Preparation method and application of composite modified bentonite adsorbent material
By ammonifying bentonite and mixing it with modified alumina powder, a composite modified bentonite adsorbent material was prepared, which solved the problem of insufficient adsorption performance of natural bentonite in the treatment of complex polluted wastewater and achieved synergistic removal of heavy metals and organic pollutants.
CN121446452BActive Publication Date: 2026-05-26CHANGSHA ENVIRONMENTAL PROTECTION COLLEGE
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGSHA ENVIRONMENTAL PROTECTION COLLEGE
- Filing Date
- 2025-12-03
- Publication Date
- 2026-05-26
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Abstract
This invention discloses a method for preparing and applying a composite modified bentonite adsorbent material, belonging to the technical field of bentonite adsorbent materials. The method includes: amylating bentonite to obtain aminated bentonite; preparing modified alumina powder; mixing the aminated bentonite and modified alumina powder in a specific ratio, ball milling and drying, and then heat-treating to obtain the composite modified bentonite adsorbent material. The composite modified bentonite adsorbent material prepared by this invention possesses both the hydrophilic / complexing properties of amino groups and the hydrophobic / oleophilic properties of long alkyl chains, becoming an "amphiphilic" or "multifunctional" adsorbent. It can simultaneously produce synergistic adsorption of heavy metal ions and organic pollutants, improving the adsorption capacity of bentonite adsorbent materials for organic pollutants in wastewater and greatly expanding the application range of bentonite adsorbent materials.
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Citation Information
Patent Citations
Alumina based clay adsorbent for the refining of superior kerosene oil and aviation turbine fuel
IN201721032250A