Preparation method of sponge with pore diameter adjusted and controlled by paper fiber for oil and water separation

An oil-water separation and paper fiber technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problems of large pore size, large processing capacity, poor separation effect, etc. Strong control effect

Active Publication Date: 2018-04-17
单简文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the above-mentioned existing methods, the present invention provides a relatively simple and easy method: by using paper fibers to regulate the pore size of the sponge, a large amount and high-efficiency sep...

Method used

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  • Preparation method of sponge with pore diameter adjusted and controlled by paper fiber for oil and water separation
  • Preparation method of sponge with pore diameter adjusted and controlled by paper fiber for oil and water separation
  • Preparation method of sponge with pore diameter adjusted and controlled by paper fiber for oil and water separation

Examples

Experimental program
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Effect test

Embodiment 1

[0032] In 100mL of deionized water, add 0.7g rice paper fragments, homogenize with a homogenizer at a speed of 10000rpm for 1h to obtain a paper fiber suspension, adjust the pH value of the suspension to 3, and then the size is about 2.5×2.5×0.4 cm of melamine sponge is fully submerged, taken out after about 10 hours, and freeze-dried. Then put the freeze-dried sponge into the upper part of the vessel containing a 50% glutaraldehyde solution, seal it, and react at room temperature (25° C.) for 12 hours.

[0033] 0.1 g of dopamine and 0.1 g of polyethyleneimine with a molecular weight of 600 were added to 50 mL of tris aqueous solution with a concentration of 10 mmol / L and stirred to dissolve, and the pH value was adjusted to 8.5. Immerse the modified paper fiber sponge in the above solution and shake it at room temperature for 12 hours, so that the surface of the modified sponge is evenly covered with the polydopamine / polyethyleneimine modified layer. The sponge whose paper f...

Embodiment 2

[0037] In 100mL of deionized water, add 0.7g of ordinary white paper fragments, and use a homogenizer to homogenize at a speed of 10000rpm for 1h to obtain a paper fiber suspension. The melamine sponge of ×0.4cm is fully submerged, taken out after about 10h, and freeze-dried. Then put the freeze-dried sponge into the upper part of the vessel containing a 50% glutaraldehyde solution, seal it, and react at room temperature (25° C.) for 12 hours.

[0038] 0.1 g of dopamine and 0.1 g of polyethyleneimine with a molecular weight of 600 were added to 50 mL of tris aqueous solution with a concentration of 10 mmol / L and stirred to dissolve, and the pH value was adjusted to 8.5. Immerse the modified paper fiber sponge in the above solution and shake it at room temperature for 15 hours, so that the surface of the modified sponge is evenly covered with the polydopamine / polyethyleneimine modified layer. After the reaction is completed, wash it with water several times, and then vacuum dry...

Embodiment 3

[0041]In 100mL of deionized water, add 0.05g of rice paper fragments, homogenize with a homogenizer at a speed of 3000rpm for 0.3h to obtain a paper fiber suspension, adjust the pH of the suspension to 6, and then the size is about 2.5×2.5× The 0.4cm melamine sponge is fully submerged, taken out after about 2 hours, and freeze-dried. Then put the lyophilized sponge into the upper part of the vessel containing a 15% glutaraldehyde solution, seal it, and react at room temperature (25° C.) for 8 hours.

[0042] 0.02 g of dopamine and 0.02 g of polyethyleneimine with a molecular weight of 800 were added to 50 mL of tris aqueous solution with a concentration of 10 mmol / L and stirred to dissolve, and the pH value was adjusted to 7.2. Immerse the modified paper fiber sponge in the above solution and shake it at room temperature for 6 hours, so that the surface of the modified sponge is evenly covered with a polydopamine / polyethyleneimine modified layer. After the reaction is complete...

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Abstract

The invention discloses a preparation method of a sponge with pore diameter adjusted and controlled by paper fiber for oil and water separation. The preparation method comprises the following steps of(1) preparing a paper fiber suspension liquid, adjusting the pH (potential of hydrogen) value of the suspension liquid, soaking the sponge into the paper fiber suspension liquid, enabling the paper fiber to fully enter the sponge, and freeze-drying; (2) putting the obtained sponge into a dish containing a fiber fixing adhesive solution, sealing, and reacting for 6 to 48h at the temperature of 20to 70 DEG C; (3) adding a surface hydrophilic modifier into a buffer solution, and dissolving; soaking the obtained sponge in step (2) into the solution, oscillating and depositing for 6 to 48h at thetemperature of 20 to 70 DEG C, and post-treating, so as to obtain the sponge with the pore diameter adjusted and controlled by the paper fiber for the oil and water separation. The prepared sponge with the pore diameter adjusted and controlled by the paper fiber for the oil and water separation has the advantages that the pore diameter is large, the super-hydrophilic property is realized, and thetreatment amount of oil and water separation reaches 2*10<7>L m<-2>h<-1>bar<-1>; the maximum oil and water separation efficiency reaches 96%.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a preparation method of an oil-water separation material. Background technique [0002] Industrial production such as petrochemical, daily chemical, textile, leather, steel manufacturing or metal processing will produce a large amount of oily wastewater. These oily water mixtures will cause great harm to the environment and human health, and need to be effectively treated. In addition, the frequent occurrence of oil spills at sea in recent years has caused long-term and fatal impacts on the ecosystem, so the oil-water separation of oily wastewater is facing a global challenge. [0003] In recent years, membrane separation technology has become the focus of attention in the field of oil-water separation due to its advantages of high separation efficiency, simple operation, and low energy consumption; the separation efficiency and processing flux in the membr...

Claims

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Application Information

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IPC IPC(8): C08J9/42C08J9/40B01D17/022C02F1/40C08L75/04C08L61/28
CPCB01D17/02C02F1/40C08J9/405C08J9/42C08J2361/28C08J2375/04C08J2401/02C08J2479/02C08J2479/04
Inventor 单简文
Owner 单简文
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