Microwave organic modified particle bentonite/attapulgite adsorbent and preparation method thereof

A technology of attapulgite and bentonite, applied in chemical instruments and methods, adsorption water/sewage treatment, inorganic chemistry, etc., can solve the problems of secondary pollution, short ion exchange reaction time, etc., to increase strength and shorten modification time , Improve the effect of adsorption effect
CN104069822AInactive Publication Date: 2014-10-01WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2014-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a microwave organic modified particle bentonite / attapulgite adsorbent and a preparation method thereof. The technical scheme is as follows: bentonite powder and attapulgite powder are used as main raw materials and mixed at the mass ratio of 1: (0.3-0.5); the bentonite powder and the attapulgite powder, and water are uniformly mixed at the mass ratio of 1: (1.2-2), dried at the temperature of 100-110 DEG C, smashed until the particle diameters are within 0.2-0.9 mm and calcined for 2-2.5 h at the temperature of 720-780 DEG C; under the microwave condition, the mixture is modified by the hexadecyl trimethyl ammonium bromide equivalent to 25-200% of calcined particle bentonite / attapulgite to obtain the microwave organic modified particle bentonite / attapulgite adsorbent. According to the invention, the microwave organic modified particle bentonite / attapulgite adsorbent is simple in technology, short in modified time, environment-friendly and low in energy consumption; prepared microwave organic modified particle bentonite / attapulgite adsorbent is great in particle diameter, good in adsorptive performance and suitable for the treatment of wastewater containing heavy metal irons and chlorophenol.
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Description

technical field

[0001] The invention belongs to the technical field of adsorbents. In particular, it relates to a microwave organically modified granular bentonite / attapulgite adsorbent and a preparation method thereof. Background technique

[0002] Natural clay is cheap and easy to obtain and has a large specific surface area, which has a certain adsorption capacity for inorganic and organic pollutants. Bentonite is a kind of layered natural mineral clay with rich resources and low price. It has weak adsorption ability to hydrophobic organic matter before modification. Since the basic structure of bentonite is two layers of Si-O tetrahedron sandwiching a layer of A1-O octahedron, in which Si 4+ 、Al 3+ Can be Mg 2+ , Fe 2+ , Li + and Ni 2+ Substituted by low-priced ions, the electricity price of the bentonite unit cell is not saturated, and the bentonite layer is permanently negatively charged. This negative charge is usually balanced by the exchangeable hydrated cati...

Claims

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