Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater

doi:10.1016/j.chemosphere.2021.130974

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater
	Shu, Yaorong 2; Ji, Bin 2; Li, Yuexin 2; Zhang, Wei 3; Zhang, Huining 1; Zhang, Jun 4
刊名	CHEMOSPHERE
	2021-11
卷号	282
关键词	Steel slag Hexavalent chromium removal Adsorption Redox Flocculation
ISSN号	0045-6535
DOI	10.1016/j.chemosphere.2021.130974
英文摘要	Currently, varied processes adopted to remove hexavalent chromium from aqueous solution have been realized to cause secondary pollution. As such, this study explored a green method for aqueous hexavalent chromium (Cr (VI)) reclamation by waste steel slag (SS) enhanced by natural pyrite (NP). Compared with the sole SS or NP, more efficient Cr(VI) removal was achieved by NP-SS at an initial pH value ranging from 1 to 8, resulting in a final pH value of 7-8. Cr(VI) in the solution could be initially reduced to Cr(III) by Fe2+ provided by NP, which was then bound with the OH- in the solution and the supersaturated calcium silicate hydrate on the surface of SS. In addition, the stearic acid anions existing on the surface of SS could promote the adsorption of Cr(III) to form chromium stearate. The used adsorbent could be potentially used for chromium smelting. Overall, this study provides a feasible and environmental sustainable solution to chromium reclamation from hexavalent chromiumcontaining wastewater.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000679233100007
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148996]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.Wuhan Univ Sci & Technol, Dept Water & Wastewater Engn, Wuhan 430065, Peoples R China; 3.Changsha Univ Sci & Technol, Sch Hydraul Engn, Changsha 410114, Peoples R China; 4.Guangdong Acad Sci, Inst Resources Comprehens Utilizat, Guangzhou 510651, Peoples R China
推荐引用方式 GB/T 7714	Shu, Yaorong,Ji, Bin,Li, Yuexin,et al. Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater[J]. CHEMOSPHERE,2021,282.
APA	Shu, Yaorong,Ji, Bin,Li, Yuexin,Zhang, Wei,Zhang, Huining,&Zhang, Jun.(2021).Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater.CHEMOSPHERE,282.
MLA	Shu, Yaorong,et al."Natural pyrite improved steel slag towards environmentally sustainable chromium reclamation from hexavalent chromium-containing wastewater".CHEMOSPHERE 282(2021).