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Wooden sponge oil-absorbing material and preparation method thereof

An oil-absorbing material and sponge technology, which is applied in wood treatment, wood impregnation, separation methods, etc., can solve the problems of poor mechanical properties of cellulose aerogel, unfavorable oil-absorbing material reuse, complicated raw material preparation process, etc., and achieves the reuse performance. Good, good promotion and application prospect, simple and easy preparation method

Inactive Publication Date: 2019-04-12
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the raw material preparation process is complicated and the cost is high
In addition, due to its disordered three-dimensional network structure, cellulose aerogels have poor mechanical properties, are easily damaged by external forces, and have poor structural stability. Therefore, it is usually necessary to recover the adsorbed oil by extraction or distillation, which not only increases Reduce the cost of recycling and easily cause environmental pollution, which is not conducive to the repeated use of oil-absorbing materials

Method used

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  • Wooden sponge oil-absorbing material and preparation method thereof
  • Wooden sponge oil-absorbing material and preparation method thereof
  • Wooden sponge oil-absorbing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A kind of wooden sponge oil-absorbing material

[0029] Put the block wood with a size of 1.50mm×1.5mm×1.5mm into a hydrogen peroxide solution with a concentration of 30%, and heat it at 60°C for 8 hours to obtain bleached wood;

[0030] Sodium chlorite (NaClO) with a concentration of 2% 2 ) solution, and adjust the pH value to 4.0 with phosphoric acid, immerse the above-mentioned bleached wood in an acidic sodium chlorite solution, and cook at 80°C for 3 hours to remove the lignin component in the wood cell wall; the above-mentioned delignified wood Put it into 8% sodium hydroxide solution, and treat it at 80°C for 8 hours to further remove hemicellulose.

[0031] After the above-mentioned treated wood was washed with distilled water several times, it was frozen in a refrigerator for 8 hours, and then moved to a vacuum freeze dryer for freeze-drying for 30 hours. The temperature of the cold trap was minus 40°C, and the vacuum was 5Pa. The prepared woode...

Embodiment 2

[0036]Embodiment 2: a kind of preparation method of wooden sponge oil-absorbing material, the steps are:

[0037] (1) Wood bleaching: use balsa wood as a raw material, process it into block or flake samples, put it into a hydrogen peroxide solution, and heat it;

[0038] (2) Remove lignin: immerse the above-mentioned bleached wood in acidic sodium chlorite solution and cook for 5 hours;

[0039] (3) Hemicellulose removal: put the above-mentioned delignified wood into sodium hydroxide solution, and treat it at 55°C for 8 hours;

[0040] (4) freeze-drying: the timber after step (3) is processed, puts into freeze-drying 25 hours in the vacuum freeze-drying machine after washing with water;

[0041] (5) Silanization treatment: put the container containing methyltrichlorosilane into the bottom of the airtight container, put the material obtained in step (4) into the airtight container, heat to 80°C for silanization modification, and the treatment time is 3 hours , that is.

Embodiment 3

[0042] Embodiment 3: a kind of preparation method of wooden sponge oil-absorbing material, the steps are:

[0043] (1) Wood bleaching: use balsa wood as a raw material, process it into block or flake samples, put it into a hydrogen peroxide solution, and heat it;

[0044] (2) Removal of lignin: immerse the above-mentioned bleached wood in an acidic sodium chlorite solution and cook for 4 hours;

[0045] (3) Hemicellulose removal: put the above-mentioned delignified wood into sodium hydroxide solution, and treat it at 50-85° C. for 7 hours;

[0046] (4) freeze-drying: the wood after step (3) is processed, puts into vacuum freeze-drying machine freeze-drying 24 hours after water washing;

[0047] (5) Silanization treatment: put the container containing methyltrichlorosilane into the bottom of the airtight container, put the material obtained in step (4) into the airtight container, heat to 90°C for silanization modification, and the treatment time is 1 hour , that is;

[0048...

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Abstract

The invention discloses a wooden sponge oil-absorbing material. The wooden sponge oil-absorbing material is obtained by performing wood bleaching by using light wood as a raw material, removing lignin, removing hemicellulose, performing freeze drying and performing silanization treatment. The invention also discloses a preparation method of the wooden sponge oil-absorbing material. The preparationmethod provided by the invention creatively uses the natural renewable wood as the raw material for the first time to prepare the porous oil-absorbing material through a top-down strategy, is economical, high-efficient, green, environmentally friendly, simple in preparation process, and wide in raw material source, can be produced in a large scale, and has good promotion and application prospects.

Description

technical field [0001] The invention belongs to the technical field of oil-absorbing materials; more specifically, it relates to a wooden sponge oil-absorbing material and a preparation method thereof. Background technique: [0002] With the massive discharge of oily sewage in production and life and the frequent occurrence of offshore oil spill accidents, oil pollution in water has become a major problem that endangers human health and environmental safety. How to achieve efficient oil-water separation has become an urgent problem to be solved. At present, the traditional oil pollution treatment methods mainly include the following: (1) direct combustion method; (2) physical mechanical method, such as deploying oil booms and oil skimmers; (3) chemical treatment method, such as adding oil coagulant and dispersants, etc., to change the physical and chemical properties of oil stains; (4) bioremediation, that is, to use certain microorganisms to decompose oil stains. All of t...

Claims

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Application Information

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IPC IPC(8): C08J9/26C08J9/36C08L1/02B01D17/02B27K5/00B27K5/04B27K3/02
CPCB01D17/0202B27K3/025B27K5/0005B27K5/04C08J9/26C08J9/365C08J2301/02
Inventor 王小青管浩刘君良倪林程志泳孟军旺
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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