Preparation method of hydrophobic oleophylic adsorbent by taking towel gourd cotton as raw material

A technology of adsorbent and loofah cotton, which is applied in the field of preparation of hydrophobic and lipophilic adsorbents, can solve the problems of troublesome waste disposal in adsorption and recovery work, slow natural degradation speed, and inability to generate naturally, and achieves convenient and fast acquisition, good quality Effect of oil adsorption and good hydrophobicity

Pending Publication Date: 2020-08-25
TONGJI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantage of these materials compared to mineral materials and natural fiber materials is that the natural degradation rate is very slow or not degraded at all, and at the same time they cannot be naturally generated
It has brought a lot of trouble to the adsorption recovery work and subsequent waste treatment work

Method used

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  • Preparation method of hydrophobic oleophylic adsorbent by taking towel gourd cotton as raw material
  • Preparation method of hydrophobic oleophylic adsorbent by taking towel gourd cotton as raw material
  • Preparation method of hydrophobic oleophylic adsorbent by taking towel gourd cotton as raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]The first step: pretreatment: Soak the ready-to-use loofah cotton raw material with ultrapure water at room temperature (20-25°C) for 24.0h, wash with pure water three times, and dry in a vacuum oven at 70°C until the quality is constant;

[0043] The second step: alkali treatment: immerse the loofah cotton pretreated in the first step in the alkaline solution, at room temperature (20-25°C), stir with a magnetic stirrer for 8.0h, and the above-mentioned alkaline solution is 5%wt NaOH solution, then adjusted the pH to 7.0 with hydrochloric acid, washed several times with pure water, and dried in a vacuum oven at 70°C until the mass was constant;

[0044] The third step: silicon-loaded surface treatment: add 20.0mL pure water to 100.0mL absolute ethanol, then add 2.0mL tetraethyl silicate under stirring condition, and stir for 10 minutes to obtain a mixed solution 1, the loofah cotton treated with alkali Immerse 2.0 g in mixed solution 1, stir at room temperature for 10 mi...

Embodiment 2

[0055] The first step: pretreatment: Soak the ready-to-use loofah cotton raw material with ultrapure water at room temperature (20-25°C) for 24.0h, wash with pure water three times, and dry in a vacuum oven at 70°C until the quality is constant;

[0056] The second step: pretreatment: immerse 2.0g of pretreated loofah cotton in the mixed solution, and stir with a magnetic stirrer for 5.0h at 70°C. The above alkaline solution is 1%wt NaOH+1%wt H 2 o 2 solution, then adjust the pH to 7.0 with hydrochloric acid, wash several times with pure water, and dry in a vacuum oven at 70°C until the quality is constant;

[0057] The third step: silicon-loaded surface treatment: add 20mL pure water to 100mL ethanol solution, then add 2mL tetraethyl silicate under stirring conditions, stir for 10min to obtain a mixed solution, and immerse 2.0g of alkali-treated loofah cotton into the mixed solution , stirred at room temperature for 10 min, then added 1.0 mL of ammonia water, stirred at room...

Embodiment 3

[0061] The first step: pretreatment: Soak the ready-to-use loofah cotton raw material with ultrapure water at room temperature (20-25°C) for 24.0h, wash with pure water three times, and dry in a vacuum oven at 70°C until the quality is constant;

[0062] The second step: pretreatment: immerse 2.0g of the pretreated loofah cotton in 100mg / L NaClO solution, stir with a magnetic stirrer for 24.0h at room temperature (20-25°C), then adjust the pH to 7.0 with hydrochloric acid, Wash several times with pure water, and dry in a vacuum oven at 70°C until the quality is constant;

[0063] The third step: surface silicon-loaded treatment: add 20.0mL pure water to 100.0mL ethanol solution, then add 2.0mL tetraethyl silicate under stirring conditions, stir for 10min to obtain a mixed solution, and add 2.0g of alkali-treated loofah cotton Immerse in the mixed solution, stir for 10 min at room temperature, then add 1.0 mL of ammonia water, stir for 5.0 h at room temperature, then wash with ...

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Abstract

The invention relates to a preparation method of a hydrophobic oleophylic adsorbent by taking towel gourd cotton as a raw material. The preparation method comprises the following steps: 1, taking towel gourd cotton as a raw material, soaking, cleaning and drying the material; 2, immersing the material in an alkaline solution for pretreatment, then adjusting the material to be neutral with an acid,and carrying out cleaning and drying; 3, immersing the material subjected to alkali treatment into a mixed solution of tetraethyl silicate, absolute ethyl alcohol and pure water, then adding a properamount of ammonia water, and then cleaning and drying with ethyl alcohol; and 4, immersing the material in a mixed solution of hexadecyl trimethoxysilane and pure water, adding a proper amount of acetic acid, cleaning with ethanol, and drying to obtain the modified adsorption material. Compared with the prior art, the adsorbent can be widely applied to petroleum leakage treatment and oily wastewater treatment, and the oil absorption material obtained through modification is high in adsorption rate, low in cost, biodegradable and free of secondary environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of material surface modification and adsorption new materials, and relates to a preparation method of a hydrophobic and lipophilic adsorbent using loofah cotton as a raw material. Background technique [0002] Oil spills are an inevitable consequence of the continued exploitation of fossil fuel resources. Surfactant, although capable of dissolving oil, can be a serious hazard to aquatic life and may lead to long-term contamination of the seabed. Larger oil skimmers can remove oil, but the equipment is expensive, and their usefulness depends largely on weather conditions. Therefore, in the existing main oil removal technology, the use of oil adsorbent becomes more meaningful. Oil adsorbent has lipophilicity and hydrophobicity, has good oil-water separation function, removes oil stains and can recycle leaked oil at the same time. And if the adsorbent has the ability to absorb oil into the material matrix, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28C02F1/40B01J20/30C02F101/32
CPCB01J20/24B01J20/10B01J20/22B01J20/28002B01D17/0202C02F1/40B01J2220/485C02F2101/32
Inventor 张天阳张肸同徐斌朱宜平童俊
Owner TONGJI UNIV
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