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- Title
Surfactant-assisted enhancement of bioremediation rate for hexavalent chromium by water extract of Sajina ( Moringa oleifera ) flower.
- Authors
Mukherjee, Kakali; Nandi, Rumki; Saha, Debabrata; Saha, Bidyut
- Abstract
The presence of hexavalent chromium in waste water is a serious environmental problem due to its toxicity and carcinogenicity. Bioremediation is an efficient alternative to the conventional chemical methods of treatment.Bioremediation of toxic hexavalent chromium is done by the reduction of hexavalent chromium to relatively less toxic trivalent chromium. In this study, water extract of Sajina flower, which contains different types of reducing components such as sugar, amino acid, is used as reductant and the rate of bioremediation is increased by treatment with anionic and neutral surfactants. Here surfactants are used as catalyst in the bioremediation process. Sodiumdodecyl sulfate (SDS) is found to be the best catalyst. In the absence of surfactants, 60.37% of the total chromium(VI) is reduced within 285 h, whereas the removal percentage increases up to 96.25 and 99.37% in the presence of TX-100 and SDS, respectively, in minimum time.
- Subjects
SURFACE active agents; CHROMIUM removal (Sewage purification); CHROMIUM removal (Water purification); MORINGA oleifera; CHROMIUM in water
- Publication
Desalination & Water Treatment, 2015, Vol 54, Issue 2, p525
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.884477