Chockalingam, Evvie and Sivapriya, K and Subramanian, S and Chandrasekaran, S (2005) Rice husk filtrate as a nutrient medium for the growth of Desulfotomaculum nigrificans: characterisation and sulfate reduction studies. In: Bioresource Technology, 96 (17). pp. 1880-1888.
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Abstract
The filtrate obtained by interacting a known amount of rice husk with deionised, Milli-Q water was assessed as a carbon source and nutrient medium for the growth of Desulfotomaculum nigrificans, a typical sulfate-reducing bacterium. The filtrate contained essential growth constituents such as magnesium, potassium, phosphorous apart from calcium, sodium, chloride and sulfate ions. Based on the $^{1}H$ and $^{13}C NMR$ characterization studies, the organic composition of the components dissolved from the rice husk, was found to be: (i) 66% lignocellulosic material, (ii) 24% xylose + arabinose and (iii) 10% galactose. The growth studies indicated a 15-fold increase in the bacterial cell number in about 20 days. Nearly 81% and 66% reduction in sulfate concentration could be achieved in about 28 days, from the solutions containing initial sulfate concentrations of 550 mg/l and 1200 mg/l respectively. In both the cases studied, the iron concentration could be reduced by over 85%.
Item Type: | Journal Article |
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Publication: | Bioresource Technology |
Publisher: | Elsevier Science Ltd |
Additional Information: | Copyright for this article belongs to Elsevier. |
Keywords: | Rice husk;Carbon source;SRB;NMR;FTIR;Dsm. nigrificans |
Department/Centre: | Division of Chemical Sciences > Organic Chemistry Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy) |
Date Deposited: | 17 Oct 2005 |
Last Modified: | 19 Sep 2010 04:20 |
URI: | http://eprints.iisc.ac.in/id/eprint/3834 |
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