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Method for preparing oil absorption material by adopting straws as base materials

An oil-absorbing material and substrate technology, applied in chemical instruments and methods, adsorption water/sewage treatment, alkali metal oxides/hydroxides, etc. Short pretreatment time and other problems, to achieve the effect of low density, good oil retention effect, and improved oil absorption performance

Inactive Publication Date: 2012-02-08
DALIAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method has simple process, mild reaction conditions, short pretreatment time, and the substrate used is agricultural solid waste straw, which can not only "turn waste into treasure" and achieve the purpose of resource recycling, but also has high oil absorption performance, The density is low, and it can float on the water for a long time for oil recovery; the obtained product not only has the biodegradability of straw, but also has the high oil absorption performance of lipophilic monomers, thus solving the problem that the previous synthetic oil absorption materials cannot have high oil absorption performance at the same time. Difficulties with biodegradability

Method used

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  • Method for preparing oil absorption material by adopting straws as base materials
  • Method for preparing oil absorption material by adopting straws as base materials
  • Method for preparing oil absorption material by adopting straws as base materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Peel off the outer skin of 50 g of corn stalks, wash, dry, pulverize and sieve with a universal grinder to make straw fragments. Put straw fragments into a 500mL three-necked flask, add 150mL of 10w% sodium hydroxide solution, heat and stir, cook and react at 85°C for 3h, neutralize with 9.5w% hydrochloric acid to pH 7, wash with water three times, filter , dried to constant weight to obtain straw powder, and set aside;

[0055] (2) Weigh 3g of the treated straw powder, add 120mL of deionized water and stir to make it uniformly dispersed, inject nitrogen, stir and heat up to 40°C;

[0056] (3) adding 0.18g initiator potassium persulfate to the reaction system of step (2) to initiate 30min;

[0057] (4) The temperature of the reaction system in step (3) was raised to 65° C., 9 g of butyl acrylate monomer was added, and after constant temperature reaction for 1 hour, 0.12 g of 1,2-ethylene glycol dimethacrylate crosslinking agent was added, and continued Stop after ...

Embodiment 2

[0063] (1) Peel off the outer skin of corn stalks, wash, dry to constant weight, and pulverize with a universal grinder to make straw fragments. Take 50g of straw fragments and put them into a stirred 500mL three-neck flask, add 150mL of 10w% sodium hydroxide solution, irradiate for 10min under the conditions of microwave radiation power of 800W, and radiation temperature control of 90°C, dilute with 9.5w% neutralize with hydrochloric acid to pH 7, wash with water three times, filter, dry to constant weight to obtain straw powder, and set aside;

[0064] (2) Weigh 3 g of the treated straw powder, add 150 mL of water, stir to disperse the powder evenly, and pass nitrogen gas. Stir and heat up to 40°C;

[0065] (3) adding 0.20g initiator ammonium persulfate to the reaction system of step (2) to initiate 30min;

[0066] (4) The temperature of the reaction system in step (3) was raised to 65° C., and 12 g of lauryl acrylate monomer was added. After reacting for 1 hour, 0.16 g of...

Embodiment 3

[0071] (1) Wash 50 g of corn stalks, dry them, pulverize them with a universal grinder, and sieve them to make straw fragments. In a stirred 500mL three-neck flask, add 150mL of 10w% sodium hydroxide solution, heat and stir, cook and react at 85°C for 3h, neutralize with 9.5w% hydrochloric acid to pH 7, wash with water three times, filter , dried to a constant weight to obtain straw powder, and set aside.

[0072] (2) Weigh 3 g of the treated straw powder, add 120 mL of deionized water and stir to make it uniformly dispersed, inject nitrogen gas, and stir to raise the temperature to 40°C.

[0073] (3) Add 0.30g initiator potassium persulfate to the reaction system of step (2) and initiate 30min;

[0074] (4) The temperature of the reaction system in step (3) was raised to 70° C., 9 g of lauryl methacrylate monomer was added, and after constant temperature reaction for 1 hour, 0.20 g of 1,4-butanediol diacrylate crosslinking agent was added, and continued The reaction was sto...

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Abstract

The invention relates to a method for preparing an oil absorption material by adopting straws as base materials, which comprises the following steps of: grinding crop straws (maize straws, wheat straws, sorghum straws and the like) into block shapes; adding sodium hydroxide solution or dilute sulphuric acid solution; reflowing and stewing for 10min under the action of microwave, or reflowing in anormal pressure reactor for 3h; filtering, rinsing and drying to obtain straw powder; adding the straw powder into water; warning up under the protection of nitrogen; adding an initiating agent, a reaction monomer and a cross-linking agent; stirring and reacting; and filtering and drying to obtain the oil absorption material. According to the invention, the straws of agricultural solid residues are utilized as the base materials, suspension polymerization is adopted, and graft copolymerization is carried out on acrylic ester or styrene and the like, so that the biodegradable oil absorption material is prepared. The oil absorption material not only has the biodegradability of the straws, but also has the high oil absorption performance of long-chain acrylic ester, so that not only can the production cost be greatly reduced and the solid waste be effectively utilized, but also the density is low, and the effects of oil absorption and oil retention are good due to a special porous structure of the raw straw materials.

Description

technical field [0001] The invention belongs to the technical field of processing liquid pollutant materials. The invention relates to a method for preparing a material for absorbing oil pollutants in water by using crops as raw materials. 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. [0003] Super oil-absorbing resin is a new type of functional polymer material developed in recent years. Compared with traditional oil-absorbing materials, it has the characteristics of many types of oil-absorbing materials, basically no water absorption, small volume, fast oil-absorbing rate, and convenient recycling. It can b...

Claims

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Application Information

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IPC IPC(8): C08F251/02C08F220/18C08F2/18B01J20/26B01J20/28B01J20/30C02F1/28
CPCY02P20/582
Inventor 谭凤芝曹亚峰刘兆丽李沅徐同宽葛秀
Owner DALIAN POLYTECHNIC UNIVERSITY
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