Chinese Academy of Sciences

Research Center for Eco-Environmental Sciences

Jiuhui Qu

Huijuan Liu

Ruiping Liu

Huachun Lan

Lijun Zhu

Zenglu Qi

Huan Wang

Hongwei Zhang

Gong Zhang

Bao Liu

Meipeng Jian

Pengju Lei

Gaosheng Zhang

Fangfang Chang

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.

Magnetic adsorbent for removing arsenic and antimony by means of adsorption-superconducting magnetic separation and preparation method therefor

A manganese dioxide nanowire @ multidimensional mesoporous metal-organic framework adsorbent and application method thereof for removing heavy metals from water. A multidimensional mesoporous metal-organic framework material is prepared from metal ions and organic ligands by means of a self-assembly reaction; a manganese dioxide nanowire is prepared from manganese salt and thiosulfate by means of reaction in a reaction kettle. The adsorbent possesses not only the characteristics of a multidimensional mesoporous metal-organic framework material, such as reticulated pore adaptation, a large specific surface area, and abundant reaction sites, but also the oxidative and catalytic properties of manganese dioxide nanowire.

Manganese dioxide nanowire @ multidimensional mesoporous metal-organic framework adsorbent and preparation therefor

A method for preparing a hollow hydroxyl iron-manganese composite by employing a cubic structure template comprises: (1) preparation of a template: adding a certain mass of potassium permanganate to diluted hydrochloric acid, and dissolving and mixing evenly the same by magnetic stirring at room temperature; then adding polyvinylpyrrolidone thereto, and continuing to dissolve the same thoroughly by magnetic stirring; and finally adding a certain mass of potassium ferrocyanide and de-solubilizing the same for 10-60 minutes at room temperature, then transferring the above mixed solution into a sample bottle, and performing an isothermal reaction at 50-90&#xb0; C. for 18-24 hours to obtain a blue-black deposit, namely a target iron-manganese composite template; and (2) preparation of a hollow iron-manganese composite: evenly dispersing the blue-black iron-manganese composite template obtained in the step (1) to a small amount of anhydrous ethanol, then adding a certain concentration of sodium hydroxide solution thereto, placing the same on a rotary shaker to react at room temperature for 6-12 hours, and then removing a supernatant liquid, so that a black substance remaining at a bottom of a centrifuge tube is a hollow hydroxyl iron-manganese composite having a cubic structure. Also provided are a hollow hydroxyl iron-manganese composite prepared by the above method, and an application thereof to adsorption and removal of heavy metal in water.

Hollow iron-manganese composite material prepared by etching template process and application thereof

The present invention relates to a ferric and manganese binary oxide (FMBO) based adsorbent, its preparation and application method. The FMBO based adsorbent comprises a ferric and manganese binary oxide (FMBO) and a carrier. The mass ratio of FMBO to the carrier is between 0.2:100 and 15:100. The FMBO based adsorbent effectively removes the arsenic in groundwater, particularly the arsenite. The present invention also provides the equipment for preparation and application of the adsorbent.

Method for making ferric and manganese binary oxide based adsorbent

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Beijing, China

Jiuhui Qu