboratory of Water and Air Pollution Control of Guangdong Province, South China Institute of Environmental Sciences, Ministry of Ecology and Environment (MEE), Guangzhou 510655, PR China.
| |
Collapse
|
14
|
Sanchis I, Diaz E, Pizarro A, Rodriguez J, Mohedano A. Nitrate reduction with bimetallic catalysts. A stability-addressed overview. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120750] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
|
15
|
Abstract
Nitrate is a widespread water contaminant that can pose environmental and health risks. Various conventional techniques can be applied for the removal of nitrate from water and wastewater, such as biological denitrification, ion exchange, nanofiltration, and reverse osmosis. Compared to traditional methods, the chemical denitrification through zero-valent metals offers various advantages, such as lower costs, simplicity of management, and high efficiencies. The most utilized material for chemical denitrification is zero-valent iron (ZVI). Aluminium (ZVA), magnesium (ZVM), copper (ZVC), and zinc (ZVZ) are alternative zero-valent metals that are studied for the removal of nitrate from water as well as from aqueous solutions. To the best of our knowledge, a comprehensive work on the use of the various zero-valent materials that are employed for the removal of nitrate is still missing. Therefore, in the present review, the most recent papers concerning the use of zero-valent materials for chemical denitrification were analysed. The studies that dealt with zero-valent iron were discussed by considering microscopic (mZVI) and nanoscopic (nZVI) forms. For each Fe0 form, the effects of the initial pH, the presence or absence of dissolved oxygen, the initial nitrate concentration, the temperature, and the dissolved ions on the nitrate removal process were separately evaluated. Finally, the different materials that were employed as support for the nanoparticles were examined. For the other zero-valent metals tested, a detailed description of the works present in the literature was carried out. A comparison of the various features that are related to each considered material was also made.
Collapse
|
16
|
Effective and selective conversion of nitrate from aqueous solutions to nitrogen gas under neutral pH condition using Al/Cu bimetal-sulfamic acid reduction method. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Bishayee B, Chatterjee RP, Ruj B, Chakrabortty S, Nayak J. Strategic management of nitrate pollution from contaminated water using viable adsorbents: An economic assessment-based review with possible policy suggestions. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 303:114081. [PMID: 34823908 DOI: 10.1016/j.jenvman.2021.114081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/22/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
Groundwater contaminated with nitrate has prompted a flurry of research studies around the world in the recent years to address this burning environmental issue. The common presence of nitrates in groundwater, wastewater, and surface waters has thrown an enormously critical challenge to the global research communities to provide safe and clean drinking water to municipalities. As per WHO, the maximum permissible limit of nitrate in drinking water is 10 mg/L and in groundwater is 50 mg/L; exceeding the limits, several human health problems are observed. Adsorption, ion-exchange processes, membrane-based approaches, electrochemical and chemical procedures, biological methods, filtration, nanoparticles, etc. have been well investigated and reviewed to reduce nitrate levels in water samples in the recent years. Process conditions, as well as the efficacy of various approaches, were discovered to influence different techniques for nitrate mitigation. But, because of low cost, simple operation, easy handling, and high removal effectiveness, adsorption has been found to be the most suitable and efficient approach. The main objectives of this review primarily focuses on the creation of a naturally abundant, cost-effective innovative abundant material, such as activated clay particles combined with iron oxide. Oxide-clay nanocomposite materials, effectively remove nitrate with higher removal efficiency along with recovery of nitrate concentrated sludge. Such methods stand out as flexible and economic ways for capturing stabilized nitrate in solid matrices to satisfy long-term operations. A techno-economic assessment along with suitable policy suggestions have been reported to justify the viability of the brighter processes. Indeed, this kind of analytical review appears ideal for municipal community recommendations on abatement of excess nitrate to supply of clean water.
Collapse
Affiliation(s)
- Bhaskar Bishayee
- Environmental Engineering Group, CSIR-Central Mechanical Engineering Research Institute, Durgapur, 713209, India
| | - Rishya Prava Chatterjee
- Environmental Engineering Group, CSIR-Central Mechanical Engineering Research Institute, Durgapur, 713209, India
| | - Biswajit Ruj
- Environmental Engineering Group, CSIR-Central Mechanical Engineering Research Institute, Durgapur, 713209, India.
| | - Sankha Chakrabortty
- School of Chemical Technology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India.
| | - Jayato Nayak
- Department of Chemical Engineering, Kalasalingam Academy of Research and Education, Tamilnadu, 626126, India.
| |
Collapse
|
18
|
Zhao F, Xin J, Yuan M, Wang L, Wang X. A critical review of existing mechanisms and strategies to enhance N 2 selectivity in groundwater nitrate reduction. WATER RESEARCH 2022; 209:117889. [PMID: 34936974 DOI: 10.1016/j.watres.2021.117889] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 11/02/2021] [Accepted: 11/19/2021] [Indexed: 06/14/2023]
Abstract
The pollution of nitrate (NO3-) in groundwater has become an environmental problem of general concern and requires immediate remediation because of adverse human and ecological impacts. NO3- removal from groundwater is conducted mainly by chemical, biological, and coupled methods, with the removal efficiency of NO3- considered the sole performance indicator. However, in addition to the harmless form of N2, the reduced NO3- could be transformed into other intermediates, such as nitrite (NO2-), nitrous oxide (N2O), and ammonia (NH4+), which may have direct or indirect negative impacts on the environment. Therefore, increasing N2 selectivity is a significant challenge in reducing NO3- in groundwater, which seriously impedes the large-scale implementation of available remediation technologies. In this work, we comprehensively overview the most recent advances in N2 selectivity regarding the understanding of emerging groundwater NO3- removal technologies. Mechanisms of by-product production and strategies to enhance the selective reduction of NO3- to N2 are discussed in detail. Furthermore, we proposed topics for further research and hope that the total environmental impacts of remediation schemes should be evaluated comprehensively by quantifying all potential intermediate products, and promising strategies should be further developed to enhance N2 selectivity, to improve the feasibility of related technologies in actual remediation.
