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Method for preparing high-oil-absorption material from sawdust

A technology of high oil absorption and wood chips, applied in the field of oil-absorbing materials, can solve the problems of poor product quality, low product substitution, and restricting the high value-added utilization of fast-growing eucalyptus wood chips.

Inactive Publication Date: 2015-02-04
YULIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, fast-growing eucalyptus wood chips are mainly composed of cellulose, hemicellulose and lignin, of which the mass of cellulose accounts for about 30%, which is lower than that of other fiber resources such as bagasse, and cellulose has two structures, crystalline and amorphous. The chemical reactivity is very low, and chemical reagents are not easy to enter the interior to react. If the acetylation reaction is carried out directly with wood chips, not only the product substitution degree is low, but also the reaction time is long, and the product quality is not good, which greatly limits the high added value of fast-growing eucalyptus wood chips. use

Method used

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  • Method for preparing high-oil-absorption material from sawdust
  • Method for preparing high-oil-absorption material from sawdust

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Put 50g of fast-growing eucalyptus sawdust crushed to 30 meshes into the grinding cylinder of the stirring mill, and grind together with the ball milling medium at a temperature of 50°C to obtain activated sawdust fibers; wherein, the ball milling medium is a 5mm diameter zirconia ball, and the ball milling The volume of the medium stack is 500mL, the rotation speed of the stirring paddle is 400 rpm, and the grinding time is 1 hour;

[0023] Mix 10.00 g of the activated sawdust fiber obtained in step with 50 mL of glacial acetic acid and 60 mL of acetic anhydride, then add 0.5 g of p-toluenesulfonic acid to form a mixed reaction product, the mass volume ratio of wood chips and liquid is 1:11 (g:mL); Stir the mixed reactant formed in step at a temperature of 60°C for 1 hour, then cool to room temperature to obtain a paste mixture;

[0024] Centrifuge the pasty mixture obtained in step at a speed of 3000 rpm, discard the precipitate, add 8 times the volume of deioni...

Embodiment 2

[0027] Put 50g of fast-growing eucalyptus wood chips crushed to 40 meshes into the grinding cylinder of the stirring mill, and grind together with the ball milling medium at a temperature of 50°C to obtain activated sawdust fibers; wherein, the ball milling medium is a zirconia ball with a diameter of 6mm, and the ball milling The volume of the medium stack is 500mL, the rotation speed of the stirring paddle is 375 rpm, and the grinding time is 1.5 hours;

[0028] Mix 10.00 g of activated sawdust fibers obtained in step with 70 mL of glacial acetic acid and 60 mL of acetic anhydride, then add 0.6 g of p-toluenesulfonic acid to form a mixed reaction product, and the mass volume ratio of wood chips to liquid is 1:13 (g:mL); Stir the mixed reactant formed in step at a temperature of 70°C for 2 hours, then cool to room temperature to obtain a paste mixture;

[0029] Centrifuge the pasty mixture obtained in step at a speed of 3000 rpm, discard the precipitate, add 8 times the ...

Embodiment 3

[0032] Put 50g of fast-growing eucalyptus sawdust crushed to 50 meshes into the grinding cylinder of the stirring mill, and grind together with the ball milling medium at a temperature of 50°C to obtain activated sawdust fibers; wherein, the ball milling medium is a zirconia ball with a diameter of 6 mm, and the ball milling The volume of the medium stack is 400mL, the rotation speed of the stirring paddle is 400 rpm, and the grinding time is 1 hour;

[0033] Mix 10.00 g of activated sawdust fibers obtained in step with 60 mL of glacial acetic acid and 50 mL of acetic anhydride, then add 0.7 g of p-toluenesulfonic acid to form a mixed reaction product, and the mass volume ratio of wood chips to liquid is 1:13 (g:mL); Stir the mixed reactant formed in step at a temperature of 80°C for 2 hours, then cool to room temperature to obtain a paste mixture;

[0034] Centrifuge the pasty mixture obtained in step at a speed of 3000 rpm, discard the precipitate, add 9 times the volu...

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Abstract

The invention discloses a method for preparing a high-oil-absorption material from sawdust. Fast-growing eucalyptus sawdust is used as a raw material. After activation pretreatment is carried out on sawdust fiber by the use of a stirred mil, p-methylbenzene sulfonic acid is used as a catalyst to carry out acetylization so as to obtain the sawdust high-oil-absorption material. The method is simple to operate and has a wide source of the raw material. So far, the used fast-growing eucalyptus sawdust has already been distributed in quantity in a number of provinces and cities of our country. Thus, production cost of the product can be reduced, and recycling and environmental protection of the raw material are realized. The oil-absorption material obtained can absorb multiple oils, has characteristics of high oil absorption multiple, fast oil absorption speed, good oil-water selectivity, high oil retention, reusability and the like, and can widely be used in processing pollution of oils on water surface and recycling oils in sewage.

Description

technical field [0001] The invention belongs to the field of oil-absorbing materials, in particular to a method for preparing high-oil-absorbing materials from sawdust. Background technique [0002] With the development of industry and the improvement of people's living standards, the environmental pollution caused by the discharge of oily waste water and waste gas and the increase in leakage accidents of oil tankers and oil tanks has become increasingly serious, which has already constituted a threat to the ocean and people's lives. As a new type of functional polymer material, super oil-absorbing resin material is different from ordinary oil-absorbing materials in the past. It can not only achieve the purpose of high-efficiency oil absorption, but also has the characteristics of various types of oil absorption, fast oil absorption rate, high oil absorption ratio, oil absorption but not water absorption, etc. Not only can it replace traditional oil-absorbing materials, but ...

Claims

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Application Information

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IPC IPC(8): C08B3/06C08B1/02C09K3/32
Inventor 陈渊罗志辉韦庆敏杨家添谢秋季茆岳雷
Owner YULIN NORMAL UNIVERSITY
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