Role of Humic Substances on Cr(VI) Removal from Groundwater with Pyrite

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dc.authoridKantar, Cetin/0000-0001-9747-9115
dc.contributor.authorKantar, Cetin
dc.contributor.authorBulbul, Muhammet Samet
dc.contributor.authorKeskin, Selda
dc.date.accessioned2025-01-27T21:05:47Z
dc.date.available2025-01-27T21:05:47Z
dc.date.issued2017
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractGroundwater composition may have a pronounced impact on long-termperformance of permeable reactive barriers (PRBs). Here, batch and column experiments were conducted to investigate the effects of humic acid (HA) on Cr(VI) removal by pyrite in systems containing cations such as Ca2+ and Mg2+. HAwas observed to have inhibitory effect on Cr(VI) uptake by pyrite under the experimental conditions studied (e. g., pH 3 to 8). HA sorbed onto pyrite surface and thus (1) competed against Cr(VI) for pyritic surface sites and/or (2) increased electrostatic repulsion between Cr(VI) and pyrite. In systems with HA and Ca2+/Mg2+, the Cr(VI) uptake by pyrite decreased drastically relative to HA alone due to the aggregation of HA with Ca2+/Mg2+. The formation of such HA aggregates/precipitates blocked Cr(VI) ions to reach its binding sites, thereby resulting in a substantial decrease in Cr(VI) uptake. Overall, the results have major implications for proper design and operation of PRBs with pyrite as the reactive material.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [114Y024]
dc.description.sponsorshipThe study was fully funded by the Scientific and Technological Research Council of Turkey (TUBITAK) under a contract number of 114Y024.
dc.identifier.doi10.1007/s11270-016-3233-0
dc.identifier.issn0049-6979
dc.identifier.issn1573-2932
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85008471328
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1007/s11270-016-3233-0
dc.identifier.urihttps://hdl.handle.net/20.500.12428/27789
dc.identifier.volume228
dc.identifier.wosWOS:000398366000001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofWater Air and Soil Pollution
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectPyrite
dc.subjectHumic acid
dc.subjectChromium
dc.subjectPermeable reactive barrier (PRB)
dc.subjectReduction
dc.titleRole of Humic Substances on Cr(VI) Removal from Groundwater with Pyrite
dc.typeArticle

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