Collapse
Affiliation(s)
- Fang Zhao
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Jia Xin
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Mengjiao Yuan
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Litao Wang
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Xiaohui Wang
- Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| |
Collapse
|
19
|
Long Y, Liang J, Xue Y. Ultrasound-assisted electrodeposition synthesis of nZVI-Pd/AC toward reductive degradation of methylene blue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:67098-67107. [PMID: 34244938 DOI: 10.1007/s11356-021-15316-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 07/01/2021] [Indexed: 06/13/2023]
Abstract
A novel composite (nZVI/Pd-AC) was prepared by loading nanoscale zero-valent iron (nZVI) and Pd on activated carbon (AC) electrode under electrodeposition with ultrasound, which was used to reductive degradation of methylene blue (MB). The loading contents of Fe and Pd in composite materials were 15.84% and 2.06%, respectively. XPS results further confirmed that the as-prepared material contained Fe0 and Pd0. Without external conditions, MB could be degraded in the presence of nZVI/Pd-AC and reached equilibrium within 180 min. To investigate the reusability, the re-electrodeposition strategy was effective to refresh the active sites of nZVI/Pd-AC, and the removal efficiency only reduced by 4.51% in five circles indicating the good reusability of nZVI/Pd-AC composites. GC-MS was used to identify possible degradation pathways of MB; the results showed that the degradation products were mainly N, N-dimethylaniline and 2-amino-5-dimethylamino-benzenesulfonic acid. And the S-C, C-N bonds are the sites easier to be attacked.
Collapse
Affiliation(s)
- Yingtao Long
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
- Chongqing Municipal Institute of Municipal Design and Research Co., Ltd., Chongqing, 400020, China
| | - Jianjun Liang
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China.
| | - Yinghao Xue
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment (Ministry of Education), Chongqing University, Chongqing, 400045, China
| |
Collapse
|
20
|
Hou W, Wang S, Li Y, Hao Z, Zhang Y, Kong F. Influence of modified biochar supported Fe-Cu/polyvinylpyrrolidone on nitrate removal and high selectivity towards nitrogen in constructed wetlands. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 289:117812. [PMID: 34333269 DOI: 10.1016/j.envpol.2021.117812] [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: 03/09/2021] [Revised: 07/05/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
In this study, the biochar (BC) supported Fe-Cu bimetallic stabilized by PVP (Fe-Cu/PVP/BC) were prepared and utilized to enhance the nitrate (NO3-) removal and the selectivity toward nitrogen (N2). Results showed the optimum Fe:Cu:BC ratio and the dosage of the BC (pyrolysis at 700 °C) supported Fe-Cu bimetallic stabilized by polyvinylpyrrolidone (PVP) (Fe-Cu/PVP/BC700) were respectively 1:2:3 and 1 mg L-1 with the selectivity toward N2 of 31 %. This was mainly due to the synergy among Fe0, Cu0 and BC in the Fe-Cu/PVP/BC. The addition of Fe0 could reduce the NO3- through providing electron. The Cu0 and BC improved the selectivity of NO3- to N2 through forming [Cu-NO2-ads] and adjusting redox potential. The addition of Fe-Cu/PVP/BC could supply electrons for denitrification and enhance the relative abundances of Azospira and Thauera related to denitrification to improve NO3- removal. This result was further confirmed by the variations of denitrifying functional genes (narG, nirK, nirS and nosZ). This research provided an effective method to improve NO3- removal during surface water treatment in constructed wetlands (CWs) by adding Fe-Cu/PVP/BC.
Collapse
Affiliation(s)
- Weihao Hou
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China
| | - Sen Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China
| | - Yue Li
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China
| | - Ziran Hao
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China
| | - Yi Zhang
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China
| | - Fanlong Kong
- College of Environmental Science and Engineering, Qingdao University, Qingdao, China.
| |
Collapse
|
21
|
Li Q, Chen Z, Wang H, Yang H, Wen T, Wang S, Hu B, Wang X. Removal of organic compounds by nanoscale zero-valent iron and its composites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 792:148546. [PMID: 34465057 DOI: 10.1016/j.scitotenv.2021.148546] [Citation(s) in RCA: 131] [Impact Index Per Article: 43.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 05/30/2021] [Accepted: 06/15/2021] [Indexed: 05/07/2023]
Abstract
During the latest several decades, the continuous development of the economy and industry has brought more and more serious organic pollutants to the natural environment, which have inevitably aroused severe menace to human health and the environmental system. The nano zero-valent iron (NZVI) particles and NZVI-based materials have widely applied to remove organic pollutants. This article reviews the key advancements of different methods for the synthesis of NZVI and NZVI-based materials. Different modification methods (e.g., doped NZVI, encapsulated NZVI and supported NZVI) are also introduced detailedly for overcoming the defects of NZVI such as aggregation and easy oxidation. The removal of different organic pollutants including dyes, halogenated organic compounds, nitro-organic compounds, phenolic compounds, pesticides, and antibiotics are summarized. The interaction mechanisms, including adsorption, reduction, and active oxidation of organic pollutants by NZVI/NZVI-based composites, are discussed. The dyes are mainly removed by destroying their chromogenic group according to the reduction or the Fenton-like reaction with NZVI. The removal of halogenated organic compounds (HOCs) is realized by the dehalogenation process, including reductive elimination, hydrogenolysis, and hydrogenation. As for the nitro-organic compounds, three different reduction pathways as nitro-reduction (into amino), cleavage at the carbon‑nitrogen bond or denitration of the NO2 group may take effect. The phenolic compounds can be mineralized into inorganic molecules, including CO2 and H2O, by Fenton oxidation. This review might provide the basis for future studies on developing more effective NZVI-based materials for the treatment of wastewaters contaminated by organic pollutants.
