Title:
PREPARATION METHOD FOR COMPOSITE MICROSPHERES, COMPOSITE MICROSPHERES PREPARED THEREBY AND USE
Document Type and Number:
WIPO Patent Application WO/2023/123139
Kind Code:
A1
Abstract:
The present invention relates to the technical field of remediation of heavy metal contaminated soil, in particular to a preparation method for composite microspheres, composite microspheres prepared thereby and the use. The preparation method for the composite microspheres comprises the following steps: mixing cellulose and an ionic liquid, and heating the resulting mixture to obtain a cellulose solution; mixing the cellulose solution, attapulgite, magnetic particles and a pore-forming agent, dropwise adding the obtained solution mixture into an acid solution, and filtering the resulting mixture to obtain composite microspheres; and mixing the composite microspheres, a solvent and acrylamide, then adding an initiator and an acid, reacting the resulting mixture under stirring, and performing filtration and drying to obtain the composite microspheres. The composite microspheres prepared by the preparation method provided by the present invention can effectively solidify and stabilize cadmium ions in soil, thus reducing the biological availability of cadmium ions, and reducing the amount of heavy metals absorbed by crops from soil.
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Inventors:
LI BO (CN)
GUO LILI (CN)
WANG BEILI (CN)
LI SHUPENG (CN)
XIONG JING (CN)
XU HONGWEI (CN)
FAN QIANG (CN)
YANG XU (CN)
LI YAXIU (CN)
GUO LILI (CN)
WANG BEILI (CN)
LI SHUPENG (CN)
XIONG JING (CN)
XU HONGWEI (CN)
FAN QIANG (CN)
YANG XU (CN)
LI YAXIU (CN)
Application Number:
PCT/CN2021/142738
Publication Date:
July 06, 2023
Filing Date:
December 29, 2021
Export Citation:
Assignee:
BCEG ENV REMEDIATION CO LTD (CN)
International Classes:
B01J20/24; B01J20/28; B01J20/30; B09C1/08
Foreign References:
| CN108889278A | 2018-11-27 | |||
| CN108620032A | 2018-10-09 | |||
| CN106179249A | 2016-12-07 | |||
| CN103183832A | 2013-07-03 | |||
| US20140284281A1 | 2014-09-25 |
Other References:
LI, BO ET AL.: "Functionalized porous magnetic cellulose/Fe3O4 beads prepared from ionic liquid for removal of dyes from aqueous solution", INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, vol. 163, 3 July 2020 (2020-07-03), XP086300193, ISSN: 0141-8130, DOI: 10.1016/j.ijbiomac.2020.06.280
GONG, GUIZHEN ET AL.: "Study on Adsorption Performance of Peanut Shell Cellulose Modified with Acrylamide for Cadmium Ion from Water", CEREALS & OILS, vol. 34, no. 4, 10 April 2021 (2021-04-10), XP009546984, ISSN: 1008-9578
GONG, GUIZHEN ET AL.: "Study on Adsorption Performance of Peanut Shell Cellulose Modified with Acrylamide for Cadmium Ion from Water", CEREALS & OILS, vol. 34, no. 4, 10 April 2021 (2021-04-10), XP009546984, ISSN: 1008-9578
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD (CN)
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