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Method used for activation preparation of high adsorptivity active carbon from Aspergillus niger bacterial sludge

A technology of Aspergillus niger and activated carbon, which is applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve problems such as the inability to make good use of residual value and environmental hazards, and achieve good economic benefits, reduce pollution, and run continuous effect

Inactive Publication Date: 2019-08-09
浙江清风源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Composting is harmful to the surrounding environment and use as animal feed does not make good use of the residual value of the material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of method utilizing aspergillus niger bacterium slime to prepare activated carbon with high adsorption performance, it comprises the steps:

[0039] (1) Drying treatment: Dry the Aspergillus niger sludge, control the drying temperature at 100°C, and stay for 24 hours; the moisture content of the dried sludge is 18% for subsequent carbonization treatment;

[0040] (2) Carbonization treatment: After drying, the dried bacteria slime is carbonized, and undergoes cracking, dehydrogenation, and reduction reactions to produce biochar;

[0041] (3) Activation treatment: After the biochar is produced, soak it in KOH solution at room temperature for 1.8~2.5h, after drying, enter the activation furnace for activation. The temperature of the activation furnace is 800°C, and the residence time is 60min. Activated to make the final product activated carbon;

[0042] (4) Cooling treatment: After the activated carbon product is produced, the temperature is similar to the origin...

Embodiment 2

[0044] A kind of method utilizing aspergillus niger bacterium slime to prepare activated carbon with high adsorption performance, it comprises the steps:

[0045] (1) Drying treatment: Dry the Aspergillus niger sludge, control the drying temperature at 90°C, and stay for 21 hours; the moisture content of the dried sludge is 20% for subsequent carbonization treatment;

[0046] (2) Carbonization treatment: After drying, the dried bacteria slime is carbonized, and undergoes cracking, dehydrogenation, and reduction reactions to produce biochar;

[0047] (3) Activation treatment: After the biochar is produced, soak it in KOH solution for 1.8 hours at room temperature, and after drying, enter the activation furnace for activation. The temperature of the activation furnace is 700°C, and the residence time is 50 minutes. Make the final product activated carbon;

[0048] (4) Cooling treatment: After the activated carbon product is produced, the temperature is similar to the original f...

Embodiment 3

[0050] A kind of method utilizing aspergillus niger bacterium slime to prepare activated carbon with high adsorption performance, it comprises the steps:

[0051] (1) Drying treatment: Dry the Aspergillus niger sludge, control the drying temperature at 110°C, and stay for 26 hours; the moisture content of the dried sludge is 13% for subsequent carbonization treatment;

[0052] (2) Carbonization treatment: After drying, the dried bacteria slime is carbonized, and undergoes cracking, dehydrogenation, and reduction reactions to produce biochar;

[0053](3) Activation treatment: After the biochar is produced, soak it in KOH solution at room temperature for 2.5 hours, and after drying, enter the activation furnace for activation. The temperature of the activation furnace is 850 ° C, and the residence time is 70 minutes. Make the final product activated carbon;

[0054] (4) Cooling treatment: After the activated carbon product is produced, the temperature is similar to the original...

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Abstract

The invention discloses a method used for activation preparation of high adsorptivity active carbon from Aspergillus niger bacterial sludge. The method comprises following steps: 1, anhydration treatment, wherein Aspergillus niger bacterial sludge is subjected to anhydration until the water content ranges from 13 to 21%, so that it is convenient for subsequent charing treatment; 2, charing treatment, wherein after anhydration, the obtained dried bacterial sludge is subjected to charing treatment through cracking, dehydrogenation, and reduction reaction to produce biochar; 3, activation treatment, wherein the obtained biochar is immersed in a KOH solution at normal temperature for a certain period of time, is dried, and is introduced into an activation furnace for activation, the biochar inthe carbonization furnace is subjected to activation so as to obtain finished product active carbon; and 4, cooling treatment, wherein the temperature of the finished product active carbon is close to that of the furnace, spiral water cooling equipment is adopted for cooling of the finished product active carbon, and product collecting is carried out. The method is low in pollution; continuous operation can be realized; product resource utilization can be realized; and excellent economical benefit, social benefit, and environment benefit can be achieved.

Description

technical field [0001] The invention relates to the field of modification and activation of biochar, in particular to a method for activating activated carbon with high adsorption performance prepared by using Aspergillus niger sludge. Background technique [0002] Activated carbon is a kind of black porous solid carbon, which is produced from coal by crushing, molding or carbonization and activation with uniform coal particles. The main component is carbon, which contains a small amount of oxygen, hydrogen, sulfur, nitrogen, chlorine and other elements. The traditional raw materials for the preparation of activated carbon are coal and coconut shell. The specific surface area of ​​coal-based activated carbon is 600-1200m² / g, and the specific surface area of ​​coconut shell-based activated carbon is 1000-1600m² / g. Due to its strong adsorption performance, it can be It is widely used as industrial adsorbent. However, the disadvantage of this method of preparing activated car...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348
CPCC01B32/318C01B32/348
Inventor 郑志永颜威张福鑫李峰叶元
Owner 浙江清风源环保科技有限公司
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