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Shaddock peel activated carbon preparation method

A pomelo peel and activated carbon technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as pollution of the environment and waste of resources, and achieve the effects of good adsorption performance, many pores and large specific surface area.

Inactive Publication Date: 2010-02-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the peel is not utilized, it will cause waste of resources and pollute the environment

Method used

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  • Shaddock peel activated carbon preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Wash the pomelo peel to remove surface impurities, dry it at 110°C until the moisture content is 5%-10%, move it into a carbonization furnace, raise the temperature to 600°C, carbonize for 120 minutes under the condition of oxygen barrier, and pulverize to The scrap powder is mixed with KOH powder at a mass ratio of 1:1, put into an activation furnace, the temperature is programmed to 800°C, and activated for 240 minutes. The activated product is washed with water until neutral, and dried to obtain activated carbon from pomelo peel.

Embodiment 2

[0018] Wash the pomelo peel to remove surface impurities, dry it at 120°C until the moisture content is 5%-10%, move it into a carbonization furnace, raise the temperature to 500°C, carbonize for 120 minutes under the condition of oxygen barrier, and pulverize to The scrap powder is mixed with KOH powder according to the mass ratio of 1:2, put into the activation furnace, the temperature is programmed to 800°C, and activated for 240 minutes. The activated product is washed with HCl aqueous solution at pH 2-2.5 and temperature 95°C, and then separated from solid and liquid. Add water and stir well, put it into an ultrasonic oscillator and vibrate ultrasonically for 3 minutes, repeat the same method twice after suction filtration, wash until the pH is 6.5-7.0, and dry to get grapefruit peel activated carbon.

Embodiment 3

[0020] Wash the pomelo peel to remove surface impurities, dry it at 120°C until the moisture content is 5%-10%, move it into a carbonization furnace, raise the temperature to 600°C, carbonize for 120 minutes under the condition of oxygen barrier, and pulverize to The scrap powder is mixed with KOH powder at a mass ratio of 1:3, put into an activation furnace, the temperature is programmed to rise to 800°C, and activated for 240 minutes. The activated product is washed with water until neutral, and dried to obtain activated carbon from pomelo peel.

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Abstract

The invention relates to a shaddock peel activated carbon preparation method, comprising (1) washing the shaddock peels and removing the surface foreign materials and drying at 110-120 DEG C; (2) moving into a carbonization furnace for carbonizing 120-180 minutes at the carbonization temperature of 500-600 DEG C and in the oxygen isolation condition; (3) grinding, mixing with KOH powder and activating in the air flow at 700-800 DEG C and under 0.10-0.15 MPa; (4) activating the product and adding water to wash, dewatering, crushing and grading the solid material. The inventive method has simpleoperation, low cost, and environmental protection. Compared with the activated carbon prepared from other materials, the obtained activated carbon has more ducts, good adsorption, larger specific surface area and bigger pore volume.

Description

technical field [0001] The invention belongs to the field of activated carbon preparation, in particular to a preparation method of grapefruit peel activated carbon. Background technique [0002] At present, wood, wood chips, coconut shells, fruit shells, etc. are mostly used as raw materials for the preparation of activated carbon. Due to the reduction of wood and other sources, it is difficult to collect fruit shells, which greatly limits the raw materials for the preparation of activated carbon, and the price is also on the rise. Also have sludge, plastics as raw material preparation activated carbon, but this method can cause environmental pollution. At the same time, the adsorption efficiency of activated carbon prepared with the above raw materials is not ideal. Therefore, it is of great practical significance to seek new raw materials to prepare activated carbon by adopting a feasible new process. As a small evergreen shrub, the pomelo tree has delicious fruit with ...

Claims

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Application Information

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IPC IPC(8): C01B31/10C01B32/336
Inventor 吕永根岳奇伟李志强王小华秦显营
Owner DONGHUA UNIV
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