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Method for preparing carbon adsorption material with fish scales

A carbon adsorption and fish scale technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as environmental pollution and resource waste, and achieve high adsorption performance, simple process, The effect of large specific surface area

Inactive Publication Date: 2018-12-18
QINGHAI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From a global perspective, a small part of fish scales is usually discarded directly after rough processing as low-value fish meal for the feed industry or for extracting collagen, gelatin, etc., causing environmental pollution and waste of resources

Method used

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  • Method for preparing carbon adsorption material with fish scales
  • Method for preparing carbon adsorption material with fish scales
  • Method for preparing carbon adsorption material with fish scales

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Phosphoric acid activated fish scale carbon adsorption material

[0020] Weigh 20g of fish scale raw material and mix with 50g of phosphoric acid (concentration 85%) activator, and soak for 15h. Put the fully impregnated material into a box-type resistance furnace, heat up to 550°C at 20°C / min to activate for 60 minutes, take it out after cooling to room temperature, wash it with water for 5 times, filter it, dry it at 110°C for 10 hours, take it out and grind it. After sieving, put the prepared powdered fish scale carbon adsorption material sample into a sample bag for later use. The yield, specific surface area, and methylene blue adsorption value of the resulting product are shown in Table 1.

[0021] Table 1. Product performance of phosphoric acid activated fish scale carbon adsorption material

[0022]

Embodiment 2

[0024] Potassium hydroxide activated fish scale carbon adsorption material

[0025] Weigh 20g of fish scale raw material and mix with 30g of pure potassium hydroxide (formed into a 50% aqueous solution) activator, and soak for 20h. Put the fully impregnated material into a box-type resistance furnace, heat up to 800°C at 20°C / min and activate for 60 minutes, take it out after cooling to room temperature, wash it with water for 5 times, filter, dry at 110°C for 10 hours, take it out and grind, After sieving, put the prepared powdered fish scale carbon adsorption material sample into a sample bag for later use. The yield, specific surface area, and methylene blue adsorption value of the resulting product are shown in Table 2.

[0026] Table 2. Potassium hydroxide activated fish scale carbon adsorption material product performance

[0027]

Embodiment 3

[0029] Zinc chloride activated fish scale carbon adsorption material

[0030] Weigh 20g of the fish scale raw material and mix with 60g of pure zinc chloride (formed into an aqueous solution with a concentration of 60%) activator, and soak for 24 hours. Put the fully impregnated material into a box-type resistance furnace, heat up to 500°C at 20°C / min and activate for 90 minutes, take it out after cooling to room temperature, wash with water for 5 times, filter, dry at 110°C for 10 hours, take out and grind, After sieving, put the prepared powdered fish scale carbon adsorption material sample into a sample bag for later use. The yield, specific surface area, and methylene blue adsorption value of the resulting product are shown in Table 3.

[0031] Table 3. Product performance of zinc chloride activated fish scale carbon adsorption material

[0032]

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Abstract

The invention relates to a method for producing a carbon adsorption material with fish scales (carps). The method is as follows: (1) after being aired, fish scales which are taken as a raw material (not required to be ground) are uniformly mixed with a certain activator (KOH or H<3>PO<4> or ZnCl<2>) (the weight ratio of the activator to the fish scales is (1.5 to 3):1) and steeped for 10 to 24 hours; (2) after the steeped material is activated under the high temperature of 500 DEG C to 850 DEG C (potassium hydroxide is within a range from 800 DEG C to 850 DEG C; and phosphoric acid or zinc chloride is within a range from 500 DEG C to 600 DEG C, not under inert gas shielding ) for 30 to 90 minutes, an activated fish scale material is prepared; (3) the obtained activated scale material is washed with water (the activator is recovered) to be almost neutral (pH value is 6 to 8), and after drying, the finished scale carbon adsorption material is prepared; (4) the specific surface area of the prepared fish scale carbon adsorption material reaches 530m<2> / g to 992m<2> / g, and the methylene blue adsorption value is 128mg / g to 227mg / g. According to the invention, the carbon adsorption material which is prepared with the fish scales as raw materials can replace a variety of applications of active carbon for adsorption, helps realizinge the utilization of fish scale waste as a resource, and helps save resources such as timers, coal and coconut shells.

Description

technical field [0001] The invention relates to a method for preparing carbon adsorption materials from fish scales, in particular to the fact that fish scale wastes are large in amount, pollute the environment and are difficult to handle. 3 PO 4 or ZnCl 2 ) uniformly mixed (the mass ratio of activator to fish scale is 1.5-3:1) and impregnated for 10-24 hours; the above-mentioned impregnated materials are in the range of 500°C to 850°C (potassium hydroxide is in the range of 800°C to 850°C; phosphoric acid Or zinc chloride (500°C-600°C, without inert gas protection) high-temperature activation for 30-90 minutes to prepare the fish scale activation material; wash the obtained activation material with water (recover the activator) to near neutrality (pH value 6- 8), drying and making the finished fish scale carbon adsorption material. The carbon adsorption material prepared by using fish scales as raw materials in the present invention can replace activated carbon for various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20C02F1/28B01J20/30C02F101/20C02F101/30
CPCB01J20/02B01J20/0244B01J20/0288B01J20/041B01J20/20C02F1/281C02F1/283C02F2101/20C02F2101/308
Inventor 李海朝祝永强王广乐徐贵钰王冲石成龙
Owner QINGHAI UNIV FOR NATITIES
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