Semi-permeable membrane-covered high-temperature aerobic composting: A review

Area of Science:

• Environmental Science
• Microbiology
• Waste Management

Background:

• Organic solid waste requires safe and effective treatment methods.
• High-temperature aerobic composting is a promising technology for waste management and compost improvement.
• Semi-permeable membranes offer potential advancements in composting processes.

Purpose of the Study:

• To comprehensively summarize the impact of semi-permeable membranes, specifically expanded polytetrafluoroethylene (e-PTFE), on high-temperature aerobic composting.
• To review the effects of SMHC on compost quality, nutrient cycling, emissions, microbial communities, and antibiotic resistance.
• To provide recommendations for future research in SMHC.

Main Methods:

• Literature review and synthesis of existing research on semi-permeable membrane-covered high-temperature aerobic composting (SMHC).
• Analysis of studies focusing on e-PTFE membranes in composting applications.
• Compilation of data on physicochemical properties, carbon and nitrogen transformations, greenhouse gas emissions, microbial succession, and antibiotic resistance genes.

Main Results:

• Semi-permeable membranes create a micro-positive pressure, improving air distribution and reducing anaerobic conditions.
• SMHC accelerates organic matter decomposition, leading to faster composting and enhanced compost quality.
• The technology influences microbial community succession and impacts the removal of antibiotics and antibiotic resistance genes.

Conclusions:

• Semi-permeable membrane technology is a viable approach for optimizing high-temperature aerobic composting.
• SMHC offers significant benefits for waste treatment, compost quality, and environmental protection.
• Further research is recommended to fully explore and implement SMHC in waste management strategies.