Surfactant-assisted enhancement of bioremediation rate for hexavalent chromium by water extract of Sajina (Moringa oleifera) flower

Autor:	Kakali Mukherjee, Debabrata Saha, Rumki Nandi, Bidyut Saha
Rok vydání:	2014
Předmět:	inorganic chemicals Waste management Chemistry chemistry.chemical_element Ocean Engineering Pollution Catalysis Moringa chemistry.chemical_compound Chromium Bioremediation Pulmonary surfactant Wastewater Hexavalent chromium Sulfate Water Science and Technology Nuclear chemistry
Zdroj:	Desalination and Water Treatment. 54:525-532
ISSN:	1944-3986 1944-3994
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b753d6f75c315b7018dcf4e8932e610e https://doi.org/10.1080/19443994.2014.884477 Zobrazit plný text záznamu