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Xu G, Sun L, Tu Y, Teng X, Qi Y, Wang Y, Li A, Xie X, Gu X. Highly stable carbon-coated nZVI composite Fe 0@RF-C for efficient degradation of emerging contaminants. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 22:100457. [PMID: 39161572 PMCID: PMC11331822 DOI: 10.1016/j.ese.2024.100457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 07/15/2024] [Accepted: 07/15/2024] [Indexed: 08/21/2024]
Abstract
Nanoscale zerovalent iron (nZVI) has garnered significant attention as an efficient advanced oxidation activator, but its practical application is hindered by aggregation and oxidation. Coating nZVI with carbon can effectively addresses these issues. A simple and scalable production method for carbon-coated nZVI composite is highly desirable. The anti-oxidation and catalytic performance of carbon-coated nZVI composite merit in-depth research. In this study, a highly stable carbon-coated core-shell nZVI composite (Fe0@RF-C) was successfully prepared using a simple method combining phenolic resin embedding and carbothermal reduction. Fe0@RF-C was employed as a heterogeneous persulfate (PS) activator for degrading 2,4-dihydroxybenzophenone (BP-1), an emerging contaminant. Compared to commercial nZVI, Fe0@RF-C exhibited superior PS activation performance and oxidation resistance. Nearly 95% of BP-1 was removed within 10 min in the Fe0@RF-C/PS system. The carbon layer promotes the enrichment of BP-1 and accelerates its degradation through singlet oxygen oxidation and direct electron transfer processes. This study provides a straightforward approach for designing highly stable carbon-coated nZVI composite and elucidates the enhanced catalytic performance mechanism by carbon layers.
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Affiliation(s)
- Guizhou Xu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Lin Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yizhou Tu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xiaolei Teng
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yumeng Qi
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Yaoyao Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
| | - Xianchuan Xie
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang, 330031, China
- Nanjing University & Yancheng Academy of Environment Protection Technology and Engineering, Nanjing, 210023, China
- Jiangxi Nanxin Environmental Protection Technology Co. LTD, Jiujiang City, Jiangxi Province, 330300, China
| | - Xueyuan Gu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210023, China
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Yan Z, Ouyang J, Wu B, Liu C, Wang H, Wang A, Li Z. Nonmetallic modified zero-valent iron for remediating halogenated organic compounds and heavy metals: A comprehensive review. ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY 2024; 21:100417. [PMID: 38638605 PMCID: PMC11024576 DOI: 10.1016/j.ese.2024.100417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 03/15/2024] [Accepted: 03/16/2024] [Indexed: 04/20/2024]
Abstract
Zero Valent Iron (ZVI), an ideal reductant treating persistent pollutants, is hampered by issues like corrosion, passivation, and suboptimal utilization. Recent advancements in nonmetallic modified ZVI (NM-ZVI) show promising potential in circumventing these challenges by modifying ZVI's surface and internal physicochemical properties. Despite its promise, a thorough synthesis of research advancements in this domain remains elusive. Here we review the innovative methodologies, regulatory principles, and reduction-centric mechanisms underpinning NM-ZVI's effectiveness against two prevalent persistent pollutants: halogenated organic compounds and heavy metals. We start by evaluating different nonmetallic modification techniques, such as liquid-phase reduction, mechanical ball milling, and pyrolysis, and their respective advantages. The discussion progresses towards a critical analysis of current strategies and mechanisms used for NM-ZVI to enhance its reactivity, electron selectivity, and electron utilization efficiency. This is achieved by optimizing the elemental compositions, content ratios, lattice constants, hydrophobicity, and conductivity. Furthermore, we propose novel approaches for augmenting NM-ZVI's capability to address complex pollution challenges. This review highlights NM-ZVI's potential as an alternative to remediate water environments contaminated with halogenated organic compounds or heavy metals, contributing to the broader discourse on green remediation technologies.
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Affiliation(s)
- Zimin Yan
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Jia Ouyang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Bin Wu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Chenchen Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
| | - Hongcheng Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, PR China
| | - Aijie Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, PR China
| | - Zhiling Li
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, 150090, PR China
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3
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Asimakidou T, Kalaitzidou K, Pinakidou F, Zhou T, Rivera-Gil P, Balcells L, Mitrakas M, Makridis A, Katsikini M, Vourlias G, Chrissafis K, Simeonidis K. Implementing magnetically-active Sn-based nanocomposites in hexavalent chromium removal from drinking water. CHEMOSPHERE 2024; 361:142529. [PMID: 38838862 DOI: 10.1016/j.chemosphere.2024.142529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/22/2024] [Accepted: 06/02/2024] [Indexed: 06/07/2024]
Abstract
A novel nanocomposite consisting of Fe3O4-loaded tin oxyhydroxy-chloride is demonstrated as an efficient adsorbent for the removal of hexavalent chromium in compliance to the new drinking water regulation. This study introduces a continuous-flow production of the nanocomposite through the separate synthesis of (i) 40 nm Fe3O4 nanoparticles and (ii) multilayered spherical arrangements of a tin hydroxy-chloride identified as abhurite, before the application of a wet-blending process. The homogeneous distribution of Fe3O4 nanoparticles on the abhurite's morphology, features nanocomposite with magnetic response whereas the 10 % loaded nanocomposite preserves a Cr(VI) uptake capacity of 7.2 mg/g for residual concentrations below 25 μg/L. Kinetic and thermodynamic examination of the uptake evolution indicates a relative rapid Cr(VI) capture dominated by interparticle diffusion and a spontaneous endothermic process mediated by reduction to Cr(III). The efficiency of the optimized nanocomposite was validated in a pilot unit operating in a sequence of a stirring reactor and a rotary magnetic separator showing an alternative and competitive application path than typical fixed-bed filtration, which is supported by the absence of any acute cellular toxicity according to human kidney cell viability tests.
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Affiliation(s)
- Theopoula Asimakidou
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece; Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Kyriaki Kalaitzidou
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Fani Pinakidou
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Ting Zhou
- Integrative Biomedical Materials and Nanomedicine Lab, Universitat Pompeu Fabra, 08003, Barcelona, Spain
| | - Pilar Rivera-Gil
- Integrative Biomedical Materials and Nanomedicine Lab, Universitat Pompeu Fabra, 08003, Barcelona, Spain
| | - Lluis Balcells
- Institut de Ciencia de Materials de Barcelona, CSIC, Campus Universitat Autònoma de Barcelona, A08193 Bellaterra, Spain
| | - Manassis Mitrakas
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Antonios Makridis
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Maria Katsikini
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - George Vourlias
- Department of Physics, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | | | - Konstantinos Simeonidis
- Analytical Chemistry Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.
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Wan J, Guo Y, Zhang Z, Deng R, Wang X, Cao S, Zhang X, Miao Y, Jiang J, Song Z, Long T, Sun C, Zhu X. Persulfate activation with biochar supported nanoscale zero- valent iron: Engineering application for effective degradation of NCB in soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:173053. [PMID: 38723973 DOI: 10.1016/j.scitotenv.2024.173053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/20/2024] [Accepted: 05/06/2024] [Indexed: 05/19/2024]
Abstract
Nitrochlorobenzene (NCB) is very common in pesticide and chemical industries, which has become a major problem in soil environment. However, the remediation of NCB contaminated soil is received finite concern. Using biochar as a substrate for nanoscale-zero valent iron (nZVI/p-BC) to activate peroxodisulfate (PDS), a novel heterogeneous oxidative system had been applied in the current study to remediate NCB contaminants in soil. The degradation efficiencies and kinetics of m-NCB, p-NCB, and o-NCB by various systems were contrasted in soil slurry. Key factors including the dosage of nZVI/p-BC, the molar ratio of nZVI/PDS, initial pH and temperature on degradation of NCB were further examined. The results confirmed that the nZVI/p-BC/PDS displayed the remarkable performance for removing NCB compared with other systems. Higher temperature with nZVI/PDS molar ratio of 2:1 under the acidic condition favored the reduction of NCB. The treatment for NCB with optimal conditions were evaluated for the engineering application. The mechanism of nZVI/p-BC/PDS indicated that electron transfer between p-BC and nZVI was responsible for activation of PDS, generating active species (SO4•-, •OH and 1O2) via both the free and non-free radical pathways. Experimental results revealed prominent availability of nZVI/p-BC/PDS system in remediation of actual contaminated field by NCB.
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Affiliation(s)
- Jinzhong Wan
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yang Guo
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
| | - Zehang Zhang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Rufeng Deng
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China; College of Environment, Hohai University, Nanjing 210098, China
| | - Xiang Wang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Shaohua Cao
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Xiaodong Zhang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Yifei Miao
- College of Environment, Hohai University, Nanjing 210098, China
| | - Jinlin Jiang
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Zhen Song
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Tao Long
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China
| | - Cheng Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China
| | - Xin Zhu
- State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control, Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
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5
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Ma B, Wang Y, Zhu J, Liu D, Chen C, Sun B. In situ carbothermal synthesis of carbonized bacterial cellulose embedded with nano zero-valent iron for removal of Cr(VI). Int J Biol Macromol 2024; 267:131445. [PMID: 38588839 DOI: 10.1016/j.ijbiomac.2024.131445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/17/2024] [Accepted: 04/05/2024] [Indexed: 04/10/2024]
Abstract
Carbonized bacterial cellulose embedded with highly dispersed nano zero-valent iron (nZVI), denoted as nZVI@CBC, was prepared through one-step in situ carbothermal treatment of bacterial cellulose adsorbing iron(III) nitrate. The structure characteristics of nZVI@CBC and its performance in removing hexavalent chromium Cr(VI) were investigated. Results showed the formation of nZVI@CBC with a surface area of 409.61 m2/g at 800 °C, with nZVI particles of mean size 28.2 nm well distributed within the fibrous network of CBC. The stability of nZVI was enhanced by its carbon coating, despite some inevitable oxidation of exposed nZVI. Batch experiments demonstrated that nZVI@CBC exhibited superior removal efficiency compared to bare nZVI and CBC. Under optimal conditions, nZVI@CBC exhibited a high Cr(VI) adsorption capacity of up to 372.42 mg/g. Therefore, nZVI@CBC shows promise as an effective adsorbent for remediating Cr(VI) pollution in water.
