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Li Z, Wang L, Wu J, Xu Y, Wang F, Tang X, Xu J, Ok YS, Meng J, Liu X. Zeolite-supported nanoscale zero-valent iron for immobilization of cadmium, lead, and arsenic in farmland soils: Encapsulation mechanisms and indigenous microbial responses. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114098. [PMID: 32041084 DOI: 10.1016/j.envpol.2020.114098] [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: 10/18/2019] [Revised: 01/22/2020] [Accepted: 01/28/2020] [Indexed: 06/10/2023]
Abstract
Zeolite-supported nanoscale zero-valent iron (Z-NZVI) has great potential for metal(loid) removal, but its encapsulation mechanisms and ecological risks in real soil systems are not completely clear. We conducted long-term incubation experiments to gain new insights into the interactions between metal(loid)s (Cd, Pb, As) and Z-NZVI in naturally contaminated farmland soils, as well as the alteration of indigenous bacterial communities during soil remediation. With the pH-adjusting and adsorption capacities, 30 g kg-1 Z-NZVI amendment significantly decreased the available metal(loid) concentrations by 10.2-96.8% and transformed them into strongly-bound fractions in acidic and alkaline soils after 180 d. An innovative magnetic separation of Z-NZVI from soils followed by XRD and XPS characterizations revealed that B-type ternary complexation, heterogeneous coprecipitation, and/or concurrent redox reactions of metal(loid)s, especially the formation of Cd3(AsO4)2, PbFe2(AsO4)2(OH)2, and As0, occurred only under specific soil conditions. Sequencing of 16S rDNA using Illumina MiSeq platform indicated that temporary shifts in iron-resistant/sensitive, pH-sensitive, denitrifying, and metal-resistant bacteria after Z-NZVI addition were ultimately eliminated because soil characteristics drove the re-establishment of indigenous bacterial community. Meanwhile, Z-NZVI recovered the basic activities of bacterial DNA replication and denitrification functions in soils. These results confirm that Z-NZVI is promising for the long-term remediation of metal(loid)s contaminated farmland soil without significant ecotoxicity.
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Affiliation(s)
- Zhangtao Li
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Lu Wang
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Jizi Wu
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Yan Xu
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Fan Wang
- College of Life & Environmental Sciences, Hangzhou Normal University, Hangzhou, 310036, China
| | - Xianjin Tang
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Jianming Xu
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Jun Meng
- School of Environmental and Natural Resources, Zhejiang University of Science and Technology, Hangzhou, 310023, China
| | - Xingmei Liu
- College of Environmental & Resource Sciences, Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, Hangzhou, 310058, China.
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202
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Li S, Zou D, Li L, Wu L, Liu F, Zeng X, Wang H, Zhu Y, Xiao Z. Evolution of heavy metals during thermal treatment of manure: A critical review and outlooks. CHEMOSPHERE 2020; 247:125962. [PMID: 32069728 DOI: 10.1016/j.chemosphere.2020.125962] [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: 08/11/2019] [Revised: 01/14/2020] [Accepted: 01/18/2020] [Indexed: 06/10/2023]
Abstract
Manure treatment has become a focal issue in relation to current national policies on environmental and renewable energy matters. Heavy metals can be excreted with the animal manure, contributing to pollution of soil and water. Therefore, animal manure needs proper treatment before application to agricultural soils. Here, we review the species transformation of HMs and fate during incineration, pyrolysis, gasification and hydrothermal processing of animal manures. During thermal processes, 75%-90% of thermally stable HMs such as Cr, Ni, and Mn were concentrated in the solid-phase. HMs with less thermal stability such as Cd, As, Hg, and Pb are inclined to concentrate in the aqueous phase and gas phase, accounting for less than 5% of their total concentrations. In general, thermal processes transform HMs in the exchangeable fraction with high biotoxicity to oxidizable fraction or residual fraction with less bioavailability. In addition, the operating conditions and co-processing with other materials may influence the species transformation of HMs. Finally, recommendations for future research on the proper disposal and utilization of animal manure are proposed. More large-scale experiments are required to elucidate the precise mechanism behind the immobilization of HMs. The influence of additives (catalysts and HM stabilizers) and the influence of the type of solvent on HM transformation needs further study.
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Affiliation(s)
- Shuhui Li
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Dongsheng Zou
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Longcheng Li
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Ling Wu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Fen Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Xinyi Zeng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Hua Wang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Yufeng Zhu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China
| | - Zhihua Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan, 410128, PR China; Key Laboratory for Rural Ecosystem Health in Dongting Lake Area of Hunan Province, Changsha, 410128, PR China; Hunan Engineering Laboratory for Pollution Control and Waste Utilization in Swine Production, Changsha, 410128, PR China.
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203
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Wu J, Li Z, Huang D, Liu X, Tang C, Parikh SJ, Xu J. A novel calcium-based magnetic biochar is effective in stabilization of arsenic and cadmium co-contamination in aerobic soils. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:122010. [PMID: 31927353 DOI: 10.1016/j.jhazmat.2019.122010] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 12/30/2019] [Accepted: 12/31/2019] [Indexed: 05/22/2023]
Abstract
This study developed a novel calcium-based magnetic biochar by pyrolysing rice straw mixed with calcium carbonate and iron oxide for stabilization of contamination of multiple metals. A 160-day incubation study was conducted to investigate its performance in stabilization of cadmium and arsenic co-contamination in soil. Both biochar and Ca-MBC treatments increased soil pH, decreased the bioavailability of cadmium. Ca-MBC decreased but biochar enhanced the bioavailability of arsenic. The BCR (European Community Bureau of Reference) sequential extraction confirmed Ca-MBC facilitated the transformation of the unstable fraction of arsenic to stable fractions. The stabilization mechanisms were explored through synchrotron-based micro X-ray fluorescence and X-ray absorption near edge structure. The results show that Ca-MBC remediated the dual contamination of arsenic and cadmium through (1) elevated pH and cation exchange capacity (for Cd); (2) the formation of bi-dentate chelate and ternary surface complexes on the surface of iron oxide; (3) enhanced adsorption ability of porous biochar. In addition, Ca-MBC increased the abundance and diversity of bacterial community, and modified the relative abundances of bacterial taxa, leading to a shift of the composition. These new insights provide valuable information for stabilization of co-contamination of arsenic and cadmium in soil using the potential material Ca-MBC.
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Affiliation(s)
- Jizi Wu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Zhangtao Li
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Dan Huang
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Xingmei Liu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China
| | - Caixian Tang
- Department of Animal, Plant and Soil Sciences, La Trobe University, Melbourne Campus, Bundoora, VIC, 3086, Australia
| | - Sanjai J Parikh
- Department of Land, Air and Water Resources, University of California, Davis, One Shields Avenue, Davis, CA, USA
| | - Jianming Xu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.
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204
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Souza LRR, Pomarolli LC, da Veiga MAMS. From classic methodologies to application of nanomaterials for soil remediation: an integrated view of methods for decontamination of toxic metal(oid)s. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:10205-10227. [PMID: 32064582 DOI: 10.1007/s11356-020-08032-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
Soil pollution with toxic elements is a recurrent issue due to environmental disasters, fossil fuel burning, urbanization, and industrialization, which have contributed to soil contamination over the years. Therefore, the remediation of toxic metals in soil is always an important topic since contaminated soil can affect the environment, agricultural safety, and human health. Many remediation methods have been developed; however, it is essential to ensure that they are safe, and also take into account the limitation of each methodology (including high energy input and generation of residues). This scenario has motivated this review, where we explore soil contamination with arsenic, lead, mercury, and chromium and summarize information about the methods employed to remediate each of these toxic elements such as phytoremediation, soil washing, electrokinetic remediation, and nanoparticles besides elucidating some mechanisms involved in the remediation. Considering all the discussed techniques, nowadays, different techniques can be combined together in order to improve the efficiency of remediation besides the new approach of the techniques and the use of one technique for remediating more than one contaminant.
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205
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Du Y, Dai M, Cao J, Peng C, Ali I, Naz I, Li J. Efficient removal of acid orange 7 using a porous adsorbent-supported zero-valent iron as a synergistic catalyst in advanced oxidation process. CHEMOSPHERE 2020; 244:125522. [PMID: 31830643 DOI: 10.1016/j.chemosphere.2019.125522] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/26/2019] [Accepted: 11/29/2019] [Indexed: 06/10/2023]
Abstract
This study focuses on the synthesis of granular red mud reinforced by zero-valent iron (Fe@GRM) and its application for the removal acid orange 7 (AO7) from aqueous solution. Then ZVI is employed as a catalyst for the activation of persulfate (PS) to produce sulfate radicals (SO4•-) that are produced at 900 °C in an anoxic atmosphere using the direct reduction of iron oxide in the red mud with maize straw as the reductant. Furthermore, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) are used to illustrate the morphology and porous structure of the Fe@GRM. The X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) revealed that Fe@GRM was loaded with zero-valent iron. This characterization confirmed that the Fe@GRM was a porous structure material that contained zero-valent iron. The influence of conditions for AO7 elimination, including initial pH, Fe@GRM dosage, initial AO7 concentrations, and temperature, is also investigated. The removal efficiency of AO7 was 90.78% using Fe@GRM/PS, while only 18.15% was removed when Fe@GRM was used alone. The degradation kinetics were well fitted to a pseudo-first-order kinetic model, and the rate of removal increased with temperature, demonstrating an endothermic elimination process. The Arrhenius activation energy of the process was 20.77 kJ/mol, which indicated that the reduction of AO7 was a diffusion-mediated reaction. Fe@GRM is a low-cost material that demonstrated outstanding performance with great potential for wastewater treatment.
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Affiliation(s)
- Yufeng Du
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Min Dai
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, 526061, China.
| | - Jingfei Cao
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, 526061, China.
| | - Changsheng Peng
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, 526061, China.
| | - Imran Ali
- Department of Environmental Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Iffat Naz
- Department of Biology, Deanship of Educational Services, Qassim University, Buraidah, 51452, Saudi Arabia.
| | - Juying Li
- Department of Environmental Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
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206
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Zhao J, Yang X, Liang G, Wang Z, Li S, Wang Z, Xie X. Effective removal of two fluoroquinolone antibiotics by PEG-4000 stabilized nanoscale zero-valent iron supported onto zeolite (PZ-NZVI). THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 710:136289. [PMID: 31923667 DOI: 10.1016/j.scitotenv.2019.136289] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 12/02/2019] [Accepted: 12/21/2019] [Indexed: 04/15/2023]
Abstract
In this work, nanoscale zero-valent iron (NZVI) was synthesized via liquid phase reduction method with surfactant polyethylene glycol (PEG-4000) modified and supported onto zeolite to prepare PZ-NZVI composite. SEM-EDS, XPS, BET.etc. characterizations indicated that the sphere NZVI particles were loaded on the zeolite successfully and the aggregation was restrained. The adsorption performance of PZ-NZVI for norfloxacin (NOR) or ofloxacin (OFL), two typical fluoroquinolones (FQs), from water was conducted. The equilibrium studies were demonstrated using Langmuir, Freundlich, Temkin and Elovich isotherms and better agreement was attained with the Temkin model. Compared with NZVI and zeolite, PZ-NZVI had higher FQs removal efficiency, and the Langmuir maximum adsorption capacity was 54.67 mg g-1 (NOR) and 48.88 mg g-1 (OFL). The kinetic parameters displayed that two FQs adsorption onto PZ-NZVI followed pseudo-second-order kinetic model. The thermodynamic analysis suggested the adsorption process was spontaneous and exothermic. In addition, the adsorption tests were executed at different influence factors and the adsorbent PZ-NZVI was suitable for a wide pH range (4-10) with the FQs (10 mg L-1) removal efficiency above 90% in 1 h. Furthermore, it was found that PZ-NZVI can be effortlessly separated from mixed solutions using external magnetic field. Finally, the process of FQs adsorbed onto PZ-NZVI was attributed to the surface complexion (forming bidentate complexes), hydrophobic interaction, pore filling and electrostatic interaction.
