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Title:
SELF ASSEMBLING HEAVY METAL ADSORBENT AND PREPARATION METHOD AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/006814
Kind Code:
A1
Abstract:
Disclosed are a self assembling heavy metal adsorbent, and a preparation method and a use thereof. The adsorbent is prepared by a concentrated water-in-oil emulsion process, whereby a polyamine amphiphile having a plurality of active amino hydrogens, used as an emulsion stabilizer, self assemble at an oil-water interface to obtain a concentrated water-in-oil emulsion, with the active amino hydrogens being expressed at the oil-water interface and facing a water phase; then the concentrated water-in-oil emulsion solidifies to form a matrix, and the active amino hydrogens are substituted by acetate radicals, forming aminopolycarboxylate groups which are expressed on a pore surface of the matrix. The adsorbent is useful for treating wastewater or soil containing heavy metals. In comparison to the prior art, the present invention involves expressing the active amino hydrogens at an interface of the concentrated water-in-oil emulsion by means of self assembling of the macromolecular polyamine amphiphile, and during or after formation of a porous matrix, converting an amino group into an aminopolycarboxylate structure have a high metal adsorption efficiency. The synthesis process is simpler, the surface coverage rate of functional groups is higher, the adsorption rate is faster, and the adsorbent is easy to regenerate.

Inventors:
WAN DECHENG (CN)
WENG SHIQI (CN)
JIN MING (CN)
Application Number:
PCT/CN2018/100195
Publication Date:
January 09, 2020
Filing Date:
August 13, 2018
Export Citation:
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Assignee:
UNIV TONGJI (CN)
International Classes:
B01J20/22; B01J20/30; B09C1/08; C02F1/28; C02F101/20
Foreign References:
CN108126675A2018-06-08
CN102489268A2012-06-13
JP2010070738A2010-04-02
Attorney, Agent or Firm:
SHANGHAI KESHENG INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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