Method for preparing carbon nanofiber aerogel oil absorption material from bacterial cellulose

A technology of bacterial cellulose and carbon nanofibers, applied in microorganism-based methods, biochemical equipment and methods, chemical characteristics of fibers, etc., can solve problems such as human interference and economic losses in aquatic ecosystems, and achieve good selective oil absorption performance. , The effect of high absorption efficiency and regular microstructure

Active Publication Date: 2014-08-06
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
At present, there is no report on the use of bacterial cellulose aerogels as oil-absorbing materials at home and abroad.

Method used

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Experimental program
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Effect test

specific Embodiment approach 1

[0026] 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 is used as an oil-absorbing material for marine oil spills, and the specific operation steps are as follows:

[0027] 1. Bacterial cellulose cultivation

[0028] (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 2g, 100ml deionized water, the above is the optimal ratio but can also be fine-tuned, 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 prevent Acetobacter xylinum fro...

specific Embodiment approach 2

[0037] Specific implementation mode 2: In this implementation mode, carbon nanofiber (CNF) airgel oil-absorbing material is prepared according to the following steps:

[0038] 1. Bacterial cellulose cultivation

[0039] (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.

[0040] (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, and cultured st...

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Abstract

The invention relates to a method for preparing an oil absorption material, in particular to a method for preparing a carbon nanofiber aerogel oil absorption material from bacterial cellulose. According to the method, bacterial cellulose aerogel is modified to obtain the carbon nanofiber aerogel oil absorption material. The method comprises the following steps: culturing the bacterial cellulose; preparing the bacterial cellulose aerogel; and preparing the carbon nanofiber aerogel oil absorption material. The method for preparing the carbon nanofiber aerogel from the bacterial cellulose is simple, novel in design, high in environment-friendly biocompatibility and high in absorption efficiency, and the oil absorption material can be recycled for many times. The hydrophobic carbon nanofiber aerogel prepared by the process can widely absorb multiple organic solvents and oil products, and is high in recyclability and selectivity; the absorption rate is up to 50-300 times the self-weight of the hydrophobic carbon nanofiber aerogel.

Description

technical field [0001] The invention relates to a method for preparing an oil-absorbing material, in particular to a method for preparing a carbon nanofiber airgel oil-absorbing material by using bacterial cellulose. 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 serious. 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 pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/14C09K3/32C12P19/04C12R1/01
Inventor 刘宇艳刘振国王永臻王友善
Owner HARBIN INST OF TECH
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