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Affiliation(s)
- Jing Zhao
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
| | - Xing Yang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
| | - Guiwei Liang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
| | - Zhaowei Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China.
| | - Shan Li
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
| | - Zirun Wang
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
| | - Xiaoyun Xie
- College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province 730000, China
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207
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Cheng J, Zhan C, Wu J, Cui Z, Si J, Wang Q, Peng X, Turng LS. Highly Efficient Removal of Methylene Blue Dye from an Aqueous Solution Using Cellulose Acetate Nanofibrous Membranes Modified by Polydopamine. ACS OMEGA 2020; 5:5389-5400. [PMID: 32201829 PMCID: PMC7081408 DOI: 10.1021/acsomega.9b04425] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 02/13/2020] [Indexed: 05/24/2023]
Abstract
A new type of deacetylated cellulose acetate (DA)@polydopamine (PDA) composite nanofiber membrane was fabricated by electrospinning and surface modification. The membrane was applied as a highly efficient adsorbent for removing methylene blue (MB) from an aqueous solution. The morphology, surface chemistry, surface wettability, and effects of operating conditions on MB adsorption ability, as well as the equilibrium, kinetics, thermodynamics, and mechanism of adsorption, were systematically studied. The results demonstrated that a uniform PDA coating layer was successfully developed on the surface of DA nanofibers. The adsorption capacity of the DA@PDA nanofiber membrane reached up to 88.2 mg/g at a temperature of 25 °C and a pH of 6.5 after adsorption for 30 h, which is about 8.6 times higher than that of DA nanofibers. The experimental results showed that the adsorption behavior of DA@PDA composite nanofibers followed the Weber's intraparticle diffusion model, pseudo-second-order model, and Langmuir isothermal model. A thermodynamic analysis indicated that endothermic, spontaneous, and physisorption processes occurred. Based on the experimental results, the adsorption mechanism of DA@PDA composite nanofibers was also demonstrated.
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Affiliation(s)
- Jiaqi Cheng
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Conghua Zhan
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Jiahui Wu
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Zhixiang Cui
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Junhui Si
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Qianting Wang
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Xiangfang Peng
- School
of Materials Science and Engineering, Fujian
University of Technology, Fuzhou, Fujian 350118, China
- Fujian
Provincial Key Laboratory in the Universities of Polymer Materials
and Production, Fuzhou, Fujian 350118, China
| | - Lih-Sheng Turng
- Wisconsin
Institutes for Discovery, University of
Wisconsin−Madison, Madison, Wisconsin 53715, United States
- Department
of Mechanical Engineering, University of
Wisconsin−Madison, Madison, Wisconsin 53706, United States
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208
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Li Y, Li H, Liu F, Zhang G, Xu Y, Xiao T, Long J, Chen Z, Liao D, Zhang J, Lin L, Zhang P. Zero-valent iron-manganese bimetallic nanocomposites catalyze hypochlorite for enhanced thallium(I) oxidation and removal from wastewater: Materials characterization, process optimization and removal mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2020; 386:121900. [PMID: 31896005 DOI: 10.1016/j.jhazmat.2019.121900] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 11/30/2019] [Accepted: 12/13/2019] [Indexed: 06/10/2023]
Abstract
Nano zero-valent metals adsorption coupled with advanced oxidation for environmental pollutants removal has been gaining attention recently. In this study, zero-valent iron-manganese (nZVIM) bimetallic nanocomposites were prepared via one-pot borohydride reduction and coupled with hypochlorite (ClO-) oxidation for enhanced thallium (Tl) removal from wastewater. Amorphous nZVIM nanoparticles were successfully synthesized, with a specific surface area of 106.89 m2/g, and a saturation magnetization of 65.16 emu/g. In comparison with the nZVIM adsorption or ClO- oxidation alone, the hybrid nZVIM/ClO- process achieved much faster Tl(I) removal rate over a wide pH range from 6 to 10. Maximum Tl(I) removal capacity was as high as 990.0 mg/g. The oxidation-induced adsorption for Tl(I) removal well followed the pseudo-first kinetic order model. Stable and effective adsorbent regeneration was achieved during the cyclic adsorption-desorption tests. This process also had high resistance to the interference of external cations, can act as an effective pretreatment for Tl(I) removal from the actual saline industrial wastewater. The main mechanisms for Tl(I) removal were found to be oxidation, surface precipitation, pore retention, and surface complexation. The nZVIM coupled with ClO- approach has great potential for Tl(I) removal from wastewater, and its application in other fields is highly anticipated.
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Affiliation(s)
- Yuting Li
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Huosheng Li
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
| | - Fengli Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China
| | - Gaosheng Zhang
- Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China
| | - Yanhong Xu
- Key Laboratory of Three Gorges Reservoir Region's Eco-Environments of MOE, Chongqing University, Chongqing 400045, China
| | - Tangfu Xiao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jianyou Long
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Zexin Chen
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Dandan Liao
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Jiajun Zhang
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Lianhua Lin
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China
| | - Ping Zhang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
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209
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Yang D, Wang L, Li Z, Tang X, He M, Yang S, Liu X, Xu J. Simultaneous adsorption of Cd(II)andAs(III)by a novel biochar-supported nanoscale zero-valent iron in aqueous systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134823. [PMID: 31780167 DOI: 10.1016/j.scitotenv.2019.134823] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 09/25/2019] [Accepted: 10/03/2019] [Indexed: 06/10/2023]
Abstract
Biochar-supported nanoscale zero-valent iron (nZVI-BC) is a promising material for Cd(II) and As(III) removal from aqueous systems. In this study, simplified nZVI-BC composites were successfully synthesized and characterized via scanning electron microscopy (SEM), X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectrometry (XPS), and Fourier transform infrared spectroscopy (FTIR) to understand the underlying adsorption mechanism. SEM and FTIR confirmed that nZVI particles were distributed evenly on the biochar surface. XRD and XPS revealed that metal ions were separated from solutions via electrostatic adsorption, complexation, oxidation, precipitation/co-precipitation, and the formation of type B ternary surface complex. Batch experiments showed that nZVI-BC (1:1) had a high removal efficiency in a wide pH range of 5.0-8.0 for Cd(II) and 3.0-8.0 for As(III), the maximum Cd(II) and As(III) adsorption capacities were 33.81 and 148.5 mg/g within 2 and 1 h, respectively. Additionally, synergisticeffects considerably enhanced the adsorption capacity of nZVI-BC(1:1) in mixed adsorption systems, the adsorption capacities of Cd(II) and As(III) reached 179.9 and 158.5 mg/g, respectively. Hence, nZVI-BC(1:1) is an ideal candidate for Cd(II) and As(III) pollution treatment.
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Affiliation(s)
- Dong Yang
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Lu Wang
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Zhangtao Li
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Xianjin Tang
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Mingjiang He
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Shiyan Yang
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
| | - Xingmei Liu
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China.
| | - Jianming Xu
- College of Environmental & Resource Sciences of Zhejiang University, Hangzhou 310058, China; Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment, Hangzhou 310058, China
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210
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Amino-functionalized graphene oxide for Cr(VI), Cu(II), Pb(II) and Cd(II) removal from industrial wastewater. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0009] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractAmino-functionalized graphene oxide (GO-NH2) was synthesized by grafting (3-aminopropyl) triethoxysilane on the graphene oxide (GO) surface. The GO-NH2 with high surface area and numerous active sites can efficiently adsorb Cr(VI), Cu(II), Pb(II) and Cd(II) ions. The maximum adsorption capacities of GO-NH2 for Cr(VI), Cu(II), Pb(II) and Cd(II) were 280.11, 26.25, 71.89 and 10.04 mg g−1, respectively. The pseudo-first-order and pseudo-second-order kinetic models were employed to describe the kinetic processes. The experimental data agreed well with the pseudo-second-order kinetic equation, and the adsorption of heavy metals onto GO-NH2 occurs via chemical adsorption. The characteristics of Cr(VI), Cu(II), Pb(II) and Cd(II) in the GO-NH2 adsorption processes were analyzed using the Langmuir and Freundlich isotherm models. The adsorption processes of Pb(II) and Cd(II) on GO-NH2 were fit by the Langmuir model. The Freundlich isotherm model was well correlated to Cr(VI) and Cu(II). The GO-NH2 is a promising material for the removal of heavy metal ions from industrial wastewater. This study provides an effective pathway to process industrial wastewater, and the GO-NH2 has a good adsorption effect for the treatment of heavy metals in industrial wastewater.
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211
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Tan X, Wei W, Xu C, Meng Y, Bai W, Yang W, Lin A. Manganese-modified biochar for highly efficient sorption of cadmium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:9126-9134. [PMID: 31916167 DOI: 10.1007/s11356-019-07059-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
In this study, corn stalk was modified by manganese (Mn) before (MBC1) and after (MBC2) pyrolysis at different temperatures (400~600 °C) under anaerobic conditions for Cd sorption in both water and soil. Batch experiments in aqueous solution were conducted to evaluate the optimum sorption capability by biochar with and without manganese-modified. Both types of manganese modification can improve the sorption capacity of Cd(II) on biochar, which is superior to the corresponding pristine biochar without modification, especially, pyrolyzed at 500 °C with 5:1 modification ratio. Under the optimal preparation conditions, the sorption percentage on MBC2 was 11.01% higher than that of MBC1. The maximum sorption capacity of MBC2 was 191.94 mg g-1 calculated by isotherm model. The performance of MBC2 was also verified in soil stabilization experiments in Cd-contaminated soil. We can conclude from the results of BCR extraction that all the application rates of MBC2 (1%, 2%, and 3%) can reduce the mild acid-soluble fraction Cd. The reducible, oxidizable, and residual fraction Cd showed an upward trend, thus controlling the migration, transformation, and enrichment of Cd in soil. The characteristic analysis showed biochar has more irregular fold and more particle-aggregated surface after modification. The main components of these aggregated particles are manganese oxides (MnOx) with high sorption capacity, such as the MnOx crystal structure loaded on MBC2 is a mixed structure of δ-MnO2 and MnO. However, these particles may block the biochar pores, or some of the pores may collapse at high temperatures during the modification process. The specific surface area was reduced, even if the sorption effect of MBC was strongly enhanced. Meanwhile, under the action of the secondary pyrolysis of MBC2 modification process, the MBC2 has a higher degree of aromatization with more potential active sorption sites for Cd. The study concluded that the MBC2 could be a promising amendment for Cd in both water and soil real field applications.
