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A kind of sponge composite type organic solvent absorbent and preparation method thereof

An organic solvent and composite technology, which is applied in the field of sponge composite organic solvent absorbent and its preparation, can solve the problems of being unsuitable for handling trace amounts of organic solvents, and the preparation process of the absorbent is complicated, and achieves improved surface hydrophobicity and lipophilicity and oil-water selection. The effect of increasing the surface roughness of the skeleton and high practicability

Active Publication Date: 2020-05-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the absorbent is complicated, and it is not suitable for treating trace organic solvents in wastewater.

Method used

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  • A kind of sponge composite type organic solvent absorbent and preparation method thereof
  • A kind of sponge composite type organic solvent absorbent and preparation method thereof
  • A kind of sponge composite type organic solvent absorbent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A method for preparing a sponge composite organic solvent absorbent includes the following steps:

[0046] (1) After immersing the polyurethane sponge with NaOH (10wt%) aqueous solution, heating it at 60°C for 1.5h, then washing with deionized water and drying for use;

[0047] (2) Immerse the alkali-treated polyurethane sponge in step (1) in the acrylic resin emulsion for 1.5 hours, then take it out and let it dry naturally at room temperature, and repeat the process twice;

[0048] (3) Put the polyurethane sponge loaded with acrylic resin in step (2) in a 150°C constant temperature drying oven to cure for 2 hours to obtain an acrylic resin / polyurethane sponge composite material;

[0049] (4) The acrylic resin / polyurethane sponge composite material is 5mmol / L -1 The zinc acetate ethanol solution is impregnated and dried to obtain a ZnO seed crystal / acrylic resin / polyurethane sponge composite material;

[0050] (5) Prepare 50mmol / L separately -1 Zinc nitrate aqueous solution and ...

Embodiment 2

[0062] A method for preparing a sponge composite organic solvent absorbent includes the following steps:

[0063] (1) Immerse the polyurethane sponge with KOH (5wt%) aqueous solution and heat it at 55°C for 1 hour, then wash it with deionized water and dry it for later use;

[0064] (2) Immerse the alkali-treated polyurethane sponge in step (1) in the acrylic resin emulsion for 1.5 hours, then take it out and let it dry naturally at room temperature, and repeat the process 3 times;

[0065] (3) Put the polyurethane sponge loaded with acrylic resin in step (2) in a constant temperature drying oven at 120°C for 2.5 hours to cure to obtain an acrylic resin / polyurethane sponge composite material;

[0066] (4) The ratio of acrylic resin / polyurethane sponge composite material to 15mmol / L -1 The zinc acetate ethanol solution is impregnated and dried to obtain a ZnO seed crystal / acrylic resin / polyurethane sponge composite material;

[0067] (5) Prepare 150mmol / L separately -1 ZnSO 4 Zinc nitrat...

Embodiment 3

[0070] A method for preparing a sponge composite organic solvent absorbent includes the following steps:

[0071] (1) After immersing the polyurethane sponge with KOH (15wt%) aqueous solution, heating it at 45°C for 0.5h, then washing with deionized water and drying for use;

[0072] (2) Immerse the alkali-treated polyurethane sponge in step (1) in the acrylic resin emulsion for 1 hour, then take it out and dry it naturally at room temperature, and repeat the process twice;

[0073] (3) Put the polyurethane sponge loaded with acrylic resin in step (2) in a constant temperature drying oven at 100°C for 1.5 hours to obtain an acrylic resin / polyurethane sponge composite material;

[0074] (4) The acrylic resin / polyurethane sponge composite material is 9mmol / L -1 The zinc acetate ethanol solution is impregnated and dried to obtain a ZnO seed crystal / acrylic resin / polyurethane sponge composite material;

[0075] (5) Prepare 90mmol / L separately -1 ZnSO 4 Zinc nitrate aqueous solution and 45mm...

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Abstract

The invention discloses a sponge composite organic solvent absorbent and a preparation method thereof. The preparation method comprises the steps that firstly, an alkaline water solution is used for treating a polyurethane sponge, then, an acrylic resin emulsion coats the polyurethane stone treated by the alkaline solution, solidification is performed to obtain an acrylic acid resin / polyurethane sponge composite material, the acrylic acid resin / polyurethane sponge composite material grows ZnO seed crystals in a zinc acetate ethanol solution, then, the composite material is placed into a watersolution containing zinc ions and hexamine to grow ZnO nanoparticles, and after drying is performed, a sponge composite type organic solvent absorbent is obtained. The prepared composite absorbent isprovided with a large hole structure of the polyurethane sponge, the high oil absorbing capability of oil absorbing resin is obtained, by introducing the ZnO nanoparticles, the surface lyophobic and lipophilic performance is improved, a micro organic solvent in an oil-water mixture can be effectively stopped, and the absorbent can be applied to continuous treatment of wastewater containing solvents.

Description

Technical field [0001] The invention belongs to the field of adsorption and absorption functional materials, and specifically relates to a sponge composite organic solvent absorbent and a preparation method thereof. Background technique [0002] One type of pollutant often contained in industrial wastewater is volatile organic compounds (VOCs), such as organic solvents such as benzene, esters, ketones, halogenated hydrocarbons, etc., which have a huge impact on human health and can harm human livers and kidneys. , Brain and nervous system, causing serious consequences such as memory loss, and may even cause cancer. Common treatment methods for VOCs in wastewater include: adsorption absorption method, biodegradation method, air stripping method, pervaporation method, extraction method, ultrasonic method, hydrolysis method, photodegradation method, etc., among which the absorbent is recyclable due to its large absorption capacity The advantages such as utilization and fast absorpt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/26B01J20/28C02F1/28C02F1/40B01J20/30
CPCB01J20/06B01J20/26B01J20/28045C02F1/281C02F1/285C02F1/40
Inventor 张卫英别云霞李晓林畅陈秋月
Owner FUZHOU UNIV
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