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Durian shell activated carbon and preparation method thereof

A durian shell and activated carbon technology, which is applied in chemical instruments and methods, climate sustainability, sustainable manufacturing/processing, etc., can solve the problems of high regeneration cost, high preparation cost, and ecological damage, and achieve delay of corrosion time, Promotes merging and connection, and the effect of developing pores

Inactive Publication Date: 2019-05-03
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although activated carbon is an excellent adsorbent, its application is limited due to its expensive regeneration
[0003] At present, most activated carbon uses petroleum fuel and wood as its raw materials. With the continuous reduction of petroleum fuel and wood resources, the preparation cost is getting higher and higher.
Moreover, the massive felling of timber and the excessive exploitation of oil have seriously damaged the ecology.

Method used

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  • Durian shell activated carbon and preparation method thereof
  • Durian shell activated carbon and preparation method thereof
  • Durian shell activated carbon and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of durian shell activated carbon, comprising the following steps:

[0033] (1) Pretreatment: After the durian shells are washed, dried, and broken, they are pulverized with a high-speed multifunctional pulverizer, screened with a 100-mesh molecular sieve, and then 30% H 3 PO 4 The solution was soaked for 24h.

[0034] (2) Carbonization: Put the pretreated activated carbon raw material into a tube furnace for carbonization, raise the temperature at a rate of 3°C / min, keep it at 500°C for 120min, and take it out after cooling down to room temperature. After washing with distilled water, put it into a drying oven to dry at a temperature of 80° C., and wait until the mass reaches a constant weight to obtain a carbonized material.

[0035] (3) Activation: Weigh 3g of composite activator (KOH&KHCO 3 =2.5:0.5) was quickly ground into powder, and then weighed 1g of the carbonized material prepared above, and the two were fully mixed. Put it into a micro...

Embodiment 2

[0039] A preparation method of durian shell activated carbon, comprising the following steps:

[0040] (1) Pretreatment: After the durian shells are washed, dried, and broken, they are pulverized with a high-speed multifunctional pulverizer, screened with 80 mesh molecular sieves, and then 40% H 3 PO 4 The solution was soaked for 12h.

[0041] (2) Carbonization: put the pretreated activated carbon raw material into a tube furnace for carbonization, raise the temperature at a rate of 3°C / min, keep it at 600°C for 60min, and take it out after cooling down to room temperature. After washing with distilled water, put it into a drying oven to dry at a temperature of 80° C., and wait until the mass reaches a constant weight to obtain a carbonized material.

[0042] (3) Activation: Weigh 4g of the composite activator (KOH&NaOH=3:1) and quickly grind it into powder, then weigh 1g of the carbonized material prepared above, and mix the two thoroughly. Put it into a microwave activati...

Embodiment 3

[0047] A preparation method of durian shell activated carbon, comprising the following steps:

[0048] (1) Pretreatment: After the durian shells are washed, dried, and broken, they are pulverized with a high-speed multifunctional pulverizer, screened with a 60-mesh molecular sieve, and then 60% H 3 PO 4 The solution was soaked for 24h.

[0049] (2) Carbonization: Put the pretreated activated carbon raw material into a tube furnace for carbonization, raise the temperature at a rate of 3°C / min, keep it at 600°C for 120min, and take it out after cooling down to room temperature. After washing with distilled water, put it into a drying oven to dry at a temperature of 80° C., and wait until the mass reaches a constant weight to obtain a carbonized material.

[0050] (3) Activation: Weigh 4g of composite activator (KOH&K 2 CO 3 =4:2) quickly ground into powder, then weighed 1g of the carbonized material prepared above, and fully mixed the two. Put it into a microwave activation d...

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Abstract

The invention relates to the technical field of activated carbon preparation, and particularly relates to durian shell activated carbon and a preparation method thereof. The preparation method comprises the following steps: cleaning durian shells, carrying out drying and crushing, then carrying out carbonization by H3PO4, mixing and grinding the obtained carbonized material with a composite activator, carrying out heating and activating under an inert gas condition, carrying out cooling to obtain an activated material, soaking the activated material with 4-6 wt% hydrochloric acid, carrying outfiltering, and carrying out washing with deionized water until the pH value of the filtrate is equal to 7, and carrying out drying to obtain the durian shell activated carbon with a high specific surface area. According to the invention, the waste durian shells are reasonably utilized, and the ecological environment is protected; the durian shell powder is modified by H3PO4, the specific surfacearea is increased, and the adsorption effect is improved; cost is saved by adopting the composite activator; and microwave heating is used, so that the activation time is shortened, heating is uniform, activation efficiency is improved, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of activated carbon preparation, in particular to a method for preparing durian shell activated carbon. Background technique [0002] As a carbon material with developed pore structure, activated carbon has very stable physical and chemical properties, and has a series of advantages such as electrical conductivity, excellent adsorption performance, high temperature resistance, heat transfer, acid and alkali resistance, and is widely used in liquid and gas phases. Adsorption, refining, separation, decolorization, catalysis and other fields have great significance in food, chemical industry, medicine, environmental protection and other aspects. Although activated carbon is an excellent adsorbent, its application is limited due to its expensive regeneration cost. [0003] At present, activated carbon mostly uses petroleum fuel and wood as its raw materials. With the continuous reduction of petroleum fuel and w...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/348
CPCY02P20/10
Inventor 秦恒飞程青周月张春勇汪斌
Owner JIANGSU UNIV OF TECH