title: Cost analysis of cassava cellulose utilization scenarios for ethanol production on flowsheet simulation platform.
abstract: Cassava cellulose accounts for one quarter of cassava residues and its utilization is important for improving the efficiency and profit in commercial scale cassava ethanol industry. In this study, three scenarios of cassava cellulose utilization for ethanol production were experimentally tested under same conditions and equipment. Based on the experimental results, a rigorous flowsheet simulation model was established on Aspen plus platform and the cost of cellulase enzyme and steam energy in the three cases was calculated. The results show that the simultaneous co-saccharification of cassava starch/cellulose and ethanol fermentation process (Co-SSF) provided a cost effective option of cassava cellulose utilization for ethanol production, while the utilization of cassava cellulose from cassava ethanol fermentation residues was not economically sound. Comparing to the current fuel ethanol selling price, the Co-SSF process may provide an important choice for enhancing cassava ethanol production efficiency and profit in commercial scale.
authors.affiliation: State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.forename: Zhenhong
authors.initials: Z
authors.lastname: Fang
authors.forename: Hongbo
authors.initials: H
authors.lastname: Deng
authors.forename: Xiaoxi
authors.initials: X
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Bao
mesh_terms: D001709:Biotechnology / Q000191:economics* / Q000379:methods*; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002480:Cellulase / Q000378:metabolism; D002482:Cellulose / Q000378:metabolism*; D003198:Computer Simulation; D003365:Costs and Cost Analysis; D000431:Ethanol / Q000191:economics* / Q000378:metabolism*; D005285:Fermentation / Q000187:drug effects; D006868:Hydrolysis / Q000187:drug effects; D002365:Manihot / Q000737:chemistry* / Q000187:drug effects; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000378:metabolism; D013227:Steam; D013464:Sulfuric Acids / Q000494:pharmacology
chemical_list: D013227:Steam; D013464:Sulfuric Acids; D000431:Ethanol; D002482:Cellulose; D002480:Cellulase; C033158:sulfuric acid