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Affiliation(s)
- Bo Ma
- Institute of Pharmaceutical and Biomaterials, Lianyungang Normal College, Sheng Hu Lu 28, Lianyungang 222006, China; Institute of Chemicobiology and Functional Materials, Nanjing University of Science and Technology, Xiao Ling Wei 200, Nanjing 210094, China
| | - Yan Wang
- Institute of Pharmaceutical and Biomaterials, Lianyungang Normal College, Sheng Hu Lu 28, Lianyungang 222006, China
| | - Jianguo Zhu
- Institute of Pharmaceutical and Biomaterials, Lianyungang Normal College, Sheng Hu Lu 28, Lianyungang 222006, China
| | - Dan Liu
- Institute of Pharmaceutical and Biomaterials, Lianyungang Normal College, Sheng Hu Lu 28, Lianyungang 222006, China
| | - Chuntao Chen
- Institute of Chemicobiology and Functional Materials, Nanjing University of Science and Technology, Xiao Ling Wei 200, Nanjing 210094, China
| | - Bianjing Sun
- Institute of Chemicobiology and Functional Materials, Nanjing University of Science and Technology, Xiao Ling Wei 200, Nanjing 210094, China.
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6
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Gan R, Ye Y, Zhan Z, Zhang Q, Deng Y, Liu Y, Li H, Wan J, Pei X, Li Q, Pan F. One-step strategy for efficient Cr(VI) removal via phytate modified zero-valent iron: Accelerated electron transfer and enhanced coordination effect. JOURNAL OF HAZARDOUS MATERIALS 2024; 466:133636. [PMID: 38309166 DOI: 10.1016/j.jhazmat.2024.133636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/09/2024] [Accepted: 01/25/2024] [Indexed: 02/05/2024]
Abstract
The toxic Cr(VI) from industrial wastewater pose serious threat to the human beings and eco-systems. To reduce the operation processes and enhance the removal efficiency of Cr(VI), targeted design of functionalized material is critical in practical applications. Herein, we developed a one-step strategy for simultaneous Cr(VI) reduction and total Cr capture by a novel phytate modified zero-valent iron (PA-ZVI). The reaction kinetics of Cr(VI) removal by PA-ZVI (0.2225 min-1) was 53 times higher compared to ZVI (0.0042 min-1). The Fe(0) content on the surface of PA-ZVI increased from 2.2% to 15.6% compared to ZVI. Meanwhile, Cr(VI) was liable to adsorb on the surface of PA-ZVI due to its lower adsorption energy compared with the original ZVI (-2.09 eV vs -0.85 eV). The incorporation of the phytate ligand promoted electron transfer from iron core to Cr(VI), leading to the rapid in-situ reduction of Cr(VI) adsorbed on the surface of PA-ZVI to Cr(III). PA-ZVI exhibited a satisfactory performance for Cr(VI) removal at a broad pH range (3-11) and in the presence of coexisting ions and humic acid. Moreover, the reactor with the addition of PA-ZVI achieved more than 90% Cr(VI) removal within 72 h in continuous flow experiments. The feasibility of PA-ZVI for the removal of Cr(VI) is also validated in authentic wastewater. This work provides novel ZVI materials that can effectively address decontamination challenges from Cr(VI) pollution.
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Affiliation(s)
- Rui Gan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yuxuan Ye
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210023, China.
| | - Ziyi Zhan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Qiuyue Zhang
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yuwei Deng
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Yingjie Liu
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Haochen Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China
| | - Jun Wan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Xuanyuan Pei
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Qiang Li
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China
| | - Fei Pan
- School of Environmental Engineering, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, China.
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7
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You XY, Yin WM, Wang Y, Wang C, Zheng WX, Guo YR, Li S, Pan QJ. Enrichment and immobilization of heavy metal ions from wastewater by nanocellulose/carbon dots-derived composite. Int J Biol Macromol 2024; 255:128274. [PMID: 37989432 DOI: 10.1016/j.ijbiomac.2023.128274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/05/2023] [Accepted: 11/17/2023] [Indexed: 11/23/2023]
Abstract
Heavy metal ions (HMIs) have been widely applied in various industries because of their excellent physicochemical properties. However, their discharging without appropriate treatment brought about serious pollution problems. So it is desirable but challenging to rapidly and completely clean up these toxic pollutants from water, especially utilizing environmentally friendly and naturally rich biomass materials. In this work, we prepared nanocellulose/carbon dots/magnesium hydroxide (CCMg) ternary composite using cotton via a simple hydrothermal method. The removal mechanism towards Cd2+ and Cu2+ was investigated using a combination of experimental techniques and density functional theory calculations. CCMg shows a good ability to remove HMIs. It is realized that the interaction between each component of CCMg and cadmium nitrate is mainly of hydrogen/dative bonds. Cadmium nitrate is preferentially enriched by the Mg(OH)2 moiety, proved by calculated thermodynamics, interfacial interactions and charges. After transformation, the cadmium carbonate precipitate is fixed on the surface by nanocellulose (NC) via chemical coupling; and of interest is that copper ion precipitates in the form of basic sulfate. Due to its high adsorption effect and simple recovery operation, CCMg is having a wide range of application prospects as a water treatment agent.
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Affiliation(s)
- Xin-Yu You
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China; Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Wei-Ming Yin
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Yan Wang
- Harbin Center for Disease Control and Prevention (Harbin Center for Health Examination), Harbin 150030, China
| | - Chen Wang
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Wen-Xiu Zheng
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Shujun Li
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Qing-Jiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China.
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8
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Yin WM, Wang Y, Sun Y, Zhao ND, Wang C, Chen Z, Guo YR, Li S, Pan QJ. Confinement effect of network-structured carbon dots/cellulose nanocellulose/magnesium hydroxide for enhanced heavy metal ions capture and immobilization. Int J Biol Macromol 2023; 237:124194. [PMID: 36972825 DOI: 10.1016/j.ijbiomac.2023.124194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 03/02/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
To solve pollution problem of heavy metal ions (HMIs) and recover them for sustainable development, a high-efficient-sewage treatment agent, carbon dots/cellulose nanofiber/Mg(OH)2 (CCMg), has been fabricated via a simple hydrothermal method. A variety of characterizations show that cellulose nanofiber (CNF) formed a layered-net structure. Hexagonal Mg(OH)2 flakes of about 100 nm has been attached on CNF. Carbon dots (CDs) around 10-20 nm in size were produced from CNF and distributed along CNF. The extraordinary structural feature endows CCMg with high removal performance towards HMIs. The up-taken capacities reach 992.8 and 667.3 mg g-1 for Cd2+ and Cu2+, respectively. The composite bears excellent durability in treating wastewater. Notably, the qualification of the drinking water can be satisfied while applying CCMg to handle Cu2+ wastewater. The mechanism of removal process has been proposed. Practically, Cd2+/Cu2+ ions were immobilized by CNF due to the space confinement effect. It achieves the facile separation and recovery of HMIs from the sewage, and more importantly, eliminates the risk of secondary contamination.
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Affiliation(s)
- Wei-Ming Yin
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Yan Wang
- Harbin Center for Disease Control and Prevention (Harbin Center for Health Examination), Harbin 150030, China
| | - Yuan Sun
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Nian-Dan Zhao
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Chen Wang
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
| | - Zhijun Chen
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Yuan-Ru Guo
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
| | - Shujun Li
- Key Laboratory of Bio-based Material Science & Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China
| | - Qing-Jiang Pan
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, China
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9
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Li L, He Y, Fu H, Qu X, Xu Z. Efficient and reductive removal of bromate using a novel and stable nanoscale zero-valent iron embedded in N-doped carbon derived from metal-organic frameworks. CHEMOSPHERE 2022; 306:135503. [PMID: 35777548 DOI: 10.1016/j.chemosphere.2022.135503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 06/12/2022] [Accepted: 06/24/2022] [Indexed: 06/15/2023]
Abstract
Nanoscale zero-valent iron (nZVI) has drawn great interest in the remediation of contaminated waters. In this study, we prepared a novel and stable nZVI embedded in N-doped carbon matrix (nZVI@MOF-CN) using a facile direct carbonization method, in which an iron-containing metal-organic framework (MOF) served as both the iron and carbon sources, and melamine as the nitrogen source. The nZVI@MOF-CN composites were used in the removal of bromate in water, which could be effectively reduced by the surface electrons transferred from nZVI to the carbon encapsulation layer due to the Schottky-Mott effect. Doped nitrogen significantly facilitated the reduction of bromate by nZVI, because it enhanced the nZVI dispersion and bromate adsorption, and modulated the carbon matrix conductivity. The bromate reduction activity of nZVI@MOF-CN was more than 50 times higher that of its un-doped counterpart and a commercial nZVI. Moreover, owing to the protection of carbon encapsulation layer, nZVI@MOF-CN exhibited good stability and reusability. The leached concentration of iron ions of nZVI@MOF-CN was less than 5% of the commercial nZVI under the same reaction conditions. Commercial nZVI almost completely lost its bromate reduction activity after use (3% reduction efficiency in the examined time frame), while nZVI@MOF-CN maintained a reduction efficiency of 61%. The nZVI@MOF-CN could be effectively regenerated by hydrogenation reduction. After five reaction-regeneration cycles, nZVI@MOF-CN still achieved a bromate reduction efficiency of approximately 80%. These results suggest that MOF-derived nZVI materials are highly reactive and stable for the reductive removal of pollutants in water.
