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Biological carbon prepared form grapefruit skin, preparation method and application thereof

A technology of pomelo peel and biochar, which is applied in the field of agricultural chemistry, can solve the problems of being thrown away, or being dried, burned, wasting renewable resources, affecting the ecological environment, etc., to achieve large specific surface area, strong adsorption capacity, and reduce Effects of Environmental Pollution

Active Publication Date: 2016-10-12
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a part of pomelo, pomelo peel is thrown away, dried or burned every time after eating pomelo, which is very easy to cause environmental pollution
This not only seriously affects the ecological environment, increases carbon emissions, but also wastes available renewable resources

Method used

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  • Biological carbon prepared form grapefruit skin, preparation method and application thereof
  • Biological carbon prepared form grapefruit skin, preparation method and application thereof
  • Biological carbon prepared form grapefruit skin, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] After the pomelo peel waste is pulverized, select 60 mesh particles, according to the ratio of 1g: 12ml, 5g of pomelo peel biomass and 60ml concentration of 10% phosphoric acid aqueous solution are stirred evenly, sealed in the autoclave, Under the condition that the heating rate of the electric furnace is 10-20°C / min, conduct hydrothermal carbonization at 180°C for 10 hours, wash with deionized water until neutral after natural cooling, filter with suction, dry at 70°C for 10 hours, and grind to obtain pomelo peel biochar material. The SEM image of the prepared biochar is shown in figure 1 . The prepared biochar has a sheet structure with a thickness of only 300-500nm.

Embodiment 2

[0041] After the pomelo peel waste is pulverized, select 60 mesh particles, according to the ratio of 1g: 12ml, 5g of pomelo peel biomass and 60ml concentration of 20% phosphoric acid aqueous solution are stirred evenly, sealed in the autoclave, Under the condition that the heating rate of the electric furnace is 10-20°C / min, conduct hydrothermal carbonization at 180°C for 10 hours, wash with deionized water until neutral after natural cooling, filter with suction, dry at 70°C for 10 hours, and grind to obtain pomelo peel biochar material. The prepared biochar has a sheet-like and spherical mixed structure, and the thickness of the sheet-like structure product is only 200-500nm. The SEM image of the prepared biochar is shown in figure 2 .

Embodiment 3

[0043] After the pomelo peel waste is pulverized, select 60 mesh particles, according to the ratio of 1g: 12ml, 5g of pomelo peel biomass and 60ml concentration of 30% phosphoric acid aqueous solution are stirred evenly, sealed in the autoclave, Under the condition that the heating rate of the electric furnace is 10-20°C / min, conduct hydrothermal carbonization at 180°C for 10 hours, wash with deionized water until neutral after natural cooling, filter with suction, dry at 70°C for 10 hours, and grind to obtain pomelo peel biochar material. The SEM image of the prepared biochar is shown in image 3 . The prepared biochar has a sheet-like and spherical mixed structure, and the thickness of the sheet-like structure product is only 300-500nm.

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Abstract

The invention discloses a preparation method of biological carbon by using grapefruit skin. The method is as below: drying and pulverizing grapefruit skin, and mixing the grapefruit skin with an aqueous solution of catalyst, and conducting a hydrothermal carbonization reaction; after the hydrothermal carbonization reaction, washing and drying to obtain the biological carbon. The temperature of the hydrothermal carbonization reaction is 160 DEG to 260 DEG C; the catalyst is at least one selected from phosphoric acid, sulfuric acid, hydrochloric acid, acetic acid, citric acid, acrylic acid, sodium polyacrylate, sodium polystyrene sulfonate, zinc chloride, and stannic chloride. In addition, the invention also comprises the biological carbon which is prepared by the method and the application of the biological carbon in the adsorption of heavy metals. The biological carbon material obtained by the invention has the advantages of microsphere particle shape, uniform particle size and high adsorption capacity, and can be applied to the field of adsorption and remediation of heavy metal pollutants or organic pollutants.

Description

technical field [0001] The invention relates to the field of agricultural chemistry, in particular to biochar prepared from pomelo peel, a preparation method and application thereof. Background technique [0002] In recent years, the situation of heavy metal pollution has become increasingly severe, especially the pollution in soil and water bodies, which endangers the safe production and utilization of food and poses a serious threat to human survival and development. The preparation of functional activated carbon from biomass raw materials can be used to control and remediate heavy metal pollution. [0003] As a small evergreen shrub, the pomelo tree has delicious fruit with medicinal value and a huge output. The domestic annual output is about 20 million tons. Grapefruit is a very important southern fruit, produced in southern regions such as Fujian, Jiangxi, Guangdong, and Guangxi in my country. Grapefruit is fragrant, sweet and sour, cool, rich in business, and has hi...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F1/62
CPCB01J20/20B01J2220/4806B01J2220/4812B01J2220/4825B01J2220/4837C02F1/283C02F2101/20
Inventor 周南周智姚登辉
Owner HUNAN AGRICULTURAL UNIV
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