Techno-economic, life-cycle, and socioeconomic impact analysis of enzymatic recycling of poly(ethylene terephthalate)

被引:250
作者
Singh, Avantika [1 ,2 ]
Rorrer, Nicholas A. [1 ,3 ]
Nicholson, Scott R. [1 ,4 ]
Erickson, Erika [1 ,3 ]
DesVeaux, Jason S. [1 ,2 ]
Avelino, Andre F. T. [4 ]
Lamers, Patrick [4 ]
Bhatt, Arpit [4 ]
Zhang, Yimin [4 ]
Avery, Greg [4 ]
Tao, Ling [2 ]
Pickford, Andrew R. [1 ,5 ]
Carpenter, Alberta C. [1 ,4 ]
McGeehan, John E. [1 ,5 ]
Beckham, Gregg T. [1 ,3 ]
机构
[1] BOTTLE Consortium, Golden, CO 80401 USA
[2] Natl Renewable Energy Lab, Catalyt Carbon Transformat & Scale Up Ctr, Golden, CO 80401 USA
[3] Natl Renewable Energy Lab, Renewable Resources & Enabling Sci Ctr, Golden, CO 80401 USA
[4] Natl Renewable Energy Lab, Strateg Energy Anal Ctr, Golden, CO 80401 USA
[5] Univ Portsmouth, Ctr Enzyme Innovat, Portsmouth PO1 2DY, Hants, England
关键词
GLYCOL-WATER MIXTURES; HIGH-LEVEL EXPRESSION; MONO ETHYLENE-GLYCOL; PERVAPORATION SEPARATION; COMPOSITE MEMBRANES; ETHANOL-PRODUCTION; ACIDIC CUTINASE; REVERSE-OSMOSIS; BRANCH COMPOST; RECOVERY;
D O I
10.1016/j.joule.2021.06.015
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Esterases have emerged as important biocatalysts for enzyme-based polyester recycling of poly(ethylene terephthalate) (PET) to terephthalic acid (TPA) and ethylene glycol (EG). Here, we present process modeling, techno-economic, life-cycle, and socioeconomic impact analyses for an enzymatic PET depolymerization-based recycling process, which we compare with virgin TPAmanufacturing. We predict that enzymatically recycled TPA (rTPA) can be cost-competitive and highlight key areas to achieve this. In addition to favorable long-term socioeconomic benefits, rTPA can reduce total supply chain energy use by 69%-83% and greenhouse gas emissions by 17%-43% per kg of TPA. An economy-wide assessment for the US estimates that the TPA recycling process can reduce environmental impacts by up to 95% while generating up to 45% more socioe-conomic benefits, also relative to virgin TPA production. Sensitivity analyses highlight impactful research opportunities to pursue toward realizing biological PET recycling and upcycling.
引用
收藏
页码:2479 / 2503
页数:25
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