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Preparation of vinyl benzyl trimethyl ammonium chloride-modified carbon fibre adsorbent

A technology of vinylbenzyltrimethylammonium chloride and modified carbon, which is applied in the field of water treatment, can solve problems such as biological death, water hypoxia, and environmental pollution, and achieve good desorption performance, easy control of conditions, and high adsorption capacity big effect

Inactive Publication Date: 2016-07-13
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] 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 water hypoxia and biological death. , causing serious environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Carbon fiber oxidation treatment: immerse 100g carbon fiber in a mixed solution of 300mL concentrated nitric acid and 150mL hydrogen peroxide, keep the temperature at 90±3°C, stir, reflux for 25min, cool to room temperature, wash with deionized water until neutral, and separate solid and liquid , dried to obtain carbon fiber;

[0024] (2) Preparation of acid chloride carbon fiber: In the reactor, add N,N-dimethylformamide: 53mL, thionyl chloride: 18mL, carbon oxide fiber: 18g, azobisisobutyronitrile: 2g, at 60 Keep temperature at ±2°C, stir, and reflux for 5 hours. After the reaction, wash with acetone under reflux to remove N,N-dimethylformamide and thionyl chloride adhering to the surface. After taking it out, wash with ethanol, separate solid and liquid, and dry , to obtain carbonyl chloride fibers;

[0025] (3) Preparation of vinylbenzyltrimethylammonium chloride modified carbon fiber adsorbent: In the reactor, add water: 54mL, vinylbenzyltrimethylammonium chlo...

Embodiment 2

[0027] (1) Carbon fiber oxidation treatment: immerse 100g carbon fiber in a mixed solution of 300mL concentrated nitric acid and 180mL hydrogen peroxide, keep the temperature at 90±3°C, stir, reflux for 20min, cool to room temperature, wash with deionized water until neutral, and separate solid and liquid , dried to obtain carbon fiber;

[0028] (2) Preparation of acid chloride carbon fiber: In the reactor, add N, N-dimethylformamide: 54mL, thionyl chloride: 17mL, carbon oxide fiber: 20g, azobisisobutyronitrile: 1g, at 60 Constant temperature at ±2°C, stirring, and reflux reaction for 4 hours. After the reaction, wash with acetone under reflux to remove N,N-dimethylformamide and thionyl chloride adhering to the surface. After taking it out, wash with ethanol, separate solid and liquid, and dry , to obtain carbonyl chloride fibers;

[0029] (3) Preparation of vinylbenzyltrimethylammonium chloride modified carbon fiber adsorbent: In the reactor, add water: 58mL, vinylbenzyltrim...

Embodiment 3

[0031] (1) Carbon fiber oxidation treatment: immerse 100g carbon fiber in a mixed solution of 300mL concentrated nitric acid and 160mL hydrogen peroxide, keep the temperature at 90±3°C, stir, reflux for 30min, cool to room temperature, wash with deionized water until neutral, and separate solid and liquid , dried to obtain carbon fiber;

[0032] (2) Preparation of acid chloride carbon fiber: In the reactor, add N,N-dimethylformamide: 48mL, thionyl chloride: 22mL, carbon oxide fiber: 17g, azobisisobutyronitrile: 1.5g, in 60 ± 2 ℃ constant temperature, stirring, reflux reaction for 6 hours, after the reaction is completed, reflux washing with acetone to remove the N, N-dimethylformamide and thionyl chloride adhering to the surface, after taking it out, wash with ethanol, and separate the solid and liquid. Dry to obtain carbonyl chloride fibers;

[0033](3) Preparation of vinylbenzyltrimethylammonium chloride modified carbon fiber adsorbent: In the reactor, add water: 50mL, viny...

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Abstract

The invention discloses a preparation method for a vinyl benzyl trimethyl ammonium chloride-modified carbon fibre adsorbent. The preparation method comprises the following steps: first, performing an oxidation treatment on carbon fibres by adopting a mixed solution of concentrated hydrochloric acid and hydrogen peroxide; then, performing acylchlorination modification on the oxidized carbon fibres by adopting thionyl chloride; later on, adding 50 to 58 mass percent of water, 20 to 28 mass percent of vinyl benzyl trimethyl ammonium chloride, 18 to 24 mass percent of acylchlorinated carbon fibres and 1.0 to 2.0 mass percent of potassium permanganate into a reactor, wherein the sum of the percentage of various components is 100 percent; finally, keeping a constant temperature of 75+ / -2 DEG C, stirring, refluxing and reacting for 6 to 8 hours, cooling, washing with water until the filtrate is neutral, performing solid-liquid separation, and drying to obtain the vinyl benzyl trimethyl ammonium chloride-modified carbon fibre adsorbent. The absorbent has high stability, high adsorption capacity and high reuse frequency, and is 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 the oil removal and purification of oily sewage, in particular to the preparation and application technology of a vinylbenzyltrimethylammonium chloride modified carbon fiber adsorbent . Background technique [0002] 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 environmental pollution. At present, the "Marine Environmental Protection Law of the People's Republic of my country" and other regulations promulgated by our country stipulate that the maximum allowable discharge concentration o...

Claims

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Application Information

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IPC IPC(8): B01J20/20C02F1/28C02F1/40B01J20/30
CPCB01J20/20C02F1/283C02F1/40
Inventor 李慧芝周英杰张腾赵长征许崇娟
Owner UNIV OF JINAN
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