Effect of fulvic acid on adsorptive removal of Cr(VI) and As(V) from groundwater by iron oxide-based adsorbents

Handle URI:
http://hdl.handle.net/10754/564172
Title:
Effect of fulvic acid on adsorptive removal of Cr(VI) and As(V) from groundwater by iron oxide-based adsorbents
Authors:
Uwamariya, V.; Uwamariya, V.; Petrusevski, B.; Slokar, Y. M.; Aubry, Cyril; Lens, P. N L; Amy, Gary L.; Amy, Gary L.
Abstract:
Abstract Natural contamination has become a challenging problem in drinking water production due to metal contamination of groundwater throughout the world, and arsenic and chromium are well-known toxic elements. In this study, iron oxide-coated sand (IOCS) and granular ferric hydroxide (GFH) were used to study the effects of fulvic acid (FA) on the adsorptive removal of Cr(VI) and As(V) from synthetic groundwater. IOCS and GFH were characterized by SEM/EDS, and experiments were performed at different pH levels (6, 7, and 8). The surface of IOCS and GFH showed a high content of Fe and O (75 and 60 % of the atomic composition, respectively), suggesting that they can highly effectively adsorb Cr(VI) and As(V). Adsorption tests with the simultaneous presence of As(V) and FA, on the one hand, and Cr(VI) with FA, on the other hand, revealed that the role of FA on chromate and arsenate adsorption was insignificant at almost all pH values investigated with both adsorbents. A small influence as a result of FA was only observed for the removal of As(V) by IOCS at pH 6 with a decrease of 13 and 23 % when 2 and 5 mg/l were added to the synthetic water, respectively. It was also found that organic matter (OM) was leached from the IOCS during batch adsorption experiments. The use of FEEM revealed that humic-like, fulvic-like, and protein-like organic matter fractions are present on the IOCS surface. © 2015 Springer International Publishing Switzerland.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination & Reuse Research Cntr; Biological and Environmental Sciences and Engineering (BESE) Division
Publisher:
Springer Science + Business Media
Journal:
Water, Air, & Soil Pollution
Issue Date:
15-May-2015
DOI:
10.1007/s11270-014-2193-5
Type:
Article
ISSN:
00496979
Sponsors:
The authors thank the Netherlands Government for providing financial assistance through the Netherlands Fellowship Program under Grant No. 32000022.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorUwamariya, V.en
dc.contributor.authorUwamariya, V.en
dc.contributor.authorPetrusevski, B.en
dc.contributor.authorSlokar, Y. M.en
dc.contributor.authorAubry, Cyrilen
dc.contributor.authorLens, P. N Len
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorAmy, Gary L.en
dc.date.accessioned2015-08-03T12:35:03Zen
dc.date.available2015-08-03T12:35:03Zen
dc.date.issued2015-05-15en
dc.identifier.issn00496979en
dc.identifier.doi10.1007/s11270-014-2193-5en
dc.identifier.urihttp://hdl.handle.net/10754/564172en
dc.description.abstractAbstract Natural contamination has become a challenging problem in drinking water production due to metal contamination of groundwater throughout the world, and arsenic and chromium are well-known toxic elements. In this study, iron oxide-coated sand (IOCS) and granular ferric hydroxide (GFH) were used to study the effects of fulvic acid (FA) on the adsorptive removal of Cr(VI) and As(V) from synthetic groundwater. IOCS and GFH were characterized by SEM/EDS, and experiments were performed at different pH levels (6, 7, and 8). The surface of IOCS and GFH showed a high content of Fe and O (75 and 60 % of the atomic composition, respectively), suggesting that they can highly effectively adsorb Cr(VI) and As(V). Adsorption tests with the simultaneous presence of As(V) and FA, on the one hand, and Cr(VI) with FA, on the other hand, revealed that the role of FA on chromate and arsenate adsorption was insignificant at almost all pH values investigated with both adsorbents. A small influence as a result of FA was only observed for the removal of As(V) by IOCS at pH 6 with a decrease of 13 and 23 % when 2 and 5 mg/l were added to the synthetic water, respectively. It was also found that organic matter (OM) was leached from the IOCS during batch adsorption experiments. The use of FEEM revealed that humic-like, fulvic-like, and protein-like organic matter fractions are present on the IOCS surface. © 2015 Springer International Publishing Switzerland.en
dc.description.sponsorshipThe authors thank the Netherlands Government for providing financial assistance through the Netherlands Fellowship Program under Grant No. 32000022.en
dc.publisherSpringer Science + Business Mediaen
dc.subjectAdsorptionen
dc.subjectAs(V)en
dc.subjectCr(VI)en
dc.subjectFulvic aciden
dc.subjectGroundwateren
dc.subjectIron oxide-based adsorbentsen
dc.titleEffect of fulvic acid on adsorptive removal of Cr(VI) and As(V) from groundwater by iron oxide-based adsorbentsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.identifier.journalWater, Air, & Soil Pollutionen
dc.contributor.institutionUNESCO-IHE Institute for Water Education, PO box 3015, Delft, Netherlandsen
dc.contributor.institutionDepartment of Chemistry, National University of Rwanda, P.O. box 56, Butare, Rwandaen
kaust.authorAubry, Cyrilen
kaust.authorAmy, Gary L.en
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