Authors: Isarankura-Na-Ayudhya, Chartchalerm
Kongpanpee, Thikamporn
Prabkate, Ponpitak
Prachayasittikul, Virapong
Tantimongcolwat, Tanawut
Title: Appropriate Technology for the Bioconversion of Water Hyacinth (Eichhornia crassipes) to Liquid Ethanol
Other Titles: Future Prospects for Community Strengthening and Sustainable Development
Language (ISO): en
Abstract: This article appraises the need for introducing appropriate technology to improve the production of renewable energy, particularly on the community basis and social aspect of sustainability. Using two-sequential steps of acid hydrolysis (10% sulfuric acid) and yeast (Candida shehatae; xylose-fermenting yeast) fermentation, bioconversion of water hyacinth (Eichhornia crassipes; a noxious weed and fast growing aquatic plant widely distributed in many tropical regions of the world) to liquid ethanol has successfully been performed. The maximum ethanol yield coefficient of 0.19 g g-1 WH with the productivity of 0.008 g l-1 h-1 was achieved. This is as well comparable to those obtained from the enzymatic saccharification and/or the fermentation of acid-pretreated water hyacinth hydrolysate using fully-equipped fermenter reported elsewhere. More importantly, determinations of xylose and ethanol contents can potentially be performed using two reliable colorimetric approaches (Phloroglucinol and Dichromate assays, respectively) in conjunction with home-made portable photometer. The technology presented herein can be transferred and implemented to gain opportunity of becoming self-reliance of community in the third world countries.
Subject Headings: acid hydrolysis
bioenergyCandida shehatae
water hyacinth
Issue Date: 2007-06-08
Appears in Collections:Original Articles

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