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Article: Reduction of hexavalent chromium by ascorbic acid in aqueous solutions

TitleReduction of hexavalent chromium by ascorbic acid in aqueous solutions
Authors
KeywordsHexavalent chromium
Reduction
Remediation
Vitamin C
Issue Date2004
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphere
Citation
Chemosphere, 2004, v. 57 n. 7, p. 609-613 How to Cite?
AbstractHexavalent chromium is a priority pollutant in the USA and many other countries. Reduction of Cr(VI) to Cr(III) is environmentally favorable as the latter species is not toxic to most living organisms and also has a low mobility and bioavailability. Reduction of Cr(VI) by ascorbic acid (vitamin C) as a reductant was studied using potassium dichromate solution as the model pollutant. Effects of concentration of vitamin C, pH, temperature, irradiation and reaction time on the reduction of Cr(VI) were examined. Cr(VI) might be reduced by vitamin C not only in acidic conditions but also in weakly alkaline solutions. The reduction of Cr(VI) by vitamin C might occur not only under irradiation but also in the dark. Vitamin C is an important biological reductant in humans and animals, and not toxic. It is water-soluble and can easily permeate through various types of soils. The results indicate that vitamin C could be used in effective remediation of Cr(VI)-contaminated soils and groundwater in a wide range of pH, with or without sunlight. © 2004 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71715
ISSN
2015 Impact Factor: 3.698
2015 SCImago Journal Rankings: 1.536
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, XRen_HK
dc.contributor.authorLi, HBen_HK
dc.contributor.authorLi, XYen_HK
dc.contributor.authorGu, JDen_HK
dc.date.accessioned2010-09-06T06:34:31Z-
dc.date.available2010-09-06T06:34:31Z-
dc.date.issued2004en_HK
dc.identifier.citationChemosphere, 2004, v. 57 n. 7, p. 609-613en_HK
dc.identifier.issn0045-6535en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71715-
dc.description.abstractHexavalent chromium is a priority pollutant in the USA and many other countries. Reduction of Cr(VI) to Cr(III) is environmentally favorable as the latter species is not toxic to most living organisms and also has a low mobility and bioavailability. Reduction of Cr(VI) by ascorbic acid (vitamin C) as a reductant was studied using potassium dichromate solution as the model pollutant. Effects of concentration of vitamin C, pH, temperature, irradiation and reaction time on the reduction of Cr(VI) were examined. Cr(VI) might be reduced by vitamin C not only in acidic conditions but also in weakly alkaline solutions. The reduction of Cr(VI) by vitamin C might occur not only under irradiation but also in the dark. Vitamin C is an important biological reductant in humans and animals, and not toxic. It is water-soluble and can easily permeate through various types of soils. The results indicate that vitamin C could be used in effective remediation of Cr(VI)-contaminated soils and groundwater in a wide range of pH, with or without sunlight. © 2004 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/chemosphereen_HK
dc.relation.ispartofChemosphereen_HK
dc.subjectHexavalent chromiumen_HK
dc.subjectReductionen_HK
dc.subjectRemediationen_HK
dc.subjectVitamin Cen_HK
dc.subject.meshAscorbic Acid - chemistryen_HK
dc.subject.meshChromium - chemistryen_HK
dc.subject.meshEnvironmental Pollution - prevention & controlen_HK
dc.subject.meshHydrogen-Ion Concentrationen_HK
dc.subject.meshKineticsen_HK
dc.subject.meshOxidation-Reduction - radiation effectsen_HK
dc.subject.meshSpectrophotometry, Ultravioleten_HK
dc.subject.meshSunlighten_HK
dc.subject.meshTemperatureen_HK
dc.subject.meshUltraviolet Raysen_HK
dc.subject.meshWater - chemistryen_HK
dc.titleReduction of hexavalent chromium by ascorbic acid in aqueous solutionsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0045-6535&volume=57&spage=609&epage=613&date=2004&atitle=Reduction+of+hexavalent+chromium+by+ascorbic+acid+in+aqueous+solutionsen_HK
dc.identifier.emailLi, XY: xlia@hkucc.hku.hken_HK
dc.identifier.emailGu, JD: jdgu@hkucc.hku.hken_HK
dc.identifier.authorityLi, XY=rp00222en_HK
dc.identifier.authorityGu, JD=rp00701en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.chemosphere.2004.07.031en_HK
dc.identifier.pmid15488923-
dc.identifier.scopuseid_2-s2.0-5444223630en_HK
dc.identifier.hkuros98019en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-5444223630&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue7en_HK
dc.identifier.spage609en_HK
dc.identifier.epage613en_HK
dc.identifier.isiWOS:000224879300010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridXu, XR=7405293882en_HK
dc.identifier.scopusauthoridLi, HB=25649944400en_HK
dc.identifier.scopusauthoridLi, XY=26642887900en_HK
dc.identifier.scopusauthoridGu, JD=7403129601en_HK

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