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Anionic dye adsorbent as well as preparation method and application thereof

An anionic dye and adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc., can solve the problems of high cost of activated carbon method, poor treatment effect of chemical treatment method, etc. Ideal effect, simple operation effect

Inactive Publication Date: 2012-07-18
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problems of poor chemical treatment effect and high cost of activated carbon method in the existing methods for treating printing and dyeing wastewater, and provides an anionic dye adsorbent and its preparation method and application

Method used

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  • Anionic dye adsorbent as well as preparation method and application thereof
  • Anionic dye adsorbent as well as preparation method and application thereof
  • Anionic dye adsorbent as well as preparation method and application thereof

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Experimental program
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specific Embodiment approach 1

[0036] Specific embodiment one: a kind of anionic dye adsorbent of the present embodiment is quaternary ammonium salt cellulose, and its structural formula is

[0037] Wherein n is a positive integer of 300-800.

[0038] The anionic dye adsorbent of this embodiment is added to the anionic dye wastewater to be treated, and after the anionic dye adsorbent reacts with the anionic dye in the water, it settles quickly in the form of co-precipitation. The operation is simple, no special equipment is required, the sedimentation speed is fast, the wastewater treatment efficiency is high, and the effect is ideal. No other harmful substances will be introduced during the treatment process, and no secondary pollution will be caused.

specific Embodiment approach 2

[0039] Specific embodiment two: the preparation method of the anionic dye adsorbent described in specific embodiment one is carried out according to the following steps:

[0040] 1. After deinking the waste newspaper fiber, crush it to 80-120 mesh to obtain the deinked waste newspaper fiber;

[0041] Two, the mass volume ratio of 20% sodium hydroxide by deinking waste newspaper fiber and mass concentration is 1g: 20~30mL, the mass ratio of deinking waste newspaper fiber and epichlorohydrin is 1: (5~15) , the volume ratio of epichlorohydrin and triethylamine is (1~4): the ratio of 1 weighs deinking waste newspaper fiber, mass concentration is 20% sodium hydroxide, epichlorohydrin and triethylamine;

[0042] 3. Add the deinked waste newspaper fibers weighed in step 2 and sodium hydroxide with a mass concentration of 20% into the container, stir at room temperature for 1h to 2h, and then adjust the pH value to be greater than 13 to obtain a turbid liquid;

[0043] 4. Add the epi...

specific Embodiment approach 3

[0047]Specific embodiment three: the difference between this embodiment and specific embodiment two is that the method for deinking the waste newspaper fiber described in the step one is: according to sodium hydroxide, hydrogen peroxide, sodium silicate, surfactant, waste newspaper Put it in a container at a mass ratio of 5:5:10:1:5:31 with distilled water, stir it in a water bath at 65°C for 1 hour, then wash it, and dry it at 60°C for 5 hours to complete deinking . Others are the same as in the second embodiment.

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Abstract

The invention discloses an anionic dye adsorbent as well as a preparation method and application thereof, relating to a dye adsorbent as well as a preparation method and application thereof, being used for solving the technical problem that in the existing printing / dyeing wastewater treatment methods, a chemical treatment method is poor in the treatment effect, and an activated carbon method is high in cost. The anionic dye adsorbent disclosed by the invention is quaternary ammonium salt cellulose with a structural formula as follows: wherein, n is an integer between 300 and 800. The preparation method comprises the following steps: adding waste newspaper fibers subjected to deinking into a sodium hydroxide solution, then, mixing the two so as to obtain turbid liquid; adding epoxy chloropropane into the turbid liquid to react, then filtering the obtained object so as to obtain a solid-phase object; and adding triethylamine into the solid-phase object to react so as to obtain a coarse product, then carrying out washing and drying on the coarse product, thereby obtaining an anionic dye adsorbent. The preparation method is simple, and easy to operate. The anionic dye adsorbent can beused for anionic dye wastewater treatment. After the anionic dye adsorbent is reacted with anionic dyes in water, the obtained object is sedimented quickly in a coprecipitation form, therefore, the wastewater treatment efficiency is high.

Description

technical field [0001] The invention relates to a dye adsorbent, a preparation method and application thereof. Background technique [0002] my country is the world's largest importer and consumer of waste paper, but the domestic waste paper recycling rate has only reached about 38%, which is still lower than the world average of 47.7% and the level of about 70% in developed countries. There is still a huge gap in waste paper recycling. development potential. [0003] The water quality of printing and dyeing wastewater is complex, with deep color, high content of organic matter and low biodegradability. It is difficult to meet the emission requirements by a single treatment method, and a combination of physical, chemical, and biological methods is required. Italy, Japan and other countries adopt a combination of factory treatment and comprehensive urban sewage treatment for the treatment of printing and dyeing wastewater. At present, domestic printing and dyeing wastewater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 王立娟张潇予谭佳魏新浩
Owner NORTHEAST FORESTRY UNIVERSITY
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