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Affiliation(s)
- Xiao Tan
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China
| | - Wenxia Wei
- Beijing Key Laboratory of Industrial Land Contamination and Remediation, Environmental Protection Research Institute of Light Industry, Beijing, 100089, People's Republic of China
| | - Congbin Xu
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yue Meng
- Beijing Management Division of North Grand Canal, Beijing, 101100, People's Republic of China
| | - Wenrong Bai
- Beijing Management Division of North Grand Canal, Beijing, 101100, People's Republic of China
| | - Wenjie Yang
- Chinese Academy for Environmental Planning, Beijing, 100012, People's Republic of China.
| | - Aijun Lin
- College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, People's Republic of China.
- Qinhuangdao Bohai Biological Research Institute of Beijing University of Chemical Technology, Qinhuangdao, 100012, Hebei, People's Republic of China.
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212
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Wang YN, Tsang YF, Wang H, Sun Y, Song Y, Pan X, Luo S. Effective stabilization of arsenic in contaminated soils with biogenic manganese oxide (BMO) materials. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 258:113481. [PMID: 31859124 DOI: 10.1016/j.envpol.2019.113481] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Revised: 09/27/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The role of biogenic manganese oxide (BMO) materials on the stabilization of arsenic (As) in contaminated soil was investigated. Experimental results indicated that the addition of BMO was proved to be highly effective to stabilize As in soils. Bioavailable As content was decreased from 4.56 mg kg-1 in the control samples to 1.72-1.86 mg kg-1 in BMO-treated soils. X-ray absorption near edge structure (XANES) results confirmed that BMO was mainly responsible for oxidizing As(III) to As(V). Sequential extraction results indicated that the transformation of As fractions was from non-specifically adsorbed fraction to poorly-crystalline hydrous oxides fraction and residual fraction, which can decrease the risk of As in contaminated soils. Moreover, BMO had a higher efficiency in stabilizing As than two types of abiotic Mn oxides. High throughput sequencing analysis indicated that the bacterial community and diversity were significantly changed after BMO treatment. The abundance of Proteobacteria phylum, including Massilia, Phenylobacterium and Sphingomonas genera significantly increased with the increasing amount of BMO. These findings suggested that BMO can be considered as a low cost, high effectiveness and environmental friendliness material for the remediation of As contaminated soils.
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Affiliation(s)
- Ya-Nan Wang
- Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266033, China
| | - Yiu Fai Tsang
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, China
| | - Huawei Wang
- Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266033, China; Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
| | - Yingjie Sun
- Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266033, China
| | - Yi Song
- Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266033, China
| | - Xiangliang Pan
- Xinjiang Key Laboratory of Environmental Pollution and Bioremediation, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
| | - Siyi Luo
- Qingdao Solid Waste Pollution Control and Resource Engineering Research Center, Qingdao University of Technology, School of Environmental and Municipal Engineering, Qingdao 266033, China
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213
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Teng Z, Shao W, Zhang K, Yu F, Huo Y, Li M. Enhanced passivation of lead with immobilized phosphate solubilizing bacteria beads loaded with biochar/ nanoscale zero valent iron composite. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121505. [PMID: 31776085 DOI: 10.1016/j.jhazmat.2019.121505] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Revised: 10/03/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Phosphate solubilizing bacteria (PSBs) can effectively enhance the stability of lead via the formation of insoluble Pb-phosphate compounds. This research presents a bio-beads, which was implemented with the help of a self-designed porous spheres carrier, by immobilized PSBs strains Leclercia adecarboxylata (hereafter referred as L1-5). In addition, the passivation efficiency of lead via bio-beads under different conditions and its mechanism were also investigated in this study. The results indicated that phosphate solubilized by bio-beads could reach 30 mg/L in Ca3(PO4)2 medium containing 1 mM Pb2+, and the highest removal rate of Pb2+ in beef peptone liquid medium could reach 93%, which is better than that of free bacteria. Furthermore, it was also concluded that the lead could be transformed into stable crystal texture, such as Pb5(PO4)3Cl and Pb5(PO4)3OH. Both hydrophobic and hydrophilic groups in the bio-beads could capture Pb2+, which indicated that electrostatic attraction and ion-exchange were also the mechanism of Pb2+ adsorption. All the experimental findings demonstrated that this bio-bead could be consider as an efficient way for the lead immobilization in contaminated soil in the future.
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Affiliation(s)
- Zedong Teng
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Beijing Key Lab for Source Control Technology of Water Pollution. Beijing Forestry University, Beijing 100083, China
| | - Wen Shao
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Department of Geoscience, Eberhard Karls Universität Tübingen, Tübingen 72074, Germany
| | - Keyao Zhang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Beijing Key Lab for Source Control Technology of Water Pollution. Beijing Forestry University, Beijing 100083, China
| | - Fulu Yu
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; School of Chemical Science and Engineering, Tongji University, Shanghai 200940, China
| | - Yaoqiang Huo
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Department of Environmental Science and Engineering, Fudan University, Shanghai 200438, China
| | - Min Li
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Beijing Key Lab for Source Control Technology of Water Pollution. Beijing Forestry University, Beijing 100083, China.
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214
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Baragaño D, Forján R, Welte L, Gallego JLR. Nanoremediation of As and metals polluted soils by means of graphene oxide nanoparticles. Sci Rep 2020; 10:1896. [PMID: 32024880 PMCID: PMC7002751 DOI: 10.1038/s41598-020-58852-4] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 01/22/2020] [Indexed: 11/09/2022] Open
Abstract
The capacity of graphene oxide nanoparticles (nGOx) to reduce or increase As and metals availability in polluted soils was compared with that of zero valent iron nanoparticles (nZVI). The nanomaterials used in this study were characterized by X-ray techniques, CHNS-O analysis, dynamic light scattering, and microscopy procedures such as atomic force microscopy. To assess the capacity of these materials to immobilize pollutants, field samples of two soils were treated with nZVI and nGOx at a range of doses (0.2%, 1% and 5%). Availability tests were then performed. nGOx effectively immobilized Cu, Pb and Cd, but mobilized As and P (even at low doses), in the latter case irrespective of the simultaneous presence of high concentrations of metals. In turn, nZVI promoted notable immobilization results for As and Pb, a poorer result for Cd, and an increased availability for Cu. Soil pH and EC have been slightly affected by nGOx. On the whole, nGOx emerges as a promising option for mobilization/immobilization strategies for soil nanoremediation when combined with other techniques such as phytoremediation.
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Affiliation(s)
- Diego Baragaño
- INDUROT and Environmental Technology, Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres, Asturias, Spain.
| | - Rubén Forján
- INDUROT and Environmental Technology, Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres, Asturias, Spain
| | - Lorena Welte
- Kleinscale S.L., Calle Montoro 4 9D, 28922, Alcorcón, Madrid, Spain
| | - José Luis R Gallego
- INDUROT and Environmental Technology, Biotechnology and Geochemistry Group, Campus de Mieres, Universidad de Oviedo, Mieres, Asturias, Spain
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215
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Chang J, Zhang H, Cheng H, Yan Y, Chang M, Cao Y, Huang F, Zhang G, Yan M. Spent Ganoderma lucidum substrate derived biochar as a new bio-adsorbent for Pb 2+/Cd 2+ removal in water. CHEMOSPHERE 2020; 241:125121. [PMID: 31683424 DOI: 10.1016/j.chemosphere.2019.125121] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/11/2019] [Accepted: 10/13/2019] [Indexed: 06/10/2023]
Abstract
The present study firstly reports spent Ganoderma lucidum substrate derived biochars (SLBCS) for the effective removal of Pb2+/Cd2+ from water. The effects of pyrolysis temperature on the SLBCS characteristics and Pb2+/Cd2+ adsorption mechanism was studied systematically. The surface physicochemical properties of SLBCS were significantly affected by the pyrolysis temperature. The increase in pyrolysis temperature from 250 to 650 °C resulted in a drastic increase in the biochar surface area and the well development of mesoporous structure, which could provide more effective adsorption sites for Pb2+ and Cd2+ onto SLBCS. According to the Langmuir model, the obtained maximum adsorption capacity of Pb2+ onto SL650 reached 262.76 mg g-1, while that of Cd2+ reached 75.82 mg g-1. The adsorption capacities of SL650 for Pb2+ and Cd2+ were even higher than that of other modified biochars. The high adsorption capacity of SL650 for Pb2+, attributed to the precipitation supported by high temperature, benefitted the formation of carbonate minerals. Two possible mechanisms involved in Cd2+ sorption: carbonate precipitation and coordination with π electrons. Desorption of SL650 showed high efficiency for Pb2+, but slightly low efficiency for Cd2+. These results indicate that SL650 can be applied for removing heavy metals, especially Pb2+, from polluted water.
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Affiliation(s)
- Jianning Chang
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Haibo Zhang
- College of Urban and Rural Construction, Shanxi Agricultural University, Taigu, 030801, China
| | - Hongyan Cheng
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China.
| | - Yangyang Yan
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Mingchang Chang
- College of Food Science and Engineering, Shanxi Agricultural University, Taigu, 030801, China; Collaborative Innovation Center of Advancing Quality and Efficiency of Loess Plateau Edible Fungi, Taigu, 030801, China
| | - Yanzhuan Cao
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Fei Huang
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Guosheng Zhang
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
| | - Meng Yan
- College of Resources and Environment, Shanxi Agricultural University, Taigu, 030801, China
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216
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Wang Z, Zhang J, Wen T, Liu X, Wang Y, Yang H, Sun J, Feng J, Dong S, Sun J. Highly effective remediation of Pb(II) and Hg(II) contaminated wastewater and soil by flower-like magnetic MoS 2 nanohybrid. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 699:134341. [PMID: 31678874 DOI: 10.1016/j.scitotenv.2019.134341] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/14/2019] [Accepted: 09/06/2019] [Indexed: 05/13/2023]
Abstract
The efficient enrichment and remediation of heavy metals from realistic wastewater and contaminated soil containing large excess of competitive ions remains a daunting challenge by far. In the present study, flower-like molybdenum disulfide decorated with iron oxide nanoparticles (MoS2/Fe3O4) is designed via a two-step hydrothermal method and mainly applied in the removal of Hg(II) and Pb(II) ions in aqueous environment. Exhaustive morphological, chemical and magnetic characterizations verify the successful formation of magnetic MoS2/Fe3O4. Batch adsorption experiments show that the obtained MoS2/Fe3O4 nanohybrid enables efficient capture of Hg(II) and Pb(II) ions, accompanied by ease-of-separation from solution by simply applying a magnet. In this respect, high adsorption capacities (263.6 mg g-1 for Pb(II) and 428.9 mg g-1 for Hg(II)) can be gained under optimized conditions (pH = 5.0; 298 K; nanohybrid dosage: 0.8 g L-1 and the contact time: 180 min). In addition, the effects of different parameters such as initial Pb(II)/Hg(II) concentration (50-500 mg L-1), temperature (298, 308 and 318 K) and co-existing ions (Zn(II), Cu(II), Cd(II) and Mg(II)) were systematically probed. The favorable adsorption capacity, selectivity and recyclability mainly originates from the strong Hg2+/Pb2+···S2- bonding interactions. Practical application potential of magnetic MoS2/Fe3O4 nanohybrid in realistic lead-acid battery industry wastewater and Pb(II)-contaminated soil is further explored, achieving promising results with high Pb(II) removal efficiency of 99.63% for wastewater and 57.15% for soil. Simple preparation, easy separation and high adsorption capacity would foster thus-designed sulfide-based nanohybrid a promising adsorbent for heavy metal removal from wastewater and contaminated soil.
