Plastic wastes biodegradation: Mechanisms, challenges and future prospects.

Area of Science:

• Environmental Science
• Microbiology
• Biotechnology

Background:

• Plastic waste accumulation poses a significant global environmental threat.
• Current understanding of synthetic plastic biodegradation mechanisms and effectiveness is limited.
• Urgent need for eco-friendly techniques to mitigate plastic waste impacts.

Purpose of the Study:

• To comprehensively review the role of microbes, particularly algae, in synthetic plastic biodegradation.
• To highlight the capacity of insect gut microbial consortia for degrading plastic waste.
• To discuss biodegradation pathways for six types of synthetic plastics.

Main Methods:

• Literature review focusing on microbial degradation of synthetic plastics.
• Emphasis on algal and insect gut microbial roles.
• Analysis of plastic depolarization mechanisms.

Main Results:

• Algae and insect gut microbes demonstrate potential in degrading various synthetic plastics.
• Schematic pathways for the biodegradation of six plastic types are discussed.
• Findings support the potential for bio-upcycling of plastic waste.

Conclusions:

• Microbial biodegradation offers a promising eco-environmental solution for plastic waste.
• Further research can establish bio-upcycling processes for valuable metabolite biosynthesis.
• Challenges and opportunities exist for microbial valorization of degraded plastics.