| abstract |
The invention discloses a preparation method of a modified vermiculite adsorbent, comprising the following steps: (1) mixing vermiculite powder into water to obtain vermiculite slurry, and irradiating it with low-temperature plasma to obtain exfoliated vermiculite slurry; (2) ) mixing sodium silicate and phosphoric acid to obtain a silicon-phosphorus mixed solution; (3) mixing the silicon-phosphorus mixed solution and exfoliating vermiculite slurry, and then irradiating with low-temperature plasma to obtain a primary adsorption slurry; (4) mixing the cyclodextrin Add it into the primary adsorption slurry, stir and heat, dry, grind and sieve to obtain a modified vermiculite adsorbent. The preparation process of the invention is simple, the preparation process is simple, the vermiculite can be effectively peeled without using a strong acid or a pillar proppant, and the organic compound can be effectively loaded on the surface of the vermiculite flake; it is suitable for a water environment with a pH of 1-13, and can effectively Removal of 99% COD, 98% ammonia nitrogen, 98% Hg, 99% Cd in the leachate of domestic garbage; the required raw materials are few in variety and widely sourced, and the price is low. |