Solid-State Enzymatic Hydrolysis of Mixed PET/Cotton Textiles

被引：39

作者：

Kaabel, Sandra ^{[1
,2
]}

Arciszewski, Jane ^{[1
]}

Borchers, Tristan H. ^{[1
]}

Therien, J. P. Daniel ^{[1
]}

Friscic, Tomislav ^{[1
]}

Auclair, Karine ^{[1
]}

机构：

[1] McGill Univ, Dept Chem, 801 St West, Montreal, PQ H3A 0B8, Canada

[2] Aalto Univ, Dept Bioprod & Biosyst, Espoo 02150, Finland

来源：

CHEMSUSCHEM | 2022年 / 16卷 / 01期

基金：

加拿大自然科学与工程研究理事会; 欧盟地平线“2020”;

关键词：

biocatalysis; cotton; mechanoenzymatic hydrolysis; PET; textiles; POLYESTER; WASTE; DEPOLYMERIZATION; MECHANISM; RECOVERY; WATER;

D O I：

10.1002/cssc.202201613

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Waste polyester textiles are not recycled due to separation challenges and partial structural degradation during use and recycling. Chemical recycling of polyethylene terephthalate (PET) textiles through depolymerization can provide a feedstock of recycled monomers to make "as-new" polymers. While enzymatic PET recycling is a more selective and more sustainable approach, methods in development, however, have thus far been limited to clean, high-quality PET feedstocks, and require an energy-intensive melt-amorphization step ahead of enzymatic treatment. Here, high-crystallinity PET in mixed PET/cotton textiles could be directly and selectively depolymerized to terephthalic acid (TPA) by using a commercial cutinase from Humicola insolens under moist-solid reaction conditions, affording up to 30 +/- 2 % yield of TPA. The process was readily combined with cotton depolymerization through simultaneous or sequential application of the cellulase enzymes CTec2 (R), providing up to 83 +/- 4 % yield of glucose without any negative influence on the TPA yield.

引用

页数：9

共 61 条

[61] Selective enzymatic esterification of lignin model compounds in the ball mill [J].

Weissbach, Ulla ;

Dabral, Saumya ;

Konnert, Laure ;

Bolm, Carsten ;

Hernandez, Jose G. .

BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY, 2017, 13 :1788-1795

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