دورية أكاديمية
Bioconversion of selenate in methanogenic anaerobic granular sludge.
| العنوان: | Bioconversion of selenate in methanogenic anaerobic granular sludge. |
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| المؤلفون: | Astratinei V; National Research and Development Institute for Environmental Protection, Splaiul Independentei 294, Bucharest, Romania., van Hullebusch E, Lens P |
| المصدر: | Journal of environmental quality [J Environ Qual] 2006 Sep 13; Vol. 35 (5), pp. 1873-83. Date of Electronic Publication: 2006 Sep 13 (Print Publication: 2006). |
| نوع المنشور: | Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Wiley Country of Publication: United States NLM ID: 0330666 Publication Model: Electronic-Print Cited Medium: Print ISSN: 0047-2425 (Print) Linking ISSN: 00472425 NLM ISO Abbreviation: J Environ Qual Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 2020- : [Hoboken, NJ] : Wiley Original Publication: Madison, WI : Published cooperatively by American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
| مواضيع طبية MeSH: | Water Purification*/methods, Bacteria, Anaerobic/*growth & development , Methane/*biosynthesis , Selenium Compounds/*metabolism , Sewage/*microbiology , Water Pollutants, Chemical/*metabolism, Anaerobiosis/physiology ; Bioreactors/microbiology ; Selenic Acid |
| مستخلص: | The capacity of anaerobic granular sludge to remove selenate from contaminated wastewater was investigated. The potential of different types of granular sludge to remove selenate from the liquid phase was compared to that of suspended sludge and contaminated soil and sediment samples. The selenate removal rates ranged from 400 to 1500 microg g VSS(-1) h(-1), depending on the source of biomass, electron donor, and the initial selenate concentration. The granular structure protects the microorganisms when exposed to high selenate concentrations (0.1 to 1 mM). Anaerobic granular sludge "Eerbeek," originating from a UASB reactor treating paper mill wastewater, removed about 90, 50, and 36% of 0.1, 0.5, and 1 mM of Se, respectively, from the liquid phase when incubated with 20 mM lactate at 30 degrees C and pH 7.5. Selenite, elemental Se (Se(o)), and metal selenide precipitates were the conversion products. Enrichments from the anaerobic granular sludge "Eerbeek" were able to convert 90% of the 10-mM selenate to Se(o) at a rate of 1505 microg Se(VI) g cells(-1) h(-1), a specific growth rate of 0.0125 g cells h(-1), and a yield of 0.083 g cells mg Se(-1). Both microbial metabolic processes (e.g dissimilatory reduction) as well as microbially mediated physicochemical mechanisms (adsorption and precipitation) contribute to the removal of selenate from the Se-containing medium. |
| المشرفين على المادة: | 0 (Selenium Compounds) 0 (Sewage) 0 (Water Pollutants, Chemical) HV0Y51NC4J (Selenic Acid) OP0UW79H66 (Methane) |
| تواريخ الأحداث: | Date Created: 20060916 Date Completed: 20061228 Latest Revision: 20131121 |
| رمز التحديث: | 20240628 |
| DOI: | 10.2134/jeq2005.0443 |
| PMID: | 16973629 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 0047-2425 |
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| DOI: | 10.2134/jeq2005.0443 |