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Titolo:
Environmental factors affecting selenite reduction by a mixed culture
Autore:
Wan, HS; Hao, OJ; Kim, H;
Indirizzi:
Univ Maryland, Dept Civ & Envir Engn, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 nvir Engn, College Pk, MD 20742 USA
Titolo Testata:
JOURNAL OF ENVIRONMENTAL ENGINEERING-ASCE
fascicolo: 2, volume: 127, anno: 2001,
pagine: 175 - 178
SICI:
0733-9372(200102)127:2<175:EFASRB>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELEMENTAL SELENIUM; DESULFOVIBRIO-DESULFURICANS; SELENATE REDUCTION; OXYANIONS; SEDIMENTS; BIOREMEDIATION; RESPIRATION; BACTERIA; REMOVAL; WATER;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Engineering, Computing & Technology
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Hao, OJ Univ Maryland, Dept Civ & Envir Engn, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 n, College Pk, MD 20742 USA
Citazione:
H.S. Wan et al., "Environmental factors affecting selenite reduction by a mixed culture", J ENV ENG, 127(2), 2001, pp. 175-178

Abstract

This study presents the results of batch experiments investigating selenite reduction by an enriched anaerobic mixed culture as a function of severalenvironmental factors, including pH, temperature, different electron donors and accepters, as well as initial selenite concentrations. The initial selenite reduction was a zero-order reaction and was inhibited at higher selenite concentrations (>33 mg Se/L). The optimal temperature/pH for microbialreduction occurred at 30 degreesC and pH 7.2. Selenite reduction was affected in the presence of high concentrations of sulfate [45 times the Se(IV) molar concentration], significantly affected by nitrate [105 times the Se(IV) molar concentration], and completely inhibited by chromate and oxygen. Ethanol was the preferred carbon source for selenite removal, followed by acetate, citrate, lactate, and glucose. The selenite-acclimated culture also reduces selenate without any lag period.

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Documento generato il 03/07/20 alle ore 01:48:28