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Natural oil adsorbing material made of maize straw

A technology of corn stalks and oil-absorbing materials, which is applied in other chemical processes, chemical instruments and methods, etc., can solve the problems of low oil absorption rate, non-biodegradable, high cost of biodegradation, etc., and achieve good regeneration effect and high oil absorption rate.

Inactive Publication Date: 2015-12-09
CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: organic synthetic materials are the most common practical application among all oil-absorbing materials at present. Such materials have low oil-absorbing ratio, are not biodegradable, or have high cost of biodegradation, and poor regeneration effect, etc., provide A natural oil-absorbing material made of corn stalks was developed. The material uses corn stalks as raw material, and extracts the cellulose in the straw with sodium hydroxide and sodium hypochlorite, and then chemically modifies it with acetic anhydride to realize the conversion of acetyl groups. Substitution of hydroxyl groups improves the lipophilic groups on the surface of cellulose and makes natural oil-absorbing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 3

[0022] Take 2kg of corn stalks and put them into a straw cutting machine, cut them into 20cm long pieces and soak them in boiling water at 100°C for 24 hours, and after natural air-drying, use a roller rolling machine to roll them 7 times to make corn stalk husk fibers and corn stalks The core is separated, the corn stalk husk fiber is taken out, and washed with plasma water; the corn stalk husk fiber is squeezed 7 times with a mechanical extruder, rinsed with deionized water, and the residual glue on the fiber is removed, and then methyl silicone oil is added , the corn stalk fiber is submerged, soaked at 80°C for 50min, softened, then dried at room temperature to obtain corn stalk fiber; the dried corn stalk fiber is put into 500mL volume ratio of 2: 1 of toluene and absolute ethanol mixed solution for 12 hours, filtered out, and rinsed with absolute ethanol for 5 times; put the washed corn stalk fibers into deionized water, treated in a water bath at 80°C for 2 hours, and fi...

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Abstract

The invention relates to a natural oil adsorbing material made of maize straw, and belongs to the field of novel material preparing. The natural oil adsorbing material is characterized in that the maize straw serves as raw materials, cellulose in the straw is extracted through sodium hydroxide and sodium hypochlorite and then chemically modified through acetic anhydride, hydroxide radical is replaced by acetyl, lipophilic groups on the surfaces of the cellulose are increased, and the natural oil adsorbing material is prepared. The preparing materials come from pure natural plants and can be biodegraded, the material prepared after modification is high in oil adsorption rate and good in regeneration effect, and the adsorption effect is still remarkable after the material is repeatedly used five to six times.

Description

technical field [0001] The invention relates to a natural oil-absorbing material made of corn stalks, which belongs to the field of novel material preparation. Background technique [0002] With the continuous development of world industry, the discharge of oil pollution is increasing day by day, and there are more and more ways and opportunities for oil leakage, especially large-scale oil leakage accidents caused by maritime shipping. Traditional oil-absorbing materials such as cotton, sponge, clay, etc. cannot meet the current needs in terms of output and performance. According to different sources of preparation materials, oil-absorbing materials can be divided into naturally occurring organic oil-absorbing materials, organic oil-absorbing materials through chemical synthesis, and powdered inorganic materials. At present, the most common practical application is organic synthetic materials. This type of material has the following advantages , including: fast oil absorpti...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30
Inventor 雷春生林大伟
Owner CHANGZHOU DINGRI ENVIRONMENTAL PROTECTION TECH
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