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Method for preparing aquatic animal activated carbon by hydrothermal method

A technology of activated carbon and hydrothermal method, which is applied in the field of activated carbon, can solve the lagging problems of aquatic product processing and comprehensive utilization, and achieve the effects of increasing industrial economic benefits, realizing resource utilization, and improving adsorption effect

Inactive Publication Date: 2020-04-24
SHANDONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the output of aquatic products in my country is huge, but the processing and comprehensive utilization of aquatic products are relatively lagging behind.

Method used

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  • Method for preparing aquatic animal activated carbon by hydrothermal method
  • Method for preparing aquatic animal activated carbon by hydrothermal method

Examples

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Effect test

no. 1 example

[0030] Activated carbon is prepared by using shrimp shells, crab shells, and processed waste from aquaculture shrimp and crabs as animal materials, including the following steps:

[0031] 1. After rinsing with tap water, use deionized water to further rinse waste such as shrimp and crab shells. After cleaning the surface impurities, put them into a grinder while adding a small amount of liquid nitrogen to crush and grind. Among them, the larger crab shells are first cleaned with hard The tools are initially crushed into small pieces and then crushed and ground. The maximum particle size after treatment is not more than 0.3mm.

[0032] 2. Using citric acid as the pore-forming activator, prepare an aqueous solution of citric acid with a mass concentration of 7.5%, mix the ground animal material and the pore-forming activator at a ratio of 1:3, stir evenly and let stand for 25 minutes. Then put it into a closed high-pressure reactor, control the temperature at 180° C., and carry...

no. 2 example

[0035] Adopting fish bone as animal matter material to prepare activated carbon comprises the following steps:

[0036] 1. After rinsing with tap water, use deionized water to further rinse the fish bones. After cleaning the surface impurities, place them in a low-temperature freezer at -10°C for 2 hours, take out the cut pieces, and put them into a pulverizer for crushing. The particles are not larger than 0.2 mm, and a paste biomass is obtained.

[0037] 2. Using acetic acid as the pore-forming activator, it is configured into an aqueous solution of acetic acid with a mass concentration of 5%. The pasty biomass in step (1) is mixed with the pore-forming activator according to the ratio of mass ratio 1:1.5, and the mixture is stirred evenly and left to stand. Set it aside for 20 minutes, then put it into a closed high-pressure reactor, control the temperature at 200°C, and carry out hydrothermal carbonization with a reaction time of 10 hours.

[0038] 3. After the reaction, ...

no. 3 example

[0040] The preparation of activated carbon by using fish scales, fish viscera or waste fish offal processed in aquaculture as animal matter materials includes the following steps:

[0041] 1. After rinsing with tap water, use deionized water to further rinse fish scales, fish viscera, and fish offal. After cleaning the surface impurities, put them into a meat grinder and grind them. The maximum particle size after grinding is not greater than 0.1mm.

[0042] 2. Using ammonium bicarbonate as the pore-forming activator, prepare an aqueous solution of ammonium bicarbonate with a mass concentration of 7.5%, mix the ground animal material with the pore-forming activating solution at a ratio of 1:2, stir well and then let stand After 20 minutes, put it into a closed high-pressure reactor, control the temperature at 220°C, and carry out hydrothermal carbonization with a reaction time of 8 hours.

[0043]4. After the reaction is over, let the reaction kettle cool down to room temperat...

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Abstract

The invention relates to the technical field of activated carbon, in particular to a method for preparing aquatic animal activated carbon by a hydrothermal method, which comprises the following stepsof: 1) pretreating aquatic animal wastes, and crushing to obtain pasty biomass, and 2) uniformly mixing the pasty biomass with a pore-forming activator, standing, carrying out hydrothermal carbonization treatment, taking out the obtained activated carbon after the reaction is finished, cleaning, and drying to obtain the activated carbon. The activated carbon product is prepared by taking aquatic animal wastes as raw materials; according to the method, the activated carbon with good performance is prepared, resource utilization of waste biomass is achieved, compared with plant biomass, the specific tissue component characteristics of the aquatic animal are utilized, the pore-forming active agent is selectively added, a reaction product can be optimized, and generation of high-quality activated carbon with high porosity and a good adsorption effect is facilitated; and the prepared activated carbon product has rich oxygen-containing and nitrogen-containing functional groups, such as carbonyl, carboxyl and the like, thereby being beneficial to enhancing the pollutant adsorption effect.

Description

technical field [0001] The invention relates to the technical field of activated carbon, in particular to a method for preparing activated carbon from aquatic animal matter by a hydrothermal method. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Activated carbon has the advantages of developed pores and good adsorption performance, and is widely used in sewage treatment, air purification and other fields. At present, the preparation of biomass activated carbon mostly adopts the pyrolysis carbonization method. In addition to the pyrolysis carbonization method, the hydrothermal method can also prepare high-performance biomass activated carbon. Hydrothermal c...

Claims

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Application Information

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IPC IPC(8): C01B32/324C01B32/342C01B32/348
CPCC01B32/324C01B32/342C01B32/348
Inventor 赵聪聪张海东孔强王倩杜远达徐飞
Owner SHANDONG NORMAL UNIV
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