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Biodegradation of some organic reagents from mineral process effluents
Indian Institute of Science.
Indian Institute of Science.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
1999 (English)In: Biohydrometallurgy and the Environment toward the Mining of the 21st century: Proceedings of the International Biohydrometallurgy Symposium IBS 1999, Madrid, Spain / [ed] R. Amils; A. Ballester, Elsevier, 1999, Vol. Part B: Molucular biology, biosorption, bioremediation, p. 687-696Conference paper, Published paper (Refereed)
Abstract [en]

The utility of a soil microbe, namely Bacillus polymyxa, in the removal of organic reagents such as dodecylamine, ether diamine, isopropyl xanthate and sodium oleate from aqueous solutions is demonstrated. Time-bound removal of the above organic reagents from an alkaline solution was investigated under different experimental conditions during bacterial growth and in the presence of metabolites by frequent monitoring of residual concentrations as a function of time, reagent concentration and cell density. The stages and mechanisms in the biodegradation process were monitored through UV-visible and FTIR spectroscopy. Surface chemistry of the bacterial cells as well as the biosorption tendency for various organics were also established through electrokinetic and adsorption density measurements. Both the cationic amines were found to be biosorbed followed by their degradation through bacterial metabolism. The presence of the organic reagents promoted bacterial growth through effective bacterial utilization of nitrogen and carbon from the organics. Under optimal conditions, complete degradation and bioremoval of all the organics could be achieved

Place, publisher, year, edition, pages
Elsevier, 1999. Vol. Part B: Molucular biology, biosorption, bioremediation, p. 687-696
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-33029DOI: 10.1016/S1572-4409(99)80159-XScopus ID: 2-s2.0-77957039561Local ID: 7c254860-b0de-11de-8293-000ea68e967bISBN: 0-444-50193-2 (print)OAI: oai:DiVA.org:ltu-33029DiVA, id: diva2:1006264
Conference
International Biohydrometallurgy Symposium : 20/06/1999 - 23/06/1999
Note
Godkänd; 1999; 20091004 (hrao)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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Rao, K. HanumanthaForssberg, Eric

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