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Method for preparing bagasse biomass charcoal

A technology of biochar and bagasse, which is applied in the direction of chemical instruments and methods, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of poor adsorption performance of bagasse biochar, and achieve improved wetting and Encapsulation performance, improvement of adsorption, avoidance of porosity and specific surface area decrease

Inactive Publication Date: 2018-04-20
常州琨瑶纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is: Aiming at the problem of poor adsorption performance of traditional bagasse biochar, a preparation method of bagasse biochar is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Move the bagasse into the steam-explosion tank, and feed steam into the steam-explosion tank at a rate of 60mL / min until the pressure inside the tank is 2.4MPa. After the pressure-holding treatment for 25 minutes, open the valve at the bottom of the tank instantly, and discharge the material to obtain steam-explosion treatment. Bagasse: Mix steamed and exploded bagasse with mixed enzyme liquid in a fermentation tank at a mass ratio of 1:8, and enzymolyze it at 38°C for 10 hours to obtain enzymatically hydrolyzed bagasse, then move the enzymatically hydrolyzed bagasse into a drying oven, Dry to constant weight at 95°C to obtain pretreated bagasse; mix pretreated bagasse and tetraethyl orthosilicate in a beaker at a mass ratio of 1:15, mix and soak for 150 minutes at a temperature of 60°C , filtered to obtain a filter cake, mixed the filter cake with a saturated borax solution at a temperature of 60°C at a mass ratio of 1:13, soaked in heat for 30 minutes, cooled to 35°C, ...

example 2

[0020]Move the bagasse into the steam-explosion tank, and feed steam into the steam-explosion tank at a rate of 60mL / min until the pressure inside the tank is 2.4MPa. After the pressure-holding treatment for 25 minutes, open the valve at the bottom of the tank instantly, and discharge the material to obtain steam-explosion treatment. Bagasse: Mix steamed and exploded bagasse with mixed enzyme liquid in a fermentation tank at a mass ratio of 1:8, and enzymolyze it at 38°C for 10 hours to obtain enzymatically hydrolyzed bagasse, then move the enzymatically hydrolyzed bagasse into a drying oven, Dry to constant weight at 95°C to obtain pretreated bagasse; mix pretreated bagasse with saturated borax solution at 60°C at a mass ratio of 1:13, soak in heat for 30 minutes, cool down to 35°C, and continue soaking After 2 hours, filter to obtain filter residue, move the filter residue into a drying oven, and dry at a temperature of 95°C for 50 minutes to obtain modified bagasse; mix the ...

example 3

[0022] Move the bagasse into the steam-explosion tank, and feed steam into the steam-explosion tank at a rate of 60mL / min until the pressure inside the tank is 2.4MPa. After the pressure-holding treatment for 25 minutes, open the valve at the bottom of the tank instantly, and discharge the material to obtain steam-explosion treatment. Bagasse: Mix steamed and exploded bagasse with mixed enzyme liquid in a fermentation tank at a mass ratio of 1:8, and enzymolyze it at 38°C for 10 hours to obtain enzymatically hydrolyzed bagasse, then move the enzymatically hydrolyzed bagasse into a drying oven, Dry to constant weight at 95°C to obtain pretreated bagasse; mix pretreated bagasse and tetraethyl orthosilicate in a beaker at a mass ratio of 1:15, mix and soak for 150 minutes at a temperature of 60°C , filter to obtain a filter cake, move the filter cake into a drying oven, and dry it for 50 minutes at a temperature of 95°C to obtain a modified bagasse; mix the modified bagasse with a...

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Abstract

The invention discloses a method for preparing bagasse biomass charcoal and belongs to the technical field of adsorption materials. The method comprises carrying out steam explosion on bagasse to obtain bagasse subjected by steam explosion, mixing the bagasse subjected by steam explosion and a mixed enzyme liquid so that the bagasse is subjected to enzymolysis, drying the bagasse subjected to enzymolysis until constant weight, mixing the pretreated bagasse and tetraethoxysilane so that the pretreated bagasse is immersed, filtering the pretreated bagasse to obtain filter cake, mixing the filtercake and a saturated borax solution so that the filter cake is immersed, carrying out filtration and drying to obtain modified bagasse, mixing the modified bagasse and a phosphoric acid solution, adding a water-retaining agent into the mixed solution, carrying out immersion and filtration to obtain a blank, pre-carbonizing the blank in a nitrogen protective atmosphere at 300-350 DEG C for 2-3h, carbonizing the blank at 550-700 DEG C for 3-4h, discharging the blank, crushing the blank, and carrying out screening to obtain the bagasse biomass charcoal. The bagasse biomass charcoal has a high specific surface area and good adsorption performances.

Description

technical field [0001] The invention discloses a preparation method of bagasse biochar, which belongs to the technical field of adsorption materials. Background technique [0002] Biochar refers to a highly aromatic, carbon-rich porous solid granular material produced by high-temperature pyrolysis of carbon-rich biomass under anaerobic or anoxic conditions. It contains a large amount of carbon and plant nutrients, has a rich pore structure, a large specific surface area and contains more oxygen-containing active groups on the surface, and is a multifunctional material. It can not only improve soil, increase fertility, absorb heavy metals and organic pollutants in soil or sewage, but also has a good fixation effect on carbon and nitrogen. When applied to soil, it can reduce CO 2 , N 2 O, CH 4 Emissions of greenhouse gases and slow down global warming. Biochar belongs to the category of black carbon, which is a highly aromatized refractory solid substance produced by carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30
CPCB01J20/20B01J20/103B01J20/28011B01J20/28054
Inventor 李璐徐颜峰张琳
Owner 常州琨瑶纺织品有限公司
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