Collapse
Affiliation(s)
- Qian Li
- School of Life Science, Shaoxing University, Shaoxing 312000, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Zhongshan Chen
- School of Life Science, Shaoxing University, Shaoxing 312000, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| | - Huihui Wang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Hui Yang
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Tao Wen
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Shuqin Wang
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Baowei Hu
- School of Life Science, Shaoxing University, Shaoxing 312000, China.
| | - Xiangke Wang
- School of Life Science, Shaoxing University, Shaoxing 312000, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
| |
Collapse
|
22
|
Lee HK, Yoo DH, Jo SE, Choi SJ. Removal of nitrate from radioactive wastewater using magnetic multi-walled carbon nanotubes. PROGRESS IN NUCLEAR ENERGY 2021. [DOI: 10.1016/j.pnucene.2021.103893] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
23
|
Enhanced photocatalytic performance under solar radiation of ZnO through hetero-junction with iron functionalized zeolite. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113373] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
24
|
Amoako-Nimako GK, Yang X, Chen F. Denitrification using permeable reactive barriers with organic substrate or zero-valent iron fillers: controlling mechanisms, challenges, and future perspectives. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:21045-21064. [PMID: 33728604 DOI: 10.1007/s11356-021-13260-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 03/01/2021] [Indexed: 06/12/2023]
Abstract
Nitrate as a diffusive agricultural contaminant has been causing substantial groundwater quality deterioration worldwide. In situ groundwater remediation techniques using permeable reactive barriers (PRBs) have attracted increasing interest. Particularly, PRBs based on biological denitrification, using the organic substrate as a biostimulator, and chemical nitrate reduction, using zero-valent iron (ZVI) as a reductant, are two major PRB approaches for groundwater denitrification. This review paper analyzed the published studies over the past 10 years (2010-2020) using laboratory, modeling, and field-scale approaches to explore the performance and mechanisms of these two types of PRBs. Important factors affecting the denitrification efficiencies as well as the influential mechanisms were discussed. Several research gaps have been identified and further research needs are discussed in the end.
Collapse
Affiliation(s)
- George Kwame Amoako-Nimako
- Key Lab of Eco-restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Xinyao Yang
- Key Lab of Eco-restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang, 110044, China.
| | - Fangmin Chen
- Key Lab of Eco-restoration of Regional Contaminated Environment, Ministry of Education, Shenyang University, Shenyang, 110044, China
- Liaoning Provincial Key Lab of Urban Integrated Pest Management and Ecological Security, Shenyang University, Shenyang, 110044, China
| |
Collapse
|
25
|
Wang B, An B, Su Z, Li L, Liu Y. A novel strategy for sequential reduction of nitrate into nitrogen by CO 2 anion radical: Experimental study and DFT calculation. CHEMOSPHERE 2021; 269:128754. [PMID: 33168291 DOI: 10.1016/j.chemosphere.2020.128754] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 10/17/2020] [Accepted: 10/23/2020] [Indexed: 06/11/2023]
Abstract
In order to expand the application of CO2 anion radical (CO2-), as a novel green reductant in the control of environmental pollution, CO2- radical was induced into the reduction of nitrate. The reduction efficiency, products and mechanism of nitrate or nitrite by CO2- radical were investigated based on the results of batch experiments and theoretical calculation using density functional theory (DFT) methods, respectively. It was found that: (1) the efficiency of nitrate reduction by CO2- radical from the HCOOH/UV system was far lower than that of nitrite under the same reaction conditions, (2) the rate-control step of nitrate reduction by CO2- radical was the transformation process of nitrate into nitrite with an activation energy of 23.9 kcal/mol, (3) the final products of nitrate reduction were mainly composed of nitrogen (N2). On this basis, a novel strategy of rapid reduction of nitrate into N2 using CO2- radical was proposed. Specifically, nitrate was firstly reduced into nitrite with the assistance of Zn/Ag bimetal, and then nitrite was further reduced into N2 by CO2- radical. In this way, the removal efficiency of nitrate was all achieved nearly 100% in the initial nitrate concentration ranging from 25 to 100 mg (N)/L, while the highest N2 selectivity could reach 97.5%. This work provided a promising approach for the reduction of nitrate into nitrogen with high efficiency and high N2 selectivity by CO2- radical.
Collapse
Affiliation(s)
- Bingqing Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Baohua An
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Zhi Su
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Laicai Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China
| | - Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610066, China; Key Laboratory of Treatment for Special Wastewater of Sichuan Province Higher Education System, Sichuan, Chengdu, 610066, China.
| |
Collapse
|
26
|
Wang Z, Chen G, Wang X, Yang G, Liu Y, Zhang C. Performance of L-Cu&Mn-nZVFe@B nanomaterial on nitrate selective reduction under UV irradiation and persulfate activation in the presence of oxalic acid. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123378. [PMID: 32659583 DOI: 10.1016/j.jhazmat.2020.123378] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/31/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
A novel nanomaterial (L-Cu&Mn-nZVFe@B) was synthesized and was applied to nitrate selective reduction under UV irradiation and persulfate activation in the presence of oxalic acid. Results denoted the deposition of copper could prompt the nitrate conversion and improve the nitrate conversion significantly. The high nitrate conversion was on account of the formation of galvanic cells accelerating the generation of electrons, in which Fe° acted as anode and Cu° acted as cathode. Meanwhile, the coexistence of Cu2O and MnO2 exhibited excellent photocatalytic performance with the obvious improvement of N2 selectivity because of the formation of heterojunction could boost the generation of CO2-. Furthermore, the deposition of manganese could also accelerate the generation of CO2- through the activation of persulfate. The conversion of NO3- was almost 100 % and the N2 selectivity could reach 81.57 % by the S2O82-/UV/L-Cu&Mn-nZVFe@B/H2C2O4 system when the initial nitrate concentration was 100 mg /L, the L-Cu&Mn-nZVFe@B dosage was 6.0 g/L, the H2C2O4 dosage was 15 mmol/L, pH was 5.0, the reaction time was 100 min under 25 °C. Research provides an alternative approach for selective reduction nitrate into nitrogen.
