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Floating type light self-cleaning microorganism immobilization membrane for removing oil contamination polluting water and preparation method of membrane

A microbial and floating technology, which is applied in the field of floating optical self-cleaning microbial immobilized membranes and preparations for removing oil from water bodies, can solve problems such as difficult recycling and increased costs, and achieve improved catalytic activity, reduced treatment costs, and higher recycling rates. high effect

Inactive Publication Date: 2014-03-19
DALIAN OCEAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the photocatalysts used in this technology are all TiO 2、 Nano-powders such as ZnO, NiO or CuO are easily dispersed in the water body with waves, resulting in difficulty in recycling and increased costs

Method used

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  • Floating type light self-cleaning microorganism immobilization membrane for removing oil contamination polluting water and preparation method of membrane
  • Floating type light self-cleaning microorganism immobilization membrane for removing oil contamination polluting water and preparation method of membrane
  • Floating type light self-cleaning microorganism immobilization membrane for removing oil contamination polluting water and preparation method of membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] a. Disperse 1.0 g of polyvinylpyrrolidone particles into 4.0 ml of deionized water, stir magnetically at room temperature for 2 h until completely dissolved, and obtain a solution of polyvinylpyrrolidone with a concentration of 20% by mass; alcalophilus) strain SG bacterial liquid was added to 12 ml polyvinylpyrrolidone solution, oscillated and shaken until evenly dispersed to obtain a mixed solution of SG-polyvinylpyrrolidone;

[0024] b. Dissolve 1.0 g of polyvinylidene fluoride particles in 9 ml of N-methylpyrrolidone solvent, and stir magnetically for 2 h at room temperature to form a uniform, stable, and viscous sol;

[0025] c. Fill the solutions in steps a and b into two nozzle coaxial electrospinning devices respectively, use the solution obtained in step a as the inner core, and the solution obtained in step b as the outer layer, and connect the positive and negative electrodes of the high-voltage power supply to stainless steel nozzles and aluminum foil, stainl...

Embodiment 2

[0029] a. Disperse 1.0 g of polyvinyl alcohol particles into 9 ml of deionized water, stir magnetically at room temperature for 1 h to fully swell, raise the temperature to 70°C, and continue stirring until the solution is clear and transparent to obtain a polyvinyl alcohol solution with a concentration of 10%. ; Then add 0.5 ml of Flavobacterium sp bacteria liquid to 10 ml of the prepared polyvinyl alcohol solution, shake well until evenly dispersed;

[0030] b. Dissolve 1.0 g polystyrene particles in 3.5 ml tetrahydrofuran solvent, and stir magnetically for 1 h at room temperature

[0031] Form a uniform, stable and viscous sol solution;

[0032] c. Fill the solutions in steps a and b into two nozzle coaxial electrospinning devices respectively, use the solution obtained in step a as the inner core, and the solution obtained in step b as the outer layer, and connect the positive and negative electrodes of the high-voltage power supply to stainless steel nozzles and aluminum ...

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Abstract

The invention discloses a floating type light self-cleaning microorganism immobilization membrane for removing oil contamination polluting water and a preparation method of the membrane. Microorganisms are embedded into an inner layer of a porous polymer by using a coaxial electrostatic spinning technology to form a porous nanofiber membrane with a core-shell structure nanofiber, so that an oil absorbent felt floated on the water surface is formed, thus full contact between the microorganisms and greasy dirt is facilitated, the mass transfer resistance of the microorganisms and the greasy dirt is reduced and the catalytic activity of petroleum degradation microorganisms is effectively improved; a nanometer photocatalyst having the photocatalytic effect is immobilized on the surface of the core-shell structure nanofiber surface, so that the greasy dirty remaining on the surface of the fiber is decomposed under the action of the solar energy; moreover, the floating type light self-cleaning microorganism immobilization membrane has a light self-cleaning function, so that the repeating utilization rate of the oil absorbent felt is increased, and the greasy contamination treatment cost of the water is reduced.

Description

technical field [0001] The invention relates to a microorganism-immobilized film for removing water body oil pollution and a preparation method thereof, in particular to a technology integrating oil pollution adsorption, microbial catalysis and photocatalysis, which can reduce the mass transfer resistance between microorganisms and oil pollution, and effectively improve the catalytic performance of oil-degrading microorganisms. A floating-type light self-cleaning microorganism immobilized film for removing water body oil stains with activity and oil stain removal rate and light self-cleaning function and a preparation method thereof. Background technique [0002] At present, there are physical methods, biological methods and photocatalytic methods for the treatment of water body oil pollution. [0003] The physical method is to use oil-absorbing felts to absorb oil stains floating on the water surface, but the existing oil-absorbing felts are not strong in adsorption capacit...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F3/00
Inventor 潘超胡玉才
Owner DALIAN OCEAN UNIV
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