About: Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based treatment

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An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based treatment
Creator	Liu, Haizhou Yu, Xuejun
source	Medline; PMC
abstract	Chromium (Cr) typically exists in either trivalent and hexavalent oxidation states in drinking water, i.e., Cr(III) and Cr(VI), with Cr(VI) of particular concern in recent years due to its high toxicity and new regulatory standards. This Account presented a critical analysis of the sources and occurrence of Cr(VI) in drinking water in the United States, analyzed the equilibrium chemistry of Cr(VI) species, summarized important redox reaction relevant to the fate of Cr(VI) in drinking water, and critically reviewed emerging Cr(VI) treatment technologies. There is a wide occurrence of Cr(VI) in US source drinking water, with a strong dependence on groundwater sources, mainly due to naturally weathering of chromium-containing aquifers. Challenges regarding traditional Cr(VI) treatment include chemical cost, generation of secondary waste and inadvertent re-generation of Cr(VI) after treatment. To overcome these challenges, reductive Cr(VI) treatment technologies based on the application of stannous tin or electron-releasing titanium dioxide photocatalyst hold extreme promise in the future. To moving forward in the right direction, three key questions need further exploration for the technology implementation, including effective management of residual waste, minimizing the risks of Cr(VI) re-occurrence downstream of drinking water treatment plant, and promote the socioeconomic drivers for Cr(VI) control in the future.
has issue date	2020-08-10(xsd:dateTime)
bibo:doi	10.1007/s11783-020-1267-4
bibo:pmid	32839673
has license	no-cc
sha1sum (hex)	ed47dcd5e51d8d096494fa3ae221c0f40b5d4f76
schema:url	https://doi.org/10.1007/s11783-020-1267-4
resource representing a document's title	Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based treatment
has PubMed Central identifier	PMC7439242
has PubMed identifier	32839673
schema:publication	Front Environ Sci Eng
resource representing a document's body	covid:ed47dcd5e51d8d096494fa3ae221c0f40b5d4f76#body_text
is schema:about of	named entity 'drinking water' named entity 'Chemistry' named entity 'photocatalyst' named entity 'microfiltration' named entity 'band gap' »more»

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