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Method for preparing activated carbon from wetland raw fruit shell and hydrolyzed feather powder mixed base carbon precursor

A technology for hydrolyzing feather meal and feathers, which is applied in chemical instruments and methods, carbon compounds, and other chemical processes, etc., can solve the problems of increased terminal treatment cost, high price, and environmental pollution of cleaning waste liquid, and achieves heavy metal adsorption capacity. Good, short production cycle, the effect of protecting the ecological environment

Active Publication Date: 2020-04-24
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, traditional modifiers of activated carbon such as HNO 3 , HClO, O 3 etc., the price is expensive, and at the same time, the cleaning waste liquid also increases the cost of terminal treatment and pollutes the environment

Method used

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  • Method for preparing activated carbon from wetland raw fruit shell and hydrolyzed feather powder mixed base carbon precursor
  • Method for preparing activated carbon from wetland raw fruit shell and hydrolyzed feather powder mixed base carbon precursor
  • Method for preparing activated carbon from wetland raw fruit shell and hydrolyzed feather powder mixed base carbon precursor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Wash the water chestnut skin and feathers several times with water to remove the attached impurities, dry them at 105°C for 6 hours, and then crush them with a pulverizer. The particle size of the crushed water chestnut skins is 0.45-1.0mm, and the fiber length of feather powder is figure 2 Shown in A), the average specific surface area (BET) of activated carbon is 1461.68m 2 / g, average micropore specific surface area 752.20m 2 / g, average pore volume 0.637cm 3 / g.

[0047] Use the activated carbon to test the adsorption of Ni(II) and Cd(II). Take 50ml of Ni(II) and Cd(II) solution with a concentration of 40mg / L in a 150ml Erlenmeyer flask, and add 0.04g of activated carbon. Shake at a frequency of 200rpm for 48 hours in a constant temperature air bath shaker, and after equilibrium, filter with a 0.45um filter membrane, take the filtrate, measure the concentration of remaining Ni(II) and Cd(II) in the filtrate, and calculate the adsorption capacity. Results The adsor...

Embodiment 2

[0049] Wash the water chestnut skin and feathers several times with water to remove the attached impurities, dry them at 105°C for 6 hours, and then crush them with a pulverizer. The particle size of the crushed water chestnut skins is 0.45-1.0mm, and the fiber length of feather powder is 2 / g, average micropore specific surface area 738.10m 2 / g, average pore volume 0.636cm 3 / g.

[0050] Use this gac to test the adsorption of its Ni(II) and Cd(II), the test method is the same as in Example 1, the result is that the gac is 27.46mg / g to the adsorption of Ni(II), and the adsorption to Cd(II) It is 28.24mg / g.

Embodiment 3

[0052] Wash the water chestnut skin and feathers several times with water to remove the attached impurities, dry them at 105°C for 6 hours, and then crush them with a pulverizer. The particle size of the crushed water chestnut skins is 0.45-1.0mm, and the fiber length of feather powder is 2 / g, average micropore specific surface area 731.08m 2 / g, average pore volume 0.632cm 3 / g.

[0053] Use this activated carbon to test the adsorption of Ni(II) and Cd(II), the test method is the same as in Example 1, the result is that the activated carbon has an adsorption capacity of 25.12mg / g for Ni(II), and the adsorption capacity for Cd(II) It is 27.74 mg / g.

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Abstract

The invention provides a method for preparing activated carbon from a mixed base carbon precursor of wetland raw fruit shells and hydrolyzed feather meal. The method comprises the following steps: preparing a mixed base carbon precursor by taking wetland raw fruit shells and feather as raw materials; impregnating the mixed base carbon precursor into a phosphoric acid solution; performing high temperature carbonization on the impregnated mixed base carbon precursor; cleaning and drying the substance subjected to high temperature carbonization. The activated carbon disclosed by the invention takes the waste wetland raw fruit shells and feather as the raw materials, is capable of repeatedly utilizing waste resources, has excellent average specific surface area, average micro-porous specific surface area and average pore volume, and is excellent in adsorbing effect and particularly excellent in heavy metal adsorption capacity. Moreover, the preparation process disclosed by the invention issimple, short in production cycle and low in cost.

Description

technical field [0001] The invention relates to the field of activated carbon preparation, in particular to a method for preparing activated carbon from wetland raw fruit shells and hydrolyzed feather powder mixed-based carbon precursors. Background technique [0002] Activated carbon is a porous carbon-containing substance, mainly composed of carbon elements, and also contains elements such as hydrogen, oxygen, sulfur, nitrogen, and some inorganic minerals. It has a rich internal pore structure and a relatively high specific surface area. It is extremely stable under extreme conditions such as strong acid, strong alkali, high temperature, and high pressure, so it is widely used in the adsorption and purification of harmful substances (such as organic pollutants and heavy metal pollutants) in the gas and liquid phases, such as environmental protection , gas separation, natural gas storage, medical applications and catalysis and many other fields. [0003] The current method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/324C01B32/342B01J20/20B01J20/30
CPCB01J20/20B01J20/30C01B32/324C01B32/342
Inventor 张建尹文俊赵聪聪季长兴于佳民郭子彰张成禄
Owner SHANDONG UNIV
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