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Affiliation(s)
- Long Li
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Yuhao He
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Heyun Fu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China.
| | - Xiaolei Qu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
| | - Zhaoyi Xu
- State Key Laboratory of Pollution Control and Resource Reuse/School of the Environment, Nanjing University, Jiangsu, 210046, China
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10
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Xiao WD, Xiao LP, Lv YH, Yin WZ, Sánchez J, Zhai SR, An QD, Sun RC. Lignin-derived carbon coated nanoscale zero-valent iron as a novel bifunctional material for efficient removal of Cr(VI) and organic pollutants. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121689] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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Feng J, Lang G, Li T, Zhang J, Li T, Jiang Z. Enhanced removal performance of zero-valent iron towards heavy metal ions by assembling Fe-tannin coating. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 319:115619. [PMID: 35810583 DOI: 10.1016/j.jenvman.2022.115619] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/03/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Heavy metals (HMs) pose serious threats to both human and environmental health and therefore, effective and low-cost techniques to remove HMs are urgently required. Here we report a facile Fe-tannin coating method for zero-valent iron (ZVI) including nanoparticles (nZVI) and foam (Fefoam), and demonstrate that the generated Fe-tannin coating would remove the inherent passive iron oxide shell of ZVI and provide channels for the galvanic replacement reaction between ZVI and HM ions. Electrochemical characterizations demonstrate that the Fe core of the modified ZVI materials could be easily oxidized and transfer electrons to HM ions owing to the facile mass transport and charge transfer. In 40 min, nZVI@Fe-TA exhibits excellent performances for Cd(II), Ni(II), Pb(II), Hg(II), Cu(II) and Cr(VI) removal, with the apparent removal rate constants of 0.083, 0.085, 0.083, 0.073, 0.092 and 0.078 min-1, respectively. It is found that the surface area normalized rate constants of nZVI@Fe-TA are 4-7 times higher than that of nZVI@Fe2O3 counterpart, suggesting that the improved HM removal reactivity of nZVI@Fe-TA is derived from the surface modification. Moreover, nZVI@Fe-TA has advantages in resisting interference and in the simultaneous removal of different HM ions. Under a 30 min hydraulic retention time, Fefoam@Fe-TA could remove 98% HMs in the successive process. For real electroplating wastewater, Fefoam@Fe-TA exhibits excellent performance for Cr(VI) and Ni(II) removal, producing effluent of stable quality that meets local emission regulation. This study provides a facile strategy to remove the inherent passive iron oxide shell and enhance the HM removal reactivity for ZVI materials.
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Affiliation(s)
- Jing Feng
- School of Science, Xihua University, Chengdu, 610039, China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, China; Research and Application of Small Organic Chiral Molecules Key Laboratory of Yibin City, Yibin Research Institute of Xihua University, Yibin, 644000, China.
| | - Gang Lang
- School of Science, Xihua University, Chengdu, 610039, China
| | - Tingting Li
- School of Science, Xihua University, Chengdu, 610039, China
| | - Jing Zhang
- School of Science, Xihua University, Chengdu, 610039, China
| | - Tengyue Li
- School of Science, Xihua University, Chengdu, 610039, China
| | - Zhenju Jiang
- School of Science, Xihua University, Chengdu, 610039, China; Asymmetric Synthesis and Chiral Technology Key Laboratory of Sichuan Province, Xihua University, Chengdu, 610039, China; Research and Application of Small Organic Chiral Molecules Key Laboratory of Yibin City, Yibin Research Institute of Xihua University, Yibin, 644000, China.
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12
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New method for efficient removal of Cr(VI) by recoverable magnetic nitrogen-doped carbon aerogel microspheres: kinetics and mechanism. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119564] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Lawal Usman U, Kumar Allam B, Bahadur Singh N, Banerjee S. Adsorptive removal of Cr(VI) from wastewater by hexagonal boron nitride-magnetite nanocomposites: Kinetics, mechanism and LCA analysis. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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14
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Huang J, Zhao D, Zhao Y, Tu Y, Wang R. Polyvinylpyrrolidone supported nZVI/Ni bimetallic nanoparticles for enhanced high-performance removal of aqueous Cr(VI). Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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15
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Ni J, Jia Y, Jiang YP, Zhang RJ, Fang F, Zhang YX. Alkali-free synthesis of hexagonal star-like Fe-ethylene glycol (Fe-EG) complex and subsequently decomposition to α-Fe2O3 and Fe3O4/α-Fe/C composites. Chem Phys 2022. [DOI: 10.1016/j.chemphys.2021.111429] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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16
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Wang Q, Li JS, Poon CS. Novel recycling of phosphorus-recovered incinerated sewage sludge ash residues by co-pyrolysis with lignin for reductive/sorptive removal of hexavalent chromium from aqueous solutions. CHEMOSPHERE 2021; 285:131434. [PMID: 34271467 DOI: 10.1016/j.chemosphere.2021.131434] [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: 04/05/2021] [Revised: 06/29/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Incinerated sewage sludge ash (ISSA), a by-product generated from the combustion of dewatered sewage sludge, has been extensively studied as a secondary resource for phosphorus recovery by acid extraction methods. Recycling of the P-recovered ISSA residues is crucial to complete and sustain the whole process. In this study, the ISSA residue rich in iron was reused and co-pyrolyzed with lignin at 650, 850 and 1050 °C under N2 atmosphere for the synthesis of a composite material to remove hexavalent chromium (Cr(VI)) from aqueous solutions. Characterization analysis including XRD, XPS, and FTIR showed that iron oxides in the residue were reduced to zero valent iron at 1050 °C that exhibits the optimal Cr(VI) removal performance. The Cr(VI) removal process was rapid and reached a plateau at around 30 min. The maximum removal rate was obtained at pH 2.0, which was conducive for the treatment of a synthetic Cr(VI)-containing wastewater in fix-bed column experiments, whereby Cr(VI) as well as total Cr were continuously removed. Overall, this study proposed a new routine for the recycling of ISSA residue after phosphorus recovery by the acid extraction method and provided a value-added product for Cr(VI) removal from wastewaters.
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Affiliation(s)
- Qiming Wang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Hung Hom, Kowloon, Hong Kong
| | - Jiang-Shan Li
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Hung Hom, Kowloon, Hong Kong.
| | - Chi Sun Poon
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong; IRSM-CAS/HK PolyU Joint Laboratory on Solid Waste Science, Hung Hom, Kowloon, Hong Kong.
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17
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Wang P, Fu F, Liu T. A review of the new multifunctional nano zero-valent iron composites for wastewater treatment: Emergence, preparation, optimization and mechanism. CHEMOSPHERE 2021; 285:131435. [PMID: 34256206 DOI: 10.1016/j.chemosphere.2021.131435] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 06/30/2021] [Accepted: 07/02/2021] [Indexed: 06/13/2023]
Abstract
Nano zero-valent iron (NZVI) with high chemical reactivity and environmental friendliness had recently become one of the most efficient technologies for wastewater restoration. However, the unitary NZVI system had not met practical requirements for wastewater treatments. Expectantly, the development of NZVI would prefer multifunctional NZVI-based composites, which could be prepared and optimized by the combined methods and technologies. Consequently, a systematic and comprehensive summary from the perspective of multifunctional NZVI-composite had been conducted. The results demonstrated that the advantages of various systems were integrated by multifunctional NZVI-composite systems with a more significant performance of pollutant removal than those of the bare NZVI and its composites. Simultaneously, characteristics of the product prepared by the incorporation of numerous methods were superior to those by a simple method, resulting in the increase of the entirety efficiency. By comparison with other preparation methods, the ball milling method with higher production and field application potential was worthy of attention. After combining multiple technologies, the effect of NZVI and its composite systems could be dramatically strengthened. Preparation technology parameters and treatment effect of contaminants could be further optimized using more comprehensive experimental designs and mathematical models. The mechanism of the multifunctional NZVI system for contaminants treatment was primarily focused on adsorption, oxidation, reduction and co-precipitation. Multiple techniques were combined to enhance the dispersion, alleviating passivation, accelerating electron transfer efficiency or mass transfer action for optimizing the effect of NZVI composites.
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Affiliation(s)
- Peng Wang
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, 300387, Tianjin, PR China; School of Geography and Environmental Sciences, Tianjin Normal University, Tianjin, 300387, Tianjin, PR China
| | - Fugang Fu
- PowerChina Guiyang Engineering Corporation Limited, 300387, Guiyang, PR China
| | - Tingyi Liu
- Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, 300387, Tianjin, PR China.
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18
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Zaib M, Jamil M, Shahzadi T, Farooq U. Ultrasonic green synthesis of different nickel nanoparticles and their application in Cr(VI) removal studies. INORG NANO-MET CHEM 2021. [DOI: 10.1080/24701556.2021.1983836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Maria Zaib
- Department of Chemistry, Government College Women University, Sialkot, Pakistan
| | - Misbah Jamil
- Department of Chemistry, Government College Women University, Sialkot, Pakistan
| | - Tayyaba Shahzadi
- Department of Chemistry, Government College Women University, Sialkot, Pakistan
| | - Umar Farooq
- Institute of Chemistry, University of the Punjab, Lahore, Pakistan
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19
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Abdelfatah A, Fawzy M, Eltaweil AS, El-Khouly ME. Green Synthesis of Nano-Zero-Valent Iron Using Ricinus Communis Seeds Extract: Characterization and Application in the Treatment of Methylene Blue-Polluted Water. ACS OMEGA 2021; 6:25397-25411. [PMID: 34632198 PMCID: PMC8495865 DOI: 10.1021/acsomega.1c03355] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Indexed: 05/15/2023]
Abstract
In this study, the removal of methylene blue dye (MB) from aqueous solution was examined using a novel green adsorbent to overcome the obstacles encountered in chemical methods. Ricinus communis (RC) aqueous seeds extract was herein used as a reducing and capping agent to synthesize a novel nano-zero-valent iron (RC-nZVI) for the adsorption of harmful MB. Structural and morphological characterization of the synthesized RC-nZVI were performed using several techniques, e.g., steady-state absorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and zeta potential. The maximum efficiency of the removal was 96.8% at pH 6 and 25 °C. According to the kinetics study results, the adsorption process obeys the pseudo-first-order model. The experimental equilibrium data were fitted to the Freundlich isotherm model, the maximum adsorption capacity reached was 61.37 mg·g-1, and the equilibrium parameters were determined. The synthesized RC-nZVI possesses good reusability and can be considered as a potential economic and environmentally friendly adsorbent.
