Title:
PREPARATION METHOD FOR LANTHANUM-LOADED NITROGEN-DOPED POROUS CARBON-PHOSPHORUS ADSORPTION MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/236312
Kind Code:
A1
Abstract:
A preparation method for a lanthanum-loaded nitrogen-doped porous carbon-phosphorus adsorption material, relating to the technical field of sewage treatment. The present invention aims to solve the problems that the existing lanthanum-loaded phosphorus adsorption material is high in preparation cost, complex in method, low in adsorption efficiency, uneven in lanthanum loading and easy to generate secondary pollution. According to the lanthanum-loaded nitrogen-doped porous carbon-phosphorus adsorption material prepared by the present invention, polyethyleneimine (PEI) is used as a surface modifier, chitosan is used as a carbon source, and a two-step sol-gel method is used to prepare a porous carbon material uniformly loaded with nano hydrated lanthanum oxide. The preparation method for the lanthanum-loaded nitrogen-doped porous carbon-phosphorus adsorption material provided by the present invention is simple to operate, low in cost and environment-friendly; basic lanthanum carbonate in the prepared lanthanum-loaded nitrogen-doped porous carbon-phosphorus adsorption material is uniform in load distribution and firm in bonding, thereby ensuring that lanthanum ions are not prone to dissolution, ensuring the stability of the material, and widening the application range of the material; in addition, the material further has a large specific surface area and more adsorption sites, such that the phosphorus adsorption efficiency is higher.
Inventors:
WU RUI (CN)
WANG PU (CN)
CHEN JUNJIE (CN)
XU HUA (CN)
WANG QI (CN)
TIAN YU (CN)
WANG PU (CN)
CHEN JUNJIE (CN)
XU HUA (CN)
WANG QI (CN)
TIAN YU (CN)
Application Number:
PCT/CN2022/105869
Publication Date:
December 14, 2023
Filing Date:
July 15, 2022
Export Citation:
Assignee:
GUANGDONG WATER INVEST CO LTD (CN)
HARBIN INST TECHNOLOGY (CN)
NATIONAL ENGINEERING RES CENTER OF URBAN WATER RESOURCE (CN)
HARBIN INST TECHNOLOGY (CN)
NATIONAL ENGINEERING RES CENTER OF URBAN WATER RESOURCE (CN)
International Classes:
B01J20/20; B01J20/30; C02F1/28
Foreign References:
| CN113750964A | 2021-12-07 | |||
| CN112934164A | 2021-06-11 | |||
| CN108686627A | 2018-10-23 | |||
| CN107134373A | 2017-09-05 | |||
| CN114524452A | 2022-05-24 | |||
| AU2020101504A4 | 2020-09-10 |
Attorney, Agent or Firm:
HARBIN HUAXIA SONGHUAJIANG INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
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