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Preparation method of adsorbent for acid dye wastewater treatment

A technology for wastewater treatment and acid dyes, which is applied in textile industrial wastewater treatment, chemical instruments and methods, and other chemical processes. It can solve problems such as failure to meet discharge standards and difficulties in decolorization of printing and dyeing wastewater, and achieve faster adsorption rates, good adsorption, and The effect of increasing the amount of adsorption

Active Publication Date: 2014-06-11
SAINTYEAR HLDG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a preparation method of an adsorbent for acid dye wastewater treatment, which mainly solves the technical problems in the prior art that the decolorization of printing and dyeing wastewater is relatively difficult and cannot reach the discharge standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: A kind of preparation method of the adsorbent used for the treatment of acid dye wastewater in this example, the steps are: first put 8g of β-cyclodextrin into 1g of citric acid monohydrate, add 1g of PEG-400, 0.25g Sodium dihydrogen phosphate is polymerized into a β-cyclodextrin polymer, and then a silane coupling agent is added to the chitosan solution to cross-link the β-cyclodextrin polymer with chitosan, wherein chitosan: β - When the molar ratio of cyclodextrin to polymer is 1:3, the β-cyclodextrin-chitosan porous membrane can be prepared.

[0019] Among them, the preparation of β-cyclodextrin polymer is at 140°C, and the polymerization time is 4.5h. The reaction between chitosan and silane coupling agent is at 50°C, and the reaction time is 4h. Polycan cross-linking is at 50°C, and the required reaction time is 1h. The β-cyclodextrin-chitosan porous membrane adsorbs Acid Red299, Acid Orange 116, and Acid blue 113 respectively.

[0020] The adsorben...

Embodiment 2

[0021] Embodiment 2: A kind of preparation method of the adsorbent used for the treatment of acid dye wastewater in this example, the steps are: first put 10g of β-cyclodextrin into 2g of citric acid monohydrate, add 1g of PEG-400, 0.25g Sodium dihydrogen phosphate is polymerized into a β-cyclodextrin polymer, and then a silane coupling agent is added to the chitosan solution to cross-link the β-cyclodextrin polymer with chitosan, wherein chitosan: β - When the molar ratio of cyclodextrin to polymer is 1:3, the β-cyclodextrin-chitosan porous membrane can be prepared.

[0022] Among them, the preparation of β-cyclodextrin polymer is at 140°C, and the polymerization time is 4.5h. The reaction between chitosan and silane coupling agent is at 50°C, and the reaction time is 4h. Polycan cross-linking is at 50°C, and the required reaction time is 1h. The β-cyclodextrin-chitosan porous membrane adsorbs Acid Red299, Acid Orange 116, and Acid blue 113 respectively.

[0023] The adsorbe...

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Abstract

The invention relates to the field of functional materials, particularly a preparation method of an adsorbent for acid dye wastewater treatment. The invention mainly solves the technical problem that dyeing wastewater can not be easily decolorized, can not achieve the discharge standard and the like in the prior art. The preparation method comprises the following steps: putting 8-10g of beta-cyclodextrin into 1-2g of citric acid monohydrate, and adding 1g of PEG-400 and 0.25g of sodium dihydrogen phosphate to obtain a beta-cyclodextrin polymer by polymerization; adding a silane coupling agent into a chitosan solution; and cross-linking the beta-cyclodextrin polymer with the chitosan to obtain a beta-cyclodextrin-chitosan porous membrane, wherein the mol ratio of the chitosan to the beta-cyclodextrin polymer is 1:3..

Description

technical field [0001] The invention relates to the field of functional materials, in particular to a method for preparing an adsorbent for acid dye wastewater treatment. Background technique [0002] With the continuous development of my country's industry, industrial wastewater has become a major hazard that disturbs people's lives, of which printing and dyeing wastewater accounts for a relatively large proportion. Printing and dyeing wastewater refers to the mixed wastewater produced by mixing the wastewater discharged from all processes in the printing and dyeing process. Due to the large amount of printing and dyeing wastewater, it contains a certain amount of residual dyes and a large number of dyeing auxiliaries, and contains a certain amount of harmful substances. These residual dyes and auxiliaries constitute the main part of the organic matter in the wastewater and make the wastewater have a special color. Due to the complex composition of printing and dyeing wast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24C02F103/30
Inventor 俞丹吴玲玲徐宁王乐杨杰徐棚棚王炜
Owner SAINTYEAR HLDG GROUP
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