Pre-treatment of rice husks for fungal fermentation

Ang, T.N. and Ngoh, G.C. and Chua, A.S.M. (2009) Pre-treatment of rice husks for fungal fermentation. In: CHEMECA Conference 2009, 27-30 Sept 2009, Perth, Australia.

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Agro by-products can be sustainable feedstock for the production of various versatile bio-products. The pre- treatment of which is needed for optimal utilization of recalcitrant lignocellulosic biomass. This study investigated the effect of various acids and alkalis on the pre-treatment of rice husks to make it suitable for use in fermentation. Dry rice husks with the weight of 10 g were pre-treated with 1 % (w/v) of five acids and two alkalis with water loading of 10 ml/g of rice husks. The rice husks that was pre-treated with 1 % (w/v) nitric acid produced the highest total reducing sugars in the hydrolyzate (approximately 4.2 mg/ g of rice husks) after 8 hours at 100 oC followed by pre-treatment with acetic acid (~0.7 mg) and sodium hydroxide (~0.4 mg). Hydrolysis with other acids and alkali produced less than 0.1 mg reducing sugars/ g rice husks. In conclusion, nitric acid was found to be the best hydrolyzing reagent for pre-treatment of rice husks in this study.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Keywords: Rice husks; lignocellulosic biomass; pre-treatment; hydrolyzing reagent
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Mr. Mohd Samsul Ismail
Date Deposited: 16 Jul 2014 00:01
Last Modified: 16 Jul 2014 00:01

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