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Affiliation(s)
- Ahmed
M. Abdelfatah
- Green
Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt
| | - Manal Fawzy
- Green
Technology Group, Environmental Sciences Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt
| | - Abdelazeem S. Eltaweil
- Department
of Chemistry, Faculty of Science, Alexandria
University, Alexandria 21321, Egypt
| | - Mohamed E. El-Khouly
- Institute
of Basic and Applied Sciences, Egypt-Japan University of Science and
Technology (E-JUST), New Borg
El-Arab, Alexandria 21934, Egypt
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20
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Tan W, Ruan Y, Diao Z, Song G, Su M, Hou L, Chen D, Kong L, Deng H. Removal of levofloxacin through adsorption and peroxymonosulfate activation using carbothermal reduction synthesized nZVI/carbon fiber. CHEMOSPHERE 2021; 280:130626. [PMID: 34162068 DOI: 10.1016/j.chemosphere.2021.130626] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 03/26/2021] [Accepted: 04/18/2021] [Indexed: 06/13/2023]
Abstract
Nano zero-valent iron (nZVI) is widely used for decontamination. The main issues associated with nZVI are agglomeration and oxidation in the long term. In this study, the carbothermal reduction of cotton fiber was conducted for the synthesis of nZVI supported on cotton carbon fiber (nZVI/CF) to address the agglomeration and oxidation of nZVI. Synergistic adsorption and peroxymonosulfate (PMS) activation using nZVI/CF for removing levofloxacin (LEV) are reported herein. The nZVI concentration and morphology were conveniently adjusted by soaking cotton fiber in ferric nitrate solutions of various Fe3+ concentrations. The carbothermal reduction of the cotton fiber at 900 °C contributed to the reduction of Fe3+ into nZVI. A nZVI/CF-900-0.3 system was obtained through the carbothermal reduction of cotton fiber soaked in 0.3 M ferric nitrate. Favorable adsorption of nZVI/CF-900-0.3 to LEV facilitated LEV degradation under PMS activation. Approximately 93.83% of LEV (C0 = 20 ppm) was removed within 60 min with 0.2 g/L of the catalyst and 1 mM PMS. It was preferable to use nZVI + CF-900 to activate PMS for degrading LEV, thus confirming the favorable effect of LEV adsorption on further degradation. The nZVI/CF-900-0.3 exhibited excellent long-term stability given that it was able to activate PMS after it was stored for 6 months. ·SO4- played an important role in LEV degradation in the presence of PMS.
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Affiliation(s)
- Weitong Tan
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Yang Ruan
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Zenghui Diao
- School of Environmental Science and Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510225, China
| | - Gang Song
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Minhua Su
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Li'an Hou
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Diyun Chen
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Lingjun Kong
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China; Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Hongmei Deng
- Guangdong Provincial Key Laboratory of Radionuclides Pollution Control and Resources, School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China.
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21
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Efficient removal of Cr(VI) from aqueous solution by natural pyrite/rhodochrosite derived materials: Performance, kinetic and mechanism. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.08.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Wang Y, Lin N, Gong Y, Wang R, Zhang X. Cu-Fe embedded cross-linked 3D hydrogel for enhanced reductive removal of Cr(VI): Characterization, performance, and mechanisms. CHEMOSPHERE 2021; 280:130663. [PMID: 33971416 DOI: 10.1016/j.chemosphere.2021.130663] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 06/12/2023]
Abstract
Porous hydrogel, as a high-efficiency adsorbent for heavy metals, suffers the drawbacks of the use of expensive and toxic reagents during the process of preparation, further limiting its application ranges. Besides, the heavy metals couldn't be transformed into nontoxic species, which leads to the environmental pollution risk. Herein, a three-dimensionally (3D) structured Cu-Fe embedded cross-linked cellulose hydrogel (nFeCu-CH) was innovatively fabricated by a novel self-assembly and in-situ reduction method, which exhibited exceptionally enhanced adsorption-reduction property towards Cr(VI) wastewater. The results of degradation experiment exhibited that the removal reaction followed Langmuir-Hinshelwood first order kinetic model and the degradation rate constant decreased with solution pH and initial Cr(VI) concentration, while increased with nFeCu-CH dosage and temperature. Regeneration studies demonstrated that more than 88% of Cr(VI) was removed by nFeCu-CH even after five times of cycling. nFeCu-CH exhibited excellent reductive activity, which had a close connection with the superiority of 3D crosslinked architectures and bimetallic synergistic effect. And 97.1% of Cr(VI) could be removed when nFeCu-CH dosage was 9.5 g/L, pH was 5, initial concentration of Cr(VI) was 20 mg/L and temperature was 303 K. Combined with cellulose hydrogel not only could provide additional active sites, but also could restrain the crystallite growth and agglomeration of nano-metallic particles, leading to the promotion of Cr(VI) removal. In addition, coating with Cu facilitated the generation and transformation of electrons according to the continuous redox cycles of Fe(III)/Fe(II) and Cu(II)/Cu(I), leading to the further improvement of the reductivity of nFeCu-CH. Multiple interaction mechanisms including adsorption, reduction and co-precipitation between nFeCu-CH and Cr(VI) were realized. The current work suggested that nFeCu-CH with highly reactive sites, excellent stability and recyclability was considered as an potential material for remediation of Cr(VI) contaminated wastewater.
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Affiliation(s)
- Yin Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Naipeng Lin
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yishu Gong
- 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
| | - Xiaodong Zhang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
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23
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Zhang J, Zhang N, Tack FMG, Sato S, Alessi DS, Oleszczuk P, Wang H, Wang X, Wang S. Modification of ordered mesoporous carbon for removal of environmental contaminants from aqueous phase: A review. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126266. [PMID: 34130163 DOI: 10.1016/j.jhazmat.2021.126266] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/19/2021] [Accepted: 05/28/2021] [Indexed: 06/12/2023]
Abstract
Contamination of water bodies by potentially toxic elements and organic pollutants has aroused extensive concerns worldwide. Thus it is significant to develop effective adsorbents for removing these contaminants. As a new member of carbonaceous material families (activated carbon, biochar, and graphene), ordered mesoporous carbon (OMC) with larger specific surface area, ordered pore structure, and higher pore volume are being evaluated for their use in contaminant removal. In this paper, modification techniques of OMC were systematically reviewed for the first time. These include nonmetallic doping modification (nitrogen, sulfur, and boron) and the impregnation of nano-metals and metal oxides (iron, copper, cobalt, nickel, magnesium, and rare earth element). Reaction conditions (solution pH, reaction temperature, sorbent dosage, and contact time) are of critical importance for the removal performance of contaminants onto OMC. In addition, the pristine and modified OMC have been investigated for the removal of a range of contaminants, including cationic/anionic toxic elements and organic contaminants (synthetic dye, phenol, and others), and involving different and specific mechanisms of interaction with contaminants. The future research directions of the application of pristine and modified OMC were proposed. Overall, this review can provide sights into the modification techniques of OMC for removal of environmental contaminants.
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Affiliation(s)
- Jian Zhang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Ni Zhang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, Jiangsu, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Filip M G Tack
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
| | - Shinjiro Sato
- Department of Science & Engineering for Sustainable Innovation, Soka University, Hachiojishi, Tokyo 192-8577, Japan
| | - Daniel S Alessi
- Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, Canada
| | - Patryk Oleszczuk
- Department of Radiochemistry and Environmental Chemistry, Faculty of Chemistry, Maria Curie-Skłodowska University, 3 Maria Curie-Skłodowska Square, 20-031 Lublin, Poland
| | - Hailong Wang
- Biochar Engineering Technology Research Center of Guangdong Province, School of Environmental and Chemical Engineering, Foshan University, Foshan, Guangdong 528000, China; Key Laboratory of Soil Contamination Bioremediation of Zhejiang Province, Zhejiang A&F University, Hangzhou, Zhejiang 311300, China
| | - Xiaozhi Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, Jiangsu, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, Jiangsu, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China.
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24
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Zhang N, Eric M, Zhang C, Zhang J, Feng K, Li Y, Wang S. ZVI impregnation altered arsenic sorption by ordered mesoporous carbon in presence of Cr(Ⅵ): A mechanistic investigation. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125507. [PMID: 34030402 DOI: 10.1016/j.jhazmat.2021.125507] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/18/2021] [Accepted: 02/21/2021] [Indexed: 06/12/2023]
Abstract
It is challenging to efficiently remove arsenate (As(Ⅴ)) and chromate (Cr(Ⅵ)) simultaneously. Herein, ordered mesoporous carbon (OMC) was fabricated with averaged pore diameter of 6.5 nm and surface area of 997 m2 g-1. Zerovalent iron (ZVI) impregnation reduced surface area of ZVI/OMC (432 m2 g-1) and increased ID/IG ratio by 13%. Maximal Cr(Ⅵ) and As(Ⅴ) sorption capacities at pH 3 were 0.66 and 0.019 mmol g-1 by OMC, and 0.71 and 0.39 mmol g-1 by ZVI/OMC, respectively. Reduction accounted for over 55% for Cr(Ⅵ) and As(Ⅴ) removal followed by complexation and precipitation. Better ZVI/OMC performance was ascribed to higher electron transfer rate and lower electrical resistance than OMC as per electrochemical analysis. Upon Cr(Ⅵ) introduction, As(Ⅴ) removal increased to 0.28 mmol g-1 by OMC, but decreased to 0.16 mmol g-1 by ZVI/OMC. OMC could preferably reduce CrO42- to Cr3+ by hydroxyl group, which enhanced its zeta potential facilitating As(Ⅴ) sorption. Regarding ZVI/OMC, Fe0 and Fe oxide in ZVI/OMC exhibited better affinity to As(Ⅴ), but the competition for the similar active sites resulted in compromised As(Ⅴ) and Cr(Ⅵ) removal. Thus, the novel OMC is advantageous for removal of binary As(Ⅴ) and Cr(Ⅵ), but ZVI/OMC is robust to detoxify single heavy metal.
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Affiliation(s)
- Ni Zhang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, PR China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, PR China
| | - Munyabugingo Eric
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Changai Zhang
- School of Environmental and Natural Resources, Zhejiang University of Science & Technology, Hangzhou 310023, PR China
| | - Jian Zhang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China
| | - Ke Feng
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, PR China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, PR China
| | - Yuncong Li
- Soil and Water Sciences Department, Tropical Research and Education Center, IFAS, University of Florida, Homestead FL 33031, USA
| | - Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225127, PR China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, PR China.
