Optimization of Textile Waste Blends of Cotton and PET by Enzymatic Hydrolysis with Reusable Chemical Pretreatment

被引:18
作者
Boondaeng, Antika [1 ]
Keabpimai, Jureeporn [1 ]
Srichola, Preeyanuch [1 ]
Vaithanomsat, Pilanee [1 ]
Trakunjae, Chanaporn [1 ]
Niyomvong, Nanthavut [2 ]
机构
[1] Kasetsart Univ, Kasetsart Agr & Agroind Prod Improvement Inst, Bangkok 10900, Thailand
[2] Nakhon Sawan Rajabhat Univ, Fac Sci & Technol, Dept Biol & Biotechnol, Nakhon Sawan 60000, Thailand
关键词
pretreatment; optimization; hydrolysis yield; textile waste; PET; cellulose; SOLID-STATE FERMENTATION; CELLULOSE; POLY(ETHYLENE-TEREPHTHALATE); NAOH/UREA; RECOVERY; ETHANOL; DEPOLYMERIZATION; DISSOLUTION; POLYESTER; GLUCOSE;
D O I
10.3390/polym15081964
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Textile waste usually ends up in landfills and causes environmental pollution. In this study, pretreatment methods for textile recycling, including autoclaving, freezing alkali/urea soaking, and alkaline pretreatment, were applied to textile waste with various cotton/polyester blending ratios. The best condition for enzymatic hydrolysis was a 60/40 textile waste blend of cotton/polyethylene terephthalate (PET) with a reusable chemical pretreatment (15% NaOH) at 121 degrees C for 15 min. The hydrolysis of pretreated textile waste by cellulase was optimized using response surface methodology (RSM) based on central composite design (CCD). The optimized conditions were 30 FPU/g of enzyme loading and 7% of substrate loading, which resulted in a maximum observed value of hydrolysis yield at 89.7%, corresponding to the predicted value of 87.8% after 96 h of incubation. The findings of this study suggest an optimistic solution for textile waste recycling.
引用
收藏
页数:12
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