A kind of hydrophobic lignin/cellulose airgel oil-water separation material and its preparation method and application

An aerogel oil and separation material technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve problems such as environmental pollution, lack of use of lignin value, etc., achieve environmental friendliness, promote development and application, improve The effect of oil absorption

Active Publication Date: 2022-03-25
图们市华威友邦化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Lignin is a natural macromolecule second only to cellulose in nature. Every year, industrial lignin, a by-product of the paper industry in my country, is piled up as waste or directly incinerated to obtain a low calorific value. The value of its own, there is also the problem of environmental pollution, researchers are committed to the efficient use of lignin, but the application of lignin in cellulose aerogels is rarely reported

Method used

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  • A kind of hydrophobic lignin/cellulose airgel oil-water separation material and its preparation method and application
  • A kind of hydrophobic lignin/cellulose airgel oil-water separation material and its preparation method and application
  • A kind of hydrophobic lignin/cellulose airgel oil-water separation material and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 5 to 10% by weight of the NaOH solution was prepared from 10 to 20 parts of solvent, and 2 hydroxyethylcellulose were added, 1 hydroxyethyl cellulose, 1 part of the base, and stirred at room temperature to obtain a homogeneous lignin / cellulose composite solution. 1 part of epoxy chloropropane was added at room temperature for cross-linking reaction, and the mixture was placed in a mold at room temperature for 24 h to form lignin / cellulose composite hydrogel. The hydrogel was then placed in anhydrous ethanol solution for 24 h, and then placed in a solvent in deionized water for 2 days, freeze-dried 36 h to obtain a lignin / cellulose composite gas gel at -40 ° C. The preparative lignin / cellulose composite gas gel is cut into 3 cm × 3 cm × 3 cm block, and the airgel and 1 ml of open vials with methyltrimethoxysilane are placed in a closed container at 70 ° C oven. 12h to obtain hydrophobic modified lignin / cellulose composite gas gel oil absorbing materials.

[0036] 0...

Embodiment 2

[0038] 5 ~ 10% by weight of the NaOH solution was prepared from 10 to 20 parts of solvent, 2 parts of hydroxyethyl cellulose, 3 parts of alkalin, and stirred at room temperature for 5 hours to obtain a uniform lignin / cellulose composite solution. 1 part of epoxy chloropropane was added at room temperature for cross-linking reaction, and the mixture was placed in a mold at room temperature for 24 h to form lignin / cellulose composite hydrogel. The hydrogel was then placed in anhydrous ethanol solution for 24 h, and then placed in a solvent in deionized water for 2 days, freeze-dried 36 h to obtain a lignin / cellulose composite gas gel at -40 ° C. The prepared lignin / cellulose composite gas gel is cut into 3 cm × 3 cm × 3 cm block, and the airgel and 1 ml of methyltrimethoxysilane are placed in a closed container at 70 ° C oven at 70 ° C. To obtain hydrophobic modified lignin / cellulose composite gas gel oil absorbing materials.

[0039] The prepared gas gel oil was placed in...

Embodiment 3

[0041]5 to 10% by weight of the NaOH solution was prepared from 10 to 20 parts of solvent, and 2 hydroxyethylcellulose were added, 10 parts of alkali lignin, and stirred at room temperature for 5 h to obtain a uniform lignin / cellulose composite solution. 1 part of epoxy chloropropane was added at room temperature for cross-linking reaction, and the mixture was placed in a mold at room temperature for 24 h to form lignin / cellulose composite hydrogel. The hydrogel was then placed in anhydrous ethanol solution for 24 h, and then placed in a solvent in deionized water for 2 days, freeze-dried 36 h to obtain a lignin / cellulose composite gas gel at -40 ° C. The prepared lignin / cellulose composite gas gel is cut into 3 cm × 3 cm × 3 cm block, and the airgel and 1 ml of methyltrimethoxysilane are placed in a closed container at 70 ° C oven at 70 ° C. To obtain hydrophobic modified lignin / cellulose composite gas gel oil absorbing materials.

[0042] 0.5 g of the prepared gas gel ...

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Abstract

The invention belongs to the technical field of environmental protection materials, and specifically discloses a hydrophobic lignin / cellulose airgel oil-water separation material and a preparation method and application thereof. The preparation method comprises the following steps: adding lignin and cellulose to an alkaline solution to obtain a lignin / cellulose mixed solution; adding a crosslinking agent to obtain a lignin / cellulose composite hydrogel; solvent exchange and drying The elastic airgel is obtained, and then the elastic airgel is hydrophobically modified by a chemical vapor deposition method using a silane coupling agent to obtain a hydrophobic lignin / cellulose airgel. The lignin / cellulose airgel oil-absorbing material prepared before and after hydrophobic modification has a highly porous network structure, and the prepared oil-absorbing material is placed in an oil-water mixture, and the absorption rate is as high as 10 to 25 times its own weight. After the oil is absorbed, the oil can be extruded by extrusion, and the oil-absorbing material can be regenerated, and the recycling still has a high oil-absorbing efficiency.

Description

Technical field [0001] The present invention belongs to the technical field of environmentally friendly materials, and in particular, the present invention relates to a hydrophobic ferrotin / cellulose gas gel oil water separation material and a preparation method thereof. Background technique [0002] With the increase in the development of the world economy and the level of human living, the oil demand is increasing, oil-in-oil accidents during oil transportation and mining have occurred frequently, which has caused great damage to the marine aquatic environment. At the same time, the industrial wastewater pollution situation in my country's oil-containing or non-polar organic solvent is not optimistic, and has seriously threatened the surrounding ecological environment and human health, so effective to solve the problem of oil pollution has become an urgent and arduous task. . At present, the main treatment of oil-containing wastewater is to separate and collect these organic ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/28C08J3/24C08L1/28C08L97/00B01D17/022
CPCC08J9/28C08J3/246B01D17/0202C08J2301/28C08J2497/00C08J2397/00C08J2401/28C08J2201/0484
Inventor 郑大锋胡玲邱学青孙兰
Owner 图们市华威友邦化工有限公司
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