Selective and Efficient Photoextraction of Aqueous Cr(VI) as a Solid-State Polyhydroxy Cr(V) Complex for Environmental Remediation and Resource Recovery

Autor:	Ling Yao, Yezi Hu, Yingtong Zou, Zhuoyu Ji, Shuxian Hu, Cong Wang, Ping Zhang, Hui Yang, Zewen Shen, Duoyue Tang, Sai Zhang, Guixia Zhao, Xiangke Wang
Rok vydání:	2022
Předmět:	2-Propanol Chromium Water Environmental Chemistry Esters General Chemistry Hydrogen-Ion Concentration Wastewater Solid Waste Stainless Steel Environmental Restoration and Remediation
Zdroj:	Environmental Science & Technology. 56:14030-14037
ISSN:	1520-5851 0013-936X
DOI:	10.1021/acs.est.2c03994
Popis:	Aqueous hexavalent chromium (Cr(VI)) treatment and chromium resource recovery toward Cr-containing wastes are of significant importance and necessity to both wastewater remediation and resource recovery. Herein, via mild photoreaction conditions with isopropanol (IPA) as an electron donor, a catalyst-free strategy for aqueous Cr(VI) extraction to form an insoluble polyhydroxy Cr(V) complex is developed for the first time. Aqueous Cr(VI) with concentration from 5 to 150 ppm can be efficiently extracted with high selectivity even in the presence of coexisting ions, and the total Cr concentration in residue solution can be as low as 0.5 ppm. The Cr resource could be efficiently recovered as pure Cr
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c3c18ef13adee76352a3147b2cac26a https://doi.org/10.1021/acs.est.2c03994 Zobrazit plný text záznamu