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Affiliation(s)
- Zongwu Wang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China; College of Environment Engineering, Yellow River Conservancy Technical Institute, Kaifeng Key Laboratory of Green Coating Materials, Kaifeng, Henan 475004, PR China
| | - Jing Zhang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Tao Wen
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, PR China
| | - Xiaolan Liu
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Yifei Wang
- National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, PR China.
| | - Huiying Yang
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Jingyu Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations, Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou 215006, PR China
| | - Jinglan Feng
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China
| | - Shuying Dong
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China.
| | - Jianhui Sun
- MOE Key Laboratory of Yellow River and Huai River Water Environmental and Pollution Control, Henan Key Laboratory for Environmental Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, PR China.
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217
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Ma F, Zhao B, Diao J, Jiang Y, Zhang J. Mechanism of phosphate removal from aqueous solutions by biochar supported nanoscale zero-valent iron. RSC Adv 2020; 10:39217-39225. [PMID: 35518416 PMCID: PMC9057329 DOI: 10.1039/d0ra07391a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 10/20/2020] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study was to investigate the removal mechanism of phosphate by rape straw biochar (RSBC) supported nanoscale zero-valent iron (nZVI).
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Affiliation(s)
- Fengfeng Ma
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730070
- China
| | - Baowei Zhao
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730070
- China
| | - Jingru Diao
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730070
- China
| | - Yufeng Jiang
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730070
- China
| | - Jian Zhang
- School of Environmental and Municipal Engineering
- Lanzhou Jiaotong University
- Lanzhou 730070
- China
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218
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Nie H, Cao C, Xu Z, Tian L. Novel method to remove arsenic and prepare metal arsenic from copper electrolyte using titanium(IV) oxysulfate coprecipitation and carbothermal reduction. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.115919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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219
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Su L, Ma J, Wang J, Jiang W, Zhang WX, Yang J. Site-selective exposure of iron nanoparticles to achieve rapid interface enrichment for heavy metals. Chem Commun (Camb) 2020; 56:2795-2798. [DOI: 10.1039/c9cc09765a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A series of Janus and core–shell nanostructured Fe@PMO are well designed with controllable site-exposure of iron nanoparticles for compared investigation the recovery behavior of heavy metals.
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Affiliation(s)
- Li Su
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering, Donghua University
- Shanghai 201620
- China
| | - Jiaxin Ma
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering, Donghua University
- Shanghai 201620
- China
| | - Jiancheng Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering, Donghua University
- Shanghai 201620
- China
| | - Wan Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering, Donghua University
- Shanghai 201620
- China
| | - Wei-xian Zhang
- College of Environmental Science and Engineering
- State Key Laboratory of Pollution Control and Resources Reuse
- Tongji University
- Shanghai 200092
- China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Materials Science and Engineering, Donghua University
- Shanghai 201620
- China
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220
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Zhang G, Zhang Z. Ir3Pb alloy nanodendrites with high performance for ethanol electrooxidation and their enhanced durability by alloying trace Au. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00233j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Porous Ir3Pb nanodendrites exhibit excellent activity and superior CO2 selectivity for the EOR under acidic conditions, and their durability can be enhanced dramatically by alloying trace Au.
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Affiliation(s)
- Genlei Zhang
- School of Chemistry and Chemical Engineering
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Anhui Province Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering
- Hefei University of Technology
- Hefei
| | - Zhenxi Zhang
- School of Chemistry and Chemical Engineering
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering
- Anhui Province Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering
- Hefei University of Technology
- Hefei
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221
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Soltani R, Marjani A, Hosseini M, Shirazian S. Synthesis and characterization of novel N-methylimidazolium-functionalized KCC-1: A highly efficient anion exchanger of hexavalent chromium. CHEMOSPHERE 2020; 239:124735. [PMID: 31499306 DOI: 10.1016/j.chemosphere.2019.124735] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 08/23/2019] [Accepted: 08/30/2019] [Indexed: 06/10/2023]
Abstract
A key challenge in adsorption process of toxic organic and inorganic species is the design and development of adsorbent materials bearing an abundance of accessible adsorption sites with high affinity to achieve both fast adsorption kinetics and elevated adsorption capacity for toxic contaminants. Herein, a novel anion-exchange adsorbent based on fibrous silica nanospheres KCC-1 was synthesized by a facile hydrothermal-assisted post-grafting modification of KCC-1 with 1-methyl-3- (triethoxysilylpropyl)imidazolium chloride for the first time. Silica fibers with micro-mesoporous structure display the proper combination of features to serve as a potential scaffold for decorating adsorption sites to create desired ion-exchange adsorbent. The obtained N-methylimidazolium-functionalized KCC-1 (MI-Cl-KCC-1) with fibrous nanosphere morphology showed a high surface area (∼241 m2 g-1) and high pore volume (0.81 m2 g-1). The adsorption behaviors of toxic hexavalent chromium from aqueous media by the MI-Cl-KCC-1 were systematically studied using the batch method. The adsorption rate was relatively fast, and MI-Cl-KCC-1 possesses a high capacity for the adsorption of Cr(VI). The maximum Cr(VI) adsorption was obtained at pH 3.0-4.0. Different non-linear isotherm equations were tested for choosing an appropriate adorption isotherm behavior, and the adsorption data for MI-Cl-KCC-1 were consistent with the Langmuir model with a maximum adsorption capacity of 428 ± 8 mg g-1.
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Affiliation(s)
- Roozbeh Soltani
- Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
| | - Azam Marjani
- Department of Chemistry, Arak Branch, Islamic Azad University, Arak, Iran
| | - Mina Hosseini
- Department of Chemistry, University of Isfahan, Isfahan, Iran
| | - Saeed Shirazian
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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222
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Liu Z, Chen G, Xu L, Hu F, Duan X. Removal of Cr(VI) from Wastewater by a Novel Adsorbent of Magnetic Goethite: Adsorption Performance and Adsorbent Characterisation. ChemistrySelect 2019. [DOI: 10.1002/slct.201904125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Zhanmeng Liu
- School of Civil Engineering and ArchitectureEast China Jiao Tong University, Nanchang Jiangxi 330013 China
| | - Gang Chen
- School of Civil Engineering and ArchitectureEast China Jiao Tong University, Nanchang Jiangxi 330013 China
| | - Lichun Xu
- School of Civil Engineering and ArchitectureEast China Jiao Tong University, Nanchang Jiangxi 330013 China
| | - Fengping Hu
- School of Civil Engineering and ArchitectureEast China Jiao Tong University, Nanchang Jiangxi 330013 China
| | - XianYue Duan
- School of Civil Engineering and ArchitectureEast China Jiao Tong University, Nanchang Jiangxi 330013 China
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223
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Baby R, Saifullah B, Hussein MZ. Palm Kernel Shell as an effective adsorbent for the treatment of heavy metal contaminated water. Sci Rep 2019; 9:18955. [PMID: 31831850 PMCID: PMC6908638 DOI: 10.1038/s41598-019-55099-6] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/11/2019] [Indexed: 11/08/2022] Open
Abstract
Heavy metal contamination in water causes severe adverse effects on human health. Millions of tons of kernel shell are produced as waste from oil palm plantation every year. In this study, palm oil kernel shell (PKS), an agricultural waste is utilized as effective adsorbent for the removal of heavy metals, namely; Cr6+, Pb2+, Cd2+ and Zn2+ from water. Different parameters of adsorptions; solution pH, adsorbent dosage, metal ions concentration and contact time were optimized. The PKS was found to be effective in the adsorption of heavy metal ions Cr6+, Pb2+, Cd2+ and Zn2+ from water with percentage removal of 98.92%, 99.01%, 84.23% and 83.45%, respectively. The adsorption capacities for Cr6+, Pb2+, Cd2+ and Zn2+ were found to be 49.65 mg/g, 43.12 mg/g, 49.62 mg/g and 41.72 mg/g respectively. Kinetics of adsorption process were determined for each metal ion using different kinetic models like the pseudo-first order, pseudo-second order and parabolic diffusion models. For each metal ion the pseudo-second order model fitted well with correlation coefficient, R2 = 0.999. Different isotherm models, namely Freundlich and Langmuir were applied for the determination of adsorption interaction between metal ions and PKS. Adsorption capacity was also determined for each of the metal ions. PKS was found to be very effective adsorbent for the treatment of heavy metal contaminated water and short time of two hours is required for maximum adsorption. This is a comprehensive study almost all the parameters of adsorptions were studied in detail. This is a cost effective and greener approach to utilize the agricultural waste without any chemical treatment, making it user friendly adsorbent.
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Affiliation(s)
- Rabia Baby
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang Selangor, 43400, Malaysia
- Education Department, Sukkur IBA University, Sukkur Sindh, 65200, Pakistan
| | - Bullo Saifullah
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang Selangor, 43400, Malaysia
| | - Mohd Zobir Hussein
- Materials Synthesis and Characterization Laboratory, Institute of Advanced Technology, Universiti Putra Malaysia, Serdang Selangor, 43400, Malaysia.
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224
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Yin W, Zhao C, Xu J. Enhanced adsorption of Cd (II) from aqueous solution by a shrimp bran modified Typha orientalis biochar. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:37092-37100. [PMID: 31745770 DOI: 10.1007/s11356-019-06658-x] [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: 06/07/2019] [Accepted: 10/01/2019] [Indexed: 05/13/2023]
Abstract
The biochar which was characterized with well-developed facial structure and O-/N-containing functional groups could effectively remove Cd (II) from water. In this paper, Typha orientalis-based biochar (BCS) with well-developed N containing functional groups was modified with shrimp bran which was rich in crude protein for the first time. There are more well-developed O-/N-containing functional groups in the structure of BCS than that of pure Typha orientalis-based biochar without any modification (BC), and this conclusion was depended on their comparisons of Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), scanning electron microscopy (SEM), elemental analysis (EA), Boehm titration, Fourier transform infrared (FTIR), and other characterization techniques. Moreover, according to the experiment, the phenomenon that the adsorption capacity of Cd(II) on these two adsorbents (BCs) decreased with the increase of solution ionic strength could be carried out. The Cd(II) adsorption studies combined with X-ray photoelectron spectroscopy (XPS) analysis revealed that the adsorption mechanism was mainly attributed to physical microporous filtration and chemical interaction between Cd(II) and the surface functional groups (surface complexation, ion exchange, and electrostatic attraction).
