A time sequence control type composite pollution remediation material for facility agriculture soil and a preparation method and application thereof

By using a three-layer core-shell structured particulate remediation material and leveraging the time-series control triggered by tillage, irrigation, and rhizosphere microbial enzymes, the synergistic chain of micro/nanoplastics, heavy metals, and pesticide organic pollutants in facility agriculture soils is precisely broken, achieving highly efficient remediation results.

CN122256011APending Publication Date: 2026-06-23LINYI UNIVERSITY +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LINYI UNIVERSITY
Filing Date
2026-03-31
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing technologies cannot effectively address the ternary complex pollution of micro/nanoplastics (MNPs), heavy metals, and pesticide organic pollutants in facility agriculture soils, especially in terms of precisely cutting off their synergistic effects.

Method used

The material employs a three-layer core-shell structure for particulate remediation. The core layer contains biodegradable polyester encapsulating pesticide-degrading enzymes and pesticide adsorbents. The middle layer contains moisture/ion-responsive hydrogel encapsulating heavy metal fixatives and oxidative degradation catalysts. The outer shell contains brittle biodegradable polymer encapsulating micro/nanoplastics surface capping agents. The functional components are released in a time-controlled manner through tillage, irrigation, and rhizosphere microbial enzyme triggering.

Benefits of technology

It achieved a reduction rate of 75-85% in the abundance of micro/nanoplastics, a reduction rate of 80-90% in available Cd, and a degradation rate of 85-95% in malathion. The remediation efficiency is significantly better than that of existing technologies, and the release timing is matched with agricultural operations and soil biological processes.

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Abstract

The application discloses a time sequence control type composite pollution repair material for facility agriculture soil and a preparation method and application thereof, and belongs to the technical field of soil repair. The repair material is a three-layer core-shell structure particle, which comprises, from inside to outside, an inner core layer composed of biodegradable polyester wrapping pesticide degrading enzyme and pesticide adsorbent, a middle layer composed of water / ion responsive hydrogel wrapping heavy metal fixing agent and oxidative degradation catalyst, and an outer shell layer composed of brittle degradable polymer wrapping micro / nano plastic surface capping agent. The repair material realizes time sequence and synergistic repair of micro / nano plastic, available Cd and malathion by triggering the release of the outer shell layer through plowing mechanical force, triggering the slow release of the middle layer through irrigation water response, and triggering the release of the inner core layer through rhizosphere microbial enzyme. The material has simple preparation process, convenient application and good application prospect.
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