Boondaeng Antika, Keabpimai Jureeporn, Srichola Preeyanuch, Vaithanomsat Pilanee, Trakunjae Chanaporn, Niyomvong Nanthavut
Kasetsart Agricultural and Agro-Industrial Product Improvement Institute, Kasetsart University, Bangkok 10900, Thailand.
Department of Biology and Biotechnology, Faculty of Science and Technology, Nakhon Sawan Rajabhat University, Nakhon Sawan 60000, Thailand.
Polymers (Basel). 2023 Apr 21;15(8):1964. doi: 10.3390/polym15081964.
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 °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.
纺织废料通常最终被填埋，造成环境污染。在本研究中，将包括高压灭菌、冷冻碱/尿素浸泡和碱性预处理在内的纺织废料回收预处理方法应用于具有不同棉/聚酯混合比例的纺织废料。酶水解的最佳条件是棉/聚对苯二甲酸乙二酯（PET）比例为60/40的纺织废料混合物，采用可重复使用的化学预处理（15%氢氧化钠），在121℃下处理15分钟。基于中心复合设计（CCD），使用响应面法（RSM）对纤维素酶预处理纺织废料的水解进行了优化。优化条件为酶负载量30 FPU/g和底物负载量7%，孵育96小时后，水解产率的最大观测值为89.7%，对应预测值为87.8%。本研究结果为纺织废料回收提供了一个乐观的解决方案。
