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Pei Y, Chen J, Cheng W, Huang W, Liu R, Jiang Z. A critical review of nitrate reduction by nano zero-valent iron-based composites for enhancing N 2 selectivity. Dalton Trans 2024. [PMID: 39264277 DOI: 10.1039/d4dt02052a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Due to the highly reductive capacity of nano zero-valent iron (nZVI) nanoparticles, the reduction of nitrate (NO3--N) is prone to produce ammonia nitrogen (NH4+-N) as a by-product and has low selectivity for nitrogen gas (N2). Water and dissolved oxygen (DO) in the solution consume electrons from nZVI, decreasing the efficiency of NO3--N reduction. In order to overcome the drawbacks of plain nZVI being used to remove NO3--N pollution, nZVI-based multifunctional materials have been constructed to realize the selective conversion of NO3--N to N2 as well as the efficient removal of NO3--N. Therefore, advanced research on the reduction of NO3--N by nZVI-based composites has been comprehensively reviewed. Strategies to improve NO3--N reduction efficiency and N2 selectivity are proposed. Moreover, the shortcomings of iron-based nanomaterials in NO3--N pollution control have been summarized, and some suggestions for future research directions provided.
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Affiliation(s)
- Yanyan Pei
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, China
| | - Junlan Chen
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, China
| | - Wei Cheng
- College of Ecological Environment and Urban Construction, Fujian University of Technology, Fuzhou, Fujian, 350118, China
| | - Wenzhong Huang
- Fujian Provincial Institute of Architectural Design and Research Co., Ltd, Fuzhou, Fujian 350001, China
| | - Renyu Liu
- 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
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2
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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.
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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.
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3
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Yang X, Yang W, Chen Y, Li Z, Yang G. Chitosan-stabilized iron-copper nanoparticles for efficient removal of nitrate. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:97298-97309. [PMID: 37589845 DOI: 10.1007/s11356-023-29319-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 08/09/2023] [Indexed: 08/18/2023]
Abstract
Chitosan-stabilized iron-copper nanomaterials (CS-nZVI/Cu) were successfully prepared and applied to the nitrate removal. Batch experiments were conducted to examine the effects of experimental parameters on nitrate removal, including Cu loading, CS-nZVI/Cu dosages, initial nitrate concentrations, and initial pHs. From the experimental date, it was concluded that CS-nZVI/Cu has a high nitrate removal efficiency, which can be more than 97%, respectively, at Cu loading = 5%, dosages of CS-nZVI/Cu = 3 g/L, initial nitrate concentrations of 30~120 mg/L, and initial pH values = 2~9. Additionally, the kinetic data for CS-nZVI/Cu were found to fit well with the first-order kinetic model with a rate constant of 0.15 (mg∙L)1-n/min, where n=1. The Langmuir model showed a good fit for NO3- removal, indicating that monolayer chemisorption occurred. The SEM and TEM analyses showed that the addition of chitosan resulted in improved dispersion of the CS-nZVI/Cu. The CS-nZVI/Cu nanomaterials have a more complete elliptical shape and are between 50 and 100 nm in size. The XRD analysis showed that the chitosan encapsulation reduced the oxidation of the iron component and the main product was Fe3O4. The FT-IR analysis showed that the immobilization of chitosan and the iron was accomplished by the ligand interaction. The nitrogen adsorption-desorption isotherm results showed that the CS-nZVI/Cu specific surface area and pore volume decreased significantly after the reaction. Adsorption, oxidation, and reduction are possible mechanisms for nitrate removal by CS-nZVI/Cu. The XPS analysis investigated the contribution of nZVI and Cu in the removal mechanism. Adding copper accelerates the reaction time and rate. In addition, nZVI played a vital role in reducing nitrate to N2. Based on these results, it looks like CS-nZVI/Cu could be a satisfactory material for nitrate removal.
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Affiliation(s)
- Xiaxia Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Wenhong Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Yingjie Chen
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Zixi Li
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China
| | - Gang Yang
- State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, No. 30 Puzhu South Road, Pukou District, Nanjing, 211816, People's Republic of China.
