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Preparation method of super-hydrophobic natural sponge

A super-hydrophobic and sponge-based technology, applied in separation methods, grease/oily substance/suspton removal devices, liquid separation, etc., can solve the problems of low processing efficiency and easy repetition of pollution, avoiding modification of binders, preparation The process is simple and effective, and the effect of simple process

Pending Publication Date: 2020-05-19
中新瑞美(天津)环保科技有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the pollution of groundwater is often not accurately grasped in reality, the in-situ treatment method generally has low treatment efficiency and repeated pollution.

Method used

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  • Preparation method of super-hydrophobic natural sponge
  • Preparation method of super-hydrophobic natural sponge
  • Preparation method of super-hydrophobic natural sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The natural sponge was ultrasonically cleaned three times with ultrapure water and 75% ethanol, and the stains and residues on the surface of the sponge were removed, and then dried in an oven at 60 °C for use. The resulting sponge was immersed in 50 mL of ethanol, and 1 g of Zn(NO 3 ) 2 •6H 2 Compound O was added to the above mixture, and stirred in a constant temperature water bath at 60 °C for 8 h. The resulting sponge was separated from the mixture and washed twice with ethanol. Weigh 0.25 g of 2-methylimidazole into 50 mL of ethanol solution, disperse the obtained sponge in the above mixture, and stir in a constant temperature water bath at 60 °C for 8 h. The obtained sponge was separated from the mixture, washed twice with ethanol, and dried in an oven at 60 °C to obtain a superhydrophobic natural sponge.

[0026] In order to evaluate the absorption capacity of superhydrophobic natural sponge, n-decane, ethylbenzene, 1,2-dichlorobenzene, ethyl chloride, chloro...

Embodiment 2

[0029] The natural sponge was ultrasonically cleaned twice with ultrapure water and 75% ethanol, and the stains and residues on the surface of the sponge were removed, and then dried in an oven at 80 °C for use. The resulting sponge was immersed in 50 mL of ethanol, and 3 g of Zn(NO 3 ) 2 •6H 2 Compound O was added to the above mixture, and stirred in a constant temperature water bath at 40 °C for 16 h. The resulting sponge was separated from the mixture and washed 3 times with ethanol. Weigh 0.75 g of 2-methylimidazole and place it in 50 mL of ethanol solution, disperse the obtained sponge in the above mixture, and stir in a constant temperature water bath at 40 °C for 16 h. The obtained sponge was separated from the mixture, washed three times with ethanol, and dried in an oven at 80 °C to obtain a superhydrophobic natural sponge.

[0030]In order to evaluate the absorption capacity of superhydrophobic natural sponge, n-decane, ethylbenzene, 1,2-dichlorobenzene, chloroet...

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Abstract

The invention discloses a method for preparing super-hydrophobic natural sponge for treating underground water non-aqueous phase liquid, which comprises the following steps: (1) ultrasonically cleaning natural sponge with ultrapure water and 75% ethanol respectively, removing stains and residues on the surface of the sponge, and drying the sponge for later use; (2) soaking the cleaned sponge intoethanol, adding a certain amount of weighed Zn(NO3)2.6H2O particles into the mixed solution, and then stirring in a constant-temperature water bath; and (3) separating the sponge filled with Zn<2+> from the mixed solution, and washing the sponge with ethanol; and (4) weighing a certain amount of 2-methylimidazole, putting the 2-methylimidazole into 50mL of an ethanol solution, dispersing the sponge filled with Zn<2+> into the 2-methylimidazole ethanol solution, and then stirring in a constant-temperature water bath; and reacting to obtain the super-hydrophobic natural sponge, washing the sponge with ethanol, and drying the sponge for later use. The preparation method is simple, effective, green and environment-friendly. The super-hydrophobic natural sponge prepared by the invention has thecharacteristics of biodegradability and strong hydrophobicity and lipophilicity, the contact angle can reach 156 degrees, and the super-hydrophobic natural sponge can be used for treating undergroundwater non-aqueous phase liquid pollutants and can be recycled.

Description

technical field [0001] The invention relates to a superhydrophobic natural sponge for treating groundwater non-aqueous phase liquids and a preparation method thereof, belonging to the technical field of water environment protection. Background technique [0002] As a high-quality fresh water resource, groundwater accounts for about 70% of the domestic drinking water of our people and is the main source of drinking water. However, in recent years, with the rapid development of my country's economy, environmental problems have become increasingly serious, among which the pollution of groundwater is particularly serious, which is very unfavorable to the healthy life of human beings and the stable development of society. [0003] One of the most harmful pollutants in groundwater is non-aqueous organic matter, which is mostly in the form of oil or emulsion in groundwater. At present, the most commonly used method for treating non-aqueous liquids in groundwater is the extraction-...

Claims

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Application Information

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IPC IPC(8): C08J9/40C02F1/40
CPCC02F1/40C08J9/405C08J2487/00
Inventor 黄仁亮何彦苏荣欣刘朝辉张景辉
Owner 中新瑞美(天津)环保科技有限公司
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