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Preparation method of active carbon using tea residue

A technology for preparing activated carbon and tea residues, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve problems such as no reports on the preparation of activated carbon from tea residues

Inactive Publication Date: 2013-05-15
SUZHOU GULI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no report on the preparation of activated carbon from tea leaves

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: Dry and pulverize 1000g of tea leaves; immerse in 30-50% sodium carbonate solution 3 times its mass for 24 hours; heat at a heating rate of 50°C / min to a carbonization temperature of 800°C, holding time for 10 minutes; carbonization is complete Finally, rinse with hot water at 80°C; after rinsing, adjust the pH value of the material to neutral; dry, grind, and obtain.

Embodiment 2

[0012] Example 2: Dry and pulverize 1000g of tea leaves; immerse in a 30-50% sodium bicarbonate solution 5 times its mass for 48 hours; heat to a carbonization temperature of 1000°C at a heating rate of 50°C / min, and hold for 10 minutes; carbonize After finishing, rinse with hot water at 80°C; after rinsing, adjust the pH value of the material to neutral; dry and pulverize to obtain.

Embodiment 3

[0013] Example 3: Dry and pulverize 1000g of tea leaves; dip in 40% potassium tartrate solution 4 times its mass for 48 hours; heat to carbonization temperature of 800°C at a heating rate of 50°C / min, and hold for 10 minutes; after carbonization, Rinse with hot water at 80°C; after rinsing, adjust the pH value of the material to neutral; dry, grind, and obtain.

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PUM

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Abstract

The invention relates to a preparation method of active carbon using tea residue, which comprises the following steps of: drying 1,000g of tea residue and grinding; steeping in 30-50% alkaline solution of which the mass is 3-5 times that of the tea residue for 24-48 hours; heating to a carbonization temperature of 800-1,000 DEG C at a heating rate of 50 DEG C per minute, and preserving heat for 10 minutes; after the carbonization, rinsing with hot water at 80 DEG C; after the rinsing, adjusting the pH value of the material to neutrality; and drying and grinding to obtain active carbon, wherein the alkaline solution is sodium carbonate, sodium bicarbonate, potassium bicarbonate, potassium tartrate and the like. The preparation method provided by the invention has the beneficial effects that active carbon can be prepared conveniently and easily, resource waste is avoided, and environment is protected.

Description

Technical field: [0001] The invention relates to the field of preparation of activated carbon, in particular to the field of preparation of activated carbon from tea leaves. technical background: [0002] Tea is a very important economic crop with special economic value. As a part of tea leaves, tea dregs are renewable resources. After drinking tea leaves, they are discarded every year to form solid wastes that constitute environmental pollution, or are dried and incinerated to cause air pollution. This not only destroys the ecological environment, but also wastes available resources. Therefore, it is of great significance to explore the comprehensive utilization technology of tea residue. [0003] Activated carbon is a carbonaceous material with developed pore structure, huge specific surface area and excellent adsorption performance. At present, activated carbon has been widely used in national defense, chemical industry, petroleum, textile, food, medicine, atomic...

Claims

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Application Information

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IPC IPC(8): C01B31/12C01B32/324C01B32/348
Inventor 吴娟
Owner SUZHOU GULI BIOTECH
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