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4
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Wang C, Zhang Y, Luo H, Zhang H, Li W, Zhang WX, Yang J. Iron-Based Nanocatalysts for Electrochemical Nitrate Reduction. SMALL METHODS 2022; 6:e2200790. [PMID: 36103612 DOI: 10.1002/smtd.202200790] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 07/28/2022] [Indexed: 06/15/2023]
Abstract
Nitrate has a high level of stability and persistence in water, endangering human health and aquatic ecosystems. Due to its high reliability and efficiency, the electrochemical nitrate reduction reaction (NO3 RR) is regarded as the best available option for mitigating excess nitrate in water and wastewater, especially for the removal of trace levels of nitrate. One of the most critical factors in the electrochemical reduction are the catalysts, which directly affect the reaction efficiency of nitrate removal. Iron-based nanocatalysts, which have the advantages of nontoxicity, wide availability, and low cost, have emerged as a promising electrochemical NO3 RR material in recent years. This review covers major aspects of iron-based nanocatalysts for electrochemical NO3 RR, including synthetic methods, structural design, performance enhancement, electrocatalytic nitrate reduction test, and reduction mechanism. The recent progress of iron-based nanocatalysts for electrochemical NO3 RR and the mechanism of functional advantages for modified structures are reviewed from the perspectives of loading, doping, and assembly strategies, in order to realize the conversion from pollutant nitrate to harmless nitrogen or ammonia and other sustainable products. Finally, challenges and future directions for the development of low-cost and highly-efficient iron-based nanocatalysts are explored.
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Affiliation(s)
- Chuqi Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Yingbing Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hongxia Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Hui Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Wei Li
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200433, China
| | - Wei-Xian Zhang
- College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai, 200092, P. R. China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
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Jiao Z, Zhou Y, Miao Z, Wen X, Yun Y. Research on catalytic denitrification by zero-valent iron (Fe0) and Pd-Ag catalyst. PLoS One 2022; 17:e0266057. [PMID: 35427386 PMCID: PMC9012368 DOI: 10.1371/journal.pone.0266057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 03/11/2022] [Indexed: 11/19/2022] Open
Abstract
This study primarily focused on how to effectively remove nitrate by catalytic denitrification through zero-valent iron (Fe0) and Pd-Ag catalyst. Response surface methodology (RSM), instead of the single factor experiments and orthogonal tests, was firstly applied to optimize the condition parameters of the catalytic process. Results indicated that RSM is accurate and feasible for the condition optimization of catalytic denitrification. Better catalytic performance (71.6% N2 Selectivity) was obtained under the following conditions: 5.1 pH, 127 min reaction time, 3.2 mass ration (Pd: Ag), and 4.2 g/L Fe0, which was higher than the previous study designed by single factor experiments and orthogonal tests, 68.1% and 68.7% of N2 Selectivity, respectively. However, under this optimal conditions, N2 selectivity showed a mild decrease (69.3%), when the real wastewater was used as influent. Further study revealed that cations (K+, Na+, Ca2+, Mg2+, and Al3+) and anions (Cl-, HCO3-, and SO42-) exist in wastewater could have distinctive influence on N2 selectivity. Finally, the reaction mechanism and kinetic model of catalytic denitrification were further studied.
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Affiliation(s)
- Zhen Jiao
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, China
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Yu Zhou
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Zhijia Miao
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Xueyou Wen
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Yupan Yun
- School of Water Resources and Environment, Institute of Intelligence and Environment Industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
- * E-mail:
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6
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Enhanced nitrate removal and nitrogen-selective conversion mechanism of a combined sponge iron/biochar/manganese sand system. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.03.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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7
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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.
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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.
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8
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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.
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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
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9
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Tokazhanov G, Han S, Lee W. Enhanced catalytic reduction of p-nitrophenol by nano zerovalent iron - supported metal catalysts. CATAL COMMUN 2021. [DOI: 10.1016/j.catcom.2021.106337] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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10
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Denitrification on PdCu-AC with hydrogen from electrocatalytic water splitting. RESEARCH ON CHEMICAL INTERMEDIATES 2021. [DOI: 10.1007/s11164-021-04540-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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11
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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.
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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
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12
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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.
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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.
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13
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Wang T, Zhao Y, Zhang H, Hui W. Non-noble nanoalloy of Ni0, Cu0 and Fe0 used for hydride transfer reaction for CO2. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2020.101417] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Yun Y, Wen X, Liang Z, Zhu Z. Study on reaction mechanism and Langmuir-Hinshelwood kinetic model of catalytic denitrification by Fe 0 and bimetallic catalyst. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2021; 56:501-507. [PMID: 33645455 DOI: 10.1080/10934529.2021.1890496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 02/07/2021] [Accepted: 02/10/2021] [Indexed: 06/12/2023]
Abstract
The focus of this research was on the catalytic reduction of nitrate to nitrogen gas for the water conservation. Zero-valent iron (Fe0) with bimetallic catalyst that carrier supported palladium (Pd) and copper (Cu) was innovatively applied in this study. First, XPS (X-ray photoelectron spectroscopy) analyses and experiments were conducted to study the mechanism of the catalytic reduction of nitrate. In the catalytic reaction, which is regarded as a stepwise process, Fe0 was the electron provider; Pd and Cu supported on carrier played indispensable but distinct roles. The kinetics suggested that the process was better reflected by first-order kinetics of the Langmuir-Hinshelwood model. Additionally, first-order kinetics of the catalytic reaction under the effect of catalysts with different carriers (SiO2, silica gel, kaolin, diatomite, γ-Al2O3, graphene) were further studied. Pd-Cu/graphene catalyst showed higher catalytic performance compared with other catalysts.
