Ethanol production from cotton-based waste textiles

Bioresource Technology
Azam Jeihanipour, Mohammad J Taherzadeh

Abstract

Ethanol production from cotton linter and waste of blue jeans textiles was investigated. In the best case, alkali pretreatment followed by enzymatic hydrolysis resulted in almost complete conversion of the cotton and jeans to glucose, which was then fermented by Saccharomyces cerevisiae to ethanol. If no pretreatment applied, hydrolyses of the textiles by cellulase and beta-glucosidase for 24 h followed by simultaneous saccharification and fermentation (SSF) in 4 days, resulted in 0.140-0.145 g ethanol/g textiles, which was 25-26% of the corresponding theoretical yield. A pretreatment with concentrated phosphoric acid prior to the hydrolysis improved ethanol production from the textiles up to 66% of the theoretical yield. However, the best results obtained from alkali pretreatment of the materials by NaOH. The alkaline pretreatment of cotton fibers were carried out with 0-20% NaOH at 0 degrees C, 23 degrees C and 100 degrees C, followed by enzymatic hydrolysis up to 4 days. In general, higher concentration of NaOH resulted in a better yield of the hydrolysis, whereas temperature had a reverse effect and better results were obtained at lower temperature. The best conditions for the alkali pretreatment of the cotton were obtained...Continue Reading

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Citations

Jul 9, 2013·Bioscience, Biotechnology, and Biochemistry·Md Mominul Islam SheikhJae Won Kim
Aug 10, 2010·Waste Management·Azam JeihanipourMohammad J Taherzadeh
Oct 7, 2009·Biotechnology and Bioengineering·Azam JeihanipourMohammad J Taherzadeh
Apr 9, 2013·Bioresource Technology·I A PanagiotopoulosE G Koukios
Jan 19, 2011·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Kanokphorn Sangkharak
Apr 23, 2013·Biotechnology and Applied Biochemistry·Md Mominul Islam SheikhJae Won Kim
Aug 28, 2016·Journal of Industrial Microbiology & Biotechnology·Meltem Yesilcimen Akbas, Benjamin C Stark
Nov 2, 2017·Frontiers in Microbiology·Andrea F S CostaLeonie A Sarubbo
Aug 18, 2017·Topics in Current Chemistry·Nattha PensupaCarol Sze Ki Lin
Aug 9, 2020·Journal of Hazardous Materials·Chong LiCarol Sze Ki Lin
May 1, 2021·Materials·Michal J BinczarskiIzabela A Witonska

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