Preparation method of active carbon with high specific surface area made from bamboo wood

A high specific surface area, activated carbon technology, applied in the field of comprehensive utilization of resources, can solve the problems of unreasonable utilization of waste bamboo, waste of natural resources, pollution of the environment, etc., and achieve the goal of improving comprehensive utilization, fast adsorption speed and high adsorption capacity Effect

Inactive Publication Date: 2015-05-27
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In most bamboo factories, waste bamboo is always not used rationally, or it rots by itself, or it is only used a

Method used

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  • Preparation method of active carbon with high specific surface area made from bamboo wood
  • Preparation method of active carbon with high specific surface area made from bamboo wood
  • Preparation method of active carbon with high specific surface area made from bamboo wood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First, clean and remove impurities from the waste bamboo, dry it naturally, put it into a crucible, put it in a high-temperature resistance furnace to raise the temperature to 600°C at 15°C / min, keep it warm for carbonization for 40min, and take it out to obtain the carbonized material after cooling to room temperature with the furnace, and then Crush it to 100-200 mesh as the activation raw material, dry it and package it for later use; mix KOH and carbonized material at a mass ratio of 2.5:1 for solid phase mixing and evenly put it into a ceramic crucible and put it into a microwave device, and pass it into the furnace Nitrogen was used for 2 min to evacuate the air in the furnace, and the microwave power was 10 kW for 8 min; in the last 5 min of heating, CO was quickly blown into the tube connected to the bottom of the ceramic crucible. 2 , and turn on the 300W ultrasonic generator at the same time, after heating, transfer the material to a beaker equipped with tap wa...

Embodiment 2

[0035] First, clean and remove impurities from the waste bamboo, dry it naturally, put it into a crucible, put it in a high-temperature resistance furnace to raise the temperature to 400°C at 5°C / min, keep it warm for 60 minutes, and take it out to obtain the carbonized material after cooling to room temperature with the furnace. It is pulverized to 100-200 meshes as an activation raw material, dried and packaged for later use. Mix KOH and carbonized material in a solid phase at a mass ratio of 2.0:1 and put them into a ceramic crucible and put them into a microwave device. Nitrogen gas was introduced into the furnace for 2 min to evacuate the air in the furnace. Under the condition of microwave power 5 kW Heating at low temperature for 10 minutes, in the last 4 minutes of heating, quickly blow CO2 through the tube connected to the bottom of the ceramic crucible 2 , and open the 600W ultrasonic generator at the same time, after heating, the material is transferred to a beaker ...

Embodiment 3

[0038] First, clean and remove impurities from the waste bamboo, dry it naturally, put it into a crucible, put it in a high-temperature resistance furnace to raise the temperature to 500°C at 10°C / min, keep it warm for carbonization for 50 minutes, and take it out to obtain the carbonized material after cooling to room temperature with the furnace, and then Grind it to 100-200 mesh as the activation raw material, dry it and package it for later use; mix KOH and carbonized material in a solid phase with a mass ratio of 3.0:1 and evenly put it into a ceramic crucible and put it into a microwave device, and pass it into the furnace Nitrogen was used for 2 minutes to evacuate the air in the furnace, and heated for 12 minutes under the condition of microwave power 8 kW. In the last 7 minutes of heating, CO was quickly blown into the tube connected to the bottom of the ceramic crucible. 2 , and open the 500W ultrasonic generator at the same time, after heating, the material is transf...

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Abstract

The invention discloses a preparation method of active carbon with a high specific surface area made from bamboo wood, and belongs to the technical field of resource comprehensive utilization. The method comprises the steps that the abandoned bamboo wood is cleaned, aired, carbonized, then subjected to furnace cooling, broken into certain granularity, dried, and packaged for use; KOH and a carbonized material are mixed uniformly, put in a ceramic crucible and placed in a microwave device; nitrogen is introduced to a furnace to exhaust air in the furnace; heating with microwaves is performed; in the last few minutes of the heating, CO2 is blown in quickly through a conduit communicated with the bottom of the ceramic crucible, and an ultrasonic generator is started simultaneously; after the heating, water washing with tap water is performed and residual KOH is recovered; washing is performed repeatedly with an appropriate amount of hydrochloric acid; cleansing with the tap water and drying are performed; and the active carbon with the high specific surface area made from the bamboo wood is obtained. The active carbon produced by the method is high in specific surface area, high in adsorption capacity, and lower in ash content, has well-developed pores, and can be applied in the medical fields of blood purification, dialysate regeneration and the like after appropriate disinfection and refining.

Description

technical field [0001] The invention relates to a method for preparing activated carbon with high specific surface area of ​​bamboo, and belongs to the technical field of comprehensive utilization of resources. Background technique [0002] As a porous material with excellent performance, activated carbon is widely used in many industrial fields, such as gas / liquid phase separation / purification, wastewater treatment, catalyst carrier, supercapacitor, energy storage, etc. With the development of human society, the application range of activated carbon is becoming wider and wider, and the demand is also increasing. [0003] In recent years, with the in-depth implementation of the scientific development concept, people's environmental protection concept and resource crisis awareness have become stronger and stronger. Scientific and technological personnel take into account the two aspects of environmental protection and economic benefits, and the research on the preparation of...

Claims

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Application Information

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IPC IPC(8): C01B31/12B09B3/00
CPCY02W30/78
Inventor 张利波张声洲夏洪应彭金辉王仕兴刘秉国许磊周朝金
Owner KUNMING UNIV OF SCI & TECH
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