Arsenite adsorption on cryogels embedded with iron-aluminium double hydrous oxides: Possible polishing step for smelting wastewater?

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Fältnamn	Indikatorer	Metadata
000		03562naa a2200301 4500
001		oai:lup.lub.lu.se:ffa93da1-c500-431b-ba60-dc07ff935adc
003		SwePub
008		160401s2013 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://lup.lub.lu.se/record/36281022 URI
024	7	a https://doi.org/10.1016/j.jhazmat.2013.02.0222 DOI
040		a (SwePub)lu
041		a engb eng
042		9 SwePub
072	7	a art2 swepub-publicationtype
072	7	a ref2 swepub-contenttype
100	1	a Suresh, Prashanthu Lund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)biot-psh
245	1 0	a Arsenite adsorption on cryogels embedded with iron-aluminium double hydrous oxides: Possible polishing step for smelting wastewater?
264	1	b Elsevier BV,c 2013
520		a Arsenic is among the most toxic elements and it commonly exists in water as arsenite (As(III)) and arsenate (As(V)) ions. As(III) removal often requires a pre-oxidation or pH adjustment step and it is a challenge to adsorb As(III) at circumneutral pH. In this study, iron-aluminium double hydrous oxides were synthesized and incorporated into cryogels. The resulting composite cryogels were evaluated for As(III) adsorption. Initial experiments indicated that the adsorbent showed similar adsorption kinetics for both As(V) and As(III) ions. The adsorption of As(III) best fit the Langmuir isotherm and the maximum adsorption capacity was 24.6mg/g. Kinetic modeling indicated that the mechanism of adsorption was chemisorption, making the adsorbent-adsorbate interactions independent of charge and hence allowing the adsorbent to function equally efficient across pH 4-11. A Swedish smelting wastewater was used to evaluate the adsorption performance in continuous mode. The studies showed that the adsorbent was successful in reducing the arsenic concentrations below the European Union emission limit (0.15mg/l) in a smelting wastewater collected after two precipitation processes. The arsenic removal was obtained without requiring a pH adjustment or a pre-oxidation step, making it a potential choice as an adsorbent for As(III) removal from industrial wastewaters.
650	7	a TEKNIK OCH TEKNOLOGIERx Industriell bioteknik0 (SwePub)2092 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Industrial Biotechnology0 (SwePub)2092 hsv//eng
700	1	a Önnby, Lindau Lund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)biot-lno
700	1	a Kirsebom, Haraldu Lund University,Lunds universitet,Bioteknik,Centrum för tillämpade biovetenskaper,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Biotechnology,Center for Applied Life Sciences,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)med-hko
710	2	a Bioteknikb Centrum för tillämpade biovetenskaper4 org
773	0	t Journal of Hazardous Materialsd : Elsevier BVg 250, s. 469-476q 250<469-476x 1873-3336x 0304-3894
856	4	u http://dx.doi.org/10.1016/j.jhazmat.2013.02.022y FULLTEXT
856	4 8	u https://lup.lub.lu.se/record/3628102
856	4 8	u https://doi.org/10.1016/j.jhazmat.2013.02.022

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Av författaren/redakt...: Suresh, Prashant ...; Önnby, Linda; Kirsebom, Harald

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TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Industriell biot ...

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Av lärosätet: Lunds universitet

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