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Preparation method of high-dispersion organic bentonite

A high-dispersity, bentonite technology, applied in chemical instruments and methods, water/sludge/sewage treatment, adsorbed water/sewage treatment, etc. Dispersion performance, improved surface activity, and the effect of simple preparation steps

Inactive Publication Date: 2016-12-07
仇颖莹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention: in view of the low content of solid particles in the suspension in the preparation of organobentonite, a lot of heat energy needs to be provided, so that it takes a long time and the production efficiency is low. Together, the activation is insufficient, which limits its range of use to a large extent. A kind of use of octadecyltrimethylammonium chloride and tetramethylammonium bromide as organic modifiers for sodium-based bentonite powder is provided. Carry out organic modification to obtain organic bentonite suspension after treatment, then ferment the tea seed cake, use tea saponin to inoculate Bacillus subtilis and inoculate Pseudomonas aeruginosa to obtain biosurfactant, and the biological surface The active agent is mixed with the organic bentonite suspension to improve the dispersion performance of the sodium bentonite

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0016] First weigh 25g of sodium bentonite, put it in an oven at 70°C and dry it for 5 hours, then put it into a grinder to grind and sieve to obtain 200 mesh sodium bentonite powder, add 200mL of 70°C warm water, 5g of ten Octyltrimethylammonium chloride and 1.2g tetramethylammonium bromide were mixed and stirred for 50 minutes to obtain an organic modifier, and the sodium-based bentonite powder obtained by screening was added to the organic modifier, and ultrasonicated at a power of 220W Disperse for 30 minutes, get organic bentonite suspension after treatment, and set aside; then weigh 80g tea seed cake, pulverize and sieve to get 100 mesh tea seed cake powder, mix tea seed cake powder with solid-liquid ratio of 1:5 Mix with 50% ethanol solution, and extract at 60°C for 7 hours. After the extraction, centrifuge to obtain the supernatant, adjust the pH value of the supernatant to 5.5 with 5% hydrochloric acid solution, and add total Quality 1.2% cellulase, after enzymolysis ...

example 2

[0019]First, weigh 15g of sodium bentonite, put it in an oven at 60°C and dry it for 3 hours, then put it into a grinder to grind and sieve to obtain a 150-mesh sodium bentonite powder, and add 180mL of warm water at 60°C, 3g of ten Octyltrimethylammonium chloride and 0.8g tetramethylammonium bromide were mixed and stirred for 30 minutes to obtain an organic modifier, and the sodium-based bentonite powder obtained by screening was added to the organic modifier, and ultrasonicated at a power of 180W Disperse for 20 minutes, get organic bentonite suspension after treatment, set aside; then weigh 50g tea seed cake, pulverize and sieve to get 80 mesh tea seed cake powder, mix tea seed cake powder with solid-liquid ratio 1:5 Mix with 50% ethanol solution, and extract at 50°C for 5 hours. After extraction, centrifuge to obtain the supernatant, adjust the pH value of the supernatant to 5.0 with 5% hydrochloric acid solution, and add total Quality 0.8% cellulase, after 10 hours of enz...

example 3

[0022] First, weigh 20g of sodium bentonite, put it in an oven at 65°C and dry it for 4 hours, then put it into a grinder to grind and sieve to obtain 170 mesh sodium bentonite powder, add 190mL of warm water at 65°C, 4g of ten Octyltrimethylammonium chloride and 0.9g tetramethylammonium bromide were mixed and stirred for 40 minutes to obtain an organic modifier, and the sodium-based bentonite powder obtained by screening was added to the organic modifier, and ultrasonically Disperse for 25 minutes, get organic bentonite suspension after treatment, and set aside; then weigh 60g tea seed cake, pulverize and sieve to get 90 mesh tea seed cake powder, mix tea seed cake powder with solid-liquid ratio of 1:5 Mix with 50% ethanol solution, and extract at 55°C for 6 hours. After the extraction, centrifuge to obtain the supernatant, adjust the pH value of the supernatant to 5.2 with 5% hydrochloric acid solution, and add total Quality 1.0% cellulase, after 12 hours of enzymolysis, ste...

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Abstract

The invention relates to a preparation method of high-dispersion organic bentonite, and belongs to the field of chemical industry. The method comprises the steps that octadecyl trimethyl ammonium chloride and tetramethyl ammonium bromide serve as organic modifiers to conduct organic modification on sodium-based bentonite powder, treatment is conducted, and organic bentonite suspension is obtained; tea seed cake is subjected to fermentation, by means of tea saponin, inoculation of bacillus subtilis and inoculation of pseudomonas aeruginosa are conducted, culture is conducted, and biosurfactant is obtained; the biosurfactant and the organic bentonite suspension are mixed, and the dispersing performance of sodium-based bentonite is improved. According to the preparation method of the high-dispersion organic bentonite, the biosurfactant and the organic bentonite suspension are mixed, the surface activity of organic bentonite particles is improved, the dispersing performance of the organic bentonite can be improved, the specific surface area can reach 50 m<2> / g to 100 m<2> / g, the preparation steps are simple, and the required cost is low.

Description

technical field [0001] The invention relates to a preparation method of highly dispersible organic bentonite, which belongs to the field of chemical industry. Background technique [0002] Organobentonite is an inorganic mineral / organic ammonium compound, using bentonite as raw material, using the lamellar structure of montmorillonite in bentonite and its ability to swell and disperse into colloidal clay particles in water or organic solvents, through ion exchange technology inserts organic coverings. Organobentonite can form gels in various organic solvents, oils, and liquid resins, and has good thickening properties, thixotropy, suspension stability, high temperature stability, lubricity, film-forming properties, water resistance and chemical stability. , has important application value in the paint industry, and is also widely used in paint ink, aviation, metallurgy, chemical fiber, petroleum and other industries. The dispersion properties of organic bentonite in organi...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30C02F1/28
CPCB01J20/22B01J20/12B01J2220/46B01J2220/4806B01J2220/4812C02F1/28C02F1/281C02F1/285C02F1/286
Inventor 仇颖莹薛培龙王统军
Owner 仇颖莹
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