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Environment-friendly anionic dye trapping agent as well as preparation method and application thereof

An anionic dye, environment-friendly technology, applied in the field of environment-friendly anionic dye collector and preparation thereof, can solve the problems of inability to quickly treat dye wastewater, slow settling speed, etc., and achieves less secondary pollution and less sludge. , easily degradable effect

Inactive Publication Date: 2018-04-17
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

[0022] It is an environment-friendly anionic dye collector, and its preparation steps are as follows:

[0023] Synthesis of Step 1 KGM-g-P(DAEMA-r-NVF)

[0024] Add 2 parts of konjac glucomannan (KGM) to 50 parts of water, control the temperature at 48°C, and dissolve for 0.5 hours; under the protection of nitrogen, add 0.1 part of the initiator azobisisobutylamidine hydrochloride V- 50, 5 parts of diethylaminoethyl methacrylate (DAEMA) and 4 parts of N-vinyl formamide (NVF), grafted and copolymerized for 4 hours, cooled to stop the reaction; added 50 parts of ethanol for precipitation and separation, filtered And after drying, obtain highly pure 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 are used to measure the grafting rate of diethylaminoethyl methacrylate to 23%, and the grafting rate of N-vinylformamide is 5%;

[0025] Step...

Embodiment 2

[0032] It is an environment-friendly anionic dye collector, and its preparation steps are as follows:

[0033] Synthesis of Step 1 KGM-g-P(DAEMA-r-NVF)

[0034] Add 3 parts of konjac glucomannan (KGM) to 150 parts of water, control the temperature at 55°C, and dissolve for 0.7 hours; under the protection of nitrogen, add 0.6 parts of the initiator azobisisobutylamidine hydrochloride V -50, 14 parts of diethylaminoethyl methacrylate (DAEMA) and 9 parts of N-vinyl formamide (NVF), grafted and copolymerized for 7 hours, cooled to stop the reaction; added 150 parts of ethanol for precipitation and separation, After filtering and drying, 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 are used to measure the grafting rate of diethylaminoethyl methacrylate to 46%, and the N-vinyl formamide grafting rate is 11%;

[0035] Step 2 ...

Embodiment 3

[0042] It is an environment-friendly anionic dye collector, and its preparation steps are as follows:

[0043] Synthesis of Step 1 KGM-g-P(DAEMA-r-NVF)

[0044] Add 4 parts of konjac glucomannan (KGM) to 180 parts of water, control the temperature at 65°C, and dissolve for 0.7 hours; under the protection of nitrogen, add 0.7 parts of the initiator azobisisobutylamidine hydrochloride V -50, 17 parts of diethylaminoethyl methacrylate (DAEMA) and 13 parts of N-vinylformamide (NVF), grafted and copolymerized for 15 hours, cooled to stop the reaction; added 180 parts of ethanol for precipitation and separation, After filtering and drying, 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 measure the grafting rate of diethylaminoethyl methacrylate to be 78%, and the N-vinylformamide grafting rate to be 19%;

[0045] ...

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Abstract

The invention relates to an environment-friendly anionic dye trapping agent as well as a preparation method and application thereof. The environment-friendly anionic dye trapping agent is characterized by being prepared from konjac glucomannan, diethylaminoethyl methacrylate, N-vinyl formamide, water, a water soluble initiator azo diisobutyl amidine hydrochloride V-50, potassium hydroxide and glycol-bis-(2-aminoethylether)-N,N,N',N'-tetraacetic acid dianhydride, and strong trapping capability of the environment-friendly anionic dye trapping agent is used for treating anionic dye wastewater discharged in a dye synthesis or dyeing and finishing process and wastewater discharged by artistic coating industry. The environment-friendly anionic dye trapping agent provided by the invention has theadvantages that settling rate is high, low-concentration complex heavy metal ions can be treated, anionic dye molecules and the complex heavy metal ions can be trapped within seconds, large sedimented particles can rapidly grow, the aim of separating the anionic dye and the heavy metal ions is realized, the environment-friendly anionic dye trapping agent is non-toxic, environment-friendly and easily degradable, secondary pollution is hardly caused in a using process, operation is easy, treatment cost is low and adaptability is strong.

Description

technical field [0001] The invention belongs to the field of biomass materials and waste water treatment, and in particular relates to an environmentally friendly anionic dye collector and its preparation method and application. Used in the wastewater discharged from the paint industry. Background technique [0002] In recent years, my country's annual sewage discharge has reached more than 39 billion tons, of which industrial sewage accounts for 51%, while dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is increasing at a rate of 1% year by year. Dye wastewater is composed of dyes and auxiliaries discharged during the synthesis or dyeing and finishing process, mainly from dye synthesis and dye use enterprises, such as printing and dyeing industry and coating industry. With the rapid development of the printing and dyeing industry, my country is a big country in textile production and processing. The export volume of textiles has ranked ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/34C08F226/02C08F8/32C08F8/12C02F1/56C02F101/20C02F103/30
CPCC08F251/00C02F1/56C02F2101/20C02F2101/308C02F2103/30C08F8/12C08F8/32C08F220/34C08F226/02
Inventor 刘锋霍应鹏陈燕舞张浥琨郭志杰洪丹彭琦唐秋实李为山
Owner SHUNDE POLYTECHNIC
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