Developing a High Efficient Process Integrating Protein Extraction with Cellulosic Ethanol Production from Caragana korshinskii Kom

Abstract:

Caragana Korshinskii Kom is a widely grown deciduous shrub in the region of inner magnolia. A full utilization of its useful components holds great potential for cellulosic ethanol production in an efficient and economic way. The remaining residues after protein extraction contain 29.02% cellulose and 19.61% hemicellulose, offers a potential feedstock for cellulosic ethanol production. Fermentable capability of hydrolysate derived from pretreated biomass is strongly dependent on pretreatment methods. In this work, three hydrolysis methods (alkaline hydrolysis, acid hydrolysis and acid-alkali hydrolysis) were compared by its digestibility. Alkali pretreatment could help greatly to cellulose degradation. The conversion percentage of cellulose and hemicellulose was increased to 1.43% and 13.01%, respectively. Without any nutrient addition, hydrolysate from alkaline pretreated biomass showed relative fermentable capability by Candida Tropicalis with a final ethanol concentration of 5.4 g/L. A mass balance of the whole process integrating protein extraction and cellulosic ethanol production indicated that 1000kg C. Korshinskii Kom leaves will produce 154 kg crude proteins, and the residues will produce 18 kg ethanol.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 5545-5549
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.5545
• Online since: May 2012
• Authors: Cheng Zhong, Rui Wang, Li Hua Fan, Shi Ru Jia, Zhao Zhou
• Keywords: Caragana korshinskii Kom, Cellulosic Ethanol, Mass Balance

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