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Preparation method of ionic liquid-loaded palm tree bark adsorbent

A palm bark and ionic liquid technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of high consumption of toxic organic solvents, secondary pollution of the environment, and detection difficulties, etc. problems, to achieve the effect of easy industrial production, high mechanical strength and good stability

Inactive Publication Date: 2014-07-16
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both of these two methods consume a large amount of toxic organic solvents and take a long time, which is easy to cause secondary pollution to the environment.
Due to the complex matrix of the sample, it brings difficulties to the detection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Palm bark pretreatment: cut the palm bark into small pieces, wash with water to remove soil and impurities, soak in water for 36 hours in a container, dry in a vacuum and crush to obtain pretreated palm bark;

[0021] (2) Oxygenated palm bark: In the reactor, add 0.4g sodium hydroxide and 53mL deionized water respectively, stir and dissolve, cool to room temperature, add 38mL30% hydrogen peroxide, mix well, then add 8g pretreated palm bark , soaked at room temperature for 24 hours, boiled for 40 minutes, washed with deionized water until neutral after cooling, filtered with suction, and dried at 80°C to obtain oxidized palm bark;

[0022] (3) Preparation of ionic liquid-loaded palm bark adsorbent: In the reactor, add 67mL epichlorohydrin and 20g oxidized palm bark respectively, keep the temperature at 70±2℃, stir, and react for 50min, after cooling, then Add 8g of pyromellitic dianhydride, 5g of N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, keep stirring ...

Embodiment 2

[0025] (1) Palm bark pretreatment: Cut the palm bark into small pieces, wash with water to remove soil and impurities, soak in water for 24 hours in a container, dry in a vacuum and crush to obtain pretreated palm bark;

[0026] (2) Oxidation of palm bark: In the reactor, add 1.0 g of sodium hydroxide and 54 mL of deionized water, stir to dissolve, cool to room temperature, add 33 mL of 30% hydrogen peroxide, mix well, then add 12 g of pretreated palm bark , soak at room temperature for 28 hours, boil for 40 minutes, wash with deionized water until neutral after cooling, filter with suction, and dry at 85°C to obtain oxidized palm bark;

[0027](3) Preparation of ionic liquid-loaded palm bark adsorbent: Add 63mL epichlorohydrin and 10g oxidized palm bark to the reactor, stir and react at 70±2°C for 40min, after cooling, then Add 7g of pyromellitic dianhydride, 8g of N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, keep stirring at 50±2°C, and react for 30h. After cooli...

Embodiment 3

[0029] (1) Palm bark pretreatment: Cut the palm bark into small pieces, wash with water to remove soil and impurities, soak in water for 48 hours in a container, dry in a vacuum and crush to obtain pretreated palm bark;

[0030] (2) Oxidation of palm bark: Add 0.6g of sodium hydroxide and 45mL of deionized water to the reactor, stir to dissolve, cool to room temperature, add 39mL of 30% hydrogen peroxide, mix well, then add 15g of pretreated palm bark , soak at room temperature for 30 h, boil for 40 min, wash with deionized water until neutral after cooling, filter with suction, and dry at 90°C to obtain oxidized palm bark;

[0031] (3) Preparation of ionic liquid-loaded palm bark adsorbent: Add 30mL epichlorohydrin and 6g oxidized palm bark to the reactor, stir and react at 70±2°C for 60min, after cooling, then Add 4g of pyromellitic dianhydride, 5g of N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, keep stirring at 50±2°C, and react for 24 hours. After cooling, filt...

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Abstract

The invention discloses a preparation method of an ionic liquid-loaded palm tree bark adsorbent. The preparation method is characterized by comprising the following steps: after drying and crushing, drying the crushed loofah sponge processed by virtue of sodium hydroxide and hydrogen peroxide, so as to obtain oxidized palm tree bark; adding the following components in a reactor in mass percentage concentration (the sum of the components is 100%), 63-75% of epoxy chloropropane and 10-18% of oxidized palm tree bark, carrying out constant temperature stirring and reaction for 40-60 minutes at 70+ / -2 DEG C, after cooling, adding 4-12% of benzenetetracarboxylic anhydride and 3-8% of N-ethyl-3- methylpyridine tetrafluoroborate ionic liquid, carrying out constant temperature stirring and reaction for 24-30 hours at 50+ / -2 DEG C, carrying out suction filtration after cooling, washing by virtue of deionized water until filtrate is neutral, washing by virtue of a small amount of ethanol, and drying in a vacuum drying oven at 50 DEG C, so as to obtain the ionic liquid-loaded palm tree bark adsorbent. The adsorbent has high adsorption capacity to triclosan, is excellent in physical, chemical and mechanical properties, strong in regeneration capacity and low in cost, can be repeatedly used and is environmentally friendly.

Description

technical field [0001] The present invention relates to the technical field of a preparation method of a biological adsorbent, in particular to a preparation method of an N-ethyl-3-picoline tetrafluoroborate ionic liquid-loaded palm bark adsorbent and its three Application technology of chlorine generation adsorption. Background technique [0002] Ionic liquids are generally composed of specific organic cations (such as imidazole, pyridine) with relatively large volume and asymmetric structure and relatively small inorganic anions (such as Cl - 、Br - etc.) composed of substances that are liquid at or near room temperature. Room temperature ionic liquid is an excellent solvent, which can dissolve polar and non-polar organic and inorganic substances, is easy to separate, and can be recycled. It has a wide liquid range, no vapor pressure, no volatilization, and no environmental pollution. It is known as a green solvent. [0003] Immobilizing the ionic liquid can obtain the ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/36
CPCY02W10/37
Inventor 李慧芝许崇娟魏琴
Owner UNIV OF JINAN
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