公开(公告)号：US20230219055A1

公开(公告)日：2023-07-13

申请号：US17728958

申请日：2022-04-25

Applicant: Central South University

Inventor： Qian Li ,  Rui Xu ,  Shengming Jin ,  Tao Jiang

IPC: B01J20/02 ,  C02F1/52 ,  C02F1/28 ,  B01J20/06 ,  B01J20/30 ,  B09C1/08

CPC classification number: B01J20/0292 ,  C02F1/5245 ,  C02F1/281 ,  B01J20/0229 ,  B01J20/0222 ,  B01J20/06 ,  B01J20/3085 ,  B01J20/3071 ,  B09C1/08 ,  C02F2101/22

Abstract: Disclosed are a functional material for synchronously stabilizing multiple metals and a preparation method thereof, and a method for rehabilitating soil or wastewater contaminated by heavy metals (metalloids). The preparation method includes: mixing a ferrous salt, a ferric salt, a manganous salt, water, a dispersing material, and a phosphate to obtain a first mixture, and subjecting the first mixture to a first precipitation reaction to obtain a first reaction mixture containing the phosphate; adjusting a pH value of the first reaction mixture containing the phosphate to 10-12 by adding an alkali thereto to obtain a second mixture, subjecting the second mixture to a second precipitation reaction to obtain a second reaction mixture; and subjecting the second reaction mixture to a solid-liquid separation to obtain a solid, washing the solid, and drying to obtain the functional material for synchronously stabilizing multiple metals.

公开(公告)号：US11975985B2

公开(公告)日：2024-05-07

申请号：US17728958

申请日：2022-04-25

Applicant: Central South University

Inventor： Qian Li ,  Rui Xu ,  Shengming Jin ,  Tao Jiang

IPC: C01G49/00 ,  B01J20/02 ,  B01J20/06 ,  B01J20/30 ,  B09C1/08 ,  C02F1/28 ,  C02F1/52 ,  C02F1/00 ,  C02F101/10 ,  C02F101/22

CPC classification number: C01G49/0072 ,  B01J20/0222 ,  B01J20/0229 ,  B01J20/0292 ,  B01J20/06 ,  B01J20/3071 ,  B01J20/3085 ,  B09C1/08 ,  C02F1/281 ,  C02F1/5245 ,  C02F2001/007 ,  C02F2101/103 ,  C02F2101/22 ,  C02F2209/06

Abstract: Disclosed are a functional material for synchronously stabilizing multiple metals and a preparation method thereof, and a method for rehabilitating soil or wastewater contaminated by heavy metals (metalloids). The preparation method includes: mixing a ferrous salt, a ferric salt, a manganous salt, water, a dispersing material, and a phosphate to obtain a first mixture, and subjecting the first mixture to a first precipitation reaction to obtain a first reaction mixture containing the phosphate; adjusting a pH value of the first reaction mixture containing the phosphate to 10-12 by adding an alkali thereto to obtain a second mixture, subjecting the second mixture to a second precipitation reaction to obtain a second reaction mixture; and subjecting the second reaction mixture to a solid-liquid separation to obtain a solid, washing the solid, and drying to obtain the functional material for synchronously stabilizing multiple metals.