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Treatment of metal ions and metal–chelate complexes in water with biologically produced H2S
Center for Chemistry and Chemical Engineering, Department of Biotechnology, Lund University.
Umeå University, Faculty of Science and Technology, Department of Chemistry.
Center for Chemistry and Chemical Engineering, Department of Biotechnology, Lund University.
2012 (English)In: International Journal of Environment and Waste Management, ISSN 1478-9876, E-ISSN 1478-9868, Vol. 9, no 3/4, 330-346 p.Article in journal (Refereed) Published
Abstract [en]

The possibility to precipitate Pb and Cu as metal sulphides has been investigated. The metals are present as metal chelates, a situation that will appear after soil washing for remediation of polluted soil. Sulphide for the precipitation step is obtained via a bioreactor containing Sulphate-Reducing Bacteria (SRB). The effects on the precipitation process for copper and lead were studied in the presence of four different chelating substances (EDTA, NTA, CDTA, DTPA), with a precipitation of more than 98% for both Pb2+ and Cu2+. The results clearly indicate that chelate washing and the subsequent precipitation is a viable technology.

 

 

 

Place, publisher, year, edition, pages
InderScience Publishers, 2012. Vol. 9, no 3/4, 330-346 p.
Keyword [en]
metal ions, chelator, SRB, sulphate-reducing bacteria, precipitation, remediation, CDTA, DTPA, EDTA, NTA
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-50549OAI: oai:DiVA.org:umu-50549DiVA: diva2:464594
Available from: 2011-12-13 Created: 2011-12-13 Last updated: 2017-12-08Bibliographically approved

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