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Regeneration method of waste active carbon for monosodium glutamate by supersonic wave and spray

Active Publication Date: 2016-02-03
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its industrial consumption is very large, and if it is not treated effectively after use, it will easily cause serious pollution to the surrounding environment

Method used

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  • Regeneration method of waste active carbon for monosodium glutamate by supersonic wave and spray
  • Regeneration method of waste active carbon for monosodium glutamate by supersonic wave and spray
  • Regeneration method of waste active carbon for monosodium glutamate by supersonic wave and spray

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The method for ultrasonic spraying to regenerate activated carbon for waste monosodium glutamate, the specific steps are as follows: 10g of activated carbon for waste monosodium glutamate is dried at a temperature of 105±0.5°C for 1.5h, cooled to room temperature and placed in a microwave oven with a stirrer (controlled stirring The speed is 160rpm), when the temperature rises to 700°C, turn on the ultrasonic spray device and adjust the flow rate of water mist at room temperature to 1ml / min, turn off the microwave oven after 10 minutes, and pass in nitrogen gas (the flow rate of nitrogen gas is 200ml / min) until it cools down to room temperature , to obtain activated carbon for regeneration of waste monosodium glutamate.

[0021] The methylene blue value of the activated carbon for regenerating waste monosodium glutamate obtained through the above steps is 169.5 mg / g, and the regeneration yield is 65.36%.

[0022] The adsorption isotherms at 77K of the activated carbon f...

Embodiment 2

[0024] The method for the ultrasonic spray regeneration of waste monosodium glutamate activated carbon, its specific steps are as follows: 10g of waste monosodium glutamate with activated carbon (the specific surface area of ​​waste monosodium glutamate with activated carbon is 318.2m 2 / g, the value of methylene blue is 30mg / g) at a temperature of 105±0.5°C for 1.5h, cooled to room temperature and placed in a microwave oven with a stirrer (control the stirring speed at 180rpm), when the temperature rises to 750°C Turn on the ultrasonic spray device and adjust the flow rate of water mist at room temperature to 1.5ml / min, turn off the microwave oven after 15 minutes, and pass in nitrogen gas (the flow rate of nitrogen gas is 350ml / min) until it cools to room temperature to obtain activated carbon for recycling waste monosodium glutamate.

[0025] The methylene blue value of the activated carbon for regenerating waste monosodium glutamate obtained through the above steps is 174mg...

Embodiment 3

[0027] The method for the ultrasonic spray regeneration of waste monosodium glutamate activated carbon, its specific steps are as follows: 10g of waste monosodium glutamate with activated carbon (the specific surface area of ​​waste monosodium glutamate with activated carbon is 318.2m 2 / g, methylene blue value is 45mg / g) at a temperature of 105±0.5°C for 1.5h, cooled to room temperature and placed in a microwave oven with a stirrer (control the stirring speed at 210rpm), when the temperature rises to 800°C Turn on the ultrasonic spray device and adjust the flow rate of water mist at room temperature to 2ml / min, turn off the microwave oven after 10 minutes, and pass in nitrogen gas (the flow rate of nitrogen gas is 400ml / min) until it cools to room temperature to obtain activated carbon for recycling waste monosodium glutamate.

[0028] The methylene blue value of the activated carbon for regenerating waste monosodium glutamate obtained through the above steps is 184.5 mg / g, an...

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Abstract

The invention relates to a regeneration method of waste active carbon for monosodium glutamate by supersonic wave and spray, and belongs to the field of a comprehensive utilization technology of resources. Waste active carbon for monosodium glutamate is dried at 105+-0.5 DEG C for 1.5 hours and is cooled to room temperature, the waste active carbon is placed in a microwave oven with a stirrer, when the temperature rises to 700-800 DEG C, a supersonic wave spraying apparatus is started, the normal temperature spray flow velocity is adjusted to 1-3ml / min, after 5-20 minutes of spraying, the microwave oven is closed, nitrogen is used for cooling to room temperature, and the waste active carbon for monosodium glutamate is regenerated. The waste active carbon for monosodium glutamate is used as a raw material, and spray generated by supersonic wave is used with the microwave oven, and the regeneration effect of the active carbon is greatly improved.

Description

technical field [0001] The invention relates to a method for regenerating activated carbon for waste monosodium glutamate by ultrasonic spraying, and belongs to the technical field of comprehensive utilization of resources. Background technique [0002] Activated carbon has been widely used in chemical, pharmaceutical, environmental protection and other fields due to its huge specific surface area, developed pore structure and strong adsorption capacity. With the development of human society, the consumption of activated carbon is increasing, and it is of great significance to find suitable process conditions to realize the recycling of activated carbon and improve its resource utilization efficiency. The main process of activated carbon for monosodium glutamate is acid pretreatment, drying and forming, carbonization, activation, recovery of activator, rinsing, drying, and grinding to obtain activated carbon. Activated carbon for monosodium glutamate is dark black in appear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/10C01B32/336
Inventor 夏洪应程松张利波彭金辉王仕兴马爱元张声洲
Owner KUNMING UNIV OF SCI & TECH
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