Preparation method of organic bentonite gel adsorbents
A technology of bentonite and adsorbent, which is applied in the field of preparation of bentonite adsorbent, and can solve the problems of poor permeability, failure to achieve the desired effect of recycling and reuse, loss, etc.
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[0024] The present invention will be described in detail below in conjunction with examples.
[0025] Synthesis principle:
[0026] Natural soil is a layered aluminosilicate, and the layers are combined by electrostatic interaction. There are extensive isomorphic substitutions in the tetrahedron and octahedron. Si4+ in the tetrahedron is often replaced by Al3+, and Al3+ in the octahedron is often replaced. It is replaced by Mg2+, Fe3+, Fe2+, Ni2+, Li+, etc., so that a weak negative charge is generated between the layers, so that it has the ability to adsorb certain cations. The organic modifier CPC can be inserted between the sheets of bentonite montmorillonite, which changes the interlayer spacing and specific surface area of bentonite, and improves the adsorption capacity of bentonite. CMC is a non-toxic and environmentally friendly food additive. Using its thickening properties, a single modified organic bentonite CPC-B is made into a thick liquid, and a cross-linking ag...
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