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Preparation method of porous polyquaternary ammonium salt gel adsorbent

A polyquaternary ammonium salt and adsorbent technology, which is applied in the field of preparation of porous polyquaternium gel adsorbents, can solve the problems of adsorption and decolorization of printing and dyeing wastewater, achieve strong adsorption and capture ability, and improve the effect of reaction efficiency.

Inactive Publication Date: 2019-11-15
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of preparation method of novel porous polyquaternium salt gel adsorbent, to overcome the deficiency of existing adsorbent to printing and dyeing wastewater adsorption and decolorization

Method used

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  • Preparation method of porous polyquaternary ammonium salt gel adsorbent
  • Preparation method of porous polyquaternary ammonium salt gel adsorbent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Step 1: Take the measured cross-linking quaternary ammonium salt monomer TAMAC and the large molecular volume quaternary ammonium salt monomer CDMAAC [the molar ratio of the two monomers is n (TAMAC) / n (CDMAC) = 95 / 5] join in the reactor that reflux condensing device is housed and be made into the reaction solution that initial monomer solution mass fraction is 55%;

[0027] Step 2: Weigh the initiator ammonium persulfate APS accounting for 1% of the total monomer mass (the sum of TAMAC and CDMAC mass), add it to the reaction solution, stir and mix evenly;

[0028] Step 3: First pass through the three-way ventilation system, with inert protective gas N 2 Replace the air in the reaction system, and then add N 2 The introduction tube was inserted into the reaction mixture for bubbling, and under mechanical stirring, the temperature was raised to 50°C for bubbling cross-linking copolymerization reaction for 0.5 h, and the reaction material was viscous and fluid;

[00...

Embodiment 2

[0034] Step 1: Take the measured cross-linking quaternary ammonium salt monomer TAMAC and the large molecular volume quaternary ammonium salt monomer CDMAAC [the molar ratio of the two monomers is n (TAMAC) / n (CDMAC) = 50 / 50] join in the reactor that reflux condensing device is housed and be made into the reaction solution that initial monomer solution mass fraction is 60%;

[0035] Step: 2: take by weighing the initiator ammonium persulfate APS accounting for 2% of the total monomer mass (TAMAC and CDMAC mass sum), join in the reaction solution, stir and mix;

[0036] Step 3: First pass through the three-way ventilation system, with inert protective gas N 2 Replace the air in the reaction system, and then add N 2 The introduction tube is inserted into the reaction mixture for bubbling, and under mechanical stirring, the temperature is raised to 50-55°C for bubbling cross-linking copolymerization reaction for 1.0 h, and the reaction material is viscous and flowing;

[003...

Embodiment 3

[0042] Step 1: Take the measured cross-linking quaternary ammonium salt monomer TAMAC and the large molecular volume quaternary ammonium salt monomer CDMAC [the molar ratio of the two monomers is n (TAMAC) / n (CDMAC) = 5 / 95] join in the reactor that reflux condensing device is housed and be made into the reaction solution that initial monomer solution mass fraction is 65%;

[0043] Step 2: Weigh the initiator ammonium persulfate APS accounting for 1-3% of the total monomer mass (the sum of TAMAC and CDMAC mass), add it to the reaction solution, stir and mix evenly;

[0044] Step 3: First pass through the three-way ventilation system, with inert protective gas N 2 Replace the air in the reaction system, and then add N 2 The introduction tube was inserted into the reaction mixture for bubbling, and under mechanical stirring, the temperature was raised to 55°C for bubbling cross-linking copolymerization for 1.0 h, and the reaction material was viscous and fluid;

[0045] Step...

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Abstract

The invention discloses a preparation method of a porous polycationic gel adsorbent. A crosslinkable quaternary ammonium salt monomer triallylmethylammonium chloride (TAMAC) and a high-molecular volume quaternary ammonium salt monomer cetyl dimethyl allyl ammonium chloride (CDMAC) which are used as raw materials are subjected to reaction processes such as crosslinking copolymerization, acidification strengthening and evaporation aging to prepare the porous polyquaternary ammonium salt gel adsorbent. The skeleton of the porous polyquaternary ammonium salt gel adsorbent comprises 100% of a polyquaternary ammonium cation unit, has many electrostatic attraction points, and can produce strong dye adsorbing and capturing ability; the porous internal structure of the gel adsorbent has the abilityto retain and adsorb dyes in water; and additionally, the gel adsorbent can provide a large space for absorbing and accommodating anionic dyes after being swelled in water when used as a gel material, so the porous polycationic gel adsorbent has an obviously better printing and dyeing wastewater adsorbing and purifying performance than existing like adsorbents, and also has stable application performances and good application prospects.

Description

technical field [0001] The invention relates to a preparation method of a porous polyquaternium salt gel adsorbent, and specifically belongs to the technical field of adsorbents for wastewater treatment. Background technique [0002] The textile industry is a traditional pillar industry of my country's national economy and an important livelihood industry, as well as an industry with obvious international competitive advantages. In order to meet people's needs for different colors of textile fabrics, it is necessary to dye them; but when dyeing, especially when dyeing deep and thick colors, due to the insufficient dyeing rate, some dyes cannot be fixed on the fabric, resulting in raw materials waste, which in turn leads to the generation of a large amount of colored wastewater. First of all, printing and dyeing wastewater has a large amount of pollution, and the pollution to the environment is very serious. The chroma COD value is generally 8000-40000 mg / kg, and the COD val...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28C02F1/28B01J20/30C08F226/02C02F101/30C02F103/30
CPCB01J20/264B01J20/28047C02F1/285C02F2101/308C02F2103/30C08F226/02
Inventor 余义开李红艳白钰
Owner JIANGXI NORMAL UNIV