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Changes in Cd forms and Cd resistance genes in municipal sludge during coupled earthworm and biochar composting.
Ecotoxicol Environ Saf
November 2024
Institute of Natural Resources and Ecology Heilongjiang Academy of Sciences, National and Provincial Joint Engineering Laboratory of Wetlands and Ecological Conservation, Collaborative Innovation Center for Development and Utilization of Forest Resource, Harbin 150040, PR China. Electronic address:
Article Synopsis
- There is a connection between microbial activity and the availability of heavy metals, with heavy metal resistance genes influencing metal behavior.
- A study evaluated the effects of combining earthworms and biochar composting to understand changes in cadmium (Cd) forms and resistance genes in sludge, using specific extraction and gene chip technologies.
- Results showed that this combined treatment enhanced earthworm growth, improved sludge degradation, and transformed Cd from more reactive forms to inert forms while decreasing the number of Cd resistance genes present.