A biochar-loaded phosphate-solubilizing bacterial agent and its application in microplastic-cadmium composite pollution remediation
By loading Acinetobacter lysozyme P2 onto biochar, the problem of remediation of farmland contaminated by microplastics and cadmium was solved, achieving synergistic effects of cadmium passivation, soil phosphorus activation, and crop growth promotion, thus improving the remediation efficiency of farmland contaminated by microplastics and cadmium.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANYANG NORMAL UNIV
- Filing Date
- 2026-04-23
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies lack systematic remediation techniques for farmland with combined microplastic and heavy metal pollution. They cannot simultaneously alleviate the growth stress of combined pollution on crops, passivate available heavy metals in the soil, and repair the damaged phosphorus cycle function of the soil, making it difficult to meet the needs of safe utilization and ecological restoration of complex polluted farmland.
The method employed biochar-loaded Acinetobacter phosphate-solubilizing agent P2, using corn straw biochar to load Acinetobacter phosphate-solubilizing agent P2. This method utilized the adsorption and complexation effects of biochar to block the synergistic effect of microplastics and cadmium. Simultaneously, the strain's metabolic activities passivated and fixed cadmium, activated fixed phosphorus in the soil, and restored the soil's phosphorus turnover capacity.
It significantly reduces the bioavailability of cadmium in soils with multiple contamination, alleviates crop toxicity, promotes crop growth, enhances soil phosphorus cycling function, improves farmland ecological conditions, and achieves in-situ passivation remediation and fertility enhancement of farmland soil.
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Figure CN122405487A_ABST