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Preparation method of multifunctional biodegradable oil-water separation film

An oil-water separation membrane and biodegradation technology, which is applied in the field of preparation of biodegradable oil-water separation membranes, can solve the problems of secondary pollution and water pollution of organic dye adsorption materials, achieve short separation time, high separation efficiency, and wide application range Effect

Inactive Publication Date: 2018-03-20
石狮市川大先进高分子材料研究中心
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies of the prior art, the object of the present invention is to provide a simple, efficient, and environmentally friendly preparation method of a biodegradable oil-water separation membrane for multi-functional applications, so as to realize "one material with multiple uses", which can not only realize oil-water separation but also The degradation of organic dyes under visible light is expected to promote the development of multifunctional water treatment materials and provide a new direction for water treatment materials. It not only solves the current serious water pollution problem (oil and organic dyes are the main pollutants of water pollution), but also solves the The post-treatment of oil-water separation materials and the secondary pollution of organic dye adsorption materials are solved

Method used

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  • Preparation method of multifunctional biodegradable oil-water separation film
  • Preparation method of multifunctional biodegradable oil-water separation film
  • Preparation method of multifunctional biodegradable oil-water separation film

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Preparation method of biodegradable oil-water separation membrane with multifunctional application based on cellulose

[0045] (1) Preparation of cellulose solution

[0046] Firstly, cellulose fibers such as cotton, wood pulp, and bamboo pulp were activated, that is, cellulose fibers such as cotton, wood pulp, and bamboo pulp were soaked in water, methanol, and dimethylacetamide (DMAc) for 1 hour in sequence. Suction filtration was performed to remove the soaking solvent left in the cellulose, and finally the activated cellulose was dissolved in a solvent system with a DMAc / LiCl ratio of 92:8 to obtain a 1.5wt% cellulose solution.

[0047] (2) Preparation of cellulose nanofiber membrane by electrospinning

[0048] Tap water was used as the coagulation bath, the prepared cellulose solution was filled into the syringe, and then spun at a propulsion speed of 0.35 mL / min, the positive and negative voltages were set at 21 KV and -1KV, respectively, and the cellulose solutio...

Embodiment 2

[0054] Preparation method of biodegradable oil-water separation membrane with lignin as substrate for multifunctional application

[0055] (1) Preparation of lignin solution

[0056] First, activate the lignin, soak the lignin in water, methanol, and dimethylacetamide (DMAc) for 1.5 hours in sequence, each soaking is accompanied by suction filtration to remove the soaking solvent in the lignin, and finally the activated lignin Lignin was dissolved in a solvent system with a DMAc / LiCl ratio of 93:7 to obtain a 1 wt% lignin solution.

[0057] (2) Preparation of lignin nanofiber membrane by electrospinning

[0058] Using tap water as a coagulation bath, put the prepared lignin solution into a syringe, and then spin at a propulsion speed of 0.35 mL / min, with positive and negative voltages set at 21 KV and -1KV, respectively, on a rotating metal roller. Aluminum foil is used as a collection device, and the roller curls the silk into a film, and the solvent is removed to obtain a ...

Embodiment 3

[0062] Preparation method of applied biodegradable oil-water separation membrane with chitin as matrix

[0063] (1) Preparation of chitin solution

[0064] First, activate chitin, soak chitin in water, methanol, and dimethylacetamide (DMAc) for 1.5 hours in sequence, each soaking is accompanied by suction filtration to remove the soaking solvent in chitin, and finally the activated chitin Chitin was dissolved in a solvent system with a DMAc / LiCl ratio of 92:8 to obtain a 2wt% chitin solution. (2) Preparation of chitin nanofiber membrane by electrospinning

[0065] Using tap water as a coagulation bath, put the prepared chitin solution into a syringe, and then spin it at a propulsion speed of 0.3 mL / min. Aluminum foil is used as a collection device, and the roller curls the silk into a film, removes the solvent, and prepares a chitin nanofiber film.

[0066] (3) Preparation of biodegradable oil-water separation membranes for multifunctional applications by hydrothermal metho...

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Abstract

The invention discloses a preparation method of a multifunctional biodegradable oil-water separation film. The Preparation method of multifunctional biodegradable oil-water separation film comprises the following steps: (1) preparing a polymer matrix solution; (2) preparing a nano-fiber film by virtue of electrostatic spinning; and (3) realizing the construction of a layered micro-nano structure and the nitrogen doping of titanium dioxide once by virtue of a hydrothermal method, so as to obtain the biodegradable oil-water separation film. The prepared biodegradable oil-water separation film iscapable of effectively degrading organic dyes and efficiently separating oil and water under the irradiation of visible light, and ''two purposes'' are realized; on one hand, the organic dyes can bedegraded under the irradiation of the visible light, so that the film is environmentally friendly and low in energy consumption, and the secondary pollution problem caused due to the adsorption and desorption of adsorption materials can be avoided; and on the other hand, the oil-water separation film has biodegradability and is harmless to the environment, so that the post-processing problem of non-biodegradable materials is solved, and the film has very wide application prospects in the fields of the treatment of dye sewage and oil-containing sewage, the recycling of oil and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical engineering and polymer functional materials, and in particular relates to a preparation method of a biodegradable oil-water separation membrane for multifunctional application. Background technique [0002] Water plays a vital role in maintaining human life and the sustainable development of society. With the rapid growth of population and the rapid development of industrialization, water pollution has become a very serious problem. Among the various sources of water pollutants, inorganic (oils and aromatic compounds) and organic (dyes) are the main pollutants. On the one hand, industrial processes such as petrochemical, machinery manufacturing, transportation, leather processing, textile manufacturing, food processing, and pharmaceutical production, kitchen water in daily life, and occasional oil spill accidents at sea will inevitably produce a large amount of oily wastewater. Pollution of th...

Claims

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Application Information

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IPC IPC(8): B01D71/10B01D69/02B01D67/00C02F9/08C02F101/30C02F103/30
CPCB01D67/0002B01D69/02B01D71/10B01D2311/2696B01D2323/39B01D2325/36C02F1/30C02F1/40C02F2101/308C02F2103/30
Inventor 张伟卢灿辉敖成鸿
Owner 石狮市川大先进高分子材料研究中心
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