An efficient and scalable melt fiber spinning system to improve enzyme-based PET recycling DOI Creative Commons
Matthew Colachis,

Nathan Clark,

Ashley M. Frank

et al.

Chemical Engineering Journal Advances, Journal Year: 2024, Volume and Issue: 19, P. 100624 - 100624

Published: Aug. 1, 2024

Chemical recycling technologies based on hydrolase enzymes that can depolymerize PET thermoplastic are emerging, yet these approaches require the polymer to be low crystallinity achieve high conversion. To prepare for enzymatic depolymerization, current processes rely melting and cryomilling at depressed temperatures reduce prevent annealing during micronization; however, large capital investment in costly equipment, not easily incorporated into intermediate-scale, distributed systems. Here, we describe a melt fiber spinning system achieves significant reduction real-world feedstocks without need any active cooling, scaled up or down as needed. Single-use water bottles drinking cups tested, where they extruded, drawn spooled thin fibers cool by passive heat dissipation rapidly enough quench (<10%). Additionally, estimate also increases feedstock surface-area-to-volume ratio 15-fold, which further benefits heterogenous enzyme biocatalysis. In small scale incubation tests, increased monomer released from 4-fold 10-fold compared shredded-only controls. Finally, show this >300 grams, with potential much larger scales, allows >95% depolymerization 20 liter bioreactor run.

Language: Английский

Biodegradable poly(butylene adipate-co-terephthalate) (PBAT) modified by 1,4 Cyclohexanedimethanol DOI
Jingru Wang, Mingyu Xu,

Juan Yan

et al.

Polymer, Journal Year: 2024, Volume and Issue: 308, P. 127348 - 127348

Published: June 29, 2024

Language: Английский

Citations

7
Opportunities and challenges for plastic depolymerization by biomimetic catalysis DOI Creative Commons

Yanfen Wu,

Qikun Hu,

Yizhen Che

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(17), P. 6200 - 6217

Published: Jan. 1, 2024

Plastic waste has imposed significant burdens on the environment. Chemical recycling allows for repeated regeneration of plastics without deterioration in quality, but often requires harsh reaction conditions, thus being environmentally unfriendly. Enzymatic catalysis offers a promising solution under mild it faces inherent limitations such as poor stability, high cost, and narrow substrate applicability. Biomimetic may provide new avenue by combining enzyme-like activity with stability inorganic materials. demonstrated great potential biomass conversion recently shown progress plastic degradation. This perspective discusses biomimetic degradation from two perspectives: imitation active centers substrate-binding clefts. Given chemical similarity between plastics, relevant work is also included discussion to draw inspiration. We conclude this highlighting challenges opportunities achieving sustainable via approach.

Language: Английский

Citations

6
Nondestructive Recovery of Cotton from Waste Polycotton Textiles by Catalytic Hydrolysis DOI

Yanfen Wu,

Yizhen Che,

Xuewei Wei

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(28), P. 10446 - 10454

Published: July 2, 2024

Language: Английский

Citations

6
Exploring the Pathways to Sustainability: A Comprehensive Review of Biodegradable Plastics in the Circular Economy DOI Creative Commons
Fazal Haq,

Mehwish Kiran,

Iffat Ayesha Khan

et al.

Materials Today Sustainability, Journal Year: 2024, Volume and Issue: unknown, P. 101067 - 101067

Published: Dec. 1, 2024

Language: Английский

Citations

4
Programming Aliphatic Polyester Degradation by Engineered Bacterial Spores DOI
Ziyu Cui,

Masamu Kawada,

Yue Hui

et al.

Biomacromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Enzymatic degradation of plastics is a sustainable approach to address the growing issue plastic accumulation. Here, we demonstrate aliphatic polyesters using enzyme-displaying bacterial spores and fabrication self-degradable spore-containing plastics. The proceeds without nutrient-dependent spore germination into living cells. Engineered completely degrade small molecules, retain activity through multiple cycles, regain full sporulation. We also found that interplay between glass transition temperature melting polyester substrates affects heterogeneous biocatalytic by engineered spores. Directly incorporating results in robust materials are degradable. Our study offers straightforward degradation.

Language: Английский

Citations

0
Recent advances in catalytic hydrogenolysis of polyester DOI

Wenge Bian,

Xiangchao Xu,

Peizhi Bai

et al.

Chinese Science Bulletin (Chinese Version), Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

Citations

0
Integrated design of multifunctional reinforced bioplastics (MReB) to synergistically enhance strength, degradability, and functionality DOI Creative Commons
Jinghao Li, Wei Liu, Alex H. Chang

et al.

Green Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Bioplastics have emerged as a tangible solution to the plastic waste crisis.

Language: Английский

Citations

0
In vivo and in vitro degradation and biological toxicity studies of polyesters with varying degradation rates DOI
Ze-Yang Zhang,

Wei-Zhen Zheng,

Zhi‐Chao Zhen

et al.

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 492, P. 138196 - 138196

Published: April 17, 2025

Language: Английский

Citations

0
Programming aliphatic polyester degradation by engineered bacterial spores DOI
Ziyu Cui,

Masamu Kawada,

Yue Hui

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: July 19, 2024

Enzymatic degradation of plastics is a sustainable approach to addressing the growing issue plastic accumulation. The primary challenges for using enzymes as catalysts are issues with their stability and recyclability, further exacerbated by costly production delicate structures. Here, we demonstrate an that leverages engineered spores display target in high density on surface catalyze aliphatic polyester create self-degradable materials. Engineered recombinant surface, eliminating need purification processes. intrinsic physical biological characteristics enable easy separation from reaction mixture, repeated reuse, renewal. displaying lipases completely degrade polyesters retain activity through four cycles, full recovered germination sporulation. Directly incorporating into results robust materials degradable. Our study offers straightforward biocatalytic degradation.

Language: Английский

Citations

1
An efficient and scalable melt fiber spinning system to improve enzyme-based PET recycling DOI Creative Commons
Matthew Colachis,

Nathan Clark,

Ashley M. Frank

et al.

Chemical Engineering Journal Advances, Journal Year: 2024, Volume and Issue: 19, P. 100624 - 100624

Published: Aug. 1, 2024

Chemical recycling technologies based on hydrolase enzymes that can depolymerize PET thermoplastic are emerging, yet these approaches require the polymer to be low crystallinity achieve high conversion. To prepare for enzymatic depolymerization, current processes rely melting and cryomilling at depressed temperatures reduce prevent annealing during micronization; however, large capital investment in costly equipment, not easily incorporated into intermediate-scale, distributed systems. Here, we describe a melt fiber spinning system achieves significant reduction real-world feedstocks without need any active cooling, scaled up or down as needed. Single-use water bottles drinking cups tested, where they extruded, drawn spooled thin fibers cool by passive heat dissipation rapidly enough quench (<10%). Additionally, estimate also increases feedstock surface-area-to-volume ratio 15-fold, which further benefits heterogenous enzyme biocatalysis. In small scale incubation tests, increased monomer released from 4-fold 10-fold compared shredded-only controls. Finally, show this >300 grams, with potential much larger scales, allows >95% depolymerization 20 liter bioreactor run.

Language: Английский

Citations

0