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The fate of selenium in a pilot plant for biological iron and manganese removal

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dc.contributor.authorDippon-Deissler, Urs
dc.contributor.authorMahringer, Daniel
dc.contributor.authorRuhl, Aki Sebastian
dc.contributor.authorSteuer, Andrea
dc.date.accessioned2024-06-16T12:43:28Z
dc.date.available2024-06-16T12:43:28Z
dc.date.issued2023
dc.description.abstractSelenium (Se) is essential to human health, yet harmful in high doses. Of the water-soluble Se redox species, Se(IV) readily adsorbs onto iron and aluminium oxides. Se(VI), the dominant form in oxygenated waters, is more mobile and less readily adsorbed. In this study, the removal of Se(VI) by reduction with Fe(II) to Se(IV) and subsequent adsorption onto iron hydroxides is investigated in a pilot plant for biological iron and manganese removal from groundwater to investigate an economical approach for Se removal during drinking water production. While Se(IV) is removed by up to 90%, Se(VI) shows no removal over 48 h. In batch-shaking tests, the adsorption of Se(IV) and Se(VI) onto iron hydroxides with and without addition of Fe(II) or dithionite as reducing agents was studied. Se(IV) was removed to a greater extent by adsorption than Se(VI) (7% and 2.6%, respectively, at a starting concentration of 0.1 mg/L) and the addition of reducing agents resulted in no significantly higher removal of Se(VI). Reducing Se(VI) with Fe(II) or dithionite and consequent adsorption onto iron hydroxides can therefore be excluded as viable removal mechanism for Se(VI). © 2023 by the authorsen
dc.format.extent1 Onlineresource
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-1117
dc.identifier.urihttps://openumwelt.de/handle/123456789/1687
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleThe fate of selenium in a pilot plant for biological iron and manganese removal
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleWater
local.bibliographicCitation.originalDOI10.3390/w15173147
local.bibliographicCitation.volume15 (2023), Heft 17
local.collectionAufsätze
local.identifier.catalogId02500276
local.ingest.leader04692naa a2200000uu 4500
local.jointTitleTHE FATE OF SELENIUM IN A PILOT PLANT FOR BIOLOGICAL IRON AND MANGANESE REMOVAL
local.reviewtrue
local.sourcecatalog
local.source.urihttp://creativecommons.org/licenses/by/4.0/deed.de
local.staffPublicationtrue
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