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Ma Y, Gu Y, Jiang D, Mao X, Wang D. Degradation of 2,4-DCP using persulfate and iron/E-carbon micro-electrolysis coupling system. JOURNAL OF HAZARDOUS MATERIALS 2021; 413:125381. [PMID: 33930953 DOI: 10.1016/j.jhazmat.2021.125381] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 01/26/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
The greenhouse gas carbon dioxide (CO2) was converted to a novel CO2 conversion material (electrolytic carbon, EC) by molten salt electrochemical conversion, which served as the carbon source to prepare an iron-carbon composite (Fe-EC). The composite was used to activate persulfate (PS) and degrade 2,4-dichlorophenol (2,4-DCP) in an aqueous solution. The effects of several essential operating parameters such as PS dosage and pH on 2,4-DCP degradation were investigated. The removal efficiency of 2,4-DCP (20 mg L-1) was 97.8% in the presence of Fe-EC (50 mg L-1) and PS (1 mmol L-1). Moreover, the average % reaction stoichiometric efficiency (RSE) (calculated for all selected times 5-60 min) was maintained at 23.07%. Electron paramagnetic resonance (EPR), classical radical scavenging experiments, and density functional theory (DFT) calculations were integrated for a mechanistic study, which disclosed that the active species in the system were identified as SO4⦁-, •OH, and O2⦁-. Moreover, the iron-carbon micro-electrolysis/PS (ICE-PS) system had a high tolerance to a wide range of pH, which would provide theoretical guidance for the treatment of organic pollutants in practical industrial wastewater.
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Affiliation(s)
- Yongsong Ma
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China
| | - Yuxing Gu
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China
| | - Da Jiang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China
| | - Xuhui Mao
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China
| | - Dihua Wang
- School of Resource and Environmental Sciences, Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430072, China.
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Zhuang M, Shi W, Wang H, Cui L, Quan G, Yan J. Carbothermal Synthesis of Ni/Fe Bimetallic Nanoparticles Embedded into Graphitized Carbon for Efficient Removal of Chlorophenol. NANOMATERIALS 2021; 11:nano11061417. [PMID: 34072183 PMCID: PMC8226776 DOI: 10.3390/nano11061417] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/02/2021] [Accepted: 05/25/2021] [Indexed: 12/04/2022]
Abstract
The reactivity of nanoscale zero-valent iron is limited by surface passivation and particle agglomeration. Here, Ni/Fe bimetallic nanoparticles embedded into graphitized carbon (NiFe@GC) were prepared from Ni/Fe bimetallic complex through a carbothermal reduction treatment. The Ni/Fe nanoparticles were uniformly distributed in the GC matrix with controllable particle sizes, and NiFe@GC exhibited a larger specific surface area than unsupported nanoscale zero-valent iron/nickel (FeNi NPs). The XRD results revealed that Ni/Fe bimetallic nanoparticles embedded into graphitized carbon were protected from oxidization. The NiFe@GC performed excellently in 2,4,6-trichlorophenol (TCP) removal from an aqueous solution. The removal efficiency of TCP for NiFe@GC-50 was more than twice that of FeNi nanoparticles, and the removal efficiency of TCP increased from 78.5% to 94.1% when the Ni/Fe molar ratio increased from 0 to 50%. The removal efficiency of TCP by NiFe@GC-50 can maintain 76.8% after 10 days of aging, much higher than that of FeNi NPs (29.6%). The higher performance of NiFe@GC should be ascribed to the significant synergistic effect of the combination of NiFe bimetallic nanoparticles and GC. In the presence of Ni, atomic H* generated by zero-valent iron corrosion can accelerate TCP removal. The GC coated on the surface of Ni/Fe bimetallic nanoparticles can protect them from oxidation and deactivation.
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Affiliation(s)
- Min Zhuang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Wen Shi
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Hui Wang
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
- Correspondence: (H.W.); (J.Y.)
| | - Liqiang Cui
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Guixiang Quan
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
| | - Jinlong Yan
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China;
- School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; (W.S.); (L.C.); (G.Q.)
- Correspondence: (H.W.); (J.Y.)
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Visentin C, Trentin AWDS, Braun AB, Thomé A. Nano scale zero valent iron production methods applied to contaminated sites remediation: An overview of production and environmental aspects. JOURNAL OF HAZARDOUS MATERIALS 2021; 410:124614. [PMID: 33246810 DOI: 10.1016/j.jhazmat.2020.124614] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/03/2020] [Accepted: 11/16/2020] [Indexed: 06/12/2023]
Abstract
The nano scale zero valent iron (nZVI) is the most used material in the remediation process. The inclusion of sustainability in the remediation process has also been gaining prominence. Sustainable remediation seeks to consider the environmental, economic and social impacts of remediation. Thus, this article aims to: (i) identify and describe nZVI production methods and (ii) evaluate their environmental aspects. Thus, this research was carried out in two stages. The first consisted of systematic bibliographical research to identify and describe nZVI production methods. In the second stage, an environmental analysis of the methods was performed considering the methodology of life cycle inventory assessment. Based on the inventory analysis, a classification of environmental aspects was performed, which included criteria, icons and a color scale. Nine nZVI production methods were identified, which comprised different technologies and processes. All methods had negative environmental aspects, such as high energy consumption, waste, wastewater generation and atmospheric emissions. In the classification of methods with regard to environmental aspects, the milling method had the best score, and the ultrasonic wave method the worst. Overall, this study contributes significantly to the detailed knowledge of nZVI synthesis methods in relation to production processes and their environmental aspects.
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Affiliation(s)
- Caroline Visentin
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, São José Neighborhood, BR 285, 99052-900 Passo Fundo, RS, Brazil.
| | - Adan William da Silva Trentin
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, São José Neighborhood, BR 285, 99052-900 Passo Fundo, RS, Brazil.
| | - Adeli Beatriz Braun
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, São José Neighborhood, BR 285, 99052-900 Passo Fundo, RS, Brazil.
| | - Antônio Thomé
- Graduate Program in Civil and Environmental Engineering, University of Passo Fundo, São José Neighborhood, BR 285, 99052-900 Passo Fundo, RS, Brazil.
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Li S, Yang F, Li J, Cheng K. Porous biochar-nanoscale zero-valent iron composites: Synthesis, characterization and application for lead ion removal. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 746:141037. [PMID: 32745850 DOI: 10.1016/j.scitotenv.2020.141037] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/15/2020] [Accepted: 07/15/2020] [Indexed: 06/11/2023]
Abstract
Nano-zero-valent iron has been used in combination with a variety of support carriers to remove heavy metals in solution. However, pre-treatment of the carrier can reflect a better synergistic effect and thus achieve high heavy metal removal capabilities. In this study, the hydrophilic biochar obtained by an acid ammonium persulfate oxidation has an adsorption capacity of up to 135.4 mg g-1 for Pb2+ (25 °C, pH = 6 with adsorbent amount of 10 mg and Pb2+ concentration of 50 mg L-1). Due to the strong Fe-C-O covalent bond, nZVI increases the binding force with the carbon matrix. Benefitting from the high specific surface area, porous structure and rich oxygen-containing functional groups, the resultant nZVI-HPB samples are favourable for Pb2+ diffusion and adsorption, exhibiting maximum adsorption capacity of 480.9 mg g-1 (pH = 6, 25 °C with adsorbent amount of 10 mg and Pb2+ concentration of 200 mg L-1). The multiple interaction mechanisms in the Pb2+ removal process such as the reduction reaction, complexation and co-precipitation proceed simultaneously are concluded by the analyses of Fourier-Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) spectra.
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Affiliation(s)
- Shuaishuai Li
- College of Engineering, Northeast Agricultural University, Harbin 150030, China; College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China
| | - Fan Yang
- College of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
| | - Jiangshan Li
- State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Kui Cheng
- College of Engineering, Northeast Agricultural University, Harbin 150030, China; College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, China.
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Dong Li, Luo HQ, Li NB. A Tin Film CMK-3 Modified Carbon Paste Electrode as an Environmentally Friendly Sensor to Detect Trace Cadmium. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820090099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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30
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Zhang Y, Liu N, Yang Y, Li J, Wang S, Lv J, Tang R. Novel carbothermal synthesis of Fe, N co-doped oak wood biochar (Fe/N-OB) for fast and effective Cr(VI) removal. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124926] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Liu J, Yi Z, Ou Z, Yang T. Removal of Cr(VI) and methyl orange by activated carbon fiber supported nanoscale zero-valent iron in a continuous fixed bed column. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2020; 82:732-746. [PMID: 32970625 DOI: 10.2166/wst.2020.383] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The application of activated carbon fiber supported nanoscale zero-valent iron (ACF-nZVI) in the continuous removal of Cr(VI) and methyl orange (MO) from aqueous solution was studied in depth. The breakthrough curves of Cr(VI) in a fixed bed with ACF-nZVI were measured, and compared with those in the fixed bed with ACF. The catalytic wet peroxide oxidation (CWPO) process for MO was also carried out using ACF-nZVI after reacting with Cr(VI) in the same fixed bed. The results showed that the breakthrough time of ACF-nZVI was significantly longer than that of ACF. Higher pH values were unfavorable for the Cr(VI) removal. The breakthrough time increased with decreasing inlet Cr(VI) concentration or increasing bed height. The Yoon-Nelson and bed depth service time (BDST) models were found to show good agreement with the experimental data. The Cr(VI) removal capacity when using ACF-nZVI was two times higher than that when using ACF. Under the optimal empty bed contact time of 1.256 min, the fixed bed displayed high MO conversion (99.2%) and chemical oxygen demand removal ratio (55.7%) with low Fe leaching concentration (<5 mg/L) after continuous running for 240 min. After three cycles, the conversion of MO remained largely unchanged.
