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A kind of preparation method of lauryl amidopropyl betaine modified sand

A technology of lauryl amidopropyl betaine and modified sand, which is applied in the field of water treatment, can solve the problems such as the preparation method of the sand adsorption material modified by lauryl amidopropyl betaine, and achieve good physical and chemical stability and desorption performance Good, large adsorption capacity

Inactive Publication Date: 2018-06-01
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After searching, there is no report on the preparation method of sand adsorption material modified by lauryl amidopropyl betaine, and its application to the adsorption of oil in sewage treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Sand pretreatment: Sieve river sand or sea sand with a sieve of 80-100 mesh, wash with water, and dry to obtain pretreated sand;

[0023] (2) Epoxylated sand: In the reactor, add absolute ethanol: 60 mL, γ-(2,3-epoxypropoxy)propyltrimethoxysilane: 22 mL, stir to dissolve, then add Pretreatment sand: 30g, temperature rises to 60±2°C, stirs and reacts for 1.5 h, after cooling, separates solid and liquid, washes the separated solid with deionized water, washes until the filtrate is neutral, and dries to obtain epoxy group melt sand;

[0024] (3) Preparation method of lauryl amidopropyl betaine modified sand: In the reactor, add deionized water: 55mL, lauryl amidopropyl betaine: 10g, stir and dissolve, then add epoxy-based sand: 35g, Stir evenly and place in 50kHz ultrasonic wave for 25 minutes, take it out and separate the solid from the liquid, wash the separated solid with deionized water until the filtrate is neutral, and dry to obtain lauryl amidopropyl betaine mo...

Embodiment 2

[0026] (1) Sand pretreatment: Sieve river sand or sea sand with a sieve of 80-100 mesh, wash with water, and dry to obtain pretreated sand;

[0027] (2) Epoxylated sand: In the reactor, add absolute ethanol: 53 mL, γ-(2,3-epoxypropoxy)propyltrimethoxysilane: 23 mL, stir to dissolve, and then add Pretreatment sand: 33g, temperature raised to 60±2°C, stirred for 1h, after cooling, solid-liquid separation, the separated solid was washed with deionized water, washed until the filtrate was neutral, dried to obtain epoxidized sand;

[0028] (3) Preparation method of lauryl amidopropyl betaine modified sand: In the reactor, add deionized water: 60mL, lauryl amidopropyl betaine: 8g, stir and dissolve, then add epoxy-based sand: 32g, Stir evenly and place it in 50kHz ultrasonic wave for 20 minutes, take it out and separate the solid from the liquid, wash the separated solid with deionized water until the filtrate is neutral, and dry to obtain lauryl amidopropyl betaine modified sand. ...

Embodiment 3

[0030] (1) Sand pretreatment: Sieve river sand or sea sand with a sieve of 80-100 mesh, wash with water, and dry to obtain pretreated sand;

[0031] (2) Epoxylated sand: In the reactor, add absolute ethanol: 66 mL, γ-(2,3-epoxypropoxy)propyltrimethoxysilane: 20 mL, stir to dissolve, then add Pretreatment sand: 28g, temperature raised to 60±2°C, stirred for 2 hours, after cooling, solid-liquid separation, the separated solid was washed with deionized water, washed until the filtrate was neutral, dried to obtain epoxy sand;

[0032] (3) Preparation method of lauryl amidopropyl betaine modified sand: In the reactor, add deionized water: 50mL, lauryl amidopropyl betaine: 12g, stir to dissolve, then add epoxy-based sand: 38g, Stir evenly and place in 50kHz ultrasonic wave for 30 minutes, take it out and separate the solid from the liquid, wash the separated solid with deionized water until the filtrate is neutral, and dry to obtain lauryl amidopropyl betaine modified sand.

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Abstract

The invention discloses a preparation method of lauramidopropyl betaine modified sand. The method is characterized by including the steps of screening river sand or sea sand with a screen of 80-100 mesh, washing with water, and drying to obtain preprocessed sand; conducting epoxy group treatment on the preprocessed sand through absolute ethyl alcohol and gamma-(2,3-epoxypropoxy)propyltrimethoxysilicane; adding 50-60% of deionized water and 6-15% of lauramidopropyl betaine into a reactor according to the mass percentage to be stirred and dissolved, adding 31-40% of epoxy group treatment sand according to the total percentage of 100%, evenly stirring, putting the sand in ultrasonic waves of 50 kHz to be processed for 20-30 min, taking out the sand to separate solid from liquid, washing separated solid with deionized water till filtrate is neutral, and drying to obtain the lauramidopropyl betaine modified sand. Adsorbent has quite high adsorption capacity for grease, excellent physical, chemical and mechanical performance and strong regeneration capacity and is capable of being repeatedly used, low in cost, green and environmentally friendly.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent, which belongs to the technical field of water treatment, and is suitable for oil removal and purification of oily sewage, in particular to a preparation method of lauryl amidopropyl betaine modified sand and its application in water treatment . Background technique [0002] Lauramidopropyl betaine, colorless transparent viscous liquid, easily soluble in water, has excellent performance, very low irritation amphoteric surfactant, can be widely compatible with cationic, anionic and nonionic surfactants, has ideal Cleansing, antistatic and bactericidal, mild to the skin, rich and stable foam, and good viscosity adjustment. This product is a bifunctional compound containing an alkyl functional group and an amide functional group, and has excellent oil absorption properties. The material modified with lauryl amidopropyl betaine has strong lipophilicity and is a good oil-absorbing material. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28C02F1/40
CPCB01J20/103B01J20/22B01J2220/46B01J2220/4806C02F1/281C02F1/285C02F1/40
Inventor 李慧芝周英杰潘金营
Owner UNIV OF JINAN
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