Method for preparing seaweed cellulose aerogel oil absorption material

A technology of seaweed cellulose and oil-absorbing materials, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of human interference in aquatic ecosystems, secondary pollution of chemical methods, slow cycle of biological methods, etc., and achieve excellent recyclability. and selectivity, regular structure, good lipophilic effect

Active Publication Date: 2014-08-13
HARBIN INST OF TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

The nearly three-month oil spill not only caused huge economic losses, but also brought persistent and severe pressure on the environment, causing serious human disturbance to aquatic ecosystems
At present, the treatment methods of oil spill accidents mainly include physical, biological and chemical methods, among which the biological method is slower, the cycle is longer and the efficiency is low, and the chemical method will cause secondary pollution. Physical adsorption method is a better method to deal with marine oil spills
However, most of the oil-absorbing materials currently in the society have the disadvantages of low oil-absorbing efficiency, the oil-absorbing material itself is also a source of pollution, secondary treatment is inconvenient, and the cost is high.

Method used

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Effect test

specific Embodiment approach 1

[0026] Embodiment 1: This embodiment provides a preparation method of seaweed cellulose airgel oil-absorbing material. Firstly, Enteromorpha is collected from the No. 1 Bathing Beach in Qingdao City. After removing the miscellaneous algae, it is washed repeatedly with sea water. After drying, it is mechanically crushed, passed through a 60-mesh sieve, and stored for later use. Then it was extracted and purified with a Soxhlet extractor, and the cellulose hydrogel was prepared with a mechanical film, and the cellulose aerogel was prepared with a freeze-drying method. The specific operation steps are as follows:

[0027] Step 1. Purification of seaweed cellulose

[0028] First, purify seaweed cellulose: accurately weigh 2 g of dried Enteromorpha, put it in a Soxhlet extractor, and extract it in 50 mL of ethyl acetate-ethanol solution with a volume ratio of 2:1 at 90°C 8h, remove the lipid extract. Secondly, polysaccharides were extracted with sodium carbonate solution at ...

specific Embodiment approach 2

[0036] Specific embodiment two: In this embodiment, the seaweed cellulose airgel oil-absorbing material is prepared according to the following steps:

[0037] Step 1. Purification of seaweed cellulose

[0038] First, purify seaweed cellulose: Accurately weigh 2 g of dried Enteromorpha, place it in a Soxhlet extractor, and extract it in 30 mL of ethyl acetate-ethanol solution with a volume ratio of 2:1 at 90°C 8h, remove the lipid extract. Secondly, polysaccharides were extracted with sodium carbonate solution at 60°C, and Enteromorpha residue was obtained after filtration. Subsequently, sodium chlorite was oxidized under acidic conditions (pH=4~5, adjusted by glacial acetic acid) for 1 h, and the sample after oxidative bleaching was treated with potassium hydroxide for 5 min to remove protein and remaining polysaccharides. Finally, use dilute hydrochloric acid at 80°C to remove inorganic salts such as calcium salts to obtain purified seaweed cellulose.

[0039] Step 2...

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Abstract

The invention discloses a method for preparing a seaweed cellulose aerogel oil absorption material and relates to a method for preparing an oil absorption material. The method comprises the following steps: I, purifying seaweed cellulose; II, preparing seaweed nano cellulose microfibril in a mechanical colloid milling mode; III, preparing seaweed cellulose aerogel; and IV, performing hydrophobic modification on the seaweed cellulose aerogel. The seaweed cellulose aerogel oil absorption material prepared by using the method is natural and pollution-free and has the advantages of high oil absorption efficiency, , good strength, simple secondary treatment and the like, and is an important development direction of novel aerogel oil absorption materials.

Description

technical field [0001] The invention relates to a preparation method of an oil-absorbing material, in particular to a preparation method of a seaweed 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 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 were missing. It was not until July 15, 2010 that BP announced that the new oil control device had successfully covered the underwater oil spill point,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/40C08J9/28C08L1/02C09K3/32
Inventor 刘宇艳刘振国王永臻谢志民
Owner HARBIN INST OF TECH
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