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Preparation method of hydrophobic mineralized waste fiber adsorption material

A technology for waste fibers and adsorption materials, which is applied in the field of preparation of oil-absorbing materials, can solve the problems of high cost, low oil retention rate, complicated operation and the like, and achieves the effects of high oil retention rate, easy operation and simple preparation method.

Pending Publication Date: 2020-03-17
广东海纳新材料科技有限公司
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the current modification technology of oil-absorbing materials, such as complex operation, high cost, and low oil holding rate, the present invention provides a method for preparing hydrophobic and mineralized waste fiber adsorption materials, by grafting polyacrylic acid on fibers through ozone treatment, Provide calcium ion attachment points, and then add calcium carbonate as a medium to achieve hydrophobic modification of polymer materials. The production process avoids the use of highly toxic chemical reagents, which has more advantages in the construction of environmentally safe functional materials, and is suitable for various oils. Has good adsorption capacity

Method used

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  • Preparation method of hydrophobic mineralized waste fiber adsorption material
  • Preparation method of hydrophobic mineralized waste fiber adsorption material
  • Preparation method of hydrophobic mineralized waste fiber adsorption material

Examples

Experimental program
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Effect test

Embodiment 1

[0036] S1. Pretreatment of waste fiber: Soak 5g of waste paper after crushing in 8% NaOH solution at 85℃ for 1 hour to remove the wax on the surface of the fiber. After taking it out, wash it with a large amount of secondary water until the washing liquid is neutral , And then put it in a vacuum oven at 40℃ to dry;

[0037] S2. Ozone treatment: Put the sample processed in step S1 into the ozone generator, react for 30 minutes, and then perform vacuum degassing at room temperature for 30 minutes to remove the adsorbed ozone and oxygen, and then add 3 g of acrylic monomer, together with the raw materials Put it into the polymerization tube, add 500ml of deionized water, deoxidize with nitrogen, heat at 60℃ for 2h, take out the material, rinse and soak with distilled water until its weight does not change;

[0038] S3. Alternate dipping: dipping the waste fiber processed in step S2 in 0.3mol / L CaCl 2 In the solution for 10s, after taking it out, rinse with water for 10s, then immerse ...

Embodiment 2

[0045] In the pretreatment of waste fiber in step S1, the raw material is replaced with crushed 5g waste sweater. The remaining steps are the same as in Example 1. The oil absorption ratio of the waste fiber oil-absorbing material prepared in this example in various oils and water is measured And oil holding rate is shown in Table 3:

[0046] table 3

[0047] Oil type Oil absorption rate (g / g) Oil retention rate (%) crude23.597.4 Diesel oil21.396.6 lubricating oil20.097.5 Peanut oil 20.897.1

[0048] Comparing the data in Table 1 and Table 3, it can be seen that using waste sweaters as raw materials, the waste fiber oil-absorbing material prepared by this method has an oil absorption rate of more than 20g / g and an oil retention rate of about 97%. The oil hydrophobicity is significantly improved. Compared with the unmodified waste sweater, the oil absorption rate and oil retention rate of the waste sweater oil-absorbing material prepared after the modification by this method...

Embodiment 3

[0050] In the pretreatment of waste fiber in step S1, the raw material is replaced with crushed 5g waste pure cotton clothes. The rest of the steps are the same as in Example 1. The waste fiber oil-absorbing material prepared in this example is measured in various oils and water. The oil absorption rate and oil holding rate are shown in Table 4:

[0051] Table 4

[0052] Oil type Oil absorption rate (g / g) Oil retention rate (%) crude27.396.4 Diesel oil25.798.1 lubricating oil22.398.2 Peanut oil 22.296.8

[0053] Comparing the data in Table 1 and Table 4, it can be seen that using waste pure cotton clothes as raw materials, the oil absorption rate of the waste fiber oil absorbing material prepared by this method all reaches above 22g / g, and the oil retention rate is 96%. Above, the lipophilic and hydrophobic properties are significantly improved. Compared with unmodified waste cotton clothes, the oil absorption rate and oil retention rate of the waste sweater oil-absorbing m...

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Abstract

The invention provides a preparation method of a hydrophobic mineralized waste fiber adsorption material. The method specifically includes pretreatment of waste fibers, ozone treatment, alternative impregnation, hydrophobization modification of mineralized waste fibers, and other steps. This method uses one or more of waste paper, waste sweater, and waste cotton clothes as raw materials. The fibers are treated with ozone to enable grafting with polyacrylic acid and to provide calcium ion attachment points, and then calcium carbonate is added as a medium to realize hydrophobization modificationof the polymer material. The use of highly toxic chemical reagents in the production process is avoided so that the method has an advantage in constructing environmentally safe functional materials.The waste fibers obtained through modification have higher oil absorption and oil retention rates for a plurality of types of oil, and have better adsorption performance. The prepared oil-absorbing material is environment-friendly, cheap and simple to prepare and has potential application value in oil-water pollutant treatment.

Description

Technical field [0001] The invention relates to a preparation method of an oil-absorbing material, in particular to a preparation method of a hydrophobic mineralized waste fiber adsorption material. Background technique [0002] With the frequent occurrence of oil spills and the discharge of a large amount of oily wastewater, the pollution of water bodies caused by oil pollution has become more and more serious, which has caused non-ignorable harm to the ecological balance and human health. Therefore, oil pollution control has become an urgent problem in the world today. Among the several oil pollution treatment methods currently available, physical adsorption is one of the most effective ways to deal with large-area oil pollution. The use of high-performance absorbent materials can not only quickly clean up the oil in the water body, but also realize the recovery of oil and the reuse of absorbent materials through compression. As water treatment materials for large-scale use, o...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/40B01D17/022
CPCB01J20/264B01J20/22B01J20/043C02F1/40C02F1/286C02F1/285C02F1/281B01D17/0202B01J2220/4812B01J2220/4806B01J2220/46B01J2220/4825
Inventor 王习文冯沛源李仁坤
Owner 广东海纳新材料科技有限公司
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