Arsenic removal from alkaline leaching solution using Fe (III) precipitation

doi:10.1080/09593330.2018.1429495

	Arsenic removal from alkaline leaching solution using Fe (III) precipitation
	Wang, Yongliang 1; Lv, Cuicui 1,2; Xiao, Li 1,2; Fu, Guoyan 1,2; Liu, Ya 1,2; Ye, Shufeng 1; Chen, Yunfa 1
刊名	ENVIRONMENTAL TECHNOLOGY
	2019-06-07
卷号	40 期号:13 页码:1714-1720
关键词	Arsenic precipitates ferric arsenate Fe As ratio leaching toxicity
ISSN号	0959-3330
DOI	10.1080/09593330.2018.1429495
英文摘要	The alkaline leaching solution from arsenic-containing gold concentrate contains a large amount of arsenate ions, which should be removed because it is harmful to the production process and to the environment. In this study, conventional Fe (III) precipitation was used to remove arsenic from the leaching solution. The precipitation reaction was carried out at the normal temperature, and the effects of pH value and Fe/As ratio on the arsenic removal were investigated. The results show that the removal rate of arsenic is distinctive at different pH values, and the effect is best within the pH range of 5.25-5.96. The removal rate can be further increased by increasing the ratio of Fe/As. When the pH = 5.25-5.96 and Fe/As > 1.8, the arsenic in the solution can be reduced to below 5 mg/L. However, the crystallinity of ferric arsenate is poor, and the particle size is small, most of which is about 1 mu m. The leaching toxicity test shows the leaching toxicity of precipitates gradually decreased by the increase of Fe/As. The precipitates can be stored safely as the ratio of Fe/As exceeded 2.5.
资助项目	Key Projects in the National Science & Technology Pillar Program[2012BAB08B04] ; National High Technology Research and Development Program of China[2011AA06A104]
WOS关键词	CRYSTALLINE SCORODITE ; AQUEOUS-SOLUTIONS ; WATER ; COAGULATION ; STABILITY
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000466592300009
资助机构	Key Projects in the National Science & Technology Pillar Program ; National High Technology Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/28165]
专题	中国科学院过程工程研究所
通讯作者	Wang, Yongliang; Ye, Shufeng
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yongliang,Lv, Cuicui,Xiao, Li,et al. Arsenic removal from alkaline leaching solution using Fe (III) precipitation[J]. ENVIRONMENTAL TECHNOLOGY,2019,40(13):1714-1720.
APA	Wang, Yongliang.,Lv, Cuicui.,Xiao, Li.,Fu, Guoyan.,Liu, Ya.,...&Chen, Yunfa.(2019).Arsenic removal from alkaline leaching solution using Fe (III) precipitation.ENVIRONMENTAL TECHNOLOGY,40(13),1714-1720.
MLA	Wang, Yongliang,et al."Arsenic removal from alkaline leaching solution using Fe (III) precipitation".ENVIRONMENTAL TECHNOLOGY 40.13(2019):1714-1720.