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High-performance straw fiber oil-absorbing material, as well as preparation method and application thereof

An oil-absorbing material, straw fiber technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the problems of low recycling performance, low saturated oil absorption capacity, poor oil-water selectivity, etc. Significant cost and environmental protection, high oil absorption performance, low cost effect

Active Publication Date: 2017-07-14
CHINA NAT PETROLEUM CORP SAFETY & ENVIRONMENTAL TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] CN1375347A discloses a preparation method of fiber oil-absorbing agent, which is prepared by directly modifying straw with acid anhydride, and its oil-absorbing ratio reaches 20-30 times, but the oil-absorbing rate is low
CN103143326A discloses a fiber-based oil-absorbing material. First, sodium hydroxide and sodium hypochlorite are used to pretreat corn stalks to extract cellulose, and then acetic anhydride is used to hydrophobically modify it. The oil-absorbing ratio of the prepared oil-absorbing material can reach 60 times, the preparation method is simple and easy to recycle, but the recycling performance is not high, and the preparation process is polluted
[0012] Natural organic oil-absorbing materials are rich in porous structure, cheap, easy to obtain, safe and biodegradable. The disadvantages are relatively low saturated oil absorption capacity and poor oil-water selectivity.

Method used

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  • High-performance straw fiber oil-absorbing material, as well as preparation method and application thereof
  • High-performance straw fiber oil-absorbing material, as well as preparation method and application thereof
  • High-performance straw fiber oil-absorbing material, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] This example provides a method of using ethyl acetate as a solvent and palm wax as a hydrophobic agent to modify rice straw to obtain a rice straw fiber oil-absorbing material, and this example also provides an oil-absorbing material for the prepared rice straw fiber The oil and water absorption and oil holding performance of the material were tested:

[0078] Wherein, the preparation method of the rice straw fiber oil-absorbing material comprises the following steps:

[0079] (1) Preparation of hydrophobic agent solution: Take 0.5g of palm wax into a 500mL beaker, add 200mL of ethyl acetate, heat and dissolve in a constant temperature water bath at 80°C for 30min, and obtain a hydrophobic agent with a mass concentration of 0.0025g / ml solution.

[0080] (2) Pretreatment of straw: Take 40g of rice straw powder (850μm-1cm) in the autoclave, add 800mL of deionized water, raise the temperature in the autoclave to 200°C, pretreat for 15min, and open it after cooling down an...

Embodiment 2

[0091] This example provides a method of using ethyl acetate as a solvent and paraffin as a hydrophobic agent to modify corn stalks to obtain a corn stalk fiber oil-absorbing material, and this example also provides the prepared corn stalk fiber oil-absorbing material The oil and water absorption and oil holding performance were tested:

[0092] Wherein, the preparation method of corn stalk fiber oil-absorbing material comprises the following steps:

[0093] (1) Preparation of hydrophobic agent solution: Put 1 g of paraffin into a 500 mL beaker, add 300 mL of ethyl acetate, heat and dissolve in a constant temperature water bath at 80°C for 30 min, and obtain a hydrophobic agent solution with a mass concentration of 0.0033 g / mL.

[0094] (2) Pretreatment of straw: Take 20g of corn stalk powder (250μm-850μm) in a high-pressure reactor, add 800mL of deionized water, raise the temperature in the reactor to 180°C, pretreat for 30min, and open it after cooling down and releasing the...

Embodiment 3

[0101] This example provides a method of using carbon tetrachloride as a solvent and palm wax as a hydrophobic agent to modify wheat straw to obtain an oil-absorbing material, and this example also provides an overview of the prepared wheat straw fiber oil-absorbing material. Oil absorption, water absorption and oil holding performance were tested:

[0102] (1) Preparation of hydrophobic agent solution: Take 0.8g of palm wax and put it into a 500mL beaker, add 100mL of carbon tetrachloride, heat and dissolve in a constant temperature water bath at 70°C for 20min, and obtain a hydrophobic agent with a mass concentration of 0.008g / mL agent solution.

[0103] (2) Pretreatment of straw: Take 30g of wheat straw powder (150μm-250μm) in a high-pressure reactor, add 600mL of deionized water, raise the temperature in the reactor to 210°C, pretreat for 15min, and open it after cooling down and releasing the pressure The reaction kettle was filtered and washed to obtain a solid filter r...

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Abstract

The invention provides a high-performance straw fiber oil-absorbing material, as well as a preparation method and application thereof. The straw fiber oil-absorbing material is prepared by using straws as a raw material through hydrothermal pretreatment and water repellent agent impregnation modification, wherein the straw fiber oil-absorbing material comprises 0.5-10 percent of water repellent agent based on 100 percent of total weight. The invention further provides a method for preparing the high-performance straw fiber oil-absorbing material and application of the high-performance straw fiber oil-absorbing material in water body oil-spilled pollution treatment. The high-performance straw fiber oil-absorbing material is prepared by utilizing low-price and easily available natural plant fiber-straws as the raw material through simple hydrothermal pretreatment and water repellent modification method. Compared with a chemically synthesized oil-absorbing material, the oil-absorbing material has the advantages of low cost, biodegrading availability and excellent oil absorbing performance.

Description

technical field [0001] The invention relates to a high-performance straw fiber oil-absorbing material and its preparation method and application, and belongs to the technical field of water body oil spill pollution treatment and new material application in environmental protection. Background technique [0002] In recent years, with the development of the petroleum industry, the use of petroleum and its products has been increasing. However, in the process of its exploitation, refining, storage, transportation and use, due to various accidents, entering the ocean, rivers, lakes and other water environment will cause water pollution. The severe pollution has posed a major threat to the ecological environment and people's life and health. These oil spills form an oil film covering the water surface, which not only wastes precious oil resources, but also blocks the process of water-air exchange, affects the biological chain cycle, destroys the ecological balance of the water bo...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
Inventor 刘昌见储胜利王磊栾国华孙文勇石明杰李娜
Owner CHINA NAT PETROLEUM CORP SAFETY & ENVIRONMENTAL TECH RES INST CO LTD
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