Method for preparing adsorbent by modifying attapulgite clay

A technology of attapulgite clay and adsorbent, which is applied in the field of adsorbent preparation, can solve the problem of decolorization of wastewater that cannot contain dyes, etc., and achieves the effects of reduced production cost, low preparation cost and good decolorization effect.

Inactive Publication Date: 2010-03-03
HUAIYIN TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

General physical and chemical treatment methods often cannot effectively decolorize dye-containing wastewater. Adsorption is especially suitable for the decolorization of dyes and dyeing wastewa

Method used

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  • Method for preparing adsorbent by modifying attapulgite clay
  • Method for preparing adsorbent by modifying attapulgite clay

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Add 3.0 grams of attapulgite clay to 50.0 mL of toluene, adjust the temperature to 30 °C, slowly add 1.5 ml of γ-aminopropyltrimethoxysilane during stirring, and react for 2 hours; filter, wash, dry and pulverize the reaction product over 200 mesh sieve to obtain a γ-aminopropyltriethoxysilane coupling agent-modified adsorbent. 0.3 g of the adsorbent was decolorized with reactive red 3BS150% dye wastewater, and the concentration was 100 mg / L reactive red 3BS150% dye 50ml, oscillating at a constant temperature in a water bath at 20°C for 30 minutes, centrifuging at 3000r / min for 10 minutes, separating solid-liquid two-phase, supernatant The decolorization effect of the liquid is obvious, and the decolorization rate of the active red is 88.12%.

Embodiment 2

[0021] Add 4.5 grams of attapulgite clay to 100.0 mL of toluene, adjust the temperature to 45 °C, slowly add 3.0 ml of γ-aminopropyltriethoxysilane during stirring, and react for 3 hours; filter, wash, dry and pulverize the reaction product 200 mesh sieve to obtain the adsorbent modified by γ-aminopropyltriethoxysilane coupling agent. 0.3 g of the adsorbent was decolorized with reactive red 3BS150% dye wastewater, and the concentration was 100 mg / L reactive red 3BS150% dye 50ml, oscillating at a constant temperature in a water bath at 20°C for 30 minutes, centrifuging at 3000r / min for 10 minutes, separating solid-liquid two-phase, supernatant The decolorization effect of the liquid is obvious, and the decolorization rate of the active red is 98.43%.

Embodiment 3

[0023] Add 6.0 grams of attapulgite clay to 150.0 mL of toluene, adjust the temperature to 60 ° C, slowly add 4.5 ml of N-(β-aminoethyl)-γ-aminopropyltrimethoxysilane during stirring, and react for 4 hours; The reaction product is filtered, washed, dried, and crushed through a 200-mesh sieve to obtain a γ-aminopropyltriethoxysilane coupling agent-modified adsorbent. 0.3 g of the adsorbent was decolorized with reactive red 3BS150% dye wastewater, and the concentration was 100 mg / L reactive red 3BS150% dye 50ml, oscillating at a constant temperature in a water bath at 20°C for 30 minutes, centrifuging at 3000r / min for 10 minutes, separating solid-liquid two-phase, supernatant The decolorization effect of the liquid is obvious, and the decolorization rate of the active red is 99.73%.

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Abstract

The invention discloses a method for preparing an adsorbent by modifying attapulgite clay. A silicon hydroxyl group on the surface of the attapulgite clay is used to react with an amino silane coupling agent to obtain the adsorbent the surface of which has an amino functional group. The preparation method is simple and easy to operate, as well as has wide application prospect. The adsorbent has excellent adsorption property for reactive dye, heavy metal, a dye intermediate with a sulfonic acid group and organic acid.

Description

technical field [0001] The invention relates to a method for preparing an adsorbent, in particular to a method for modifying attapulgite clay to prepare the adsorbent. Background technique [0002] With the rapid development of the dye industry, the pollution problems caused by dyes and dyeing production wastewater are becoming more and more serious, and the treatment is becoming more and more difficult. Synthetic dyes have complex aromatic hydrocarbon molecular structures, various types, stable properties, and are difficult to biodegrade. Therefore, as far as the treatment of dye wastewater is concerned, the first thing to solve is the problem of decolorization. General physical and chemical treatment methods often cannot effectively decolorize dye-containing wastewater. Adsorption is especially suitable for the decolorization of dyes and dyeing wastewater that are difficult to biochemically degrade. The selection and development of adsorption materials are the key to the d...

Claims

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Application Information

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IPC IPC(8): B01J20/12B01J20/30
Inventor 周守勇赵宜江薛爱莲褚效中李梅生张艳
Owner HUAIYIN TEACHERS COLLEGE
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