Collapse
Affiliation(s)
- Zhen Wang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China; School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China.
| | - Guanghui Chen
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China; School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Xinrui Wang
- School of Chemical and Chemical Engineering, University of Jinan, Jinan, Shandong Province, 250022, PR China
| | - Guihua Yang
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Yu Liu
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| | - Chao Zhang
- School of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong Province, 250353, PR China
| |
Collapse
|
27
|
Shi Y, Yu C, Liu M, Lin Q, Lei M, Wang D, Yang M, Yang Y, Ma J, Jia Z. One-pot synthesis of spherical nanoscale zero-valent iron/biochar composites for efficient removal of Pb( ii). RSC Adv 2021; 11:36826-36835. [PMID: 35494362 PMCID: PMC9043637 DOI: 10.1039/d1ra07373g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 10/21/2021] [Indexed: 01/10/2023] Open
Abstract
In this study, a spherical Fe/C composite (AIBC) was successfully prepared via carbonization of Fe3+-crosslinked sodium alginate. The removal capacity and mechanism of AIBC were evaluated for the adsorption of Pb(ii) from aqueous solution and compared with that of commercial nanoscale zero-valent iron (nZVI). The effects of the initial concentration, pH of Pb(ii) solution, the contact time, coexisting anions, and aging under air were investigated. The results showed that the pH had a strong impact on the adsorption of Pb(ii) by AIBC. The adsorption data for AIBC followed the Langmuir model, while the maximum adsorption capacity at pH 5 was 1881.73 mg g−1. The AIBC had a higher adsorption capability than nZVI, especially under the condition of relatively high Pb(ii) concentrations. The oxidation–reduction reaction between Fe and Pb(ii) was the main mechanism for the adsorption of Pb(ii) onto nZVI. AIBC converted the largest amount of Pb(ii) into PbO·XH2O/Pb(OH)2 mainly by generating Fe2+. In this study, a spherical Fe/C composite (AIBC) was successfully prepared via carbonization of Fe3+-crosslinked sodium alginate.![]()
Collapse
Affiliation(s)
- Yunlong Shi
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Changjiang Yu
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Mengying Liu
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Qiang Lin
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Man Lei
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Darun Wang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Mengwei Yang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Yuting Yang
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Jian Ma
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
- Key Laboratory of Natural Polymer Function Material of Haikou City, College of Chemistry and Chemical Engineering, Hainan Normal University, No. 99 Longkunnan Road, Haikou, 571158, China
| | - Zhengya Jia
- Hainan Huantai Inspection Technology Co. Ltd, Haikou, 571158, China
| |
Collapse
|
28
|
Qu G, Chu R, Wang H, Wang T, Zhang Z, Qiang H, Liang D, Hu S. Simultaneous removal of chromium(VI) and tetracycline hydrochloride from simulated wastewater by nanoscale zero-valent iron/copper-activated persulfate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:40826-40836. [PMID: 32677009 DOI: 10.1007/s11356-020-10120-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 07/13/2020] [Indexed: 06/11/2023]
Abstract
In this paper, metallic copper (Cu) was supported on nanoscale zero-valent iron (nZVI) to form a nanoscale bimetallic composite (nZVI-Cu), which was used to activate persulfate (PS) to simultaneously remove the compound contaminants Cr(VI) and tetracycline hydrochloride (TCH) in simulated wastewater. nZVI, nZVI-Cu, and nZVI-Cu-activated PS (nZVI-Cu/PS) were characterized by SEM, TEM, XRD, and XPS. The effects of the bimetallic composite on Cr(VI) and TCH removal were compared in the nZVI, nZVI-activated PS (nZVI/PS), nZVI-Cu, and nZVI-Cu/PS systems. The results showed that nZVI and Cu can form a nanobimetallic system, which can create galvanic cells; thus, the galvanic corrosion of nZVI and the transfer of electrons are accelerated. For a single contaminant, the removal efficiency of Cr(VI) and TCH is the highest when nZVI is loaded with 3 wt% and 1 wt% Cu, respectively. The ratio of nZVI-Cu with 3 wt% Cu to PS is 7:1, and the removal efficiency of Cr(VI) and TCH compound contaminants is ~ 100% after 60 min under acidic conditions, which indicates that the Cr(VI) reduction and TCH oxidation were complete in the nZVI-Cu/PS system. The mechanisms of simultaneous removal of Cr(VI) and TCH in the nZVI-Cu/PS system are proposed. The removal of Cr is because of the adsorption-reduction effects of the nZVI-Cu bimetallic material. The degradation of TCH is mainly due to the action of oxidative free radicals generated by Fe2+-activated PS. The free radical capture experiments showed that SO- 4· plays a major role in the process of TCH degradation.
Collapse
Affiliation(s)
- Guangzhou Qu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China.
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China.
| | - Rongjie Chu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
| | - Hui Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
| | - Tiecheng Wang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China
| | - Hong Qiang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China
| | - Dongli Liang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China
| | - Shibin Hu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shanxi, People's Republic of China
- Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, 712100, Shanxi, People's Republic of China
| |
Collapse
|
29
|
Wang B, An B, Liu Y, Chen J, Zhou J. Selective reduction of nitrate into nitrogen at neutral pH range by iron/copper bimetal coupled with formate/ferric ion and ultraviolet radiation. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117061] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
30
|
Effects of Framework Disruption of Ga and Ba Containing Zeolitic Materials by Thermal Treatment. Catalysts 2020. [DOI: 10.3390/catal10090975] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The effect of the thermal treatment of some zeolitic materials was studied on oxidative dehydrogenation (ODH) of n-octane. Gallium containing faujasite catalysts were synthesized using isomorphic substitution, specifically, a galosilicalite (Ga-BaY(Sil)) and an aluminosilicalite substituted with gallium (Ga-BaY(IS)), with constant Si/M ratio. The catalysts were thermally treated at different temperatures (250, 550, and 750 °C) before catalytic testing. The quantification of total and strength of acid sites by FT-IR (O-H region), pyridine-IR, and NH3-temperature-programmed desorption (TPD) confirmed a decrease in the number of Brønsted acid sites and an increase in the number of Lewis acid sites upon increasing the calcination temperature. Isothermal n-octane conversion also decreased with the catalysts’ calcination temperature, whereas octene selectivity showed the opposite trend (also at iso-conversion). The COx selectivity showed a decrease over the catalysts calcined from 250 to 550 °C and then an increase over the 750 °C calcined catalysts, which was due to the strong adsorption of products to strong Lewis acid sites on the catalysts leading to the deep oxidation of the products. Only olefinic-cracked products were observed over the 750 °C calcined catalysts. This suggested that the thermal treatment increases Lewis acid sites, which activate n-octane using a bimolecular mechanism, instead of a monomolecular mechanism.
