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Preparation method of lauramidopropyl 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 and easy to control the effect

Inactive Publication Date: 2016-06-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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) Pretreatment of sand: sieve river sand or sea sand with 80-100 mesh sieve, wash with water, and dry to obtain pretreated sand;

[0023] (2) Epoxidized sand: In the reactor, add absolute ethanol: 60mL, γ-(2,3-glycidoxy)propyltrimethoxysilane: 22mL, stir to dissolve, and then add pretreatment Sand: 30g, the temperature was raised to 60±2℃, stirred and reacted for 1.5h, after cooling, the solid-liquid was separated, the separated solid was washed with deionized water, washed until the filtrate became neutral, and dried to obtain epoxidized sand ;

[0024] (3) Preparation method of lauramidopropyl betaine modified sand: In the reactor, add deionized water: 55mL, lauramidopropyl betaine: 10g, stir to dissolve, then add epoxy sand: 35g, After stirring evenly, it was placed in 50kHz ultrasonic treatment for 25min. After taking out, solid-liquid separation was performed. The separated solid was washed with deionized water until the filtrate became neutral, and dried to obt...

Embodiment 2

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

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

[0028] (3) Preparation method of lauramidopropyl betaine modified sand: In the reactor, add deionized water: 60 mL, lauramidopropyl betaine: 8 g, stir to dissolve, and then add epoxidized sand: 32 g, After stirring evenly, it was placed in 50kHz ultrasonic treatment for 20min, taken out and separated into solid-liquid, and the separated solid was washed with deionized water until the filtrate became neutral, and dried to ...

Embodiment 3

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

[0031] (2) Epoxidized sand: In the reactor, add absolute ethanol: 66mL, γ-(2,3-glycidoxy)propyltrimethoxysilane: 20mL, stir to dissolve, and then add pretreatment Sand: 28g, the temperature was raised to 60±2°C, the reaction was stirred for 2h, after cooling, the solid-liquid was separated, the separated solid was washed with deionized water, washed until the filtrate became neutral, and dried to obtain epoxidized sand;

[0032] (3) Preparation method of lauramidopropyl betaine modified sand: In the reactor, add deionized water: 50 mL, lauramidopropyl betaine: 12 g, stir to dissolve, and then add epoxy sand: 38 g, After stirring evenly, it was placed in a 50 kHz ultrasonic wave for 30 min. After taking out, the solid-liquid was separated. The separated solid was washed with deionized water until the filtrate became neutral, and dried to ob...

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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, belongs to the technical field of water treatment, is suitable for degreasing and purification of oily sewage, in particular relates to a preparation method of lauramidopropyl betaine modified sand and its application in water treatment . Background technique [0002] Lauramidopropyl betaine, colorless transparent viscous liquid, easily soluble in water, with excellent performance, extremely low irritant amphoteric surfactant, can be widely compatible with cationic, anionic and nonionic surfactants, with ideal Washing, antistatic and bactericidal, mild to skin, rich and stable foam, and good viscosity adjustment. This product is a bifunctional compound containing alkyl functional groups and amide functional groups, and has excellent oil absorption properties. The material modified with lauramidopropyl betaine has strong lipophilicity and is a good oil absorbing material. [0003] With th...

Claims

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Application Information

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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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