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Affiliation(s)
- Wenjun Yin
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China
| | - Congcong Zhao
- College of Geography and Environment, Collaborative Innovation Center of Human-Nature and Green Development in Universities of Shandong, Shandong Normal University, Jinan, 250014, People's Republic of China
| | - Jingtao Xu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101, China.
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225
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Li H, Zhu F, He S. The degradation of decabromodiphenyl ether in the e-waste site by biochar supported nanoscale zero-valent iron /persulfate. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 183:109540. [PMID: 31400721 DOI: 10.1016/j.ecoenv.2019.109540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/31/2019] [Accepted: 08/02/2019] [Indexed: 06/10/2023]
Abstract
Biochar supported nano zero-valent iron (BC-nZVI) synthesized through liquid phase reduction method was used to activate persulfate (PS) for the removal of decabromodiphenyl ether (BDE209) in the soil. The morphology, structure and composition of BC-nZVI were determined by SEM, XRD, XPS and FTIR. Batch experiments were carried out to investigate the effect of different factors, such as the molar ratio of PS to BC-nZVI, pH value of PS solution and reaction temperature, on the degradation efficiency of BDE209. Results showed that when the molar ratio of PS/BC-nZVI was 3:1, pH value was 3, reaction temperature was 40 °C, 82.06% of BDE209 could be removed within 240 min. The process fitted pseudo-first-order kinetics model well and the apparent activation energy (Ea) was 48.92 kJ mol-1, indicating that the process was controlled by surface reaction. The quenching experiments showed that ·SO4- was predominate radical species in the degradation process in acid and neutral condition. However, ·OH played more important role in alkaline condition. GC-MS was used to determine the reaction products for inferring the degradation pathway of BDE209 in soil by BC-nZVI/PS system.
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Affiliation(s)
- Haihong Li
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, PR China
| | - Fang Zhu
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, PR China.
| | - Siying He
- College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, 030024, PR China
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226
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Duan X, Han B, Sun G, Cui Y. Porous Corn Stalk Cellulose with Multiple Dithiocarbamate Groups as an Efficient Adsorbent for Pb(II) Removal from Wastewater. CHEM LETT 2019. [DOI: 10.1246/cl.190543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Xiannan Duan
- School of Chemistry and Chemical Engineering, Institute for Smart Materials & Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Bin Han
- School of Chemistry and Chemical Engineering, Institute for Smart Materials & Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Guoxin Sun
- School of Chemistry and Chemical Engineering, Institute for Smart Materials & Engineering, University of Jinan, Jinan 250022, P. R. China
| | - Yu Cui
- School of Chemistry and Chemical Engineering, Institute for Smart Materials & Engineering, University of Jinan, Jinan 250022, P. R. China
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227
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Wang X, Gu Y, Tan X, Liu Y, Zhou Y, Hu X, Cai X, Xu W, Zhang C, Liu S. Functionalized Biochar/Clay Composites for Reducing the Bioavailable Fraction of Arsenic and Cadmium in River Sediment. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:2337-2347. [PMID: 31343777 DOI: 10.1002/etc.4542] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/09/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Biochar has frequently been used for the treatment of heavy metal pollution in water and soil; its effect on contaminated sediments requires further research. To improve the ability of biochar to immobilize heavy metals in sediment, we prepared a functionalized biochar/attapulgite composite by pyrolysis of the clay attapulgite and zinc chloride-pretreated rice straw biomass. Compared with the original biochar, the biochar/attapulgite composite had a large increase in specific surface area, pore volume, oxygen-containing functional groups, and cation exchange capacity. Biochar effectively improved the dispersibility of attapulgite as a matrix. The results showed that the biochar/attapulgite composite effectively reduced the bioavailable fraction of arsenic (As) and cadmium (Cd) in river sediment, which was a great improvement compared with the raw biochar. After the sediment was treated with different biochar/attapulgite composites, the concentrations of As and Cd in the overlying water and the porewater, and the content of acid-extractable and toxicity characteristic leaching procedure (TCLP)-extractable As and Cd in the solid phase of the sediment decreased significantly. Both zinc chloride activation and attapulgite improved As and Cd immobilization in sediment when we used the biochar/attapulgite composite. The results suggest that biochar/attapulgite composite can be used as an efficient in situ sorbent amendment to improve the heavy metal immobilization ability of the sediment. Environ Toxicol Chem 2019;38:2337-2347. © 2019 SETAC.
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Affiliation(s)
- Xiaohua Wang
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
- College of Architecture and Urban Planning, Hunan City University, Yiyang, People's Republic of China
| | - Yanling Gu
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Xiaofei Tan
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Yunguo Liu
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Yahui Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Xinjiang Hu
- College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, People's Republic of China
| | - XiaoXi Cai
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
- College of Art and Design, Hunan First Normal University, Changsha, People's Republic of China
| | - Weihua Xu
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Chen Zhang
- College of Environmental Science and Engineering, Hunan University, Changsha, People's Republic of China
- Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, People's Republic of China
| | - Shaoheng Liu
- College of Chemistry and Material Engineering, Hunan University of Arts and Science, Changde, Hunan, People's Republic of China
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228
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Nanoscale zero-valent iron modified with carboxymethyl cellulose in an impinging stream-rotating packed bed for the removal of lead(II). ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.07.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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229
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Safi SR, Senmoto K, Gotoh T, Iizawa T, Nakai S. The effect of γ-FeOOH on enhancing arsenic adsorption from groundwater with DMAPAAQ + FeOOH gel composite. Sci Rep 2019; 9:11909. [PMID: 31417120 PMCID: PMC6695404 DOI: 10.1038/s41598-019-48233-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 08/01/2019] [Indexed: 11/14/2022] Open
Abstract
Arsenic contamination of groundwater is a serious concern worldwide. The research gaps in removing arsenic are selectivity, regeneration and effective removal rate at neutral pH levels. In this study, we discussed the reasons of the high arsenic adsorption from groundwater of our previously developed adsorbent, a cationic polymer gel, N,N-dimethylamino propylacrylamide, methyl chloride quaternary (DMAPAAQ), loaded with iron hydroxide. We used a transmission electron microscope (TEM) and thermogravimetric analyser (TGA) to detect the iron contents in the gel and ensure its maximum impregnation. We found that the gel contains 62.05% FeOOH components. In addition, we used the Mössbauer spectroscopy to examine the type of impregnated iron in the gel composite and found that it was γ-FeOOH. Finally, we used Fourier transform infrared spectroscopy (FTIR) to examine the surface functional groups present in the gel and the differences in those groups before and after iron impregnation. Similarly, we also investigated the differences of the surface functional groups in the gel, before and after the adsorption of both forms of arsenic. To summarize, this study described the characteristics of the gel composite, which is selective in adsorption and cost effective, however further applications should be investigated.
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Affiliation(s)
- Syed Ragib Safi
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan
| | - Kiyotaka Senmoto
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan
| | - Takehiko Gotoh
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan.
| | - Takashi Iizawa
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan
| | - Satoshi Nakai
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima, 739-8527, Japan
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230
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Su L, Han D, Zhu G, Xu H, Luo W, Wang L, Jiang W, Dong A, Yang J. Tailoring the Assembly of Iron Nanoparticles in Carbon Microspheres toward High-Performance Electrocatalytic Denitrification. NANO LETTERS 2019; 19:5423-5430. [PMID: 31347853 DOI: 10.1021/acs.nanolett.9b01925] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Electrocatalytic denitrification is considered as the most promising technology to transform nitrates to nitrogen gas in sewage so far. Although noble metal-based catalysts as a cathode material have reached decent removal capacity of nitrate, the high cost is the main hamper of electrocatalytic reduction. Therefore, the development of alternative catalysis toward highly effective denitrification is imperative yet still remains a significant challenge. Herein, a corchorifolius-like structure, where Fe nanoparticles are sealed in carbon microspheres (CL-Fe@C) with a rough surface, has been elaborately designed by self-assemble strategy. Impressively, the architectured CL-Fe@C microspheres are surrounded with a lot of small iron nanoparticles and contain the high iron content of ∼74%. As a result, an excellent removal capacity of 1816 mg N/g Fe and a high nitrogen selectivity of 98% under a very low nitrate concentration of 100 mg/L are achieved when using the CL-Fe@C microspheres as electrocatalytic denitrification. The present work not only explores high performance electrocatalysis for the denitrification but also promote new inspiration for the preparation of other iron-based functional materials for diverse applications.
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Affiliation(s)
- Li Su
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Dandan Han
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and Department of Chemistry , Fudan University , Shanghai 200433 , China
| | - Guanjia Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Hui Xu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Wei Luo
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Lianjun Wang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Wan Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
| | - Angang Dong
- Collaborative Innovation Center of Chemistry for Energy Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, and Department of Chemistry , Fudan University , Shanghai 200433 , China
| | - Jianping Yang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering , Donghua University , Shanghai 201620 , China
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231
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Corda N, Kini MS. Recent studies in adsorption of Pb(II), Zn(II) and Co(II) using conventional and modified materials:a review. SEP SCI TECHNOL 2019. [DOI: 10.1080/01496395.2019.1652651] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Nikita Corda
- Department of Chemical Engineering, Manipal Institute of Technology, Mahe, Manipal, India
| | - M. Srinivas Kini
- Department of Chemical Engineering, Manipal Institute of Technology, Mahe, Manipal, India
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232
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Salah Ud Din, Mahmood T, Naeem A, Shah NS, Hussain S, Imran M, Sultana S, Rehman AU. A Novel Insight into the Adsorption Interactions of Arsenate with a Fe–Si Binary Oxide. COLLOID JOURNAL 2019. [DOI: 10.1134/s1061933x19040045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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233
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Nejadshafiee V, Islami MR. Adsorption capacity of heavy metal ions using sultone-modified magnetic activated carbon as a bio-adsorbent. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 101:42-52. [DOI: 10.1016/j.msec.2019.03.081] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 03/21/2019] [Accepted: 03/22/2019] [Indexed: 12/15/2022]
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234
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Xu S, Jiang X, Liu L, Wang Z, Zhang X, Peng Y, Cao M. Preparation of PVA/tetra-ZnO composite with framework-supported pore-channel structure and the removal research of lead ions. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:24062-24074. [PMID: 31228065 DOI: 10.1007/s11356-019-05721-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 06/10/2019] [Indexed: 06/09/2023]
Abstract
Polyvinyl alcohol (PVA) filled with different kinds of ZnO whisker was prepared by chemical cross-linking reaction. It was found that the ZnO whiskers dispersed uniformly after being modified by 3-aminopropyltriethoxysilane (APTES). The PVA/tetrapod-shaped ZnO (PVA/tetra-ZnO) composites showed better adsorption performance than other kinds of PVA/ZnO composites. The framework-supported pore-channel structure was beneficial for the transmission and adsorption of heavy metal ions, and the formation of "brush" pore-channel of PVA/tetra-ZnO composites can effectively retain and capture the heavy metal ions. The PVA/tetra-ZnO composites presented well adsorption on Pb(II), Cd(II), and Cr(III) ions than Ni(II) and showed relatively selective removal on Pb(II) and Cr(III) ions. The adsorbed heavy metal ions presented gradient distribution with high content in the out layer and low content in the inner layer. Pb(II) adsorption capacity qe increased gradually with the increase of initial solution concentration and contact time which tended to be stable at 400 mg/L and 800 min. The maximal adsorption capacity qm obtained by nonlinear fitting reached to about 116 mg/g which was very close to the experiment data. Adsorption isotherm results indicated the monolayer adsorption process of the Langmuir model and the adsorption kinetics data fitted well to the pseudo-second-order model. The adsorption process was spontaneous and the high temperature was in favor of adsorption. The adsorption mechanism was explored as the combination of coordination and ion exchange. Besides, the PVA/tetra-ZnO composites exhibited better stress stability, thermo stability, and favorable regeneration than neat PVA.
