公开(公告)号：US12201961B1

公开(公告)日：2025-01-21

申请号：US18441579

申请日：2024-02-14

Applicant: Institute of Soil Science, CAS

Inventor： Xingxiang Wang ,  Yurong Wang ,  Changfeng Ding ,  Liqin He ,  Ziyao Li

IPC: B01J20/22 ,  B01J20/04 ,  B01J20/30 ,  B09C1/08 ,  C09K17/08

Abstract: Disclosed are a targeted and long-lasting passivation material for soil cadmium immobilization, and a preparation method and use thereof. In the disclosure, the passivation material is a mercaptosuccinic acid-intercalated calcium iron aluminum hydrotalcite, which is prepared by hydrothermal co-precipitation of a metal salt dispersion and an intercalation solution in an alkaline environment.

公开(公告)号：US20250161907A1

公开(公告)日：2025-05-22

申请号：US18609383

申请日：2024-03-19

Applicant: Institute of Soil Science, CAS

Inventor： Xingxiang Wang ,  Yurong Wang ,  Changfeng Ding ,  Ziyao Li ,  Liqin He

IPC: B01J20/22 ,  B01J20/12 ,  B01J20/24 ,  B01J20/28 ,  B01J20/30 ,  B09C1/08

Abstract: Disclosed are a floatable three-dimensional (3D) hollow microsphere material, and its preparation method and use in soil cadmium reduction, belonging to the field of regeneration of contaminated soil. The preparation method includes: mixing polyvinyl alcohol, sodium alginate, ethylenediaminetetraacetic acid, saponin, and at least one of modified rectorite and unmodified rectorite, to obtain a mixed material, wherein the modified rectorite includes at least one of formamide-modified rectorite and sodium humate-modified rectorite; and mixing the mixed material with a cross-linking agent solution, and performing cross-linking on a resulting mixture to obtain the floatable 3D hollow microsphere material. The floatable 3D hollow microsphere material is applied to moist soil to adsorb and remove heavy metal elements.