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Method for preparing activated carbon from Girardinia straws

A technology for preparing activated carbon and hemp stalks, which is applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of wasting hemp stalk resources, and achieve the effect of facilitating promotion, short process and simple process

Inactive Publication Date: 2013-09-25
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After harvesting the fruits and flowers of hemp, the aging hemp stalks are useless, and farmers generally use them as fuel to burn them, which greatly wastes the resources of hemp stalks

Method used

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  • Method for preparing activated carbon from Girardinia straws
  • Method for preparing activated carbon from Girardinia straws
  • Method for preparing activated carbon from Girardinia straws

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019]

Embodiment 2

[0021]

Embodiment 3

[0023]

[0024] The main index of the gac product of embodiment 3 is:

[0025] CTC adsorption value (%)

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Abstract

The invention relates to a method for preparing activated carbon from Girardinia straws, which comprises the following steps: cutting air-dried Girardinia straws into small segments; soaking with a phosphoric acid / boric acid mixed solution, then taking out, and airing until no water drips; heating in a closed container, and carbonizing; cooling to room temperature, then soaking with an acid solution, and performing acid washing; taking out, draining, rinsing with deionized water, and drying; and cooling to room temperature, and pulverizing to obtain the activated carbon. According to the method for preparing activated carbon, waste of agricultural products is utilized, the added value of the agricultural products is increased, and the environment protection pressure is effectively reduced; and the method is simple in process, short in flow and beneficial to popularization.

Description

technical field [0001] The invention relates to a method for preparing activated carbon by using hemp stalks. Background technique [0002] Hemp is a perennial herb with lignified rhizomes. Stems 50-150 cm high, lower part up to 1 cm thick, quadrangular, often nearly without bristles, sometimes sparsely, sparsely densely bristled and slightly densely puberulent, with a few branches. Among them, the medicinal value of hemp mainly lies in hemp fruit, hemp flower and hemp root. After harvesting the fruits and flowers of hemp, the aging hemp stalks are useless, and farmers generally use them as fuel to burn them, which greatly wastes the resources of hemp stalks. On the other hand, because activated carbon is a carbonaceous substance with developed pore structure, huge surface area and excellent adsorption performance, it is widely used in national defense, chemical industry, petroleum, ocean, food, medicine, light industry, atomic energy industry, urban Construction, environ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/08C01B32/324C01B32/342
Inventor 黄福川覃克卢朝霞莫宇飞梁景粟满荣唐兴中蓝明新肖友程李胜梁慧唐彩珍田宗义李宏君赵钟兴唐丹葵刘琨黄孝平
Owner GUANGXI UNIV
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