Lignin modified activated carbon adsorbent, and preparation method thereof

Abstract

The invention discloses a lignin modified activated carbon adsorbent which is prepared from the following raw materials in parts by weight: 20-25 parts of rice husk, 20-25 parts of bamboo charcoal, 6-9 parts of potassium chloride, 2-3 parts of cerium oxide, 0.5-1 part of ammonium persulfate, 6-9 parts of powdered pumice, 8-10 parts of diatomite powder, 100-120 parts of activated carbon powder, 10-13 parts of attapulgite, 3-5 parts of magnesium nitride, 10-14 parts of lignin, 4-5 parts of modified diatomite and a suitable amount of water. By virtue of high-temperature carbonization of the rice husk, a thin pore structure can be easily formed, and activated carbon with more-developed pores and better adsorptive property can be prepared; by use of powdered pumice, the pores of the activated carbon can be increased; by use of the diatomite powder and attapulgite, antibacterial property, deodorization, moisture absorption, mould prevention as well as catalytic decomposition of organics can be realized; by use of the lignin, the cohesive force is improved, so the lignin modified activated carbon adsorbent is less in possibility of being disintegrated, and is safe and environment-friendly. The lignin modified activated carbon adsorbent disclosed by the invention is suitable for dust desorption.

Description

technical field [0001] The invention relates to the field of modified functional materials, in particular to a lignin-modified activated carbon adsorbent and a preparation method thereof. Background technique [0002] At present, adsorbents are often used to remove toxins, mainly silica gel, activated alumina, activated carbon, molecular sieves, etc., and there are also adsorption materials developed for the selective adsorption of certain components. However, most of these adsorbents have limited adsorption capacity, and different adsorbents need to be studied according to different requirements to play the best role. At the same time, look for new raw materials to enhance the adsorption effect and save costs. Contents of the invention [0003] The object of the present invention is to provide a lignin modified activated carbon adsorbent and a preparation method thereof. [0004] Technical scheme of the present invention is as follows: [0005] A lignin modified activa...

AI Technical Summary

Problems solved by technology

However, most of these adsorbents have limited adsorption capacity, and different adsorbents need to be studied according to different requirements to play the best role.