Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater
This paper evaluates a novel sorbent for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater (FWW). A series of iron-biochar (Fe-BC) composites with different Fe/BC impregnation mass ratios (0.5:1, 1:1, and 2:1) were prepared by mixin...
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Elsevier
2019-03-01
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Series: | Environment International |
Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412018325030 |
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Article |
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DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yuqing Sun Iris K.M. Yu Daniel C.W. Tsang Xinde Cao Daohui Lin Linling Wang Nigel J.D. Graham Daniel S. Alessi Michael Komárek Yong Sik Ok Yujie Feng Xiang-Dong Li |
spellingShingle |
Yuqing Sun Iris K.M. Yu Daniel C.W. Tsang Xinde Cao Daohui Lin Linling Wang Nigel J.D. Graham Daniel S. Alessi Michael Komárek Yong Sik Ok Yujie Feng Xiang-Dong Li Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater Environment International |
author_facet |
Yuqing Sun Iris K.M. Yu Daniel C.W. Tsang Xinde Cao Daohui Lin Linling Wang Nigel J.D. Graham Daniel S. Alessi Michael Komárek Yong Sik Ok Yujie Feng Xiang-Dong Li |
author_sort |
Yuqing Sun |
title |
Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
title_short |
Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
title_full |
Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
title_fullStr |
Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
title_full_unstemmed |
Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
title_sort |
multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater |
publisher |
Elsevier |
series |
Environment International |
issn |
0160-4120 |
publishDate |
2019-03-01 |
description |
This paper evaluates a novel sorbent for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater (FWW). A series of iron-biochar (Fe-BC) composites with different Fe/BC impregnation mass ratios (0.5:1, 1:1, and 2:1) were prepared by mixing forestry wood waste-derived BC powder with an aqueous FeCl3 solution and subsequently pyrolyzing them at 1000 °C in a N2-purged tubular furnace. The porosity, surface morphology, crystalline structure, and interfacial chemical behavior of the Fe-BC composites were characterized, revealing that Fe chelated with CO bonds as COFe moieties on the BC surface, which were subsequently reduced to a CC bond and nanoscale zerovalent Fe (nZVI) during pyrolysis. The performance of the Fe-BC composites was evaluated for simultaneous removal of potentially toxic elements (Cu(II), Cr(VI), Zn(II), and As(V)), inherent cations (K, Na, Ca, Mg, Ba, and Sr), hetero-chloride (1,1,2-trichlorethane (1,1,2-TCA)), and total organic carbon (TOC) from high-salinity (233 g L−1 total dissolved solids (TDS)) model FWW. By elucidating the removal mechanisms of different contaminants, we demonstrated that Fe-BC (1:1) had an optimal reducing/charge-transfer reactivity owing to the homogenous distribution of nZVI with the highest Fe0/Fe2+ ratio. A lower Fe content in Fe-BC (0.5:1) resulted in a rapid exhaustion of Fe0, while a higher Fe content in Fe-BC (2:1) caused severe aggregation and oxidization of Fe0, contributing to its complexation/(co-)precipitation with Fe2+/Fe3+. All of the synthesized Fe-BC composites exhibited a high removal capacity for inherent cations (3.2–7.2 g g−1) in FWW through bridging with the CO bonds and cation-π interactions. Overall, this study illustrated the potential efficacy and mechanistic roles of Fe-BC composites for (pre-)treatment of high-salinity and complex FWW. Keywords: Engineered biochar, Mineral-carbon composites, Metals/metalloids, Fracturing wastewater treatment, Sustainable remediation |
url |
http://www.sciencedirect.com/science/article/pii/S0160412018325030 |
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doaj-bfc138e06577498b8cb2b6c246539bf42020-11-25T01:53:24ZengElsevierEnvironment International0160-41202019-03-01124521532Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewaterYuqing Sun0Iris K.M. Yu1Daniel C.W. Tsang2Xinde Cao3Daohui Lin4Linling Wang5Nigel J.D. Graham6Daniel S. Alessi7Michael Komárek8Yong Sik Ok9Yujie Feng10Xiang-Dong Li11Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaDepartment of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China; Corresponding authors.School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, ChinaDepartment of Environmental Science, Zhejiang University, Hangzhou 310058, ChinaSchool of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaEnvironmental and Water Resources Engineering, Department of Civil and Environmental Engineering, Imperial College London, South Kensington, London SW7 2AZ, UKDepartment of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta T6G 2E3, CanadaFaculty of Environmental Sciences, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague-Suchdol, Czech RepublicKorea Biochar Research Center, O-Jeong Eco-Resilience Institute (OJERI), Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; Corresponding authors.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, ChinaDepartment of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, ChinaThis paper evaluates a novel sorbent for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater (FWW). A series of iron-biochar (Fe-BC) composites with different Fe/BC impregnation mass ratios (0.5:1, 1:1, and 2:1) were prepared by mixing forestry wood waste-derived BC powder with an aqueous FeCl3 solution and subsequently pyrolyzing them at 1000 °C in a N2-purged tubular furnace. The porosity, surface morphology, crystalline structure, and interfacial chemical behavior of the Fe-BC composites were characterized, revealing that Fe chelated with CO bonds as COFe moieties on the BC surface, which were subsequently reduced to a CC bond and nanoscale zerovalent Fe (nZVI) during pyrolysis. The performance of the Fe-BC composites was evaluated for simultaneous removal of potentially toxic elements (Cu(II), Cr(VI), Zn(II), and As(V)), inherent cations (K, Na, Ca, Mg, Ba, and Sr), hetero-chloride (1,1,2-trichlorethane (1,1,2-TCA)), and total organic carbon (TOC) from high-salinity (233 g L−1 total dissolved solids (TDS)) model FWW. By elucidating the removal mechanisms of different contaminants, we demonstrated that Fe-BC (1:1) had an optimal reducing/charge-transfer reactivity owing to the homogenous distribution of nZVI with the highest Fe0/Fe2+ ratio. A lower Fe content in Fe-BC (0.5:1) resulted in a rapid exhaustion of Fe0, while a higher Fe content in Fe-BC (2:1) caused severe aggregation and oxidization of Fe0, contributing to its complexation/(co-)precipitation with Fe2+/Fe3+. All of the synthesized Fe-BC composites exhibited a high removal capacity for inherent cations (3.2–7.2 g g−1) in FWW through bridging with the CO bonds and cation-π interactions. Overall, this study illustrated the potential efficacy and mechanistic roles of Fe-BC composites for (pre-)treatment of high-salinity and complex FWW. Keywords: Engineered biochar, Mineral-carbon composites, Metals/metalloids, Fracturing wastewater treatment, Sustainable remediationhttp://www.sciencedirect.com/science/article/pii/S0160412018325030 |