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Affiliation(s)
- Yupan Yun
- School of Water Resources and Environment, Institute of Intelligence and Environment industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | | | - Zhao Liang
- School of Water Resources and Environment, Institute of Intelligence and Environment industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
| | - Zhenya Zhu
- School of Water Resources and Environment, Institute of Intelligence and Environment industry Technology, Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Hebei Province Key Laboratory of Sustained Utilization and Development of Water Resources, Hebei GEO University, Shijiazhuang, Hebei, China
- College of ecological health, Hangzhou Vocational & Technical College, Hangzhou, China
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15
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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.
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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
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Rashid US, Simsek S, Kanel SR, Bezbaruah AN. Modified tapioca starch for iron nanoparticle dispersion in aqueous media: potential uses for environmental remediation. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1364-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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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.
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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.
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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.
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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.
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Liu H, Chen Z, Guan Y, Xu S. Role and application of iron in water treatment for nitrogen removal: A review. CHEMOSPHERE 2018; 204:51-62. [PMID: 29653322 DOI: 10.1016/j.chemosphere.2018.04.019] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 06/08/2023]
Abstract
It is crucial to have a review on the role of iron in water treatment for the guidance towards the selection of appropriate processes, content of iron, and application conditions, as there are few reviews available at present and the systematic information is lacking for both researchers and engineers. The objectives of this review are to summarize the state of arts with respect to iron applied in nitrogen removal, discuss chemical and biological or bio-chemical combined nitrogen removal pathways and processes coupled with iron, and to reveal reaction mechanisms as well as providing references or even solutions to pertinent the practical engineering application of nitrate removal coupling with iron. The following information have been summarized and discussed in details: (1) iron based materials with varieties of preparations and forms, (2) major coupling ways of nitrogen removal methods or processes with iron application, (3) chemical reaction equations about a variety of chemical and biological or bio-chemical combined processes and the main mechanisms. In addition, challenges and/or drawbacks during the nitrogen removal processes will also be discussed in this paper, which is aimed to seek better practical engineering applications of nitrate removal coupling with iron.
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Affiliation(s)
- Hongbo Liu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Road, 200093, Shanghai, China.
| | - Zihua Chen
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Road, 200093, Shanghai, China
| | - Yongnian Guan
- Qingyuan-Hong Kong & China Water Co. LTD, 215000, Suzhou China
| | - Suyun Xu
- School of Environment and Architecture, University of Shanghai for Science and Technology, 516 Jungong Road, 200093, Shanghai, China.
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20
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Zhang SS, Yang N, Ni SQ, Natarajan V, Ahmad HA, Xu S, Fang X, Zhan J. One-pot synthesis of highly active Ni/Fe nano-bimetal by simultaneous ball milling and in situ chemical deposition. RSC Adv 2018; 8:26469-26475. [PMID: 35541035 PMCID: PMC9083127 DOI: 10.1039/c8ra04426k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 07/17/2018] [Indexed: 11/21/2022] Open
Abstract
In this study, nanoscale bimetallic particles (Ni/Fe) were prepared by a simultaneous ball milling and in situ chemical deposition process (B&C) with high dechlorination activity for 4-chlorophenol (4-CP). The results suggest that the introduction of Ni significantly improved the dechlorination of 4-CP. The dechlorination activity of Ni/Fe-B&C (k obs = 0.168 min-1) was increased significantly with a lengthening of the milling time and showed maximum activity at the milling time of 4 h. Bimetals prepared with the incorporation of Ni into Fe can quickly and completely dechlorinate 4-CP within 90 min reaction time. The dechlorination activity was mainly attributed to the synergistic effects of Ni and Fe. The dechlorination rate was increased with increasing Ni-Fe dosage but decreased with increasing solution pH and 4-CP concentration. Ni/Fe-B&C catalyst could be reused 10 times at pH below 5.0. This approach could offer great opportunities for both research and industrial applications to eliminate chlorinated organic pollutants.
