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Preparation method of carbon airgel adsorbent for oil pollution treatment and prepared carbon airgel adsorbent

A carbon aerogel and carbon hydrogel technology, which is applied in adsorption water/sewage treatment, separation methods, other chemical processes, etc., can solve the problems of high requirements for synthesis conditions, complex synthesis methods, and expensive raw materials, and achieves low cost. , high specific surface area, no effect of environmental pollution

Inactive Publication Date: 2016-11-30
CHANGZHOU HIGH TECH RES INST OF NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the synthesis method of this scheme is complicated, the requirements for synthesis conditions are high, and the price of raw materials is relatively expensive.

Method used

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  • Preparation method of carbon airgel adsorbent for oil pollution treatment and prepared carbon airgel adsorbent
  • Preparation method of carbon airgel adsorbent for oil pollution treatment and prepared carbon airgel adsorbent
  • Preparation method of carbon airgel adsorbent for oil pollution treatment and prepared carbon airgel adsorbent

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Experimental program
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Effect test

Embodiment 1

[0025] Cut the melon raw material into a suitable shape and put it in a polytetrafluoroethylene hydrothermal reactor. Place it in a homogeneous reactor for 12 hours at 180℃ for hydrothermal reaction. After the reaction is complete, it is slowly cooled to room temperature. Washing and ethanol washing; get carbohydrate gel. The carbon hydrogel wrapped in tin foil was quickly frozen in liquid nitrogen at 77K, and dried in a vacuum drying oven at a constant temperature of 25°C for 12 hours to finally obtain a black sponge-like melon carbon aerogel material.

Embodiment 2

[0027] Cut the watermelon flesh raw material into a suitable shape and put it in a polytetrafluoroethylene hydrothermal reaction kettle, hydrothermally react at 180°C for 12 hours, slowly cool to room temperature after the reaction is complete, and finally undergo repeated water washing and ethanol washing; tin foil paper The wrapped carbon hydrogel was quickly frozen in liquid nitrogen at 77K, and dried in a vacuum drying oven at a constant temperature of 25°C for 12 hours to finally obtain a black sponge-like watermelon flesh carbon aerogel material.

Embodiment 3

[0029] Cut the raw material of loofah into a suitable shape and put it in a polytetrafluoroethylene hydrothermal reactor. Place it in a homogeneous reactor for 12 hours at 180℃ for hydrothermal reaction. After the reaction is completed, slowly cool to room temperature. Finally, it is repeated Washing with water and ethanol; after being rapidly frozen under liquid nitrogen at 77K, dried in a vacuum drying oven at a constant temperature of 25°C for 12 hours to finally obtain a black sponge-like loofah carbon aerogel material.

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Abstract

A method for preparing a carbon airgel material, which is to cut biomass melon, watermelon pulp or loofah and place it in a hydrothermal reaction kettle, and conduct a hydrothermal reaction in a homogeneous reactor at 180°C for 12 hours under airtight conditions After the reaction was completed, it was gradually cooled to room temperature, and then washed. The washed carbon hydrogel was placed in an oven at 60°C for 1 hour, wrapped with a layer of tin foil, and completely freeze-dried in a 77K liquid nitrogen tank. The obtained solid product was Put it in a vacuum drying oven at 25°C for 12 hours, and slowly extract the solid moisture to obtain a carbon airgel material. The carbon airgel material of the invention has high specific surface area, high mechanical strength, and ultra-low bulk density.

Description

Technical field: [0001] The invention relates to a production method of a high-efficiency green carbon material, in particular to a preparation method and a product of a carbon material adsorbent using biomass as a raw material. Background technique: [0002] Because there are various water pollution in both inland rivers and the ocean, among them, oil pollution is the most common type of water pollution. The output of industrial oily sewage is large and covers a wide range. For example, oily sewage is generated in the processes of oil extraction, petroleum refining, petrochemical, oil storage and transportation, oil tanker accidents, ship shipping, vehicle cleaning, machinery manufacturing, and food processing. As a common pollution, oil pollution causes great harm to aquatic resources, human health, and hydraulic construction. The common methods of today's oil-water separation technology are: gravity separation, air flotation, coarse-graining, filtration, adsorption and other ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/40
Inventor 庄韦周满陈强赵亚丽何臻
Owner CHANGZHOU HIGH TECH RES INST OF NANJING UNIV
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