Preparation method and application of ultrahigh-performance biomass-based banana peel guided activated carbon VOCs adsorbent

Abstract

The invention relates to a preparation method and application of an ultrahigh-performance biomass-based banana peel guided activated carbon VOCs adsorbent, wherein the preparation method comprises thesteps: cutting banana peel into pieces, washing cleanly, and carrying out high-temperature carbonization to prepare charcoal; and then mixing the charcoal with KOH in proportion, and then carrying out high-temperature activation to obtain the final banana peel charcoal. The preparation method disclosed by the invention has the advantages that banana peel is used as a carbon source, KOH is used asa dehydrating agent, and the prepared banana peel charcoal has ultrahigh specific surface area and pore volume, and has ultrahigh adsorption capacity for VOCs; the method has the advantages of sufficient used raw material sources, low production cost, simple material preparation process, favorable reproducibility and favorable adsorbability, and is easy to operate; and the method realizes efficient utilization of waste banana peel, solves the problem of treatment of the waste banana peel, improves the utilization efficiency of charcoal resources, and expands the application of the charcoal inthe field of environmental protection.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, in particular to a preparation method and application of an ultra-high-performance biomass-based banana peel-guided activated carbon VOCs adsorbent. Background technique [0002] Banana is one of the four most important fruits in the world, and China is one of the countries with the largest banana production in the world. During the development of the banana processing industry, a large amount of waste such as banana peels has also been produced. Since the banana peel accounts for 40% of the total weight of the banana, it is necessary to use it. Biochar is a kind of adsorbent with great application potential, which can comprehensively utilize waste biological resources to achieve the purpose of turning waste into treasure. [0003] Today, the development of industrialization has greatly improved people's lives and promoted social development. But at the same time, it has also caus...

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Problems solved by technology

Biochar materials have attracted the attention of the society because of the easy-to-obtain carbon source, simple preparation process, and excellent performance. In recent years, they have been widely used in supercapacitors, wastewater treatment and other fields. For example, patent CN 109126714 A discloses a TiO 2 / SiO 2 - preparation method of banana peel biochar composite adsorption material and the adsorption material made thereof, which comprises: cleaning banana peel, drying, pulverizing, sieving to obtain powdery material, mixing and shaking with phosphoric acid solution, filtering, drying, Phosphoric acid modified banana peel powder was prepared; TiO 2 and SiO 2 loaded on the surface of modified banana peel biochar to prepare TiO 2 / SiO 2 –Banana peel biochar composite adsorption material, using agricultural production waste banana peel to prepare biochar, rich in raw materials, turning waste into treasure, and the preparation method is simple, low cost, and the prepared composite adsorption material has no effect on the herbicide quinclorac The adsorption effect is remarkable, and TiO with photodegradable organic pollutants in the composite 2 , while solving the adsorption capacity, the composite adsorption material can be used to cooperate with the adsorption of quinclorac and photocatalytic degradation. The synthesis method of this invention is relatively complicated, with low repeatability, and is not suitable for applications in the field of atmospheric environment

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