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Preparation method of magnetic bacteria cellulose aerogel oil absorption material

A technology of cellulose airgel and bacterial cellulose, applied in chemical instruments and methods, other chemical processes, fermentation, etc., can solve the problems of human interference, collection difficulties, economic losses and other problems in aquatic ecosystems, and achieve excellent recyclability and selectivity, high oil absorption efficiency, and regular microstructure

Active Publication Date: 2014-09-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On May 5, 2010, the crude oil spill in the Gulf of Mexico in the United States attracted great attention from the international community. An oil drilling platform on the coast of Louisiana in the southern United States caught fire and exploded at around 10 pm local time on April 20, 2010, causing 7 serious injuries. , at least 11 people are missing, and the nearly 3-month oil spill not only caused huge economic losses, but also brought lasting and serious pressure to the environment, causing serious human disturbance to aquatic ecosystems
[0005] However, when pure bacterial cellulose airgel absorbs oil spills, it is difficult to collect due to dispersion, so it can only be salvaged by machinery, which is time-consuming and laborious.

Method used

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specific Embodiment approach 1

[0029] Specific Embodiment 1: In this embodiment, bacterial cellulose airgel is prepared by dissolving bacterial cellulose microfibrils to form bacterial cellulose hydrogel, and then the bacterial cellulose airgel is modified to produce ultra-light, refractory carbon Nanofiber (CNF) airgel, and finally magnetically modify the CNF airgel by hydrothermal method, so as to be used as an oil-absorbing material for marine oil spills, the specific operation steps are as follows:

[0030] 1. Bacterial cellulose cultivation

[0031] (1) Kombucha liquid subculture medium: the medium is composed of agar, the carbon source is glucose, the nitrogen source is yeast powder and tryptone; the ratio is glucose 5g, yeast powder 1g, agar 2g, CaCO 3 2 g, 100 ml deionized water, and adjust the pH of the medium to 6.8. Scrub the large-mouth glass bottle twice with alcohol, and then boil it in boiling water for two minutes to remove as much bacteria and cleaning agent alcohol as possible to pr...

specific Embodiment approach 2

[0042] Specific implementation mode 2: In this implementation mode, magnetic carbon nanofiber (CNF) airgel oil-absorbing material is prepared according to the following steps:

[0043] 1. Bacterial cellulose cultivation

[0044] (1) Kombucha liquid subculture medium: the medium is composed of agar, the carbon source is glucose, the nitrogen source is yeast powder and tryptone; the ratio is glucose 5g, yeast powder 1g, agar 2g, CaCO 3 2 g, 100 ml of deionized water, and adjust the pH of the medium to 7.0. Scrub the large-mouth glass bottle twice with alcohol, and then boil it in boiling water for two minutes to remove as much bacteria and cleaning agent alcohol as possible to prevent Acetobacter xylinum from being polluted.

[0045] (2) Kombucha was subcultured with bacterial liquid, and an appropriate amount of bacterial liquid was taken from the kombucha liquid (purchased from Yijun Shijia), and inoculated into 100mL fermentation medium with a 20% inoculation amount...

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Abstract

A preparation method of a magnetic bacteria cellulose aerogel oil absorption material, and relates to a method for preparing an oil absorption material. The aim of the invention is to provide the preparation method of the magnetic bacteria cellulose aerogel oil absorption material. A bacterial cellulose aerogel is modified into a carbon nanometer fiber aerogel oil absorption material, and magnetic particles are added to the prepared aerogel, so that magnetic substances can be conveniently used for salvage and recovery after oil absorption and are beneficial to collecting. The method comprises the steps as follows: 1, cultivation of bacterial cellulose; 2, preparation of bacterial cellulose aerogel; 3, preparation of the carbon nano fiber aerogel absorption material; and 4, preparation of the magnetic carbon nanofiber aerogel oil absorption material. The invention prepares magnetic carbon nanofiber aerogel from bacterial cellulose, the preparation method is simple, novel in design and environment-friendly, and has good biocompatibility, high absorption efficiency and convenience for fishing, and can be reused for many times.

Description

technical field [0001] The invention relates to a preparation method of an oil-absorbing material, in particular to a preparation method of a magnetic bacterial cellulose airgel oil-absorbing material. Background technique [0002] In recent years, with the increasing development of offshore oil resources, oil spill accidents have been increasing. Similar oil spills happen every year in the world. With the acceleration of industrial society, my country's oil pollution is becoming more and more severe. On May 5, 2010, the crude oil spill in the Gulf of Mexico in the United States attracted great attention from the international community. An oil drilling platform on the coast of Louisiana in the southern United States caught fire and exploded at around 10 pm local time on April 20, 2010, causing 7 serious injuries. , At least 11 people are missing. The nearly three-month oil spill not only caused huge economic losses, but also brought lasting and serious pressure to the envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/36C08J9/28C09K3/32C12P19/04
Inventor 刘宇艳刘振国王永臻王友善
Owner HARBIN INST OF TECH
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