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Affiliation(s)
- Jian Liu
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China E-mail: ; Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang 421008, China and Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, China
| | - Zhengji Yi
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China E-mail: ; Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang 421008, China and Key Laboratory of Functional Organometallic Materials, University of Hunan Province, Hengyang Normal University, Hengyang 421008, China
| | - Ziling Ou
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China E-mail:
| | - Tianhui Yang
- College of Chemistry and Materials Science, Hengyang Normal University, Hengyang 421008, China E-mail:
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32
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Yang F, Xie S, Wang G, Yu CW, Liu H, Liu Y. Investigation of a modified metal-organic framework UiO-66 with nanoscale zero-valent iron for removal of uranium (VI) from aqueous solution. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:20246-20258. [PMID: 32242317 DOI: 10.1007/s11356-020-08381-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2019] [Accepted: 03/09/2020] [Indexed: 05/12/2023]
Abstract
A novel composite material (nZVI/UiO-66) of nanoscale zero-valent iron (nZVI) with a functionalized metal-organic framework was synthesized by this study via a coprecipitation method, which was used for the efficient removal of U(VI) in the aqueous solution. The nZVI/UiO-66 had an excellent removal capacity of 404.86 mg g-1 with an initial U(VI) concentration of 80 mg L-1, 313 K and pH = 6. The transmission electron microscopy (TEM) revealed that nZVI particles were inhomogeneously distributed on the surface of UiO-66. The analysis by the X-ray diffraction (XRD) has further illustrated that the introduction of nZVI did not change the structure of UiO-66. The adsorption process closely followed the pseudo-second-order kinetic and the Freundlich isotherm model. The removal process of U(VI) by nZVI/UiO-66 was spontaneous and endothermic. Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses have illustrated that the mechanism was mainly related to adsorption of U(VI) from UiO-66 and reduction of U(VI) by nZVI. The Zr-O bonds were shown to play a vital role in the uranium removal. nZVI/UiO-66 could be recycled. The uptake rate could be maintained at around 80% after 5 cycles of use. Therefore, these results manifested that the nZVI/UiO-66 is a promising sorbent for the efficient and selective removal of U(VI) in radioactive wastewaters.
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Affiliation(s)
- Fan Yang
- School of Civil Engineering, University of South China, Hengyang, 421001, China
| | - Shuibo Xie
- Key Discipline Laboratory for National Defence of Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, 421001, China.
| | - Guohua Wang
- School of Civil Engineering, University of South China, Hengyang, 421001, China
| | - Chuck Wah Yu
- School of Civil Engineering, University of South China, Hengyang, 421001, China
| | - Haiyan Liu
- School of Civil Engineering, University of South China, Hengyang, 421001, China
| | - Yingjiu Liu
- Hunan Provincial Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang, 421001, China
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Fang Y, Wen J, Zhang H, Wang Q, Hu X. Enhancing Cr(VI) reduction and immobilization by magnetic core-shell structured NZVI@MOF derivative hybrids. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114021. [PMID: 32000028 DOI: 10.1016/j.envpol.2020.114021] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 01/08/2020] [Accepted: 01/17/2020] [Indexed: 06/10/2023]
Abstract
Hexavalent chromium (Cr(VI)) has significantly threatened the environmental health because of its distinct toxicity. A novel magnetic core-shell structured NZVI@ZD composite was designed for simultaneous adsorption and reduction of Cr(VI). NZVI@ZD was synthesized by carbonization of the as-prepared core-shell structure NZVI@zeolitic imidazole framework-67 (ZIF-67). After carbonization, the original ZIF-67 shell shape was preserved well with marginal parts developing to graphitized carbon. Both cobalt (Co) and NZVI nanoparticles were finely dispersed in the porous ZIF-67 derivative (ZD). NZVI@ZD exhibited excellent removal performance for Cr(VI), owing to its high specific surface area and large pore size favorable for Cr(VI) adsorption and diffusion. The maximum adsorption capacity of NZVI@ZD for Cr(VI) was surprisingly as high as 226.5 mg g-1, surpassing the pristine ZIF-67 (29.35 mg g-1) and NZVI@ZIF-67 (36.53 mg g-1). Zeta potential and X-ray photoelectron spectroscopy (XPS) spectra revealed that electrostatic attraction, reduction and precipitation might be involved in the Cr(VI) removal process by NZVI@ZD, resulting in the conversion of the adsorbed Cr(VI) to Cr(III) of lower toxicity and an eventual immobilization on the NZVI@ZD. The magnetic core-shell structured NZVI@ZD possessed superior adsorptive reactivity for Cr(VI) to most other traditional or newly reported materials, thus should be deemed highly efficient for Cr(VI)-contaminated wastewater treatment.
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Affiliation(s)
- Ying Fang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Jia Wen
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China.
| | - Haibo Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Qian Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
| | - Xiaohong Hu
- College of Environmental Science and Engineering, Hunan University, Changsha, 410082, PR China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, PR China
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Li S, Tang J, Liu Q, Liu X, Gao B. A novel stabilized carbon-coated nZVI as heterogeneous persulfate catalyst for enhanced degradation of 4-chlorophenol. ENVIRONMENT INTERNATIONAL 2020; 138:105639. [PMID: 32179320 DOI: 10.1016/j.envint.2020.105639] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/07/2020] [Accepted: 03/04/2020] [Indexed: 06/10/2023]
Abstract
Nano zero-valent iron (nZVI) and its composite materials have been extensively studied in the field of environmental remediation. However, the oxidation and agglomeration of nZVI limits the large-scale application of nZVI in environmental remediation. This study developed a two-step method to prepare stable carbon-coated nZVI (Fe0@C) which combined hydrothermal carbonization and carbothermal reduction methods and used glucose and iron oxide (Fe3O4) as precursors. When the carbothermal reduction temperature was 700 °C and the elemental molar ratio of carbon to iron was 22:1, stable Fe0@C can be generated. The nZVI particles are encapsulated by mesoporous carbon and embedded in the carbon spheres. The unique structure of carbon coating not only inhibits the agglomeration of nZVI, but also makes nZVI stable in air for more than 120 days. Not only that, the as-synthesized Fe0@C exhibited high catalytic activity toward the degradation of 4-chlorophenol (4-CP) by activating persulfate. Different from conventional nZVI catalysts in generation of sulfate radicals, Fe0@C selectively induced hydroxyl radicals for 4-CP degradation. Moreover, Fe0@C has been shown to efficiently degrade 4-CP by using the dissolved oxygen in water to form hydroxyl radicals. This study not only provides a simple, green method for the preparation of stabilized nZVI, but also provides the possibility of large-scale application of nZVI in the field of environmental remediation.
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Affiliation(s)
- Song Li
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Jingchun Tang
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
| | - Qinglong Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China
| | - Xiaomei Liu
- College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education), Tianjin 300350, China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States
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35
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Yang Y, Sun M, Zhou J, Ma J, Komarneni S. Degradation of orange II by Fe@Fe 2O 3 core shell nanomaterials assisted by NaHSO 3. CHEMOSPHERE 2020; 244:125588. [PMID: 32050354 DOI: 10.1016/j.chemosphere.2019.125588] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/03/2019] [Accepted: 12/08/2019] [Indexed: 06/10/2023]
Abstract
Fe@Fe2O3 core shell nanomaterials with different Fe2O3 shell thickness were synthesized and the Fe@Fe2O3/NaHSO3 Fenton-like system was used for the decomposition of Orange II. The consequences are compared with traditional Fenton Fe@Fe2O3/H2O2 system. The Fe@Fe2O3/NaHSO3 system showed extremely good applicability under both strongly acidic and alkaline conditions. The new Fe@Fe2O3-(2)/NaHSO3 system led to more than 99% degradation in 30 s when the pH was 3, which indicated that the Fe@Fe2O3 material was not corroded during the process even under strongly acidic condition. The above Fe@Fe2O3-(2) material was prepared from nano-zero-valent iron aged in solution for 2 h to synthesize the Fe2O3 shell. The reaction mechanism of Fe@Fe2O3/NaHSO3 Fenton-like system was also concluded. The oxidation efficiency was highly improved due to rapid electron transfer between Fe core and Fe2O3 shell, which promoted the direct recycling of ≡Fe3+ and ≡Fe2+ and thus accelerated the generation of SO4- and OH radicals.
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Affiliation(s)
- Yan Yang
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China; Synergy Innovation Institute of GDUT, Shantou, 515041, Guangdong, China.
| | - Mengying Sun
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Jin Zhou
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Jianfeng Ma
- School of Environmental and Safety Engineering, Changzhou University, Jiangsu, 213164, China
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management and Materials Research Institute, 204 Energy and the Environment Laboratory, The Pennsylvania State University, University Park, PA, 16802, USA.
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36
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Lye JWP, Saman N, Noor AMM, Mohtar SS, Othman NS, Sharuddin SSN, Kong H, Mat H. Application of Nanoscale Zero‐Valent Iron‐Loaded Natural Zeolite for Tetracycline Removal Process. Chem Eng Technol 2020. [DOI: 10.1002/ceat.201900479] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jimmy Wei Ping Lye
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
| | - Norasikin Saman
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
| | - Ahmad Mujahid Md Noor
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
| | - Safia Syazana Mohtar
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
| | - Nurul Sakinah Othman
- Manipal International UniversityDepartment of Chemical Engineering 71800 Nilai Malaysia
| | | | - Helen Kong
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
| | - Hanapi Mat
- Universiti Teknologi MalaysiaAdvanced Materials and Process Engineering Laboratory 81310 Skudai Malaysia
- Universiti Teknologi MalaysiaAdvanced Material and Separation Technologies 81310 Skudai Malaysia
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37
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Du Q, Li G, Zhang S, Song J, Zhao Y, Yang F. High-dispersion zero-valent iron particles stabilized by artificial humic acid for lead ion removal. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121170. [PMID: 31522068 DOI: 10.1016/j.jhazmat.2019.121170] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/24/2019] [Accepted: 09/05/2019] [Indexed: 05/29/2023]
Abstract
Nano zero-valent iron (nZVI), as a high-efficiency adsorbent for heavy metals, often suffers being oxidized and assembling together due to small size and super reactivity, further decreasing its adsorption performance and limiting application ranges. Herein, we have designed a novel adsorbent with high-dispersion nZVI stabilized by as-prepared artificial humic acid (AHA-nZVI) derived from hydrothermal humification (HTH) technology. Introduction of artificial humic acid (A-HA) can effectively reduce the oxidation and agglomeration of nZVI, leading to superior kinetic removal efficiency of Pb2+ (> 99.2%) and huge Langmuir removal capacity of 649.0 mg/g. The combination of nZVI and A-HA (contained abundant functional groups, i.e. -OH and -COOH) via C-O-Fe bonding makes nZVI have good dispersion and oxidation resistance. Multiple interaction mechanisms including reduction reaction, complexation and co-precipitation between heavy metals and AHA-nZVI samples are realized. Overall, AHA-nZVI is a promising material for high-performance heavy metal contaminated water treatment.
