Preparation of dimethyl diallyl ammonium chloride modified towel gourd vegetable sponge adsorbent

A technology of dimethyl diallyl ammonium chloride and loofah, which is applied in the field of water treatment to achieve the effect of low density, high removal rate and fast speed

Inactive Publication Date: 2015-01-21
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neha Gupta et al. have studied methylene blue and malachite green in the adsorption water of potato stalks, and its maximum adsorption capacity is: 52.6mg/g, (Neha Gupta, Application of potato (Solanum tuberosum) plant wastes for the removal of methylene blue and malachite green dye from aqueous solution. Arabian Journal of Chemistry, (2011),); Runping Han et al. studied the adsorption of methylene blue in water by fallen leaves of sycamore trees, and its maximum adsorption capacity was: 89.7mg/g, (Runping Han, Biosorption of methylene blue fro

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] (1) Pretreatment of loofah: Loofah is derived from the fruit of loofah and is obtained by peeling and removing the pit. The loofah is cut into small pieces and washed with water, dried and crushed, and then sieved with a 10 mesh sieve to obtain pretreated loofah. Network

[0022] (2) Oxidized loofah: In the reactor, add pretreated loofah: 15g, water: 80mL, NaOH: 5g, soak at room temperature for 20 h, then boil for 30 minutes, and wash with deionized water until it is neutral after cooling. Put it into 100mL concentrated nitric acid, keep at 90℃, stir, and reflux for 100 min. After cooling, wash with deionized water and suction filter until the filtrate is neutral, dry in a vacuum drying oven to obtain oxidized loofah;

[0023] (3) Preparation of acyl chloride loofah: In the reactor, add 35mL dimethylformamide, thionyl chloride: 35mL, and oxidized loofah: 10g, and react at 70°C under constant temperature, stirring and reflux for 55 hours. The reaction is com...

Example Embodiment

[0025] Example 2

[0026] (1) Pretreatment of loofah: Loofah is derived from the fruit of loofah and is obtained by peeling and removing the core. The loofah is cut into small pieces and washed with water, dried and crushed, and then sieved with a 20-mesh sieve to obtain pretreated loofah. Network

[0027] (2) Oxidized loofah: In the reactor, add pretreated loofah: 10g, water: 82mL, NaOH: 8g, soak at room temperature for 24 h, then boil it for 40 minutes, and wash it with deionized water until it is neutral after cooling. Put it in 80mL concentrated nitric acid, keep at 85°C, stir, and react under reflux for 90 min. After cooling, wash with deionized water and filter with suction until the filtrate is neutral, dry in a vacuum drying oven to obtain oxidized loofah;

[0028] (3) Preparation of acyl chloride loofah: In the reactor, add 40mL dimethylformamide, thionyl chloride: 28mL, oxidized loofah: 15g, and react at 65°C under constant temperature, stirring, and reflux for 60 hours, a...

Example Embodiment

[0030] Example 3

[0031] (1) Pretreatment of loofah: Loofah is derived from the fruit of loofah and is obtained by peeling and removing the pit. Cut the loofah into small pieces, wash with water, dry and pulverize, sieving with a 40-mesh sieve to obtain pretreated loofah Network

[0032] (2) Oxidized loofah: In the reactor, add pretreated loofah: 18g, water: 72mL, NaOH: 10g, soak at room temperature for 12 h, then boil for 20 minutes, and wash with deionized water until it is neutral after cooling. Put it into 90mL concentrated nitric acid, keep at 95℃, stir, and react under reflux for 120 min. After cooling, wash with deionized water and filter with suction until the filtrate is neutral and dry in a vacuum drying oven to obtain oxidized loofah;

[0033] (3) Preparation of acyl chloride loofah: In the reactor, add 27mL dimethylformamide, thionyl chloride: 37mL, oxidized loofah: 13g, and react at 75°C under constant temperature, stirring, and reflux for 50 hours, and the reaction is...

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PUM

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Abstract

The invention discloses a preparation method and an application technology of a dimethyl diallyl ammonium chloride modified towel gourd vegetable sponge adsorbent, and is characterized in that the preparation method comprises the steps: peeling and denucleating mature fruits of towel gourd, washing with water to remove soil and impurities, drying, crushing, and carrying out chemical treatment drying to obtain acylating-chlorination towel gourd vegetable sponge; adding, by the mass percentage, 56-71% of dimethyl diallyl ammonium chloride, 10-20% of the acylating-chlorination towel gourd vegetable sponge, 12-26% of water and 0.5-2.0% of ammonium persulfate into a reactor, wherein the sum of the percentages of all the components is 100%; under the nitrogen protection and at a constant temperature of 45-55 DEG C, stirring and carrying out a reflux reaction for 4-5 h; and after cooling, washing with deionized water, carrying out suction filtration until a filtrate is neutral, drying in a vacuum drying oven, and thus obtaining the dimethyl diallyl ammonium chloride modified towel gourd vegetable sponge adsorbent. The adsorbent has the advantages of quite high adsorption capacity on grease, excellent physicochemical and mechanical properties, strong regeneration capacity, capacity of being repeatedly used many times, low cost, greenness and environmental protection.

Description

technical field [0001] The invention relates to a preparation method of a biological 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 of a dimethyl diallyl ammonium chloride modified loofah adsorbent. Application Technology. 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 co...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/40
CPCB01J20/24B01J20/3085B01J2220/4825C02F1/286C02F1/40
Inventor 李慧芝周英杰许崇娟
Owner UNIV OF JINAN
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