Title:
BIOSYNTHESIS METHOD FOR EXOGENOUS SEED CRYSTAL-ADDED MEDIATED SCHWERTMANNITE, AS WELL AS PRODUCT AND APPLICATION OF SCHWERTMANNITE
Document Type and Number:
WIPO Patent Application WO/2023/207005
Kind Code:
A1
Abstract:
Disclosed in the present invention are a biosynthesis method for exogenous seed crystal-added mediated Schwertmannite, as well as a product and an application of Schwertmannite. The method of the present invention comprises: adding a β-FeOOH nano seed crystal solution into a ferrous sulfate solution, and then adding an A. ferrooxidans resting cell suspension to obtain a mixed solution; culturing the mixed solution at 25-30°C for 42-72 h; and after culturing is ended, washing mineral precipitates, freeze-drying, and sieving to obtain exogenous seed crystal-added mediated and synthesized Schwertmannite. According to the present invention, the Schwertmannite prepared by adding an exogenous seed crystal is higher in yield, is shorter in synthesis period, and has a treatment effect on As(V) and Cr(VI) in a water body superior to Schwertmannite without using a seed crystal. In addition, the present invention has the advantages of simple, quick and efficient preparation, low cost and no secondary pollution to the environment, and can be applied to the treatment of acid mine drainage.
Inventors:
DANG ZHI (CN)
JIANG FENG (CN)
YI XIAOYUN (CN)
XUE CHAO (CN)
YANG YUEBEI (CN)
WANG HENG (CN)
ZENG LIJUAN (CN)
JIANG FENG (CN)
YI XIAOYUN (CN)
XUE CHAO (CN)
YANG YUEBEI (CN)
WANG HENG (CN)
ZENG LIJUAN (CN)
Application Number:
PCT/CN2022/128476
Publication Date:
November 02, 2023
Filing Date:
October 31, 2022
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
B01J20/02; B01J20/30; C02F1/28; C02F101/20; C02F101/22
Domestic Patent References:
| WO2021048827A1 | 2021-03-18 |
Foreign References:
| CN114713181A | 2022-07-08 | |||
| CN109928510A | 2019-06-25 | |||
| CN105601051A | 2016-05-25 | |||
| CN106867921A | 2017-06-20 | |||
| RU2767952C1 | 2022-03-22 |
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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