Preparation method of dimethyl diallyl ammonium chloride-modified porous diatomaceous earth

A technology of dimethyl diallyl ammonium chloride and diatomite, which is applied in the field of water treatment, can solve the problems such as the preparation method of modified porous diatomite, and achieve good physical and chemical stability and high adsorption efficiency , fast effect

Inactive Publication Date: 2016-07-06
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 dimethyl diallyl ammonium chloride to modify porous 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

[0021] (1) Pretreatment of diatomite: sieve diatomite with a 120-mesh sieve, according to the solid-liquid ratio of 1g: 4mL, add diatomite to 1mol / LH 2 SO 4 In an aqueous solution, boil for 30 minutes, after cooling, filter, wash with water until neutral, dry to obtain pretreated diatomite;

[0022] (2) Porous diatomite: In the grinder, add respectively: pretreated diatomite: 80g, phenolic resin: 10g, activated carbon: 8g, calcium stearate: 2g, turn on the grinder, at 500 rpm Grinding at a rotating speed for 50 minutes, taking it out, placing it at 900°C, and calcining for 3.5 hours to obtain porous diatomite;

[0023] (3) Organic porous diatomite: In the reactor, add anhydrous ethanol: 63mL, vinyltriethoxysilane: 20g, stir and dissolve, then add porous diatomite: 30g, and the temperature rises to 55 ℃, reflux reaction for 7 hours, after cooling, solid-liquid separation, the separated solid was washed with deionized water until the filtrate was neutral, and dried to obtain o...

Embodiment 2

[0026] (1) Pretreatment of diatomite: sieve diatomite with a 120-mesh sieve, according to the solid-liquid ratio of 1g: 4mL, add diatomite to 1mol / LH 2 SO 4 In an aqueous solution, boil for 30 minutes, after cooling, filter, wash with water until neutral, dry to obtain pretreated diatomite;

[0027] (2) Porous diatomite: In the grinder, add: pretreated diatomite: 85g, phenolic resin: 8g, activated carbon: 6g, calcium stearate: 1g, turn on the grinder, and turn on the grinder at 500 rpm Grinding at a rotating speed for 60 minutes, taking it out, placing it at 950°C, and calcining for 3 hours to obtain porous diatomite;

[0028] (3) Organic porous diatomite: In the reactor, add anhydrous ethanol: 70mL, vinyltriethoxysilane: 22g, stir and dissolve, then add porous diatomite: 22g, and the temperature rises to 50 ℃, 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 ...

Embodiment 3

[0031] (1) Pretreatment of diatomite: sieve diatomite with a 120-mesh sieve, according to the solid-liquid ratio of 1g: 4mL, add diatomite to 1mol / LH 2 SO 4 In an aqueous solution, boil for 30 minutes, after cooling, filter, wash with water until neutral, dry to obtain pretreated diatomite;

[0032] (2) Porous diatomite: In the grinder, add: pretreated diatomite: 81g, phenolic resin: 7g, activated carbon: 10g, calcium stearate: 2g, turn on the grinder, and turn on the grinder at 500 rpm Grinding at a rotating speed for 40 minutes, taking it out, placing it at 850°C, and calcining for 4 hours to obtain porous diatomite;

[0033] (3) Organic porous diatomite: In the reactor, add anhydrous ethanol: 58mL, vinyltriethoxysilane: 26g, stir and dissolve, then add porous diatomite: 28g, and the temperature rises to 60 ℃, reflux reaction for 8 hours, after cooling, solid-liquid separation, the separated solid was washed with deionized water until the filtrate was neutral, and dried to...

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Abstract

The invention discloses a preparation method of dimethyl diallyl ammonium chloride-modified porous diatomaceous earth.The preparation method is characterized by comprising the steps that diatomaceous earth is pretreated; the diatomaceous earth is prepared into porous diatomaceous earth; the surface of the diatomaceous earth is organized; 24%-34% by mass of deionized water and 42%-52% by mass of dimethyl diallyl ammonium chloride are added in a reactor and stirred to be dissolved, then 18%-28% by mass of organized porous diatomaceous earth is added, uniform mixing is performed, 2%-5% by mass of dimethyl 2,2'-azobis(2-methylpropionate) is added, and the sum of all the components is 100%; a reflux reaction under stirring is performed for 6-8 h at the constant temperature of 65+ / -2 DEG C, solid-liquid separation is performed after cooling is performed, separated solids are washed with the deionized water until filtrate is neutral, filtering and drying are performed, and then the dimethyl diallyl ammonium chloride-modified porous diatomaceous earth is obtained.The adsorbent has the very high adsorption capacity on grease and the good physical, chemical and mechanical properties and is high in regeneration capacity, more in repeated using time, 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 the oil removal and purification of oily sewage, in particular to the preparation of a dimethyl diallyl ammonium chloride modified porous diatomite method and its 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 en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/40
CPCB01J20/14B01J20/20B01J20/22B01J20/262B01J2220/46B01J2220/4806B01J2220/4812C02F1/281C02F1/285C02F1/288C02F1/40C02F2101/32C02F2101/34
Inventor 李慧芝周英杰许崇娟
Owner UNIV OF JINAN
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