Biodegradation of Typical Plastics: From Microbial Diversity to Metabolic Mechanisms

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(1), P. 593 - 593

Published: Jan. 2, 2024

Plastic production has increased dramatically, leading to accumulated plastic waste in the ocean. Marine plastics can be broken down into microplastics (<5 mm) by sunlight, machinery, and pressure. The accumulation of organisms release additives adversely affect health marine organisms. Biodegradation is one way address pollution an environmentally friendly manner. microorganisms more adapted fluctuating environmental conditions such as salinity, temperature, pH, pressure compared with terrestrial microorganisms, providing new opportunities pollution. Pseudomonadota (Proteobacteria), Bacteroidota (Bacteroidetes), Bacillota (Firmicutes), Cyanobacteria were frequently found on biofilms may degrade plastics. Currently, diverse plastic-degrading bacteria are being isolated from environments offshore deep oceanic waters, especially Pseudomonas spp. Bacillus Alcanivoras Actinomycetes. Some fungi algae have also been revealed degraders. In this review, we focused advances biodegradation their enzymes (esterase, cutinase, laccase, etc.) involved process polyethylene terephthalate (PET), polystyrene (PS), (PE), polyvinyl chloride (PVC), polypropylene (PP) highlighted need study sea.

Language: Английский

---

Advancing Plastic Recycling: Challenges and Opportunities in the Integration of 3D Printing and Distributed Recycling for a Circular Economy

Polymers, Journal Year: 2023, Volume and Issue: 15(19), P. 3881 - 3881

Published: Sept. 25, 2023

The concept of the circular economy has emerged as a promising solution to address mounting concerns surrounding plastic waste and urgent need for sustainable resource management. While conventional centralized recycling remains common practice waste, facilities may prove inadequate in handling ever-increasing volumes generated globally. Consequently, exploring alternative methods, such distributed by additive manufacturing, becomes paramount. This innovative approach encompasses actively involving communities practices promotes economy. comprehensive review paper aims explore critical aspects necessary realize potential manufacturing. In this paper, our focus lies on proposing schemes that leverage existing literature harness manufacturing an effective We intricacies process, optimize 3D printing parameters, challenges, evaluate mechanical properties recycled materials. Our investigation draws heavily from last five years, we conduct thorough assessment DRAM implementation its influence structures. Through analysis, reveal materials delivering functional components, with insights into their performance, strengths, weaknesses. serves guide those interested embracing transformative recycling. By fostering community engagement, optimizing processes, incorporating suitable additives, it is possible collectively contribute more future while combatting crisis. As progress made, essential further delve complexities material behavior, techniques, long-term durability printed components. addressing these challenges head-on, feasible refine advance viable pathway minimize cultivating cleaner planet generations come.

Language: Английский

---

An overview on the recycling of waste poly(vinyl chloride)

Green Chemistry, Journal Year: 2023, Volume and Issue: 25(18), P. 6971 - 7025

Published: Jan. 1, 2023

The environmental threat of waste polyvinyl chloride (PVC) is growing. But the unique chemical structure PVC makes its recycling itself have ability to cause harm. More advanced processes are required.

Language: Английский

---

Chemical recycling of Polyethylene terephthalate: A mini-review

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112507 - 112507

Published: March 15, 2024

Plastic waste management, particularly addressing the challenges of Polyethylene terephthalate (PET) waste, has become increasingly urgent in face escalating environmental concerns. This paper critically examines glycolysis-based PET recycling, focusing on its potential as a promising solution. Despite lightweight properties and cost-effectiveness advantages, poses multifaceted challenges, including contaminant removal, scale-up hurdles, economic viability. Catalyst optimization maintaining end-product quality are crucial for enhancing recycling efficiency market acceptance. Moreover, this review underscores importance impact assessments regulatory compliance guiding sustainable management practices. To overcome infrastructure limitations foster global collaboration, concerted efforts needed to educate consumers facilitate international cooperation. By these holds promise mitigating plastic pollution promoting circular economy. The highlights recent advancements applications resultant product, Bis HydroxyEthl Terephthalate (BHET).

Language: Английский

---

Retrieving back plastic wastes for conversion to value added petrochemicals: opportunities, challenges and outlooks

Applied Energy, Journal Year: 2023, Volume and Issue: 345, P. 121307 - 121307

Published: June 1, 2023

Plastic production and its unplanned management disposal, has been shown to pollute terrestrial, aquatic, atmospheric environments. Petroleum-derived plastics do not decompose tend persist in the surrounding environment for longer time. Plastics can be ingested accumulate into tissues of both terrestrial aquatic animals, which impede their growth development. Petrochemicals are primary feedstocks manufacture plastics. The plastic wastes retrieved back conversion value added petrochemicals including aromatic char, hydrogen, synthesis gas, bio-crude oil using various technologies thermochemical, catalytic chemolysis. This review focusses on technologies, opportunities, challenges outlooks retrieving petrochemicals. also explores technical approaches regard commercial feasibility, economic environmental sustainability. Further, this work provides a detailed discussion opportunities associated with recent thermochemical adopted waste fuels chemicals. recommends prospects future research improve processes cost-efficiency promising It is envisioned that would overcomes knowledge gaps further contribute emerging sustainable exploiting value-added products.

Language: Английский

---