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High-performance anionic dye trapping agent as well as preparation method and application thereof

A technology of anionic dyes and scavengers, applied in chemical instruments and methods, water pollutants, water/sludge/sewage treatment, etc., can solve the problems of inability to quickly process dye wastewater, slow settling speed, etc., and is not easy to secondary pollution. , rapid settlement, to solve the effect of slow settlement

Inactive Publication Date: 2018-03-23
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main defect of chitosan degradable coagulant to treat dye wastewater is that the sedimentation speed is slow, and it cannot quickly treat dye wastewater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] It is a high-performance anionic dye scavenger, and its preparation method is as follows:

[0020] Step 1 Synthesis of KGM-g-P(DAEMA-r-NVF)

[0021] Take 1 part of konjac glucomannan (KGM), add 60 parts of water, control the temperature at 45°C, and dissolve for 0.5 hours; under the protection of nitrogen, add 0.1 part of the initiator azobisisobutylamidine hydrochloride V-50, 9 parts of diethylaminoethyl methacrylate (DAEMA) and 2 parts of N-vinyl formamide (NVF), graft copolymerization for 4 hours, cooling down to stop the reaction; add 60 parts The ethanol was separated by precipitation, filtered and dried to obtain high-purity konjac glucomannan-graft-poly(diethylaminoethyl methacrylate-random-N-vinyl formamide) copolymer (KGM- g-P(DAEMA-r-NVF)); Elemental analysis and nuclear magnetic resonance instrument analysis were used to determine that the grafting rate of diethylaminoethyl methacrylate was 16%, and the grafting rate of N-vinylformamide was 1.4%;

[0022] S...

Embodiment 2

[0027] It is a high-performance anionic dye scavenger, and its preparation method is as follows:

[0028] Step 1 Synthesis of KGM-g-P(DAEMA-r-NVF)

[0029] Take 2 parts of konjac glucomannan (KGM), add 100 parts of water, control the temperature at 60°C, and dissolve for 0.7 hours; under the protection of nitrogen, add 0.6 parts of the initiator azobisisobutylamidine hydrochloride V-50, 19 parts of diethylaminoethyl methacrylate (DAEMA) and 3 parts of N-vinyl formamide (NVF), graft copolymerization for 12 hours, cooling down to stop the reaction; add 100 parts The ethanol was separated by precipitation, filtered and dried to obtain high-purity konjac glucomannan-graft-poly(diethylaminoethyl methacrylate-random-N-vinyl formamide) copolymer (KGM- g-P(DAEMA-r-NVF)). The grafting rate of diethylaminoethyl methacrylate measured by elemental analysis and nuclear magnetic resonance instrument analysis is 43%, and the grafting rate of N-vinylformamide is 2.3%;

[0030] Step 2 Synth...

Embodiment 3

[0035] It is a high-performance anionic dye scavenger, and its preparation method is as follows:

[0036] Step 1 Synthesis of KGM-g-P(DAEMA-r-NVF)

[0037] Take 5 parts of konjac glucomannan (KGM), add 200 parts of water, control the temperature at 80°C, and dissolve for 1 hour; under the protection of nitrogen, add 1 part of the initiator azobisisobutylamidine hydrochloride V-50, 30 parts of diethylaminoethyl methacrylate (DAEMA) and 4 parts of N-vinyl formamide (NVF), graft copolymerization for 18 hours, cool down to stop the reaction; add 200 parts The ethanol was separated by precipitation, filtered and dried to obtain high-purity konjac glucomannan-graft-poly(diethylaminoethyl methacrylate-random-N-vinyl formamide) copolymer (KGM- g-P(DAEMA-r-NVF)); Elemental analysis and nuclear magnetic resonance instrument analysis were used to determine the grafting rate of diethylaminoethyl methacrylate to be 94%, and the grafting rate of N-vinylformamide to be 2.8%;

[0038] Step ...

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Abstract

The invention relates to a high-performance anionic dye trapping agent as well as a preparation method and an application thereof. The high-performance anionic dye trapping agent is characterized by being prepared from konjac glucomannan, 2-diethylaminoethyl methacrylate, N-vinylformamide, water, water-soluble initiator azobis(isobutylamidine) hydrochloride V-50, potassium hydroxide and carbon disulfide, and the high-performance anionic dye trapping agent is used for treating anionic dye wastewater and artistic coating wastewater drained in the dye synthesis or dyeing and finishing process. The high-performance anionic dye trapping agent has the characteristics of being high in trapping capability and settling speed, capable of trapping anionic dye molecules in a few seconds and growing into large settling particles rapidly to achieve the purpose of rapid dye separation, free from causing no secondary environmental pollution, simple to operate, low in treatment cost, high in adaptability and the like.

Description

technical field [0001] The invention belongs to the field of biomass materials and dye wastewater treatment, and in particular relates to a high-performance anionic dye scavenger and its preparation method and application, which mainly discharges anionic dye wastewater and art paint wastewater during dye synthesis or dyeing and finishing processes in the application. Background technique [0002] Traditional wastewater treatment methods include physical and chemical methods, chemical coagulation methods, physical adsorption methods, biochemical methods, and electrochemical methods. The chemical coagulation method is to add a coagulant to the dye wastewater to make the pollutants form colloidal particles, and remove the pollutants in the wastewater through coagulation precipitation or air flotation. The coagulation-sedimentation method is the most widely used in practice. Coagulation can simultaneously remove dye pollutants and other macromolecular suspended pollutants. Th...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/34C08F226/02C08F8/34C08F8/12C02F1/56C02F1/52C02F101/30
CPCC08F251/00C02F1/5236C02F1/56C02F2101/308C08F8/12C08F8/34C08F220/34
Inventor 陈燕舞刘锋洪丹张浥琨郭志杰霍应鹏唐秋实彭琦
Owner SHUNDE POLYTECHNIC
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