Preparation method and application of sunflower seed husk activated carbon

A sunflower seed shell and activated carbon technology, applied in the field of activated carbon, can solve the problems of high cost, difficult zinc chloride recovery, poor adsorption effect, etc., and achieve the effects of convenient operation, good treatment effect and wide application range

Inactive Publication Date: 2017-12-15
GUANGZHOU JUCHAN MODERN AGRI RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The zinc chloride activation method is a mature process, which was applied earlier, but there are defects such as environmental pollution, difficult recovery of zinc chloride, and high cost.
[0004] Activated carbon currently on the market is mainly composed of micropores, with only a small amount of mesopores and macropores, which is quite beneficial for the adsorption of small and medium molecules of gas and liquid, but the adsorption effect for some polymers, organic electrolytes and inorganic macromolecules is poor.
There is no report on the preparation of activated carbon from sunflower seed hulls

Method used

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  • Preparation method and application of sunflower seed husk activated carbon
  • Preparation method and application of sunflower seed husk activated carbon
  • Preparation method and application of sunflower seed husk activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of sunflower seed shell activated carbon, comprising the following steps:

[0027] (1) Washing, drying, pulverizing and sieving the sunflower seed husks, the particle size obtained by sieving is 0.5-1mm;

[0028] (2) Mix the crushed sunflower seed hulls with a certain concentration of phosphoric acid according to a certain liquid-solid ratio, place it for 10-12 hours after fully stirring, and then activate it in a vertical tube furnace for 2-4 hours, with a heating rate of 4-8 °C / min, the activation temperature is 550°C, the activation atmosphere condition is 100mL / min of water vapor, the concentration of phosphoric acid is 45%, and the liquid-solid ratio is 1:1;

[0029] (3) Take it out and cool it, wash it with 1% dilute hydrochloric acid or hot water, then wash it with distilled water until the pH value is 5-7, dry it at 110-120°C, grind it, and sieve it with a 200-mesh sieve to obtain the activated carbon product .

Embodiment 2

[0031] A preparation method of sunflower seed shell activated carbon, comprising the following steps:

[0032] (1) Washing, drying, pulverizing and sieving the sunflower seed husks, the particle size obtained by sieving is 0.5-1mm;

[0033] (2) Mix the crushed sunflower seed hulls with a certain concentration of phosphoric acid according to a certain liquid-solid ratio, place it for 10-12 hours after fully stirring, and then activate it in a vertical tube furnace for 2-4 hours, with a heating rate of 4-8 °C / min, the activation temperature is 600°C, the activation atmosphere is 100mL / min of water vapor, the concentration of phosphoric acid is 50%, and the liquid-solid ratio is 1.25:1;

[0034] (3) Take it out and cool it, wash it with 1% dilute hydrochloric acid or hot water, then wash it with distilled water until the pH value is 5-7, dry it at 110-120°C, grind it, and sieve it with a 200-mesh sieve to obtain the activated carbon product .

[0035] Example 1

[0036] A pre...

Embodiment 4

[0041] A preparation method of sunflower seed shell activated carbon, comprising the following steps:

[0042] (1) Washing, drying, pulverizing and sieving the sunflower seed husks, the particle size obtained by sieving is 0.5-1mm;

[0043](2) Mix the crushed sunflower seed hulls with a certain concentration of phosphoric acid according to a certain liquid-solid ratio, place it for 10-12 hours after fully stirring, and then activate it in a vertical tube furnace for 2-4 hours, with a heating rate of 4-8 °C / min, the activation temperature is 450°C, the activation atmosphere is 100mL / min of water vapor, the concentration of phosphoric acid is 35%, and the liquid-solid ratio is 1.5:1;

[0044] (3) Take it out and cool it, wash it with 1% dilute hydrochloric acid or hot water, then wash it with distilled water until the pH value is 5-7, dry it at 110-120°C, grind it, and sieve it with a 200-mesh sieve to obtain the activated carbon product .

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Abstract

The invention belongs to the technical field of activated carbon and in particular relates to a preparation method and an application of sunflower seed husk activated carbon. Sunflower seed husks serve as raw materials, a phosphoric acid activation technology is adopted, mesopore activated carbon and micro-pore activated carbon can be prepared by controlling the concentration of phosphoric acid, an activation temperature and a liquid-solid ratio, and the prepared activated carbon is convenient to operate, low in activation temperature and wide in application range. The mesopore activated carbon and micro-pore activated carbon prepared in the invention are mixed according to a certain ratio so as to be used for treating domestic sewage, the ammonia-nitrogen content is decreased by 12.12%, the phosphate content is decreased by 55.56%, the content of COD (Chemical Oxygen Demand) is decreased by 83.56%, and the treatment effect is excellent.

Description

technical field [0001] The invention belongs to the technical field of activated carbon, and in particular relates to a preparation method and application of sunflower seed shell activated carbon. Background technique [0002] Activated carbon is a high-quality adsorbent with a unique pore structure and surface active functional groups. It has sufficient chemical stability, mechanical strength, acid resistance, alkali resistance, heat resistance, and is insoluble in water and organic solvents. It is easy to regenerate after use, etc. Good performance makes it have extremely extensive and important uses in food processing, pharmaceuticals, chemistry, metallurgy, agriculture, environmental protection, etc. The sunflower seed industry has a long history in China. The main producing area of ​​Chinese sunflowers and sunflower seeds is Bayaner City, Inner Mongolia. In addition, Xinjiang, Gansu, Shaanxi, the three northeastern provinces, Hebei, and Shandong are all produced in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/342B01J20/20B01J20/30C02F1/28
CPCB01J20/20C01P2006/12C01P2006/16C02F1/283
Inventor 刘冰星
Owner GUANGZHOU JUCHAN MODERN AGRI RES INST CO LTD
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