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Affiliation(s)
- Qing Du
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Guixiang Li
- Max Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, 14476 Potsdam, Germany
| | - Shuaishuai Zhang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Jingpeng Song
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Ying Zhao
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China
| | - Fan Yang
- School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin 150030, China.
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Zeng Q, Huang Y, Wang H, Huang L, Hu L, Zhong H, He Z. A novel composite of almandine supported humboldtine nanospheres, in situ synthesized from natural almandine, possesses high removal efficiency of Cr(Ⅵ) over a wide pH range. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121199. [PMID: 31541962 DOI: 10.1016/j.jhazmat.2019.121199] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/15/2019] [Accepted: 09/09/2019] [Indexed: 06/10/2023]
Abstract
Preparing a cost-effective material which can been applied in a wide pH range is very crucial for the remediation of Cr(Ⅵ) polluted water. In this study, a novel material, almandine/humboldtine nanospheres (AHN) composites, was synthesized directly from almandine by one-pot method. Characterizations of XRD and SEM/TEM showed that the structure changes of almandine to nano-humboldtine leaded to significant increase of Cr(Ⅵ) removal capacities. And 96.45% of Cr(Ⅵ) was removed by AHN-24 composite at pH value of 3, initial Cr(Ⅵ) concentration of 20 mg/L, temperature of 298.15 K and dosage of 0.6 g/L. Furthermore, Cr(Ⅵ) removal capacity was only decreased from 48.23 mg/g to 34.33 mg/g when the initial pH value increased from 3 to 11, which demonstrated that the synthesized composite had a wide pH application range in Cr(Ⅵ) removal. The thermodynamic parameters (ΔG0 < 0, ΔH0 > 0 and ΔS0 > 0) illustrated that Cr(VI) removal process was spontaneous and endothermic. FTIR and XPS revealed that the Cr(Ⅵ) removal mechanisms included reduction-precipitation and reduction-complexation. Combined with cost analysis, all of results implied that the synthesized composites were a high efficient and low cost material for Cr(Ⅵ) pollution remediation in a wide pH range.
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Affiliation(s)
- Qiang Zeng
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Yongji Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Haibei Wang
- Beijing General Research Institute of Mining & Metallurgy, Building 23, Zone 18 of ABP, No. 188, South 4th Ring Road West, Beijing, China
| | - Leiming Huang
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Liang Hu
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
| | - Hui Zhong
- School of Life Sciences, Central South University, Changsha 410083, China.
| | - Zhiguo He
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
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Almond Shell-Derived, Biochar-Supported, Nano-Zero-Valent Iron Composite for Aqueous Hexavalent Chromium Removal: Performance and Mechanisms. NANOMATERIALS 2020; 10:nano10020198. [PMID: 31979270 PMCID: PMC7074915 DOI: 10.3390/nano10020198] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 01/18/2020] [Accepted: 01/21/2020] [Indexed: 11/24/2022]
Abstract
Nano-zero-valent iron biochar derived from almond shell (nZVI-ASBC) was used for hexavalent chromium (CR) removal. Experiments showed that pH was the main factor (p < 0.01) that affected the experimental results. At a dosage of 10 mg·L−1 and pH of 2–6, in the first 60 min, nZVI-ASBC exhibited a removal efficiency of 99.8%, which was approximately 20% higher than the removal yield at pH 7–11. Fourier transform infrared spectroscopy results indicated N-H was the main functional group that influenced the chemisorption process. The pseudo second-order dynamics and Langmuir isotherm models proved to be the most suitable. Thermodynamic studies showed that the reaction was exothermic and spontaneous at low temperatures (T < 317 K). Various interaction mechanisms, including adsorption and reduction, were adopted for the removal of Cr(VI) using the nZVI-ASBC composite. The findings showed that the BC-modified nZVI prepared with almond shell exerts a good effect and could be used for the removal of Cr(VI).
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Wang H, Cai S, Shan L, Zhuang M, Li N, Quan G, Yan J. Adsorptive and Reductive Removal of Chlorophenol from Wastewater by Biomass-Derived Mesoporous Carbon-Supported Sulfide Nanoscale Zerovalent Iron. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1786. [PMID: 31888165 PMCID: PMC6955886 DOI: 10.3390/nano9121786] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 11/16/2022]
Abstract
Chlorinated compounds in a water environment pose serious threats to humanity. A nanoscale zerovalent iron (nZVI) has desirable properties for water dichlorination, but its reactivity is still limited by agglomeration and oxidation. In this study, the mesoporous carbon (MC) derived from biomass waste was prepared for immobilizing nZVI, and the nZVI@MC was further modified by sulfur (S-nZVI@MC) to relieve surface oxidation. The synergistic effect between nZVI and surface modification, the reaction conditions and the removal mechanism were investigated systematically. The characterization results showed nZVI was successfully loaded on the surface of MC, and the aggregation of nZVI was prevented. Moreover, sulfidation modification resulted in the formation of FeS on the surface of nZVI, which effectively alleviated surface oxidation of nZVI and promoted the electron transfer. Batch experiments demonstrated S-nZVI@MC had greatly enhanced reactivity towards 2,4,6-trichlorphenol (TCP) as compared to MC and nZVI, and the removal rate could reach 100%, which was mainly attributed to the significant synergistic effect of MC immobilization and sulfidation modification. Furthermore, the TCP removal process was well described by a Langmuir adsorption model and pseudo-second-order model. The possible mechanism for enhanced removal of TCP is the fast adsorption onto S-nZVI@MC and effective reduction by S-nZVI. Therefore, with excellent reducing activity and antioxidation, S-nZVI@MC has the potential as a pollutant treatment.
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Affiliation(s)
- Hui Wang
- School of Environmental Science and Engineering, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China; (H.W.); (M.Z.); (N.L.); (G.Q.)
| | - Sixiang Cai
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou 570228, China
| | - Liang Shan
- Yancheng Environmental Engineering Technology Research and Development Center, School of Environment, Tsinghua University, Yancheng 224051, China;
| | - Min Zhuang
- School of Environmental Science and Engineering, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China; (H.W.); (M.Z.); (N.L.); (G.Q.)
| | - Nan Li
- School of Environmental Science and Engineering, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China; (H.W.); (M.Z.); (N.L.); (G.Q.)
| | - Guixiang Quan
- School of Environmental Science and Engineering, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China; (H.W.); (M.Z.); (N.L.); (G.Q.)
| | - Jinlong Yan
- School of Environmental Science and Engineering, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China; (H.W.); (M.Z.); (N.L.); (G.Q.)
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Lee SH, Takahashi Y. Carbothermal preparation of magnetic-responsible ferrihydrite based on Fe-rich precipitates for immobilization of arsenate and antimonate: Batch and spectroscopic studies. CHEMOSPHERE 2019; 237:124489. [PMID: 31549638 DOI: 10.1016/j.chemosphere.2019.124489] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 07/28/2019] [Accepted: 07/29/2019] [Indexed: 06/10/2023]
Abstract
The present study provides the starch-mediated carbothermal preparation of magnetic-responsible ferrihydrite (MFHP) based on Fe-rich precipitates which is recovered by mine drainage for immobilization of arsenate and antimonate in water. Fe K-edge X-ray absorption near edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) represented partial transformation from ferrihydrite to magnetite in MFHP due to the carbothermal reduction process, resulting in an effective saturation magnetism (= 19.2 emu/g). As and Sb K-edge EXAFS revealed that arsenate ion combines onto the surface of MFHP as inner-sphere binuclear bidentate surface complex, and antimonate forms inner-sphere mononuclear bidentate complex. In addition, the leachability by toxicity characteristic leaching procedure (TCLP) implies the environmental friendly preparation method for preparing magnetic-responsible adsorbents using mining waste.
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Affiliation(s)
- Sang-Ho Lee
- Korea Hydro & Nuclear Power (KHNP) Central Research Institute, 70, 1312-gil, Yuseong-daero, Yuseong-gu, Daejeon 34101, Republic of Korea; Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan.
| | - Yoshio Takahashi
- Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, Tokyo, 113-0033, Japan.
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New insights into the activity of green supported nanoscale zero-valent iron composites for enhanced acid blue-25 dye synergistic decolorization from aqueous medium. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111628] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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43
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Midik Ertosun F, Cellat K, Eren O, Gül Ş, Kuşvuran E, Şen F. Comparison of nanoscale zero-valent iron, fenton, and photo-fenton processes for degradation of pesticide 2,4-dichlorophenoxyacetic acid in aqueous solution. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1554-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Pirsaheb M, Moradi S, Shahlaei M, Wang X, Farhadian N. Simultaneously implement of both weak magnetic field and aeration for ciprofloxacin removal by Fenton-like reaction. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 246:776-784. [PMID: 31228691 DOI: 10.1016/j.jenvman.2019.06.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/14/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
This study evaluates the ability of heterogeneous Fenton-like reaction (nano zero-valent iron (NZVI)/H2O2) in combination with weak magnetic field (WMF) under continuous oxygen supply by air bubbling for pollutant abatement (using ciprofloxacin as a model pollutant). The considered operating variables were initial pH, catalyst dosage, reaction time and different intensities of magnetic field. Results indicated that NZVI/H2O2/aeration/weak magnetic field could effectively decompose ciprofloxacin at neutral condition and higher removal rates are observed at higher pH and NZVI concentrations. Superimposing a weak magnetic field leads to 20% enhancement in ciprofloxacin removal by catalytic Fenton under aeration condition. Employing simultaneously magnetic field induction and aeration exhibit excellent capability to the NZVI oxidation and significantly increased the dissolution rate of iron. Based on Fourier transform infrared spectroscopy, transformation products of NZVI are Fe3O4 and FeO(OH). The faster mass transport due to Lorentz and field gradient force, more oxygen diffusion to the iron surface and promoted electrochemical reactions results in more OH° production. Generation of weak magnetic field by permanent magnets and using aeration for both mixing and in situ oxygen supply significantly enhanced the Fenton reaction performance. This combination technology doesn't need any energy input and costly chemicals hence can be used easily for wastewater treatment applications.
