中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Removal of Ni(II) from strongly acidic wastewater by chelating precipitation and recovery of NiO from the precipitates

文献类型:期刊论文

作者Yang, Xin; Peng, Xianjia; Kong, Linghao; Hu, Xingyun
刊名JOURNAL OF ENVIRONMENTAL SCIENCES
出版日期2021-06
卷号104页码:365-375
关键词Strongly acidic wastewater Ni(II) Recovery Chelation Precipitation
ISSN号1001-0742
英文摘要Strongly acidic wastewater produced in nonferrous metal smelting industries often con-tains high concentrations of Ni(II), which is a valuable metal. In this study, the precipitation of Ni(II) from strongly acidic wastewater using sodium dimethyldithiocarbamate (DDTC) as the precipitant was evaluated. The effects of various factors on precipitation were investigated, and the precipitation mechanism was also identified. Finally, the nickel in the precipitates was recovered following a pyrometallurgical method. The results show that, under optimised conditions (DDTC:Ni(II) molar ratio = 4:1; temperature = 25 degrees C), the Ni(II) removal efficiency reached 99.3% after 10 min. In strongly acidic wastewater, the dithiocarbamate group of DDTC can react with Ni(II) to form DDTC-Ni precipitates. Further recovery experiments revealed that high-purity NiO can be obtained by the calcination of DDTC-Ni precipitates, with the nickel recovery efficiency reaching 98.2%. The gas released during the calcination process was composed of NO2, CS2, H2O, CO2, and SO2. These results provide a basis for an effective Ni(II) recovery method from strongly acidic wastewater. (C) 2020 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
WOS研究方向Environmental Sciences
源URL[http://ir.rcees.ac.cn/handle/311016/45991]  
专题生态环境研究中心_环境水质学国家重点实验室
作者单位1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing Key Lab Ind Wastewater Treatment & Resour, Beijing 100085, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China
推荐引用方式
GB/T 7714
Yang, Xin,Peng, Xianjia,Kong, Linghao,et al. Removal of Ni(II) from strongly acidic wastewater by chelating precipitation and recovery of NiO from the precipitates[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,104:365-375.
APA Yang, Xin,Peng, Xianjia,Kong, Linghao,&Hu, Xingyun.(2021).Removal of Ni(II) from strongly acidic wastewater by chelating precipitation and recovery of NiO from the precipitates.JOURNAL OF ENVIRONMENTAL SCIENCES,104,365-375.
MLA Yang, Xin,et al."Removal of Ni(II) from strongly acidic wastewater by chelating precipitation and recovery of NiO from the precipitates".JOURNAL OF ENVIRONMENTAL SCIENCES 104(2021):365-375.

入库方式: OAI收割

来源:生态环境研究中心

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