Collapse
|
31
|
Metal nanoparticles containing chitosan wrapped cellulose nanocomposites for catalytic hydrogen production and reduction of environmental pollutants. Carbohydr Polym 2020; 242:116286. [DOI: 10.1016/j.carbpol.2020.116286] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/08/2020] [Accepted: 04/10/2020] [Indexed: 02/06/2023]
|
32
|
Wang Y, Yu L, Wang R, Wang Y, Zhang X. A novel cellulose hydrogel coating with nanoscale Fe 0 for Cr(VI) adsorption and reduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 726:138625. [PMID: 32315860 DOI: 10.1016/j.scitotenv.2020.138625] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 04/08/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
A novel cellulose hydrogel coating nanoscale Fe0 (CH@nFe0) was synthesized and utilized to improve the dispersibility and oxidation resistance of nFe0. The composition and structure of CH@nFe0 were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS) before and after its reaction with Cr(VI). The performance of CH@nFe0 in the removal of Cr(VI) was evaluated through a comparative experiment between nFe0 and CH. The influence of the initial concentration of Cr(VI), temperature, dosage, and the initial pH of the solution were also evaluated in this reaction system. The results showed that CH@nFe0 allowed a higher Cr(VI) removal rate compared to nFe0 and CH. This might have derived from an enhanced reduction and adsorption of Cr(VI) by CH. Meanwhile, the network structure of the cellulose hydrogel served as a mass-transfer channel between Cr(VI) and nFe0. In addition, the increase of the initial solution pH minimized the removal of Cr(VI). This mechanism revealed that CH coating resulted in an enhancement of the adsorption capability and reducibility of CH@nFe0 with respect to Cr(VI). The CH@nFe0 composite is characterized by an advantageous mesoporous network structure and functional groups of amide and carboxylic acid, which provide additional active sites and promote mass transfer. This new three-dimensional (3-D) cellulose hydrogel coating containing nFe0 can be effectively used for the removal of Cr(VI) ions from aquatic environments.
Collapse
Affiliation(s)
- Yin Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Lan Yu
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Ruotong Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Yun Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China.
| |
Collapse
|
33
|
Effect and mechanism of graphene structured palladized zero-valent iron nanocomposite (nZVI-Pd/NG) for water denitration. Sci Rep 2020; 10:9931. [PMID: 32555218 PMCID: PMC7303133 DOI: 10.1038/s41598-020-66725-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Accepted: 03/02/2020] [Indexed: 11/08/2022] Open
Abstract
Nitrate reduction by zero-valent iron-based materials has been extensively studied. However, the aggregation of nanoparticles and the preference for unfavored ammonia products limit the application of this technology. To overcome this issue, this study introduced a novel synthesized nanoscale palladized zero-valent iron graphene composite (nZVI-Pd/NG) and explored its nitrate reduction efficiency. A nitrate removal rate of 97.0% was achieved after 120 min of reaction for an initial nitrate concentration of 100 mg N/L. The nitrogen gas selectivity was enhanced from 0.4% to 15.6% at the end point compared to nanoscale zero-valent iron (nZVI) particles under the same conditions. Further analyses revealed that zero-valent metal nanoparticles spread uniformly on the graphene surface, with a thin layer of iron (hydr)oxides dominated by magnetite. The nZVI-Pd/NG exhibited good catalytic activity with the associated activation energy of 17.6 kJ/mol being significantly lower than that with nZVI (42.8 kJ/mol). The acidic condition promoted a higher nZVI utilization rate, with the excess dosage of nZVI-Pd/NG ensuring a high nitrate removal rate for a wide pH range. This study demonstrates an improvement in nitrate reduction efficiency in a nZVI system by combining the exceptional properties of graphene and palladium.
Collapse
|
34
|
Zhang Z, Xu C, Han H, Zheng M, Shi J, Ma W. Effect of low-intensity electric current field and iron anode on biological nitrate removal in wastewater with low COD to nitrogen ratio from coal pyrolysis. BIORESOURCE TECHNOLOGY 2020; 306:123123. [PMID: 32179400 DOI: 10.1016/j.biortech.2020.123123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2019] [Revised: 02/25/2020] [Accepted: 03/01/2020] [Indexed: 06/10/2023]
Abstract
Mixotrophic nitrate removal in wastewater from coal pyrolysis was achieved in microbial electrolysis cell with iron anode (iron-MEC). The effect of voltage, iron anode and conductivity were investigated. The effluent TN concentration was 8.35 ± 1.94 mg/L in iron-MEC when the conductivity of the wastewater was adjusted to 3.97 ± 0.08 mS/cm, which was lower than that in no-treated reactor. The increase of current density, which was resulted from the elevation of conductivity, promoted the iron corrosion and Fe2+ ion generation. Therefore, more Fe2+ ion was utilized by nitrate reducing ferrous oxidation bacteria (NRFOB) used to reduce nitrate. The microbial community analysis demonstrated that NRFOB, including Acidovorax and Bradyrhizobium, possessed a higher abundance in iron-MEC. The enrichment of Geobacter in iron-MEC might imply that the part of Fe(III) produced by ferrous oxidation was reduced by Geobacter, which established an iron cycle. Moreover, the production of N2O was decreased by the formation of Fe2+ ion.