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Affiliation(s)
- Sheng Xu
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
| | - Xinde Jiang
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
| | - Lingli Liu
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
| | - Zhenxi Wang
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China.
| | - Xiaohang Zhang
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
| | - Yong Peng
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
| | - Meng Cao
- College of Sciences, Nanchang Institute of Technology, Nanchang, 330099, China
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235
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Wang S, Zhao M, Zhou M, Li YC, Wang J, Gao B, Sato S, Feng K, Yin W, Igalavithana AD, Oleszczuk P, Wang X, Ok YS. Biochar-supported nZVI (nZVI/BC) for contaminant removal from soil and water: A critical review. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:820-834. [PMID: 30981127 DOI: 10.1016/j.jhazmat.2019.03.080] [Citation(s) in RCA: 168] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/22/2019] [Accepted: 03/18/2019] [Indexed: 05/22/2023]
Abstract
The promising characteristics of nanoscale zero-valent iron (nZVI) have not been fully exploited owing to intrinsic limitations. Carbon-enriched biochar (BC) has been widely used to overcome the limitations of nZVI and improve its reaction with environmental pollutants. This work reviews the preparation of nZVI/BC nanocomposites; the effects of BC as a supporting matrix on the nZVI crystallite size, dispersion, and oxidation and electron transfer capacity; and its interaction mechanisms with contaminants. The literature review suggests that the properties and preparation conditions of BC (e.g., pore structure, functional groups, feedstock composition, and pyrogenic temperature) play important roles in the manipulation of nZVI properties. This review discusses the interactions of nZVI/BC composites with heavy metals, nitrates, and organic compounds in soil and water. Overall, BC contributes to the removal of contaminants because it can attenuate contaminants on the surface of nZVI/BC; it also enhances electron transfer from nZVI to target contaminants owing to its good electrical conductivity and improves the crystallite size and dispersion of nZVI. This review is intended to provide insights into methods of optimizing nZVI/BC synthesis and maximizing the efficiency of nZVI in environmental cleanup.
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Affiliation(s)
- Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Mingyue Zhao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Min Zhou
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Yuncong C Li
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Soil and Water Sciences Department, Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL, 33031, USA
| | - Jun Wang
- College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, PR China
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Shinjiro Sato
- Department of Science & Engineering for Sustainable Innovation, SOKA University, Hachiojishi, Tokyo, 192-8577, Japan
| | - Ke Feng
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Weiqin Yin
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Avanthi Deshani Igalavithana
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea
| | - Patryk Oleszczuk
- Department of Environmental Chemistry, Faculty of Chemistry, Maria Sklodowska-Curie University, Maria Curie-Sklodowska Square 3, 20-031 Lublin, Poland
| | - Xiaozhi Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China.
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, South Korea.
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236
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Suazo-Hernández J, Sepúlveda P, Manquián-Cerda K, Ramírez-Tagle R, Rubio MA, Bolan N, Sarkar B, Arancibia-Miranda N. Synthesis and characterization of zeolite-based composites functionalized with nanoscale zero-valent iron for removing arsenic in the presence of selenium from water. JOURNAL OF HAZARDOUS MATERIALS 2019; 373:810-819. [PMID: 30974329 DOI: 10.1016/j.jhazmat.2019.03.125] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 03/01/2019] [Accepted: 03/30/2019] [Indexed: 06/09/2023]
Abstract
We studied the sorption of As(V) in single and multi-component (As(V)-Se(VI)) aqueous systems using nanoscale zero-valent iron (nZVI) and nZVI-functionalized zeolite (Z-nZVI) adsorbents. Morphological and physico-chemical characterization of the adsorbents was conducted using X-ray diffraction (XRD), scanning electron microscopy (SEM), surface area and electrophoretic mobility measurements. SEM and XRD analyses showed that Fe-nanoparticle size and crystallinity were better preserved in Z-nZVI than nZVI after As(V) sorption. Highly efficient As(V) removal was achieved for all tested adsorbents with a minimal competition effect of Se(VI). In the single-component system, the equilibrium As(V) sorption time on nZVI and Z-nZVI was 40 and 60 min, respectively, while in the multi-component system, this time was 90 min for both the adsorbents. The Freundlich and pseudo-second-order models provided good fittings for the experimental sorption data (r2>0.96). The As(V) removal capacity was higher using Z-nZVI than nZVI both in the single and multi-component systems, suffering minimal differences in removal in both cases. The results suggested that Z-nZVI had more specific surface sites for As(V) than nZVI and zeolite, which makes Z-nZVI a more effective adsorbent than nZVI for the removal of As(V) from aqueous solutions in the presence of other oxyanions.
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Affiliation(s)
- Jonathan Suazo-Hernández
- Programa de Doctorado en Ciencias de Recursos Naturales Universidad de La Frontera, Av. Francisco Salazar 01145, P.O. Box 54-D, Temuco, Chile; Center of Plant, Soil Interaction and Natural Resources Biotechnology, Universidad de La Frontera. UFRO. Temuco, 4780000, Chile.
| | - Pamela Sepúlveda
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Karen Manquián-Cerda
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Rodrigo Ramírez-Tagle
- Facultad de Ingeniería, Ciencia y Tecnología, Universidad Bernardo O'Higgins, Viel 1497, Santiago, Chile
| | - María Angélica Rubio
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
| | - Nanthi Bolan
- Global Centre for Environmental Remediation, University of Newcastle, Callaghan, NSW 2308, Australia
| | - Binoy Sarkar
- Department of Animal and Plant Sciences, The University of Sheffield, Western Bank, Sheffield S10 2 TN, UK.
| | - Nicolás Arancibia-Miranda
- Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363, Santiago, Chile
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237
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Shang J, Gao J, Xi J, Wang Y, Ji F, Li R. Immobilization of Cr(VI) from solution by a graphene oxide-nZVI/biochar composite. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2019; 91:565-572. [PMID: 30667126 DOI: 10.1002/wer.1059] [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: 11/13/2018] [Revised: 01/02/2019] [Accepted: 01/16/2019] [Indexed: 06/09/2023]
Abstract
A graphene oxide (GO)-nanoscale zerovalent iron (nZVI)-biochar composite (GO-nZVI/BC) was synthesized prior to characterization by X-ray diffraction (XRD), vibrating sample magnetometer (VSM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy analyses. Batch experiments were performed at different initial Cr(VI) concentrations, contact times, and solution pH values. The effects of coexisting anions and chelating agents were also examined. The results indicated that the removal of Cr(VI) was highly pH-dependent and reached a maximum capacity at pH of 2. The equilibrium data were fitted well with the Langmuir isotherm model, and the kinetic data fitted better with the pseudo-second-order kinetic model. The increasing concentrations of EDTA in aqueous solutions were favorable to the removal of Cr(VI), while NO 3 - significantly inhibited adsorption. Furthermore, the GO-nZVI/BC maintained ~84.5% of its original capacity after aging in the air for 25 weeks. Based on the removal efficiency, GO-nZVI/BC can be considered to be an effective material for water treatment applications. PRACTITIONER POINTS: Biochar-supported graphene oxide-coated nanoscale zerovalent iron (GO-nZVI/BC) was synthesized and used to treat Cr(VI) from solution. Cr(VI) removal was pH-dependent and obeyed the Langmuir isotherm model and pseudo-second-order model. GO-nZVI/BC maintained ~84.5% of its original capacity after aging for 25 w in the air.
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Affiliation(s)
- Jingge Shang
- Department of Environmental Science, School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Jie Gao
- Department of Environmental Science, School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Junting Xi
- Department of Analytical Chemistry, School of Science, China Pharmaceutical University, Nanjing, China
| | - Yingjie Wang
- Department of Environmental Science, School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Fangyu Ji
- Department of Environmental Science, School of Engineering, China Pharmaceutical University, Nanjing, China
| | - Ruijun Li
- Department of Analytical Chemistry, School of Science, China Pharmaceutical University, Nanjing, China
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238
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Chen Y, Lin Z, Hao R, Xu H, Huang C. Rapid adsorption and reductive degradation of Naphthol Green B from aqueous solution by Polypyrrole/Attapulgite composites supported nanoscale zero-valent iron. JOURNAL OF HAZARDOUS MATERIALS 2019; 371:8-17. [PMID: 30844652 DOI: 10.1016/j.jhazmat.2019.02.096] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 02/24/2019] [Accepted: 02/26/2019] [Indexed: 06/09/2023]
Abstract
Polypyrrole/Attapulgite-supported nanoscale zero-valent iron (PPy/APT-nZVI) composites employed to extract Naphthol Green B (NGB) from aqueous solution, were successfully fabricated by chemical oxidative polymerization and liquid-phase reduction method. Comparison experiment of different materials showed that 99.59% of NGB was removed using PPy/APT-nZVI (1:0.5) after 25 min, much higher than APT, PPy, PPy/APT and nZVI. The morphology and structure of PPy/APT-nZVI (1:0.5) composites were characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), which confirmed the high disperse and activity of nZVI after supported by PPy/APT. Furthermore, dynamic studies revealed that removal process was highly consistent with not only the pseudo-second-order model for adsorption but also pseudo-first-order model for degradation process, which proved the removal was controlled by chemical surface-limiting step. A possible removal mechanism, containing prompt adsorption of NGB onto the PPy/APT-nZVI (1:0.5) surface and being degraded by nZVI, was put forward. Additionally, the stability study verified the activity of nZVI can retain longer time than that of single nZVI due to such powerfully protective layers of PPy/APT.
