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Direct immobilization of Se(IV) from acidic Se(IV)-rich wastewater via ferric selenite Co-precipitation.
Yuan, Zidan; Su, Rui; Ma, Xu; Yu, Le; Pan, Yuanming; Chen, Ning; Chernikov, Roman; Cheung, Leo Ka Long; Deevsalar, Reza; Tunc, Ayetullah; Wang, Liang; Zeng, Xiangfeng; Lin, Jinru; Jia, Yongfeng.
Afiliación
  • Yuan Z; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
  • Su R; College of Civil Engineering and Architecture, Liaoning University of Technology, Jinzhou 121001, China.
  • Ma X; School of Environment and Resources, Dalian Minzu University, Dalian 116600, China.
  • Yu L; Specialized robotBG, Siasun Robot Automation Co., LTD, Shenyang 110168, China.
  • Pan Y; Department of Geological Sciences, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada.
  • Chen N; Canadian Light Source, 44 Innovation Boulevard, Saskatoon SK S7N 2V3, Canada.
  • Chernikov R; Canadian Light Source, 44 Innovation Boulevard, Saskatoon SK S7N 2V3, Canada.
  • Cheung LKL; Department of Geological Sciences, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada.
  • Deevsalar R; Department of Geological Sciences, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada.
  • Tunc A; Department of Geological Sciences, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada.
  • Wang L; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China; University of Chinese Academy of Sciences, Beijing 100049, China.
  • Zeng X; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
  • Lin J; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. Electronic address: jinru.lin@iae.ac.cn.
  • Jia Y; Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
J Hazard Mater ; 460: 132346, 2023 Oct 15.
Article en En | MEDLINE | ID: mdl-37611390
The attenuation of acidic Se(IV)-rich wastewater, including those associated with acid mine drainage (AMD) and nonferrous metallurgical wastewater (NMW), presents a serious environmental challenge. This study investigates the effects of diverse factors from pH values to Se(IV)/Fe(III) molar ratios, initial Se(IV) concentrations, and alkali neutralization agents on the direct co-precipitation of ferric selenites in AMD and NMW systems involving different orders of Fe(III) and alkali addition. Our results show that amorphous sulfate-substituted ferric (hydrogen) selenite and Se(IV)-bearing ferrihydrite-schwertmannite are the major Se(IV)-attenuation solids except that gypsum is an additional phase in the NMW system with Ca(OH)2 neutralization. Produced ferric selenites achieve 98-99.8% of Se(IV) immobilization under optimal conditions of pH 4.5, Se(IV)/Fe(III) molar ratios of 0.0625-0.5, and initial Se(IV) concentrations of 0.15-1.3 mmol·L-1. Moreover, completing FeSO4+ and FeHSeO32+/FeSeO3+ complexes as well as different ferric selenite co-precipitates are shown to collectively control aqueous Se(IV) remaining. Specifically, three distinct trends of aqueous Se(IV) concentrations separately correspond to changes in the four factors. The co-precipitation in the NMW system via pH adjustment followed by Fe(III) addition is more efficient for Se(IV) fixation than that in the AMD system because of minimal complexation, concurrent Fe(III) hydrolysis, and enhanced ferric selenite co-precipitation in the former.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2023 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos