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US 2020/0139341 A1Published application
Magnetic Adsorbent for Removing Arsenic and Antimony by means of Adsorption-Superconducting Magnetic Separation and Preparation Method therefor
AssigneeResearch Center for Eco-Environmental Sciences, Chinese Academy of Sciences
InventorsRuiping LIU, Zenglu QI, Lijun ZHU, Huijuan LIU, Huachun LAN, Jiuhui QU
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Abstract
A magnetic adsorbent, preparation method therefor and application thereof. The magnetic adsorbent is made by loading a weakly material with high adsorption capacity, an iron-based gel, onto a strongly magnetic ferrite material with low adsorption capacity by means of in-situ reaction. The magnetic adsorbent is used for removing heavy metal pollutants and phosphate pollutants from water.
Claims5
A method for preparing a magnetic adsorbent used for superconducting magnetic separation, comprising the following steps:
- preparing an iron-based gel by a ferric salt solution and an alkali solution, wherein, dropping the alkali solution slowly into the ferric salt solution and balancing the pH value between 4 to 7.5 under conditions of sufficient stirring, then continuing stirring for 5 to 30 min and standing for 60 min to 24 h to obtain the iron-based gel;
- loading the obtained iron-based gel on a surface of ferrite by reaction in situ.
Dependencies are inferred from the claim text.