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Affiliation(s)
- Shuo-Shuo Zhang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University No. 27 Shanda South Road Jinan 250100 Shandong PR China +86-531-88365660 +86-531-88365660
| | - Ning Yang
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University No. 27 Shanda South Road Jinan 250100 Shandong PR China +86-531-88365660 +86-531-88365660
| | - Shou-Qing Ni
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University No. 27 Shanda South Road Jinan 250100 Shandong PR China +86-531-88365660 +86-531-88365660
| | - Vinothkumar Natarajan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University Jinan 250100 PR China +86-531-88365017 +86-531-88365017
| | - Hafiz Adeel Ahmad
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University No. 27 Shanda South Road Jinan 250100 Shandong PR China +86-531-88365660 +86-531-88365660
| | - Shiping Xu
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University No. 27 Shanda South Road Jinan 250100 Shandong PR China +86-531-88365660 +86-531-88365660
| | - Xu Fang
- State Key Laboratory of Microbial Technology, Shandong University Jinan 250100 PR China
| | - Jinhua Zhan
- Key Laboratory for Colloid & Interface Chemistry of Education Ministry, Department of Chemistry, Shandong University Jinan 250100 PR China +86-531-88365017 +86-531-88365017
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Fang Y, Wen J, Zeng G, Shen M, Cao W, Gong J, Zhang Y. From nZVI to SNCs: development of a better material for pollutant removal in water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:6175-6195. [PMID: 29308574 DOI: 10.1007/s11356-017-1143-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/26/2017] [Indexed: 06/07/2023]
Abstract
Nanoscale zero-valent iron (nZVI), with its reductive potentials and wide availability, offers degradative remediation for environmental pollutants. However, weaknesses such as easy aggregation, easy oxidation, and nanoscale size have hindered its further applications in the environment to some extent. Therefore, various supported nZVI composites (SNCs) with higher dispersibility, enhanced water stability, and tunable size have been developed to overcome the weaknesses. SNCs family is a great alternative for water purification applications that require high removal efficiency and rapid kinetics, as a result of their multifunctional properties and magnetic separation capacity. In this review, we compare the advantages of SNCs to nZVI for pollutant removal in water, discuss for the first time the synthetic techniques of obtaining SNCs, and analyze the influencing factors and mechanisms associated with the removal of some typical hazardous pollutants (e.g., dyes, heavy metals, nitrogen, and phosphorus) using SNCs. Moreover, limitations and future research needs of such material are discussed. More attention should be paid to the evaluation of toxicity, development of green synthetic routes, and potential application areas of such materials in future research.
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Affiliation(s)
- Ying Fang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Jia Wen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China.
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China.
| | - Guangming Zeng
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Maocai Shen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Weicheng Cao
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Jilai Gong
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
| | - Yaxin Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, People's Republic of China
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22
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Hou M, Pu Y, Qi WK, Tang Y, Wan P, Yang XJ, Song P, Fisher A. Enhanced electrocatalytic reduction of aqueous nitrate by modified copper catalyst through electrochemical deposition and annealing treatment. CHEM ENG COMMUN 2018. [DOI: 10.1080/00986445.2017.1413357] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Mingtao Hou
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Yuan Pu
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Wei-kang Qi
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Yang Tang
- Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing, China
| | - Pingyu Wan
- Department of Applied Chemistry, Beijing University of Chemical Technology, Beijing, China
| | - Xiao Jin Yang
- School of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
| | - Peng Song
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Adrian Fisher
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
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23
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Ghosh A, Dutta S, Mukherjee I, Biswas S, Chatterjee S, Saha R. Template-free synthesis of flower-shaped zero-valent iron nanoparticle: Role of hydroxyl group in controlling morphology and nitrate reduction. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Ren Y, Zhou J, Lai B, Tang W, Zeng Y. Fe0 and Fe0 fully covered with Cu0 (Fe0 + Fe/Cu) in a fixed bed reactor for nitrate removal. RSC Adv 2016. [DOI: 10.1039/c6ra24014c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
To develop a cost-effective, feasible and robust technology for nitrate removal by chemical degradation, a Fe0 and Fe0 fully covered with Cu0 (i.e., Fe0 + Fe/Cu) fixed reactor was set up in this study.
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Affiliation(s)
- Yi Ren
- Department of Environmental Science and Engineering
- School of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
| | - Jinfan Zhou
- Department of Environmental Science and Engineering
- School of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
| | - Bo Lai
- Department of Environmental Science and Engineering
- School of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
| | - Wenjing Tang
- Department of Environmental Science and Engineering
- School of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
| | - Yan Zeng
- Department of Environmental Science and Engineering
- School of Architecture and Environment
- Sichuan University
- Chengdu 610065
- China
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