Collapse
Affiliation(s)
- Zhengwen Zhang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Chunyan Xu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Hongjun Han
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Mengqi Zheng
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Jingxin Shi
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China
| | - Wencheng Ma
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, 73 Huanghe Road, Nangang District, Harbin 150090, China.
| |
Collapse
|
35
|
Song N, Xu J, Cao Y, Xia F, Zhai J, Ai H, Shi D, Gu L, He Q. Chemical removal and selectivity reduction of nitrate from water by (nano) zero-valent iron/activated carbon micro-electrolysis. CHEMOSPHERE 2020; 248:125986. [PMID: 32006831 DOI: 10.1016/j.chemosphere.2020.125986] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/17/2020] [Accepted: 01/20/2020] [Indexed: 06/10/2023]
Abstract
The processes of (n)ZVI/AC((nano)zero valent iron/activated carbon)micro-electrolysis were applied for nitrate removal from groundwater, aiming to reduce nitrate to N2, an environmentally friendly end product. (n)ZVI was utilized and combined with selected commercial AC to form the micro-electrolysis. Effect of different operational parameters, including reductant dosage, (n)ZVI/AC ratios, and reaction pH, on nitrate and TN removal were cleared. The results showed that nZVI presents higher reaction activities than ZVI in micro-electrolysis. With the increase of the (n)ZVI/AC mass ration from 1:2 to 2:1, the TN removal increased from 16.8% to 38.9%, then declined with the further increase of the ratio. The nitrate removal was negatively correlated with the initial pH of the solution. Compared to ZVI particles, even with a lower dosage, nZVI presented 100% nitrate removal at acidic and neutral pH conditions, and TN removal could maintain higher than 35% with pH lower than 9.0. A kinetic model was also established to explain the pathways of nitrate removal, and the results indicated that AC not only enriched nitrate as an adsorbent but also present highly potential in catalytic converting nitrate to N2. The technique presented great potentials in removing nitrate from water and a promising application prospect.
Collapse
Affiliation(s)
- Ningfan Song
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Jian Xu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Yunpeng Cao
- Chongqing Jiaotong University, Chongqing, 66 Xuefu Avenue, Chongqing, 400074, PR China
| | - Fan Xia
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Jun Zhai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Hainan Ai
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Dezhi Shi
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| | - Li Gu
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China.
| | - Qiang He
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing, 400044, China
| |
Collapse
|
36
|
Investigating the design parameters for a permeable reactive barrier consisting of nanoscale zero-valent iron and bimetallic iron/copper for phosphate removal. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112144] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
37
|
Gopal G, Sankar H, Natarajan C, Mukherjee A. Tetracycline removal using green synthesized bimetallic nZVI-Cu and bentonite supported green nZVI-Cu nanocomposite: A comparative study. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 254:109812. [PMID: 31733482 DOI: 10.1016/j.jenvman.2019.109812] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 10/26/2019] [Accepted: 10/30/2019] [Indexed: 06/10/2023]
Abstract
Antibiotics, one of the most abundant contaminants in the natural water systems possess various difficulties to remediate through conventional water treatment methods. Tetracycline (TC) remains one of the most widely used antibiotics for human and veterinary applications because of its broad-spectrum antibacterial activity. In the current study, we have employed nano zero-valent technology-based antibiotic remediation. In a first of its kind work, we applied bimetallic nZVI-Cu nanoparticles synthesized using pomegranate rind extract for remediation. TC removal of 72 ± 0.5% (initial TC concentration 10 mg/L) was obtained with the nZVI-Cu concentration of 750 mg/L at pH 7. To overcome the colloidal instability and enhance TC removal further, the bimetallic nanoparticles were formed in-situ over bentonite. The bentonite supported composite (B/nZVI-Cu) was used to treat TC an initial concentration of 10 mg/L and the results confirmed significant enhancement in removal with a substantially decreased nanoparticle loading. Using only 150 mg/L of B/nZVI-Cu at pH 7, 95 ± 0.05% of TC could be removed. The nanoparticles and the composites were characterized by SEM, FT-IR, and XRD analyses. The removal process was followed by UV-Visible analyses in conjunction with TOC, ORP and LCMS measurements. For treatment using B/nZVI-Cu, the reusability of the composite was established up to three cycles of operation, and the process was validated in the real water systems. Substantially decreased residual toxicity of the composite treated TC solution lends credence to the environmental sustainability of the process.
Collapse
Affiliation(s)
- Geetha Gopal
- Centre for Nanobiotechnology, VIT, Vellore, Tamil Nadu, India
| | - Hema Sankar
- Centre for Nanobiotechnology, VIT, Vellore, Tamil Nadu, India
| | | | | |
Collapse
|
38
|
Niu Z, Zhang S, Han Y, Qi M. Optimization of the N2 generation selectivity in aqueous nitrate reduction using internal circulation micro-electrolysis. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2018.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
39
|
Ma J, Zhou B, Zhang H, Zhang W, Wang Z. Activated municipal wasted sludge biochar supported by nanoscale Fe/Cu composites for tetracycline removal from water. Chem Eng Res Des 2019. [DOI: 10.1016/j.cherd.2019.07.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
40
|
Tang TT, Xing QJ, Zhang SH, Mu Y, Jiang XH, Zhou ZG, Xiao X, Zou JP. High selective reduction of nitrate into nitrogen by novel Fe-Cu/D407 composite with excellent stability and activity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:888-896. [PMID: 31207573 DOI: 10.1016/j.envpol.2019.05.071] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/12/2019] [Accepted: 05/13/2019] [Indexed: 05/23/2023]
Abstract
In this study, we develop a new composite material of Fe-Cu/D407 composite via using nanoscale zero-valent iron (nZVI) with copper deposited on chelating resin (D407) to remove nitrate from the water. The experimental results show that a remarkable nitrate removal and the selectivity of N2 are 99.9% and 89.7%, respectively, under the anaerobic conditions of Cu/Fe molar ratio of 1:2, pH = 3.0. Even without of inert gas and adjusting the initial pH of the solution, the removal rate of nitrate by Fe-Cu/D407 reached to 85% and the selectivity of nitrogen reached to 55%. Meanwhile, the Fe-Cu/D407 maintained preferable removal efficiency of nitrate (100% - 92%) over a wide pH range of 3-11. In addition, the removal rate of the drinking water, lake water and wastewater from the Fe-Cu/D407 is still very high and the reactivity of Fe-Cu/D407 was relatively unaffected by the presence of dissolved ions in the waters tested. Moreover, the synergetic effect of Fe, Cu and D407 in the composite Fe-Cu/D407 were well investigated for the first time according to the analyses of TPR, XPS and EIS. The catalytic mechanism and denitrification routes were also proposed.
