Converting textile waste into value-added chemicals:An integrated bio-refinery process  

作　　者：Eun Jin Cho Yoon Gyo Lee Younho Song Ha Yeon Kim Dinh-Truong Nguyen Hyeun-Jong Bae 

机构地区：[1]Bio-Energy Research Center,Chonnam National University,Gwangju,500-757,Republic of Korea [2]Department of Bioenergy Science and Technology,Chonnam National University,Gwangju,500-757,Republic of Korea [3]School of Biotechnology,Tan Tao University,Long An,82000,Viet Nam

出　　处：《Environmental Science and Ecotechnology》2023年第3期66-76,共11页环境科学与生态技术（英文）

基　　金：supported by Basic Science Research Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Education NRF-2022R1A2C10028591140982119420101 and 2020R1I1A 1A01061751);supported by the IBCT project(2021-0083)funded by the Tan Tao Group(TTG),Vietnam.

摘　　要：The rate of textile waste generation worldwide has increased dramatically due to a rise in clothing consumption and production.Here,conversion of cotton-based,colored cotton-based,and blended cotton-polyethylene terephthalate(PET)textile waste materials into value-added chemicals(bioethanol,sorbitol,lactic acid,terephthalic acid(TPA),and ethylene glycol(EG))via enzymatic hydrolysis and fermentation was investigated.In order to enhance the efficiency of enzymatic saccharification,effective pretreatment methods for each type of textile waste were developed,respectively.A high glucose yield of 99.1%was obtained from white cotton-based textile waste after NaOH pretreatment.Furthermore,the digestibility of the cellulose in colored cotton-based textile wastes was increased 1.38e1.75 times because of the removal of dye materials by HPAC-NaOH pretreatment.The blended cottonPET samples showed good hydrolysis efficiency following PET removal via NaOHeethanol pretreatment,with a glucose yield of 92.49%.The sugar content produced via enzymatic hydrolysis was then converted into key platform chemicals(bioethanol,sorbitol,and lactic acid)via fermentation or hydrogenation.The maximum ethanol yield was achieved with the white T-shirt sample(537 mL/kg substrate),which was 3.2,2.1,and 2.6 times higher than those obtained with rice straw,pine wood,and oak wood,respectively.Glucose was selectively converted into sorbitol and LA at a yield of 70%and 83.67%,respectively.TPA and EG were produced from blended cottonPET via NaOHeethanol pretreatment.The integrated biorefinery process proposed here demonstrates significant potential for valorization of textile waste.

关 键 词：Textile waste Value-added biochemicals Integrated biorefinery BIOETHANOL Lactic acid 

分 类 号：X799.3[环境科学与工程—环境工程]