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JSIR Vol.71(01) [January 2012] >


Title: Enhanced acid hydrolysis for bioethanol production from water hyacinth (Eichhornia crassipes) using fermentating yeast Candida intermedia NRRL Y-981
Authors: Manivannan, A
Jayarani, P Hepsibha
Narendhirakannan, R T
Keywords: Acid hydrolysis
Bioconversion
Bioethanol
Candida intermedia
Water hyacinth
Issue Date: Jan-2012
Publisher: NISCAIR-CSIR, India
Abstract: This study presents bioconversion of water hyacinth (Eichhornia crassipes) to bioethanol using two-sequential steps of acid hydrolysis (10% sulfuric acid) and yeast (Candida intermedia) fermentation. Maximum ethanol yield co-efficient was comparable to those obtained through enzymatic saccharification and fermentation of acid hydrolysate using fully equipped fermentor. A maximum ethanol yield (coefficient, 0.21 g g-1; productivity, 0.010 g l-1h-1) was comparable to predicted value (0.23 g g-1) obtained by CCD (Central Composite Design). Two colorimetric methods (phloroglucinol and dichromate assays) were used for determination of xylose and ethanol using UV-Vis spectrophotometer. Although maximum ethanol concentration was low, an economically efficient overall process was carried out to convert a lignocellulosic biomass to bioethanol.
Page(s): 51-56
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Source:JSIR Vol.71(01) [January 2012]

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