Collapse
Affiliation(s)
- Ting-Ting Tang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Qiu-Ju Xing
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.
| | - Si-Hai Zhang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Yi Mu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Xun-Heng Jiang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Zhi-Gang Zhou
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Xiao Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China
| | - Jian-Ping Zou
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, PR China.
| |
Collapse
|
41
|
Synthesis of Fe/Ni Bimetallic Nanoparticles and Application to the Catalytic Removal of Nitrates from Water. NANOMATERIALS 2019; 9:nano9081130. [PMID: 31390768 PMCID: PMC6724039 DOI: 10.3390/nano9081130] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 07/25/2019] [Accepted: 07/30/2019] [Indexed: 11/27/2022]
Abstract
This work investigated the effectiveness of zerovalent iron and Fe/Ni bimetallic nanoparticles in the treatment of water polluted by a high concentration of nitrates. Nanoparticle synthesis was carried out by a sodium borohydride reduction method in the presence of sodium oleate as a surfactant. The particles were characterized by XRD and SEM. Batch experiments were conducted on water samples contaminated by 300 mg L−1 of nitrate. The parameters investigated were the Fe/Ni dosage (0.05, 0.1, 0.2, 0.3, and 0.4 g L−1) and the reaction pH (unbuffered; buffered at pH = 3; initial pH = 3, 5, and 10). The results showed that almost complete nitrate removal (>99.8%) was always achieved after 15 min at a concentration of bimetallic nanoparticles higher than 0.2 g L−1. The optimization of bimetallic nanoparticle dosage was carried out at a fixed pH. Kinetic study tests were then performed at different temperatures to assess the effect of temperature on the nitrate removal rate. By fixing the pH at acidic values and with an operating temperature of 303 K, nitrates were completely removed after 1 min of treatment.
Collapse
|
42
|
Shubair T, Eljamal O, Tahara A, Sugihara Y, Matsunaga N. Preparation of new magnetic zeolite nanocomposites for removal of strontium from polluted waters. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111026] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
43
|
Liu Y, Wang J. Reduction of nitrate by zero valent iron (ZVI)-based materials: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 671:388-403. [PMID: 30933795 DOI: 10.1016/j.scitotenv.2019.03.317] [Citation(s) in RCA: 157] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 03/14/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
Zero valent iron (ZVI) and ZVI-based materials have been widely used for the reduction of nitrate, a major contaminant commonly detected in groundwater and surface water. The reduction of nitrate by ZVI is influenced by various factors, such as the physical and chemical characteristics of ZVI and the operational parameters. There are some problems for the nitrate reduction by ZVI alone, for example, the formation of iron oxides on the surface of ZVI at high pH condition, which will inhibit the further reduction of nitrate; in addition, the end reduction product is mainly ammonium, which itself needs to be concerned. Several strategies, such as the optimization of the structure of ZVI composites and the addition of reducing assistants, have been proposed to increase the reduction efficiency and the selectivity of end product of nitrate reduction in a wide range of pH, especially under neutral pH condition. This review will mainly focus on the high efficient reduction of nitrate by ZVI-based materials. Firstly, the reduction of nitrate by ZVI alone was briefly introduced and discussed, including the influence of physical and chemical characteristics of ZVI and some operational parameters on the reduction efficiency of nitrate. Then, the strategies for enhancing the reduction efficiency and the N2 selectivity of the reductive products of nitrate were systematically analyzed and evaluated, especially the optimization of the structure of ZVI composites (e.g., doped ZVI composite, supported ZVI composite and premagnetized ZVI), and the addition of reducing assistants (e.g., metal cations, ligand, hydrogen gas and light) were highlighted. Thirdly, the mechanisms and pathways of nitrate reduction were discussed. Finally, concluding remarks and some suggestions for the future research were proposed.
Collapse
Affiliation(s)
- Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, PR China; Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China
| | - Jianlong Wang
- Collaborative Innovation Center for Advanced Nuclear Energy Technology, INET, Tsinghua University, Beijing 100084, PR China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing 100084, PR China.
| |
Collapse
|
44
|
Diao ZH, Qian W, Lei ZX, Kong LJ, Du JJ, Liu H, Yang JW, Pu SY. Insights on the nitrate reduction and norfloxacin oxidation over a novel nanoscale zero valent iron particle: Reactivity, products, and mechanism. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 660:541-549. [PMID: 30641381 DOI: 10.1016/j.scitotenv.2019.01.037] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/11/2018] [Accepted: 01/05/2019] [Indexed: 05/26/2023]
Abstract
Herein, the application of a novel acid mine drainage-based nanoscale zero valent iron (AMD-based nZVI) for the remediation of nitrate and norfloxacin (NOR) was studied. Experimental results indicated that the catalytic reactivity of AMD-based nZVI toward nitrate reduction was superior to that of iron salt-based nanoscale zero valent iron (Iron salt-based nZVI). The presence of ultrasound irradiation could significantly enhance the reactivity toward both the nitrate reduction and NOR oxidation processes. The optimal efficiencies of nitrate and NOR by AMD-based nZVI/US process could be kept 96 and 94% within 120 min, respectively. Ammonia was identified as a major product in nitrate reduction process, while three oxidation products were observed in NOR degradation process. Both reduction reaction of nitrate from AMD-based nZVI and oxidation reaction of NOR from US-assisted Fenton system might be involved in AMD-based nZVI/US process. The AMD-based nZVI/US process showed a better performance on the removal of NOR compared with that of nitrate. The findings of the present work could be as a guide and show that AMD-based nZVI/US process is feasible for the remediation of both nitrate and NOR in real wastewater.
