Method for preparing bagasse carbon material by hydrothermal method and application thereof

A technology of bagasse carbon and hydrothermal method, which is applied in the fields of application, carbon preparation/purification, chemical instruments and methods, etc., can solve the problems of strong corrosion, difficult waste acid treatment, etc., and achieve environmental protection, no pollution in the process, material easy effect

Inactive Publication Date: 2017-06-30
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method uses high-concentration strong acid, which has a strong corrosive effect on equipment, and it is difficult to treat waste acid in the later stage.

Method used

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  • Method for preparing bagasse carbon material by hydrothermal method and application thereof
  • Method for preparing bagasse carbon material by hydrothermal method and application thereof
  • Method for preparing bagasse carbon material by hydrothermal method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The waste bagasse is cut into small sections less than 10 cm in length, dried and crushed to obtain bagasse powder. Pass the bagasse powder through a 90-mesh sieve, mix it evenly with distilled water at a mass ratio of 1:19, and carry out hydrothermal carbonization reaction in a hydrothermal reaction kettle. The hydrothermal carbonization temperature is 240°C and the time is 10h. After the reaction, the solid was obtained by suction filtration and washed with distilled water several times. The washed solids are collected, dried and ground, and passed through a 90-mesh sieve to obtain hydrothermal carbon materials.

Embodiment 2

[0025] The waste bagasse is cut into small sections less than 10 cm in length, dried and crushed to obtain bagasse powder. Pass the bagasse powder through a 90-mesh sieve, mix it evenly with 1.0v% acrylic acid according to the ratio of solid-liquid mass ratio of 1:19, and carry out hydrothermal carbonization reaction in a hydrothermal reaction kettle. The hydrothermal carbonization temperature is 240°C, and the time is It is 10h. After the reaction, the solid was obtained by suction filtration and washed with distilled water several times. The washed solids are collected, dried and ground, and passed through a 90-mesh sieve to obtain hydrothermal carbon materials.

Embodiment 3

[0027] The waste bagasse is cut into small sections less than 10 cm in length, dried and crushed to obtain bagasse powder. Pass the bagasse powder through a 90-mesh sieve, mix evenly with 40wt% phosphoric acid according to the solid-to-liquid mass ratio of 1:19, and carry out hydrothermal carbonization reaction in a hydrothermal reaction kettle. The hydrothermal carbonization temperature is 260°C, and the time is 12h. After the reaction, wash with hot distilled water several times until neutral. The washed solids are collected, dried and ground, and passed through a 90-mesh sieve to obtain hydrothermal carbon materials.

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Abstract

The invention relates to the field of preparing carbon materials by using bagasse and its application. The residual bagasse after juicing is collected and cleaned, dried, pulverized and sieved, then hydrothermally carbonized, and then carbonized in a hydrothermal medium with oxyacids added, washed and dried to obtain multifunctional and efficient adsorption Carbon material - bagasse hydrothermal carbon. The preparation process has easy-to-obtain raw materials, low cost, simple operation, and environmental friendliness; the surface of the prepared carbon material is loose and porous, rich in oxygen-containing functional groups or has a large specific surface area, and can be used in wastewater containing dyes and heavy metals or in the sugar industry The high-efficiency treatment of the decolorization of medium sugar liquid has realized the greening of the sugar making process, and has good economic, social and environmental benefits.

Description

technical field [0001] The invention relates to the field of carbon materials prepared from waste biomass, in particular to a method and application of a bagasse carbon material prepared by a hydrothermal method. Background technique [0002] China is the third largest sugarcane planting country in the world. Sugarcane is one of the main crops in southern my country and is mainly used in the sugar industry. Nearly a quarter of sugarcane juice forms bagasse. In recent years, the annual output of sucrose in my country has been around 10-11 million tons, resulting in a large amount of bagasse by-products. At present, bagasse is mainly used in combustion for energy supply, papermaking, etc., and its comprehensive utilization rate of resources is low, and about 7 million tons of unused bagasse are discarded in the field or incinerated, causing serious damage. Environmental pollution and great waste of natural biomass resources. Therefore, the effective use of bagasse as a raw m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C13B20/12C02F1/28C02F101/20C02F101/30C02F103/30
CPCC13B20/123C01P2004/03C02F1/281C02F2101/20C02F2101/308C02F2103/30
Inventor 甘林火沈天若朱俊东李娜柯朝静吕丽舒汇琳
Owner HUAQIAO UNIVERSITY
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