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Preparation method of deciduous leaf activated carbon

A technology of activated carbon and fallen leaves, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of polluted environment, excellent adsorption effect of activated carbon, etc., achieve the effects of regulating soil properties, reducing residual pesticides, and simple preparation methods

Active Publication Date: 2017-01-25
NANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the purpose of the present invention is to address the deficiencies in the prior art, provide a kind of deciduous activated carbon and its preparation method, solve the problem of using strong alkali solution as the activator to pollute the environment in the prior art, and the prepared activated carbon adsorbs Excellent effect

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  • Preparation method of deciduous leaf activated carbon
  • Preparation method of deciduous leaf activated carbon
  • Preparation method of deciduous leaf activated carbon

Examples

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Embodiment 1

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

[0040] (1) Pulverization: Wash the fallen leaves of the sycamore tree with water to remove impurities, and after drying, use a plant tissue pulverizer to pulverize to obtain fallen leaf powder;

[0041] (2) Impregnation: impregnate the fallen leaf powder in step (1) with a phosphoric acid solution with a mass fraction of 20% at 40°C for 4 hours and then dry to obtain a block material. The solid-to-liquid ratio of the fallen leaf powder to the phosphoric acid solution is 1:3 g / mL;

[0042] (3) Carbonization: carbonize the bulk material in step (2) into a carbon block, wherein the carbonization temperature is 400°C, and the carbonization time is 0.5h;

[0043] (4) Crushing: Break the cooled carbon block to a particle size of 10mm to obtain an amorphous granular carbon block;

[0044] (5) Activation: activate the amorphous granular carbon block in step (4) into crude activated carbon, w...

Embodiment 2

[0049] A preparation method of deciduous activated carbon, comprising the following steps:

[0050] (1) Pulverization: Wash the fallen leaves of poplar with water to remove impurities, and after drying, crush them with a plant tissue pulverizer to obtain fallen leaf powder;

[0051] (2) Impregnation: Immerse the fallen leaf powder in step (1) with a phosphoric acid solution with a mass fraction of 40% at 50°C for 2 hours and then dry to obtain a lumpy material. The solid-to-liquid ratio of the fallen leaf powder to the phosphoric acid solution is 1:7 g / mL;

[0052] (3) Carbonization: carbonize the bulk material in step (2) into a carbon block, wherein the carbonization temperature is 600°C, and the carbonization time is 1.5h;

[0053] (4) Crushing: crush the cooled carbon block to a particle size of 9mm to obtain an amorphous granular carbon block;

[0054] (5) Activation: activate the amorphous granular carbon block in step (4) into crude activated carbon, wherein the activ...

Embodiment 3

[0059] A preparation method of deciduous activated carbon, comprising the following steps:

[0060] (1) Pulverization: Wash the fallen leaves of the paulownia tree with water to remove impurities, and after drying, use a plant tissue pulverizer to pulverize to obtain fallen leaf powder;

[0061] (2) Impregnation: Immerse the fallen leaf powder in step (1) with a phosphoric acid solution with a mass fraction of 30% at 45°C for 3 hours and then dry to obtain a block material. The solid-to-liquid ratio of the fallen leaf powder to the phosphoric acid solution is 1:5 g / mL;

[0062] (3) Carbonization: carbonize the bulk material in step (2) into carbon blocks, wherein the carbonization temperature is 500°C, and the carbonization time is 1h;

[0063] (4) Crushing: Break the cooled carbon block to a particle size of 6mm to obtain an amorphous granular carbon block;

[0064] (5) Activation: activate the amorphous granular carbon block in step (4) into crude activated carbon, wherein...

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Abstract

The invention discloses deciduous leaf activated carbon which is obtained by pulverizing deciduous leaves, impregnating in phosphoric acid, carbonizing in a carbonization furnace, activating, washing with acid, washing with water, and drying. The deciduous leaf activated carbon has a well-developed gap structure, a large internal specific surface area, stable properties, and high adsorption capacity. The deciduous leaf activated carbon has an iodine absorption value of 1853-1873 mg / g, a methylene blue adsorption value of 606-621 mg / g and a specific surface area of 1628.5-1645.3 m2 / g; and the deciduous leaf activated carbon can be used for decolorization, military gas masks, cigarette filters, air purifiers, water plant water treatment, drinking water purification, detoxification, control of radioactive element pollution, reduction of soil pesticide residues, conditioning of soil properties, control of indoor formaldehyde, preservation of vegetables and the like, thereby having very strong practicality.

Description

technical field [0001] The invention relates to a preparation method of activated carbon, in particular to a preparation method of deciduous activated carbon. Background technique [0002] Activated carbon is a product obtained by carbonization and activation using charcoal, sawdust, coconut shell, various fruit cores, pulp waste liquid and other agricultural and forestry by-products, coal and heavy petroleum. It is called micro-quality with charcoal, carbon black and coke. charcoal or amorphous charcoal. [0003] At present, activated carbon is widely used in various fields of food, pharmaceutical, chemical and other industrial production, because of its developed pore structure, huge specific surface area, unique surface functional groups, strong adsorption capacity and good chemical stability. However, the traditional raw materials for preparing activated carbon in the prior art are mainly natural mineral plants such as coal and solid wood, but the reserves of coal are l...

Claims

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Application Information

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IPC IPC(8): C01B32/342C01B32/324
CPCC01P2002/72C01P2002/82C01P2004/03C01P2006/12C01P2006/14C01P2006/16C01P2006/17
Inventor 田龙褚学英
Owner NANYANG NORMAL UNIV
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