Attapulgite composite material and preparation method thereof

By sintering the concave and convex rod soil, hydroxyapatite and biomass-derived carbonaceous intermediate phase into a composite material, the problem of insufficient effective surface area of ​​concave and convex rod soil is solved, and the heavy metal removal efficiency and the mechanical properties of the material are significantly improved.

CN119701873APending Publication Date: 2025-03-28SHANGHAI JIAOTONG UNIV +1
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Patent Information

Application Number
CN202411992895.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

The existing concave and convex rod soil has insufficient effective surface area in wastewater treatment, resulting in low efficiency in removing heavy metals and organic pollutants.

Method used

The ethanol solution of concave and convex rod soil, hydroxyapatite and biomass-derived carbonaceous mesophalange are mixed and sintered to prepare a concave and convex rod soil-hydroxyapatite-activated carbon ternary composite material to increase the effective specific surface area of ​​concave and convex rods.

Benefits of technology

By increasing the effective specific surface area and pore structure of the concave and convex rod soil, the removal efficiency of heavy metal ions is significantly improved, and the mechanical strength and toughness of the material are improved, and the service life is extended.

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Abstract

The invention discloses an attapulgite composite material and a preparation method thereof. The preparation method comprises the following steps: S1, mixing attapulgite, hydroxyapatite and an ethanol solution of a biomass-derived carbonaceous intermediate phase to form a gel system; s2, the gel system is subjected to granulation or compression molding treatment, and a composite molding material is obtained; s3, the composite molding material is subjected to sintering treatment, and the attapulgite composite material is obtained. Attapulgite, hydroxyapatite and an ethanol solution of a biomass-derived carbonaceous intermediate phase are adopted as raw materials, and an attapulgite modified material, namely the attapulgite-hydroxyapatite-activated carbon ternary composite material, is obtained through granulation or compression molding and sintering treatment. The attapulgite-hydroxyapatite composite material can be applied to the fields of heavy metal wastewater treatment, organic pollutant removal, soil remediation, precious metal recovery and the like by exerting the synergistic effect of attapulgite and hydroxyapatite.
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