公开(公告)号：US11473013B1

公开(公告)日：2022-10-18

申请号：US17732539

申请日：2022-04-29

Applicant: South China Normal University

Inventor： Tao Chen ,  Bo Yan ,  Jian Huang

IPC: C09K17/46 ,  B01J20/22 ,  B01J20/10 ,  B01J20/06 ,  B09C1/08 ,  B01J20/32 ,  B01J20/28

Abstract: A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe3O4 and γ-Fe2O3; said modifier comprises ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid trisodium salt (NTA), (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.

公开(公告)号：US20220356399A1

公开(公告)日：2022-11-10

申请号：US17732539

申请日：2022-04-29

Applicant: South China Normal University

Inventor： Tao Chen ,  Bo Yan ,  Jian Huang

IPC: C09K17/46 ,  B01J20/22 ,  B01J20/10 ,  B01J20/06 ,  B01J20/28 ,  B01J20/32 ,  B09C1/08

Abstract: A magnetic soil remediation agent for soil heavy metal pollution and a preparation method and application thereof are provided. The magnetic soil remediation agent is prepared by using remediation agent framework material and magnetic core material as raw materials, and heavy metal collector as modifier; said framework material is silicon dioxide activated by strong alkali; said magnetic core material comprises magnetic materials Fe3O4 and γ-Fe2O3; said modifier comprises ethylenediaminetetraacetic acid (EDTA, nitrilotriacetic acid trisodium salt (NTA, (S,S)-ethylenediamine-N,N-disuccinic acid trisodium salt (EDDS) and mercaptoethylamine. The remediation agent of the present invention can effectively passivate the heavy metals in the soil, reduce their available contents, and inhibit the absorption of heavy metals by plants.