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

An ultra-high performance, biomass technology, applied in the field of adsorption materials, can solve the problems of low repeatability and complex synthesis methods, and achieve the effects of simple preparation process, good reproducibility, and preventing pore size shrinkage

Active Publication Date: 2020-02-21
JIANGSU UNIV OF SCI & TECH +2
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  • Claims
  • Application Information

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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

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

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preparation example Construction

[0031] The preparation method of the ultra-high performance biomass-based banana peel-guided activated carbon VOCs adsorbent of the present invention, the preparation method comprises the following steps:

[0032] Step 1: Chop the banana peel, wash it with distilled water, put it in an oven at 100-120 ℃, and dry it overnight;

[0033] Step 2: put the dried banana peel in step 1 into a tube furnace for high-temperature carbonization;

[0034] Step 3: Grinding and pulverizing the banana peel after high-temperature carbonization to 20-100 mesh powder to prepare banana peel biochar;

[0035] Step 4: Mix banana peel biochar and KOH evenly with different alkali-carbon mass ratios. Specifically, first put KOH in deionized water, stir and dissolve, then pour banana peel biochar and stir together (the ratio of biochar to water The ratio is 1 g of biochar to 10 ml of deionized water), the stirring time is 1-3 h, and then the mixture is placed in a vacuum oven at 110-120 °C, and dried f...

Embodiment 1

[0042] Chop the banana peels, wash them and dry them in an oven at 100-120 °C, put the dried banana skins into a tube furnace for high-temperature carbonization at a temperature of 300 °C, and the carbonization time is 1-3 h, then cool naturally After reaching room temperature, the carbonized banana peel biochar was ground and mixed with KOH aqueous solution at a mass ratio of alkali to carbon ratio of 1:1, and the stirring time was 1 h. 8-12 hours to get the alkali-carbon mixture; then activate, the activation temperature is 700 ℃, the activation time is 1-3 hours, naturally cool to room temperature, take it out, wash and filter, put it in an oven at 100-120 ℃ for overnight drying Dry to get biochar VOCs adsorbent.

Embodiment 2

[0044] Chop the banana peel, wash it and put it in an oven at 100-120 ℃ for drying, put the dried banana peel into a tube furnace for high-temperature carbonization at 400 ℃, carbonization time is 1-3 h, and then cool naturally After reaching room temperature, the carbonized banana peel biochar was ground and mixed with KOH aqueous solution at a mass ratio of alkali to carbon ratio of 2:1, and the stirring time was 1 h. The alkali-carbon mixture is obtained in 8-12 hours; then activated, the activation temperature is 800 ℃, the activation time is 1-3 hours, naturally cooled to room temperature, after taking it out, wash and filter, put it in an oven at 100-120 ℃ for overnight drying Dry to get biochar VOCs adsorbent.

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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...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01J20/20B01J20/041B01D53/02B01J2220/4825B01D2257/708Y02A50/20
Inventor 袁爱华沈旭华杨福陈海丰刘建峰杨振何映潼
Owner JIANGSU UNIV OF SCI & TECH
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