Preparation method and application of hydrosulphonyl functionalized loofah

The technology of loofah and sulfhydryl group is applied in the field of preparation of sulfhydryl-functionalized loofah, which can solve the problems of small adsorption capacity of adsorbents, and achieve the effects of high adsorption efficiency, fast speed and good physical and chemical stability.

Inactive Publication Date: 2012-01-25
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The adsorption capacity of the adsorbent for metal ions in the water system obtained by using loofah or loofah chemical modification is relatively small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Loofah pretreatment: loofah is derived from loofah fruit, which is obtained by peeling and removing the core, cutting loofah into small pieces, washing with water, drying in vacuum, crushing, and sieving with an 80-mesh sieve;

[0013] (2) by 50% of the total mass of the sponge gourd that pulverizes, be that the NaOH solution of 1.5mol / L and 20% ethanol solution mix and submerge azeotropic 2h with concentration, add NaOH solution and ethanol mixed solution constantly during azeotropic period, with Keep the volume of the solution constant, wash with deionized water until the pH is 7 after cooling, and dry at 60°C after suction filtration to obtain alkalized loofah.

[0014] (3) In a stoppered Erlenmeyer flask, add 20mL of thioglycolic acid (filter out the precipitate) and 16mL of tetrahydrofuran, add two drops of concentrated sulfuric acid, mix well, add 10g of already alkalized loofah, stopper, and place at a constant temperature of 40°C for 48h , and then washed wi...

Embodiment 2

[0016] (1) Loofah pretreatment: loofah is derived from loofah fruit, which is obtained by peeling and removing the core, cutting loofah into small pieces, washing with water, drying in vacuum, crushing, and sieving with an 80-mesh sieve;

[0017] (2) the loofah of pulverizing is by 50% of gross mass, is that the NaOH solution of 1.5mol / L and 20% ethanol solution are mixed and submerged in azeotropic 1h with concentration, constantly adds NaOH solution and ethanol mixed solution during azeotropy, with Keep the volume of the solution constant, then irradiate intermittently with 450W microwave for 20 minutes, wash with deionized water until the pH is 7 after cooling, and dry at 60°C after suction filtration to obtain alkalized loofah.

[0018] (3) In a stoppered Erlenmeyer flask, add 20 mL of thioglycolic acid (filter out the precipitate) and 16 mL of tetrahydrofuran, add two drops of concentrated sulfuric acid, mix well, add 10 g of alkalized loofah, stopper, and stir at 70 ° C ...

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Abstract

The invention discloses a preparation method and an applied technology of hydrosulphonyl functionalized loofah, wherein the preparation method is characterized by comprising the following steps: adding thioglycolic acid, tetrahydrofuran, alkalized loofah and concentrated sulfuric acid into a triangular flask with a plug according to mass percentage, plugging, placing the triangular flask at the temperature of 40 DDEG C for 48 hours, then washing with deionized water, filtrating through suction until a filtrate is neutral, washing with a small amount of ethanol, and then putting into a baking oven with the temperature of 35 DEG C for drying to obtain the hydrosulphonyl functionalized loofah. The obtained hydrosulphonyl functionalized loofah has large adsorptive capacity for metallic ions, hydrosulphonyl characteristics, high adsorption efficiency, high adsorption speed, strong selectivity, good desorption performance, good physicochemical stability, excellent mechanical stability and regeneration capacity, can directly adsorb and elute various metallic ions in a water body, and can be used in a wider acid-base range.

Description

technical field [0001] The invention relates to a preparation method and application technology of an adsorbent for metal ions in a water system, in particular to a preparation method and application technology of a mercapto-functionalized loofah. Background technique [0002] The application of domestic loofah as adsorbent in metal ion adsorption, the patent application number is 200810034734.6 discloses the application of loofah to the adsorption performance of various metal ions and the application of loofah as adsorbent in metal ion adsorption, wherein loofah has Cu 2+ and Zn 2+ The desorption rate is about 40%, and the loofah has a good effect on Cu 2+ The adsorption capacity of Zn is 0.16mmol / g, respectively. 2+ The adsorption capacity of loofah is about 0.39mmol / g, and in the system with pH of 1, the desorption rates are 46% and 47% respectively; the alkalization modification method and application of loofah are disclosed in the patent application number 2008100347...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30C02F1/28
Inventor 李慧芝许崇娟
Owner UNIV OF JINAN
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