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Optimization of organic solid waste composting process through iron-related additives: A systematic review
Chaonan Pan1, Hongyu Yang2, Wenfang Gao2
1Tianjin Key Laboratory of Animal and Plant Resistance, College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China; College of Life Science, Northeast Agricultural University, Harbin, 150030, China.
Journal of Environmental Management
|January 3, 2024
Summary
Iron (Fe) additives enhance organic solid waste composting by improving biodegradation and humus formation. Further research is recommended for optimizing Fe-driven composting and promoting circular economy goals.
Area of Science:
- Environmental Science
- Soil Science
- Biotechnology
Background:
- Composting is a sustainable method for organic solid waste management.
- Iron (Fe) additives offer diverse forms (zero-valent iron, oxides, salts) and valence states, influencing composting.
- Academics show keen interest in Fe's role in driving composting processes.
Approach:
- This review systematically integrates recent literature on Fe-related additives in composting.
- It analyzes the influence and mechanisms of various Fe additives on composting outcomes.
- The review covers organic component conversion, humus formation, biological factors, and end-product quality.
Key Points:
- Fe additives significantly impact organic component conversion and humus formation during composting.
- Biological factors and microbial communities are modulated by Fe addition.
- Compost end-product stability and safety are enhanced by specific Fe additives.
Conclusions:
- Fe-related additives offer a promising strategy for optimizing organic solid waste composting.
- Further research into deep action mechanisms, biochemical pathways, and budget analysis is crucial.
- Targeted application of Fe additives can reduce costs and advance circular economy objectives.
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