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Affiliation(s)
- Meghdad Pirsaheb
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sajad Moradi
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohsen Shahlaei
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Xiangke Wang
- College of Environmental Science and Engineering, North China Electric Power University, Beijing, 102206, PR China
| | - Negin Farhadian
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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45
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Lv X, Qin X, Wang K, Peng Y, Wang P, Jiang G. Nanoscale zero valent iron supported on MgAl-LDH-decorated reduced graphene oxide: Enhanced performance in Cr(VI) removal, mechanism and regeneration. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:176-186. [PMID: 30921568 DOI: 10.1016/j.jhazmat.2019.03.091] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/25/2019] [Accepted: 03/20/2019] [Indexed: 06/09/2023]
Abstract
The scaled application of nanoscale zero-valent iron nanoparticles (nZVI or Fe° NPs) in environmental remediation is challenged by easy surface passivation and particle aggregation. To improve this situation and enhance their performance in Cr(VI) removal from water phase, we present one novel strategy to hybridize nZVI with layered double hydroxide (LDH) decorated reduced graphene oxide (rGO). The as-prepared ternary (Fe@LDH/rGO) composites possess better dispersibility, improved hydrophilicity and more positive surfaces that allows higher removal efficiency and capacity for Cr(VI) oxyanions. Composition proportion are optimized and influences of surroundings (solution pH, Cr(VI) concentration and temperature) are evaluated. Also, we demonstrate that Fe@LDH/rGO can be reused with suitable post-treatments, which combines alkaline solution desorption and NaBH4 revivification possess. Cr desorption and Fe leaching ratio during regeneration should be critical indicators that determine the recovery efficiency. Synergistic effect within this ternary system not only contributes to its superiorities in stability, but also continuous iron corrosion via the formation of micro Fe-C batteries, where rGO acts as cathode and alternative electron conductor. The present work suggests great potentials of Fe@LDH/rGO composites in groundwater remediation.
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Affiliation(s)
- Xiaoshu Lv
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Xiaofeng Qin
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Kaifeng Wang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Yiyin Peng
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Peng Wang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China
| | - Guangming Jiang
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing 400067, China.
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46
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Zhou J, Zhang C, Niu T, Huang R, Li S, Sun J, Wang Y. Facile synthesis of reusable magnetic Fe/Fe3C/C composites from renewable resources for super-fast removal of organic dyes: Characterization, mechanism and kinetics. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.04.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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47
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Li B, Yin W, Xu M, Tan X, Li P, Gu J, Chiang P, Wu J. Facile modification of activated carbon with highly dispersed nano-sized α-Fe 2O 3 for enhanced removal of hexavalent chromium from aqueous solutions. CHEMOSPHERE 2019; 224:220-227. [PMID: 30822728 DOI: 10.1016/j.chemosphere.2019.02.121] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 05/22/2023]
Abstract
Activated carbon-coated α-Fe2O3 nanoparticles (nFe2O3@AC) were synthesized by a facile impregnation method to enhance hexavalent chromium (Cr(VI)) removal from water. The SEM images confirmed that α-Fe2O3 particles ranging from 90 to 500 nm were dispersedly loaded on the AC, which successfully amended Cr(VI) removal. The nFe2O3@AC was able to remove Cr(VI) with a 3 times higher efficiency of 94% in comparison with the AC. After adsorption, Cr(VI) reduction coupled with AC oxidation and low soluble (CrxFe1-x)(OH)3 precipitates were eventually formed. The Cr(VI) removal process was pH-dependent and could be well fitted to pseudo second-order kinetics. The nFe2O3@AC could be easily regenerated by 0.1 M HCl and showed a good stability as an 80% Cr(VI) removal efficiency was recorded after 4 desorption-adsorption cycles. In addition, this composite had a promising potential for repeated utilization because the AC of the adsorbed nFe2O3@AC could be refreshed and remodified with nFe2O3 after stripping all the nFe2O3 and (CrxFe1-x)(OH)3 precipitates from its surface by 1 M HCl and a Cr(VI) removal efficiency of 86% could be achieved. Our results demonstrated that the use of nFe2O3 is an efficient and promising method to modify AC and enhance Cr(VI) removal form aqueous solutions.
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Affiliation(s)
- Bing Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Weizhao Yin
- School of Environment, Jinan University, Guangzhou, 510632, PR China
| | - Meng Xu
- Poten Environment Group Co., Ltd, Beijing, 100082, PR China
| | - Xueyun Tan
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Ping Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Jingjing Gu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Penchi Chiang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Jinhua Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; The Key Laboratory of Environmental Protection and Eco-Remediation of Guangdong Regular Higher Education Institutions, Guangzhou, 510006, PR China.
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48
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Liu P, Wang X, Ma J, Liu H, Ning P. Highly efficient immobilization of NZVI onto bio-inspired reagents functionalized polyacrylonitrile membrane for Cr(VI) reduction. CHEMOSPHERE 2019; 220:1003-1013. [PMID: 33395787 DOI: 10.1016/j.chemosphere.2018.12.163] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 12/06/2018] [Accepted: 12/22/2018] [Indexed: 06/12/2023]
Abstract
To provide superior substrates and determine the specific species of immobilized nano zero-valent iron (NZVI) system, polyacrylonitrile (PAN) membrane was functionalized by bio-inspired polydopamine (PDA) and poly(l-DOPA) (PDOPA) for efficient immobilization of NZVI. The synthesized composites were denoted as PAN/PDA-NZVI (PPN) and PAN/PDOPA-NZVI (PON), respectively. Analyses of XRD, SEM/EDS and XPS show that the aggregation and release of iron nanoparticles had been successfully controlled by improving membrane hydrophilcity and iron-chelating capacity via the graft of functionalized groups (i.e. OH and COOH) of PDA and PDOPA on PAN membrane. Both PPN and PON composites exhibited superior reactivity for Cr(VI) removal (Cr(VI) removal efficiency and reaction rate were 2.21-2.22 and 9.90-10.14 times higher than that of bare NZVI, respectively). The stability and recyclability of PPN and PON composites could be maintained over repeated cycles. Further analyses indicate that PON is more capable for Cr(VI) elimination than PPN due to the proprietary carboxyl of l-DOPA. With the addition of 1,10-phenanthroline, membrane-chelated Fe(II) was determined to be the major species in Cr(VI) removal system, accounting for 56.9% and 53.8% with regard to PPN and PON composites, and Fe0 was responsible for the reduction of residual Cr(VI). Analyse of reacted composites revealed that Cr(VI) was completely converted into Cr(III), followed by formation of dominant Cr(III)/Fe(III) (oxy)hydroxides and partial desorption from NZVI reactive sites. This study suggested that both synthesized PPN and PON composites have potentials for Cr(VI)-contaminated wastewater treatment.
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Affiliation(s)
- Peng Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Xiangyu Wang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Jun Ma
- State Key Laboratory of Urban Water Resources and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Huiling Liu
- State Key Laboratory of Urban Water Resources and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Ping Ning
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
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Gheju M, Balcu I. Sustaining the efficiency of the Fe(0)/H 2O system for Cr(VI) removal by MnO 2 amendment. CHEMOSPHERE 2019; 214:389-398. [PMID: 30268895 DOI: 10.1016/j.chemosphere.2018.09.129] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 09/18/2018] [Accepted: 09/20/2018] [Indexed: 06/08/2023]
Abstract
This study aims to provide new knowledge regarding the effect of MnO2 co-presence on efficiency of Cr(VI) removal with Fe(0). Non-disturbed batch experiments (≤40 days) were conducted using two types of Fe(0) (milli- and micro-sized), two Cr(VI) concentrations (5 and 100 mg/L), in three different systems ("Fe(0) only", "MnO2 only", and "Fe(0) + MnO2"), at an initial pH value of 6.9. Compared to "Fe(0) only" system, the efficiency and rate of Cr(VI) removal were highly promoted in "Fe(0) + MnO2" system; moreover, while for the "Fe(0) only" system removal of Cr(VI) was severely hindered by increasing Cr(VI) concentration, in "Fe(0) + MnO2" system comparable high efficacies were noticed both at low and high concentration. Recycling experiments indicated that total Cr(VI) removal capacity of "Fe(0) + MnO2" system was up to 48.1 times greater than of the "Fe(0) only" system. Enhanced removal of Cr(VI) with Fe(0) was achieved at low doses of MnO2, with an optimal mass ratio Fe(0):MnO2 of 4:1. The favorable synergistic effect observed in "Fe(0) + MnO2" system was ascribed to capacity of MnO2 to accelerate Fe(0) oxidative dissolution, and to generate supplementary amounts of secondary adsorbents/reductants with removal ability towards Cr(VI). This study provides compelling evidence that "Fe(0) + MnO2" system could represent a highly efficient and cost-effective alternative for the abatement of Cr(VI) aqueous pollution.
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Affiliation(s)
- Marius Gheju
- Politehnica University Timisoara, Faculty of Industrial Chemistry and Environmental Engineering, Bd. V. Parvan Nr. 6, 300223, Timisoara, Romania.
| | - Ionel Balcu
- National Institute for Research and Development in Electrochemistry and Condensed Matter, Str. Dr. Aurel Paunescu Podeanu Nr. 144, 300587, Timisoara, Romania
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50
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Continuous removal of Cr(VI) and Orange II over a novel Fe0-NaA zeolite membrane catalyst. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.07.030] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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