articleEnvironment InternationalJan 25, 2019GOLD OA

Multifunctional iron-biochar composites for the removal of potentially toxic elements, inherent cations, and hetero-chloride from hydraulic fracturing wastewater

YSYuqing SunIKIris K.M. YuDCDaniel C.W. TsangXCXinde CaoDLDaohui Lin

Hong Kong Polytechnic University · Harbin Institute of Technology · +8 more institutions

PubMed
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Abstract

This paper evaluates a novel sorbent for the removal of potentially toxic elements, inherent cations, and heterochloride 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 FeCl 3 solution and subsequently pyrolyzing them at 1000 C in a N 2 -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 CeO bonds as CeOeFe moieties on the BC surface, which were subsequently reduced to a C]C bond and…

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12

Topics & keywords

Topics
Keywords
  • Biochar
  • Pyrolysis
  • Chloride
  • Zerovalent iron
  • Aqueous solution
  • Sorbent
  • Reactivity (psychology)
  • Chemistry
UN Sustainable Development Goals
  • Clean water and sanitation
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