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Affiliation(s)
- Yong Chen
- College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China.
| | - Zonghui Lin
- College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Rongrong Hao
- College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Hui Xu
- College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China; Key Laboratory of Clay Mineral in Gansu Province, Lanzhou, 730000, China.
| | - Chengyu Huang
- College of Perochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
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239
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Wang B, Sun Z, Sun Q, Wang J, Du Z, Li C, Li X. The preparation of bifunctional electrospun air filtration membranes by introducing attapulgite for the efficient capturing of ultrafine PMs and hazardous heavy metal ions. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 249:851-859. [PMID: 30954833 DOI: 10.1016/j.envpol.2019.03.122] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 05/29/2023]
Abstract
The comprehensive sources of particulate matter (PM) require air purification materials to possess both high filtration efficiencies and low air resistances in an effort to provide healthcare. However, the assembly of multiple-layered filters with different functions leads to high pressure drop and high operating cost. Therefore, a multifunctional air filter that can provide excellent air filtration capacity and healthcare is highly desired. Here, a novel bifunctional polyacrylonitrile/attapulgite hierarchical-structured filter with low air resistance and high adsorption capacity was designed and fabricated by embedding attapulgite nanorods during a facile electrospinning process. The hierarchical polyacrylonitrile/attapulgite membranes showed only a ∼64 Pa resistance for 0.1 μm PM. Another benefit of using the attapulgite nanorods is an adsorption effect for hazardous heavy metal ions that accompany airborne ultrafine PMs. Thereby this hierarchical membrane simultaneously exhibits an enhanced filtration performance and hazardous protection ability. Furthermore, due to the electret effect of the attapulgite nanorods, the surface potential of the membrane remains at above 2.2 kV after 600 min of continuous use, which could improve the air filtration efficiency and ensure the long-term service life of the filters. This work may provide a new approach for the design and development of multifunctional air filters for simultaneously capturing ultrafine PMs and any other accompanying hazardous chemicals.
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Affiliation(s)
- Bin Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China; Beijing Key Laboratory of Clothing Materials R & D and Assessment, Beijing Engineering Research Center of Textile Nanofiber, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zhiming Sun
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, China
| | - Qing Sun
- College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jie Wang
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Zongxi Du
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China
| | - Congju Li
- School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xiuyan Li
- School of Materials Science & Engineering, Beijing Institute of Fashion Technology, Beijing, 100029, China.
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240
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Abdel Rahman RO, Abdel Moamen OA, Abdelmonem N, Ismail IM. Optimizing the removal of strontium and cesium ions from binary solutions on magnetic nano-zeolite using response surface methodology (RSM) and artificial neural network (ANN). ENVIRONMENTAL RESEARCH 2019; 173:397-410. [PMID: 30954913 DOI: 10.1016/j.envres.2019.03.055] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 02/14/2019] [Accepted: 03/21/2019] [Indexed: 06/09/2023]
Abstract
The feasibility of using magnetic nano-zeolite (MNZ) to remove cesium and strontium from their binary corrosive solutions was investigated by considering the multi-variant/multi-objective nature of the process. RSM (Response Surface Methodology) and ANN (Artificial Neural Network) were used to model and optimize the removal system and assess sensitive parameters that can affect the process reliability. MNZ is characterized by its high surface area and cation exchange capacity and possesses good regeneration behavior for both elements using citric acid. Its stability is comparable to other sorbents in acidic media and the stability increases in alkaline media, where dissolution rate follow first order reaction on heterogeneous sites. MNZ removes both contaminants simultaneously with small tendency toward Cs, where MNZ is suggested for application in pre-treatment of highly contaminated alkaline solutions. The percentage removal, decontamination factors, and separation factors have different dependency on the effluent/process conditions; this dependency is the same for both contaminants. Sorption kinetics is initially controlled by external mass transfer through the boundaries then intra-particle diffusion dominates the reactions. The process sensitivity to pH changes is attributed to changes in structural elements -species distribution at the solid/aqueous interface. Cs+ and Sr+2 are exchanged with Na+ and H+, regardless the effluent pH value, and with Al and Fe cations at specific pH. Isosteric heat of sorption calculations indicated that the total heat needed to complete the reaction was considerably reduced by operating the process at optimized temperature.
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Affiliation(s)
- R O Abdel Rahman
- Hot Lab. Center, Atomic Energy Authority of Egypt, P.O. No. 13759, Cairo, Egypt.
| | - O A Abdel Moamen
- Hot Lab. Center, Atomic Energy Authority of Egypt, P.O. No. 13759, Cairo, Egypt
| | - N Abdelmonem
- Chemical Engineering Department, Faculty of Engineering, Cairo University, Egypt
| | - I M Ismail
- Renewable Energy Engineering, Zewail City of Science and Technology, Giza, Egypt
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241
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Liu J, Wu P, Li S, Chen M, Cai W, Zou D, Zhu N, Dang Z. Synergistic deep removal of As(III) and Cd(II) by a calcined multifunctional MgZnFe-CO 3 layered double hydroxide: Photooxidation, precipitation and adsorption. CHEMOSPHERE 2019; 225:115-125. [PMID: 30870628 DOI: 10.1016/j.chemosphere.2019.03.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/01/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
A high removal rate (>99.7%) of combined arsenite (As(III)) and Cd (Cd(II)) in low concentration (1000 μg/L) from contaminated water was achieved by a calcined MgZnFe-CO3 layered double hydroxide (CMZF) adsorbent. Batch control studies and a series of spectroscopy detection technologies were employed to investigate the removal mechanism and interactions between As(III) and Cd(II) on the interface of water/CMZF. Synergistic adsorption and photooxidation occurred based on the systematical kinetic and isotherm studies. The enhanced removal of As(III) was achieved by the photooxidation, formation of ternary As(III)Cd(II) surface complexes and enhanced hydrogen bond. Meanwhile, oxidative formed negative charged As(V) could reduce the electrostatic repulsion force between Cd(II) cations and play a role as anion bridging, consequently resulted in a stronger attraction between CMZF and Cd(II). Combined with the verdicts of relevant characterizations such as XRD, XPS and EPR, it was assumed that the deep co-removal mechanism could be attributed to the coupling of various processes including intercalation, complexation, photooxidation of As(III) and precipitation of CdCO3. Moreover, the successful removal of As(III) and Cd(II) from real water matrix qualified the CMZF a potentially attractive adsorbent for both As(III) and Cd(II) deep treatment in practical engineering.
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Affiliation(s)
- Junqin Liu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Pingxiao Wu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China; Guangdong Engineering and Technology Research Center for Environmental Nanomaterials, Guangzhou, 510006, China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, PR China.
| | - Shuaishuai Li
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Meiqing Chen
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China
| | - Wentin Cai
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Dinghui Zou
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China
| | - Nengwu Zhu
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Environmental Protection Key Laboratory of Solid Waste Treatment and Recycling, Guangzhou, 510006, PR China
| | - Zhi Dang
- School of Environment and Energy, South China University of Technology, Guangzhou, 510006, PR China; The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, PR China; Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou Higher Education Mega Centre, Guangzhou, 510006, PR China
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242
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Li S, Luo P, Wu H, Wei C, Hu Y, Qiu G. Strategies for Improving the Performance and Application of MOFs Photocatalysts. ChemCatChem 2019. [DOI: 10.1002/cctc.201900199] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shixiong Li
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- School of Chemical Engineering and Resource RecyclingWuzhou University Wuzhou 543002 P. R. China
| | - Pei Luo
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
| | - Haizhen Wu
- School of Biology and Biological EngineeringSouth China University of Technology Guangzhou 510006 P. R. China
| | - Chaohai Wei
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Yun Hu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
| | - Guanglei Qiu
- School of Environment and EnergySouth China University of Technology Guangzhou 510006 P. R. China
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of Technology Guangzhou 510006 P. R. China
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243
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Han C, Yang T, Liu H, Yang L, Luo Y. Characterizations and mechanisms for synthesis of chitosan-coated Na-X zeolite from fly ash and As(V) adsorption study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:10106-10116. [PMID: 30756353 DOI: 10.1007/s11356-019-04466-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 02/03/2019] [Indexed: 06/09/2023]
Abstract
Solid waste fly ash with low aluminum of Yunnan Province in China was used as pristine material to prepared chitosan-coated Na-X zeolite, and the obtained composite material was employed as As(V) adsorbent. Then, the prepared materials were characterized by XRD, FT-IR, and XPS. And the results suggested that the low aluminum fly ash was successfully convert into Na-X zeolite, and the mineralization between Si-OH of the obtained Na-X zeolite and C-OH of chitosan was the dominated mechanism for coated chitosan over the surface of Na-X zeolite. From the batch experiments of As(V) removal, it has been found that the coated chitosan could significantly improve As(V) performance of Na-X zeolite. The optimal working pH for removal As(V) by chitosan-coated Na-X zeolite was attained at pH 2.1 ± 0.1, and the maximum adsorption capacity was 63.23 mg/g. And the adsorption data at different interval time was excellent fitted by pseudo-second-order kinetic model. From the analyze of XPS, the results suggested that As(V) uptake over adsorbent by the bond of As-N and As-O and the surface hydroxyl group of Al-OH and -NH2 were involved in uptake As(V) from acid wastewater.
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Affiliation(s)
- Caiyun Han
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China.
| | - Ting Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Hang Liu
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Liu Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China
| | - Yongming Luo
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, People's Republic of China.
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244
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Xie W, Zhou F, Bi X, Chen D, Huang Z, Li Y, Sun S, Liu J. Decomposition of Nickel(Ⅱ)-Ethylenediaminetetraacetic acid by Fenton-Like reaction over oxygen vacancies-based Cu-Doped Fe 3O 4@γ-Al 2O 3 catalyst: A synergy of oxidation and adsorption. CHEMOSPHERE 2019; 221:563-572. [PMID: 30677726 DOI: 10.1016/j.chemosphere.2019.01.083] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 01/07/2019] [Accepted: 01/12/2019] [Indexed: 06/09/2023]
Abstract
Nickel (Ⅱ)-ethylenediaminetetraacetic acid (Ni-EDTA) complexes are widely present in electroplating effluents. Owing to its chemical stability, Ni-EDTA is hardly removed in traditional Fenton/Fenton-like processes with conventional iron (Fe)-based catalyst. In this study, oxygen vacancies were introduced into our highly efficient and novel Fe3O4@γ-Al2O3 catalysts using Cu doping for Ni-EDTA decomposition in Fenton-like system. Without noble-metal cocatalyst, the introduction of oxygen vacancies in Cu-doped Fe3O4@γ-Al2O3 catalysts exhibit excellent Fenton-like activity even in neutral or alkaline conditions. Experimental results revealed that, without the aid of extra energy, Ni-EDTA complexes could be effectively decomposed over oxygen vacancies-based catalyst. Electron paramagnetic resonance (EPR), X-ray photoelectron spectroscopy (XPS), oxygen temperature-programmed desorption (O2-TPD), and hydrogen temperature-programmed reduction (H2-TPR) were used to get a deep insight into the decomposition mechanism. Additionally, by employing the Al-containing support, stable layered double-hydroxide phases of NiAl could be formed, indicating that a synergy of oxidation and adsorption could simultaneously take place, which led to the recovery of released Ni2+ ions and also reduction in secondary pollution. To investigate the decomposition process of Ni-EDTA over oxygen vacancies-based catalyst, liquid chromatography-quadrupole/electrostatic field orbitrap high resolution mass spectrometry (LC-MS/MS) was employed to identify the generated intermediates, and thus, a plausible decomposition pathway was successfully conceived.
