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Preparation method of undecylene amido propyl betaine modified diatomite

A technology of carboenamidopropyl beet and diatomaceous earth, which is applied in chemical instruments and methods, water/sludge/sewage treatment, adsorbed water/sewage treatment, etc. Alkali-modified diatomite preparation method to achieve good physical and chemical stability, excellent mechanical strength, good desorption performance

Inactive Publication Date: 2016-06-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] After searching, there is no report on the preparation method of using undecylenyl amidopropyl betaine to modify diatomite, 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 diatomite: sieve diatomite with a 140-mesh sieve, according to the solid-liquid ratio of 1g: 3mL, add diatomite into 2mol / L HCl aqueous solution, raise the temperature to 85°C, and stir to react After cooling for 35 minutes, filter, wash with water until neutral, and dry to obtain pretreated diatomite;

[0023] (2) Organized diatomite: In the reactor, add: absolute ethanol: 63mL, 3-chloropropyltrimethoxysilane: 20g, stir to dissolve, then add pretreated diatomite: 30g, the temperature rises To 55°C, reflux reaction for 7h, after cooling, solid-liquid separation, the separated solid was washed with deionized water until the filtrate was neutral, and dried to obtain organic diatomite;

[0024] (3) Preparation method of undecylenamidopropyl betaine modified diatomite: In the reactor, add deionized water: 50mL, undecylenamidopropyl betaine: 13g, stir to dissolve, then add Organic diatomite: 31g, mix well, then add 30% hydrogen peroxide: 6mL, keep the te...

Embodiment 2

[0026] (1) Pretreatment of diatomite: sieve diatomite with a 140-mesh sieve, according to the solid-liquid ratio of 1g: 3mL, add diatomite into 2mol / L HCl aqueous solution, raise the temperature to 80°C, and stir to react 40min, after cooling, filter, wash with water until neutral, and dry to obtain pretreated diatomite;

[0027] (2) Organized diatomite: In the reactor, add: absolute ethanol: 70mL, 3-chloropropyltrimethoxysilane: 16g, stir to dissolve, then add pretreated diatomite: 28g, the temperature rises To 50°C, reflux for 8 hours, after cooling, separate the solid from the liquid, wash the separated solid with deionized water until the filtrate is neutral, and dry to obtain organic diatomite;

[0028] (3) Preparation method of undecylenamidopropyl betaine modified diatomite: In the reactor, add deionized water: 55mL, undecylenamidopropyl betaine: 12g, stir to dissolve, then add Organic diatomite: 28g, mix well, then add 30% hydrogen peroxide: 5mL, keep the temperature ...

Embodiment 3

[0030] (1) Pretreatment of diatomite: sieve diatomite with a 140-mesh sieve, according to the solid-liquid ratio of 1g: 3mL, add diatomite into 2mol / L HCl aqueous solution, raise the temperature to 90°C, and stir to react 33min, after cooling, filter, wash with water until neutral, and dry to obtain pretreated diatomite;

[0031] (2) Organized diatomite: In the reactor, add: absolute ethanol: 58mL, 3-chloropropyltrimethoxysilane: 22g, stir to dissolve, then add pretreated diatomite: 32g, temperature Rising to 60°C, reflux reaction for 6 hours, after cooling, solid-liquid separation, the separated solid was washed with deionized water until the filtrate was neutral, and dried to obtain organic diatomite;

[0032](3) Preparation method of undecylenamidopropyl betaine modified diatomite: In the reactor, add deionized water: 45mL, undecylenamidopropyl betaine: 10g, stir to dissolve, then add Organic diatomaceous earth: 38g, mix evenly, then add 30% hydrogen peroxide: 7mL, keep th...

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Abstract

The invention discloses a preparation method of undecylene amido propyl betaine modified diatomite. The method is characterized in that after diatomite is treated with 2 mol / L HCL, pretreated diatomite is obtained; the pretreated diatomite is subjected to organic modification by using absolute ethyl alcohol and (3-chloropropyl)trimethoxysilane; then 45%-55% of deionized water and 8%-18% of undecylene amido propyl betaine are added to a reactor in percentage by mass, the mixture is stirred for dissolution, then 28%-38% of organic diatomite is added, the mixture is evenly mixed, 5%-8% of hydrogen peroxide with the mass percentage concentration of 30% is added, the sum of percentages of all components is 100%, the mixture is stirred at the constant temperature of 65 plus / minus 2 DEG C for a reflux reaction for 4-6 h, solid-liquid separation is performed after cooling, separated solids are washed with deionized water until the filtrate is neutral, filtration and drying are performed, and the undecylene amido propyl betaine modified diatomite is obtained. The adsorbent has very high adsorption capacity for oil, has excellent physical and mechanical properties and high regeneration capacity, and capable of being reused, low in cost and environment-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 undecylenamidopropyl betaine modified diatomite and its application in application in water treatment. Background technique [0002] With the rapid development of my country's industrialization, the demand for oil is increasing, and the use of oil products is becoming more and more extensive, resulting in a large amount of sewage containing sewage. Oily wastewater mainly comes from the processes of oil extraction, oil refining, oil storage, transportation, and petrochemical production in the petroleum industry. After the oil enters the water body, a water film will be formed on the surface to prevent oxygen from dissolving into the water body, resulting in hypoxia in the water body and biological death. , causing serious environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30C02F1/28
CPCB01J20/14B01J20/22C02F1/288
Inventor 李慧芝翟殿棠卢燕
Owner UNIV OF JINAN
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