Collapse
Affiliation(s)
- Zeng-Hui Diao
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China; Department of Civil and Environment Engineering, The Hong Kong Polytechnic University, Hong Kong, China.
| | - Wei Qian
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Ze-Xiang Lei
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | | | - Jian-Jun Du
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Hui Liu
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Jie-Wen Yang
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
| | - Sheng Yan Pu
- Chengdu University of Technology, Chengdu 610059, China.
| |
Collapse
|
45
|
Shen Z, Bai J, Zhang Y, Li J, Zhou T, Wang J, Xu Q, Zhou B. Efficient purification and chemical energy recovery from urine by using a denitrifying fuel cell. WATER RESEARCH 2019; 152:117-125. [PMID: 30665158 DOI: 10.1016/j.watres.2018.12.066] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Revised: 12/23/2018] [Accepted: 12/25/2018] [Indexed: 06/09/2023]
Abstract
Urine is a major biomass resource, and its excessive discharge would lead to severe aquatic nitrogen pollution and even eutrophication. In this study, we designed an innovative denitrifying fuel cell (DFC) under illumination to purify urine and convert its chemical energy into electricity. The central ideas include the following: 1) on the anode, chlorine radicals (Cl) and hydroxyl (HO) radicals were induced to react with amine or ammonia in urine into N2, and to mineralize organics into CO2, respectively; 2) on the cathode, NO2- or NO3- generated in the cell was selectively reduced to N2 and tiny NH4+ by Pd/Au/NF; 3) NH4+ was further oxidized to N2 by Cl according to process 1), then the total nitrogen (TN) was ultimately removed by a continuous redox loop between anode and cathode; 4) the separation and migration of charges were strengthened by a self-bias poly-Si/WO3 photoanode. Result indicated that the DFC showed an efficient yield of electricity and almost completely N-removing properties: power density of 2.24 mW cm-2, total nitrogen and total organic carbon (TOC) removal efficiency, respectively 99.02% and 50.76% for artificial urine; and power density of 2.51 mW cm-2, TN and TOC removal efficiency, respectively 98.60% and 54.55% for actual urine. The study proposes a potential and environment-friendly approach by using novel DFC to purify urine and generate electricity.
Collapse
Affiliation(s)
- Zhaoxi Shen
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Jing Bai
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Yan Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Jinhua Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China.
| | - Tingsheng Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Jiachen Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China
| | - Qunjie Xu
- Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; College of Environmental and Chemical Engineering, Shanghai University of Electric Power, No.2588 Changyang Road, Shanghai, 200090, PR China
| | - Baoxue Zhou
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, No. 800, Dongchuan Rd, Shanghai, 200240, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; Key Laboratory of Thin Film and Microfabrication Technology, Ministry of Education, Shanghai, 200240, PR China.
| |
Collapse
|
46
|
Liu Y, Gong X, Yang W, Wang B, Yang Z, Liu Y. Selective Reduction of Nitrate into Nitrogen Using Cu/Fe Bimetal Combined with Sodium Sulfite. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.8b05721] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanlan Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Xiaobo Gong
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
- Key Laboratory of Special Waste Water Treatment, Sichuan Province Higher Education System, Chengdu, Sichuan 610066, China
| | - Wenjing Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Bingqing Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Zhao Yang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
| | - Yong Liu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, Sichuan 610066, China
- Key Laboratory of Special Waste Water Treatment, Sichuan Province Higher Education System, Chengdu, Sichuan 610066, China
| |
Collapse
|
47
|
|
48
|
Khan SB, Ali F, Akhtar K. Chitosan nanocomposite fibers supported copper nanoparticles based perceptive sensor and active catalyst for nitrophenol in real water. Carbohydr Polym 2019; 207:650-662. [DOI: 10.1016/j.carbpol.2018.12.032] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 12/09/2018] [Accepted: 12/11/2018] [Indexed: 01/22/2023]
|
49
|
Lee WT, van Muyden AP, Bobbink FD, Huang Z, Dyson PJ. Indirect CO 2 Methanation: Hydrogenolysis of Cyclic Carbonates Catalyzed by Ru-Modified Zeolite Produces Methane and Diols. Angew Chem Int Ed Engl 2019; 58:557-560. [PMID: 30461148 DOI: 10.1002/anie.201811086] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Indexed: 12/22/2022]
Abstract
We report a ruthenium-modified zeolite which efficiently transforms propylene carbonate to propylene glycol and methane, under solvent-free conditions. The catalyst achieved high product selectivity and no significant ageing effect was observed after multiple cycles. The resulting liquid product (water-containing glycol) can be directly used as anti-freeze solution and the gas phase can directly be used as an energy carrier in the form of H2 -enriched methane. This process efficiently bridges energy storage and an important chemical synthesis under sustainable (CO2 consuming) conditions.
Collapse
Affiliation(s)
- Wei-Tse Lee
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Antoine P van Muyden
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Felix D Bobbink
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Zhangjun Huang
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| | - Paul J Dyson
- Institut des Sciences et Ingénieuries Chimique, École Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland
| |
Collapse
|
50
|
Application of nZVI and its composites into the treatment of toxic/radioactive metal ions. INTERFACE SCIENCE AND TECHNOLOGY 2019. [DOI: 10.1016/b978-0-08-102727-1.00006-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|