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Affiliation(s)
- Wuming Xie
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China.
| | - Fengping Zhou
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Xiaolin Bi
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Dongdong Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Zijun Huang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Yuhui Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
| | - Shuiyu Sun
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China; Guangdong Polytechnic of Environmental Protection Engineering, Foshan, 528216, PR China
| | - Jingyong Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou, Guangdong, 510006, PR China
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245
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Zhang H, Dang Q, Liu C, Yu D, Wang Y, Pu X, Liu Y, Liang Y, Cha D. Fabrication of methyl acrylate and tetraethylenepentamine grafted magnetic chitosan microparticles for capture of Cd(II) from aqueous solutions. JOURNAL OF HAZARDOUS MATERIALS 2019; 366:346-357. [PMID: 30530027 DOI: 10.1016/j.jhazmat.2018.12.006] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 11/30/2018] [Accepted: 12/01/2018] [Indexed: 05/04/2023]
Abstract
MCS-MA-TEPA microparticles, with 251.22 mg g-1 of adsorption capacity for Cd(II), higher than most of the counterparts, were first fabricated by chemical coprecipitation, spray drying, and Michael addition reaction, without any cross-linker participation. These Fe3O4-nanoparticle-embedded microparticles of 5.95 μm in size, derived from modifications by methyl acrylate (MA) and tetraethylenepentamine (TEPA) on magnetic chitosan (MCS) microparticles, were of plum-pudding-like and wrinkle-like topography portrayed by TEM and SEM. Such features were beneficial to adsorbent recycling and Cd(II) capture. BET examinations illustrated 6.084 m2 g-1 of specific surface area, 0.015 mL g-1 of pore volume, and 6.536 nm of pore diameter. FTIR, VSM, XRD, TEM-SAED, TG, and DTG characterizations were indicative of successful synthesis, satisfactory magnetism, well-defined architecture, and good thermostability. Optimal adsorption parameters for Cd(II) were determined via batch experiments. Thermodynamic parameters and adsorption data fitting implied an exothermic, spontaneous, monolayer, and chemisorption process. XPS analyses confirmed a potential adsorption mechanism that N and O atoms on microparticles chelated with Cd(II) ions in solutions. Additionally, MCS-MA-TEPA-Cd(II) microparticles were magnetically separated easily and had outstanding reusability even after five-time recycling, with a slight adsorption capability loss (< 12%). Altogether, MCS-MA-TEPA microparticles might serve as a promising adsorbent for contaminated water scavenging.
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Affiliation(s)
- Haifeng Zhang
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Qifeng Dang
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Chengsheng Liu
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China.
| | - Dejun Yu
- Qingdao Marine Biomedical Research Institute, No. 23 Hong Kong East Road, Qingdao 266071, PR China
| | - Yan Wang
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Xiaoying Pu
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Yan Liu
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Yuanyuan Liang
- College of Marine Life Sciences, Ocean University of China, No. 5 Yushan Road, Qingdao 266003, PR China
| | - Dongsu Cha
- The Graduate School of Biotechnology, Korea University, Seoul 136-701, South Korea
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Soni R, Shukla DP. Synthesis of fly ash based zeolite-reduced graphene oxide composite and its evaluation as an adsorbent for arsenic removal. CHEMOSPHERE 2019; 219:504-509. [PMID: 30553210 DOI: 10.1016/j.chemosphere.2018.11.203] [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: 03/19/2018] [Revised: 11/12/2018] [Accepted: 11/28/2018] [Indexed: 06/09/2023]
Abstract
A zeolite-reduced graphene oxide (ZrGO) based composite was synthesized to remove arsenic from water. To make a low-cost adsorbent, zeolite was synthesized using an inexpensive waste material; fly ash, which was further used to produce the ZrGO composite. Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), and Raman spectra were used to characterize the morphology and surface composition of the synthesized materials. Synthesized materials: zeolite, rGO and ZrGO were evaluated as an adsorbent to remove arsenic from water. The results indicated that all three were able to adsorb arsenic from water but the removal efficiency of ZrGO was the best as it was able to bring down the arsenic concentration within the WHO permissible limits. The maximum adsorption capacity for 100 μg/L of initial arsenic concentration was found to be 49.23 μg/g. Results indicate that pseudo second order kinetics describes the arsenic adsorption on ZrGO. Adsorption isotherm study for ZrGO shows best fit for Redlich-Peterson model of adsorption.
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Affiliation(s)
- Richa Soni
- School of Engineering, Indian Institute of Technology, Mandi, 175005, Himachal Pradesh, India.
| | - Dericks Praise Shukla
- School of Engineering, Indian Institute of Technology, Mandi, 175005, Himachal Pradesh, India.
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247
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Sarma GK, Sen Gupta S, Bhattacharyya KG. Nanomaterials as versatile adsorbents for heavy metal ions in water: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:6245-6278. [PMID: 30623336 DOI: 10.1007/s11356-018-04093-y] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 12/27/2018] [Indexed: 05/21/2023]
Abstract
Over the years, heavy metal pollution has become a very serious environmental problem worldwide. Even though anthropogenic sources are believed to be the major cause of heavy metal pollution, they can also be introduced into the environment from natural geogenic sources. Heavy metals, because of their toxicity and carcinogenicity, are considered to be the most harmful contaminants of groundwater as well as surface water, a serious threat to both human and aquatic life. Nanomaterials due to their size and higher surface area to volume ratio show some unique properties compared to their bulk counterpart and have drawn significant attention of the scientific community in the last few decades. This large surface area can make these materials as effective adsorbents in pollution remediation studies. In this review, an attempt has been made to focus on the applicability of different types of nanomaterials, such as clay-nanocomposites, metal oxide-based nanomaterials, carbon nanotubes, and various polymeric nanocomposites as adsorbents for removal of variety of heavy metals, such as As, Cd, Co, Cr, Cu, Hg, Mn, Ni, Pb, Sn, U, V, and Zn, from water as reported during the last few years. This work tries to analyze the metal-nanomaterial interactions, the mechanism of adsorption, the adsorption capacities of the nanomaterials, and the kinetics of adsorption under various experimental conditions. The review brings forward the relation between the physicochemical properties of the nanomaterials and heavy metal adsorption on them.
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Affiliation(s)
- Gautam Kumar Sarma
- Department of Chemistry, Rajiv Gandhi University, Doimukh, Arunachal Pradesh, 791112, India.
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248
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Wang S, Zhao M, Zhou M, Zhao Y, Li YC, Gao B, Feng K, Yin W, Ok YS, Wang X. Biomass facilitated phase transformation of natural hematite at high temperatures and sorption of Cd 2+ and Cu 2. ENVIRONMENT INTERNATIONAL 2019; 124:473-481. [PMID: 30684805 DOI: 10.1016/j.envint.2019.01.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 01/02/2019] [Accepted: 01/03/2019] [Indexed: 06/09/2023]
Abstract
Phase changes of natural hematite are often practiced to improve heavy metal removal and magnetism for easy recycling. In this work, pinewood biomass (PB) and natural hematite (H) admixtures were pyrolyzed at 300, 450 and 600 °C under N2 environment to prepare HBC nanocomposites (HBC300, HBC450 and HBC600). The X-ray diffraction (XRD) confirmed the reductive transformation of hematite (crystallite size ≈ 47 nm) into magnetite (25 nm) and further to wustite (25 nm) and zerovalent iron (48 nm). The Langmuir isotherms showed that the maximum sorption capacities of HBC300, HBC450, and HBC600 were 173, 138, and 130 mmol kg-1 for Cd2+, and 359, 172, and 197 mmol kg-1 for Cu2+, respectively. The higher pH up to 5 increased sorption of both Cd2+ and Cu2+, whereas the higher ionic strength (0.05-0.4 M) decreased Cd2+ sorption. Sorption of Cd2+ and Cu2+ by HBC300 was accompanied by one order of magnitude greater cation release than HBC450 and HBC600. In a binary system, Cd2+ sorption was depressed by over four times in presence of Cu2+. Overall, ion exchange was more pronounced for HBC300, and Cu2+ was more favorably retained by specific sorption than Cd2+. The greater magnetism of HBC nanoparticles favors separation from aqueous solutions.
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Affiliation(s)
- Shengsen Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangdong, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Mingyue Zhao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Min Zhou
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Yiting Zhao
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Yuncong C Li
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China; Soil and Water Sciences Department, Tropical Research and Education Center, IFAS, University of Florida, Homestead, FL 33031, United States of America
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL 32611, United States of America
| | - Ke Feng
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China
| | - Weiqin Yin
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Yong Sik Ok
- Korea Biochar Research Center & Division of Environmental Science and Ecological Engineering, Korea University, Seoul, 02841, Republic of Korea.
| | - Xiaozhi Wang
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China; Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, China.
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249
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Efficient and fast removal of Pb2+ and Cd2+ from an aqueous solution using a chitosan/Mg-Al-layered double hydroxide nanocomposite. J Colloid Interface Sci 2019; 539:184-193. [DOI: 10.1016/j.jcis.2018.12.049] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 11/20/2022]
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250
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Zhu L, Tong L, Zhao N, Li J, Lv Y. Coupling interaction between porous biochar and nano zero valent iron/nano α-hydroxyl iron oxide improves the remediation efficiency of cadmium in aqueous solution. CHEMOSPHERE 2019; 219:493-503. [PMID: 30551116 DOI: 10.1016/j.chemosphere.2018.12.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 11/28/2018] [Accepted: 12/01/2018] [Indexed: 06/09/2023]
Abstract
Based on the interaction between mesoscopic biochar materials and nanomaterials, the synergistic mechanism of the two materials in the process of cadmium remediation was studied. K2CO3 activated porous biochar (KBC) loaded with nano-zero-valent iron (nZVI)/nano-α-hydroxy-iron oxide (nHIO) was studied. Macroscopically, batch adsorption experiments were carried out to describe the adsorption properties of the composites. Microscopically, the changes of surface chemical states were characterized by electron microscopy, XRD, FTIR and XPS. Combining the macroscopic and microscopic characteristics, the synergistic mechanism between biochar and nZVI/nHIO was comprehensively analyzed. The strong synergistic effects between biochar and nano-zero-valent iron (nZVI)/nano-α-hydroxy-iron oxide (nHIO) were found, which improved the removal efficiency of cadmium (Cd) in aqueous solution. The results showed that the loading of nZVI/nHIO reduced the specific surface area to 178.6 m2 g-1 and 272.2 m2 g-1, respectively, but the adsorption capacity of Cd increased to 22.37 mg g-1 and 26.43 mg g-1, respectively, which was more than three times that of KBC (7.02 mg g-1). The interaction between nZVI/nHIO and Cd was enhanced by the complexation of surface functional groups, but the coupling effects were different. The coupling mechanism of Cd on nZVI@KBC was complexation - reduction. Cd was partly reduced in the removal process. While for nHIO@KBC, the existence of Fe (III) on the surface of biochar increased the number and species of oxygen-containing functional groups and enhanced complexation. The existence of synergistic mechanism will provide theoretical basis for the preparation of high efficient nanocomposites and expand the application of nanomaterials in the field of environment.
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Affiliation(s)
- Ling Zhu
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Lihong Tong
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Nan Zhao
- Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Jie Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China
| | - Yizhong Lv
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
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