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http://dx.doi.org/10.9713/kcer.2011.49.3.292

Pretreatment Characteristics of Ammonia Soaking Method for Cellulosic Biomass  

Park, Yong-Cheol (Department of Chemical Engineering, Kyonggi University)
Kim, Jin-Woo (Samsung Advanced Institute of Technology)
Kim, Jun-Seok (Department of Chemical Engineering, Kyonggi University)
Publication Information
Korean Chemical Engineering Research / v.49, no.3, 2011 , pp. 292-296 More about this Journal
Abstract
Liberation of fermentable sugars from lignocellulosic biomass is one of the key challenges in production of cellulosic ethanol. Aqueous ammonia cleaves ether and ester bonds in lignin carbohydrate complexes. It is an effective swelling reagent for lignocellulosic biomass. The aqueous ammonia pretreatment selectively reduces the lignin content of biomass. However, at high temperatures, this process solubilizes more than 50% of the hemicellulose in the biomass. Here we conducted a SAA(Soaking in Aqueous Ammonia) process by moderate reaction temperatures at atmospheric pressure using various lignocellulosicbiomass. The optimum condition of this process was 15 wt% of aqueous ammonia at 50 of reaction time during 72 hr. The delignification was up to 60% basis on initial biomass and the enzymatic digestibility was 60-90% for agricultural biomass, respectively.
Keywords
Biomass Pretreatment; SAA; Enzymatic Hydrolysis; Bio Ethanol;
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