一种用于农田土壤重金属钝化的有机-无机复合修复材料及其制备方法
By preparing calcium hydroxyphosphate-loaded LDH powder and forming gel microspheres, the stability and dust problems of existing soil heavy metal passivation materials were solved, achieving efficient and safe soil heavy metal passivation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SINO-SINGAPORE RUIMEI (TIANJIN) ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing soil heavy metal passivation materials are insufficient in terms of long-term stability and mechanical strength, making it difficult to effectively fix heavy metals. Furthermore, powdered materials are prone to causing dust when used in farmland.
Layered bimetallic hydroxide (LDH) was used as a carrier to load hydroxyapatite via co-precipitation reaction, and sodium alginate was modified with citric acid to form gel microspheres. Combined with calcium-aluminum crosslinking, an organic-inorganic composite repair material was prepared to improve the stability and mechanical strength of the material.
It achieves efficient and long-lasting fixation of heavy metals, reduces dust emissions, improves ease of use and safety, and provides a more durable soil remediation effect.
Smart Images
Figure CN122146309B_ABST