Method for preparing biomass hydrothermal carbon through glucose-Fenton linkage system

A glucose aqueous solution and biomass technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as environmental pollution and resource waste, and achieve the effects of alleviating environmental pollution, reducing preparation costs, and uniform concentration dispersion.

Pending Publication Date: 2022-02-01
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few researchers have explored how to increase the yield of hydrothermal carbon produced by biomass hydrothermal carbonization.
[0003] Grapefruit is one of the main fruits in my country. The waste of grapefruit peel is about 600,000 tons per year, which will cause serious environmental pollution and waste of resources if not properly disposed of.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In this example, grapefruit peels are used as raw materials, and a high-yield grapefruit peel hydrothermal carbon is prepared by using a glucose-Fenton linkage system. The specific steps of the preparation method are as follows:

[0025] 1) Fresh grapefruit removes the pulp and outer skin, and cuts into pieces of suitable size, and mixes it with an aqueous glucose solution with a concentration of 100g / L to form a solid-liquid mixture of grapefruit peel and glucose aqueous solution. The grapefruit in the solid-liquid mixture is mixed with The content of glucose aqueous solution is to mix 10L glucose aqueous solution for every 1kg of grapefruit peel, and then add Fe 2+ and H 2 o 2 Fenton's reagent with a mass fraction ratio of 1:3, Fenton's reagent is used as a functional agent, and the addition amount is 4mg / L. Fe in Fenton's reagent 2+ Formulated with ferrous sulfate, H 2 o 2 Prepared with 30% hydrogen peroxide.

[0026] 2) Transfer the solid-liquid mixture obtain...

Embodiment 2

[0030] In this example, grapefruit peels are used as raw materials, and a high-yield grapefruit peel hydrothermal carbon is prepared by using a glucose-Fenton linkage system. The specific steps of the preparation method are as follows:

[0031] 1) Fresh pomelo is removed from the pulp and outer skin, and cut into pieces of suitable size; mixed with an aqueous glucose solution with a concentration of 80g / L to form a solid-liquid mixture of pomelo peel and aqueous glucose solution, pomelo in the solid-liquid mixture and The content of glucose aqueous solution is to mix 15L glucose aqueous solution for every 1kg of grapefruit peel, and then add Fe 2+ and H 2 o 2 Fenton's reagent with a mass fraction ratio of 1:5, Fenton's reagent is used as a functional agent, and the addition amount is 3mg / L. Fe in Fenton's reagent 2+ Formulated with ferrous sulfate, H 2 o 2 Prepared with 30% hydrogen peroxide.

[0032] 2) Move the solid-liquid mixture obtained in step 1 into a high-pressu...

Embodiment 3

[0036] In this example, grapefruit peels are used as raw materials, and a high-yield grapefruit peel hydrothermal carbon is prepared by using a glucose-Fenton linkage system. The specific steps of the preparation method are as follows:

[0037] 1) Remove the pulp and outer skin of fresh pomelo, cut into pieces of suitable size, mix with glucose aqueous solution with a concentration of 50g / L to form a solid-liquid mixture of pomelo peel and glucose aqueous solution, pomelo in the solid-liquid mixture and The content of glucose aqueous solution is to mix 20L glucose aqueous solution with every 1kg of grapefruit peel, and then add Fe 2+ and H 2 o 2 Fenton's reagent with a mass fraction ratio of 1:1, Fenton's reagent is used as a functional agent, and the addition amount is 2mg / L. Fe in Fenton's reagent 2+ Formulated with ferrous sulfate, H 2 o 2 Prepared with 30% hydrogen peroxide.

[0038] 2) Move the solid-liquid mixture obtained in step 1 into a high-pressure reactor, an...

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Abstract

The invention discloses a method for preparing biomass hydrothermal carbon by a glucose-Fenton linkage system, which comprises the following steps: S1, mixing biomass and a glucose aqueous solution to form a solid-liquid mixture, and adding a Fenton reagent as a functional agent according to 1-4mg / L; s2, transferring the solid-liquid mixture in the step S1 into a high-pressure hydrothermal reaction kettle, carrying out hydrothermal reaction at 160-240 DEG C for 8-24 hours, and cooling, filtering, washing and drying the reaction product to obtain high-yield biomass hydrothermal carbon; s3, stirring and activating the hydrothermal carbon obtained in the step S2 in an alkali solution, and filtering and washing the solution to obtain the high-yield functionalized biomass hydrothermal carbon. According to the invention, cheap and renewable biomass, such as pomelo peel, is used as a carbon source, a hydrothermal carbonization reaction is carried out through a glucose-Fenton linkage system, and high-yield hydrothermal carbon is prepared. The hydrothermal carbon is good in pore structure, and the surface of the hydrothermal carbon contains a large number of oxygen-containing active sites.

Description

technical field [0001] The invention belongs to the technical field of preparation of hydrothermal carbon materials, and relates to a method for preparing biomass hydrothermal carbon by a glucose-Fenton linkage system. Background technique [0002] In recent years, the hydrothermal carbonization of biomass to produce carbon materials has attracted widespread attention due to its low price and renewable raw materials. Through the method of hydrothermal carbonization, there are many studies on the application of various biomass to produce hydrothermal carbon. However, the yield of hydrothermal carbon obtained directly from biomass hydrothermal carbonization is relatively small, and the functionalization effect is relatively poor. It is necessary to find a simple and effective method to improve the yield and functionalization of hydrothermal carbon. Most studies have regulated the structure and function of hydrothermal carbons by adding functional reagents, for example, by add...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20B01J2220/4887
Inventor 徐嘉赛刘玉新孙兵梁磊
Owner KUNMING UNIV OF SCI & TECH
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