Synergistic chemo-enzymatic hydrolysis of poly(ethylene terephthalate) from textile waste.
Synergistic chemo-enzymatic hydrolysis of poly(ethylene terephthalate) from textile waste.
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DOI：
10.1111/1751-7915.12734
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发表时间：
2017-11
影响因子：
5.7
通讯作者：
Guebitz GM
中科院分区：
文献类型：
--
作者：
Quartinello F;Vajnhandl S;Volmajer Valh J;Farmer TJ;Vončina B;Lobnik A;Herrero Acero E;Pellis A;Guebitz GM
由于全球环保意识不断增强，需要符合循环经济原则的回收策略。聚酯是纺织工业中最常用的材料之一；因此，以环保的方式实现聚对苯二甲酸乙二醇酯（PET）的完全水解是当前的挑战。在这项工作中，开发了一种化学酶处理方法来回收 PET 结构单元，即对苯二甲酸 (TA) 和乙二醇。为了监测固体样品中的单体和低聚物含量，成功开发了傅里叶变换拉曼方法。观察到 TA 的游离羧基 (1632 cm−1) 转变为去质子化状态 (1604 和 1398 cm−1)，并使用 1728 和 1398 cm−1 处的谱带评估化学酶 PET 水解后 TA 的纯度。在中性条件（T = 250 °C，P = 40 bar）下进行的化学处理使 PET 转化为 85% 的 TA 和小分子低聚物。后者在第二步中使用特异腐质霉角质酶 (HiC) 进行水解，产生 97% 的纯 TA，因此与商业合成级 TA (98%) 相当。
Due to the rising global environment protection awareness, recycling strategies that comply with the circular economy principles are needed. Polyesters are among the most used materials in the textile industry; therefore, achieving a complete poly(ethylene terephthalate) (PET) hydrolysis in an environmentally friendly way is a current challenge. In this work, a chemo‐enzymatic treatment was developed to recover the PET building blocks, namely terephthalic acid (TA) and ethylene glycol. To monitor the monomer and oligomer content in solid samples, a Fourier‐transformed Raman method was successfully developed. A shift of the free carboxylic groups (1632 cm−1) of TA into the deprotonated state (1604 and 1398 cm−1) was observed and bands at 1728 and 1398 cm−1 were used to assess purity of TA after the chemo‐enzymatic PET hydrolysis. The chemical treatment, performed under neutral conditions (T = 250 °C, P = 40 bar), led to conversion of PET into 85% TA and small oligomers. The latter were hydrolysed in a second step using the Humicola insolens cutinase (HiC) yielding 97% pure TA, therefore comparable with the commercial synthesis‐grade TA (98%).
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影响因子：
4.4
作者：
Gamerith, Caroline;Zartl, Barbara;Guebitz, Georg M.
通讯作者：
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5.5
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