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Environment-friendly konjac glucomannan based anionic dye capture settling agent as well as preparation method and application thereof

A technology of glucomannan-based anion and konjac glucomannan is applied in the field of environment-friendly konjac glucomannan-based anionic dye capture and sedimentation agent and preparation, and can solve the problems of slow sedimentation speed and inability to quickly treat dye wastewater and the like , to achieve the effect of less sludge, less secondary pollution, and less easy degradation

Inactive Publication Date: 2018-02-16
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 konjac glucomannan-based anionic dye capture and sedimentation agent, and its preparation method is as follows:

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

[0024]Add 150 parts of water to 1 part of konjac glucomannan (KGM), 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, 8 parts of diethylaminoethyl methacrylate (DAEMA) and 3 parts of N-vinylformamide (NVF), grafted and copolymerized for 2 hours, cooled to stop the reaction; added 150 parts of ethanol for precipitation and separation , after filtering and drying, 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 23%, and the N-...

Embodiment 2

[0032] It is an environment-friendly konjac glucomannan-based anionic dye capture and sedimentation agent, and its preparation method is as follows:

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

[0034] Take 2 parts of konjac glucomannan (KGM), add 250 parts of water, control the temperature at 50°C, and dissolve for 0.7 hours; under the protection of nitrogen, add 0.4 parts of the initiator azobisisobutylamidine hydrochloride Salt V-50, 20 parts of diethylaminoethyl methacrylate (DAEMA) and 6 parts of N-vinylformamide (NVF), grafted and copolymerized for 6 hours, cooled to stop the reaction; added 250 parts of ethanol for precipitation After separation, filtration 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 determine the grafting rate of diethylaminoethyl methacrylate to be 48%, and the g...

Embodiment 3

[0042] It is an environment-friendly konjac glucomannan-based anionic dye capture and sedimentation agent, and its preparation method is as follows:

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

[0044] Add 4 parts of konjac glucomannan (KGM), add 350 parts of water, control the temperature at 60°C, and dissolve for 0.7 hours; under the protection of nitrogen, add 0.7 parts of the initiator azobisisobutylamidine hydrochloride V-50, 30 parts of diethylaminoethyl methacrylate (DAEMA) and 8 parts of N-vinylformamide (NVF), grafted and copolymerized for 15 hours, cooled to stop the reaction; added 350 parts of ethanol for precipitation and separation , after filtering and drying, 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 75%, and...

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Abstract

The invention relates to an environment-friendly konjac glucomannan based anionic dye capture settling agent as well as a preparation method and application thereof. The environment-friendly konjac glucomannan based anionic dye capture settling agent is characterized by being prepared from konjac glucomannan, water, initiators of 2,2'-azobis[2-methylpropionamidine]dihydrochloride V-50, 2-diethylaminoethyl methacrylate, N-vinylformamide, 1,2-cyclohexanediamine tetraacetic dianhydride, potassium hydroxide and carbon disulfide; the environment-friendly konjac glucomannan based anionic dye capturesettling agent is used for treating anionic dye wastewater discharged in the dye synthesis or dyeing and finishing process and wastewater discharged in art paint industry. The environment-friendly konjac glucomannan based anionic dye capture settling agent has the advantages that the capture capability is high; the settling speed is high; low-concentration complex heavy metal ions can be treated;anionic dye molecules and complex heavy metal ions can be captured in multiple seconds; large settling particles can fast grow; the goal of fast separating anionic dye and heavy metal ions is achieved; no toxicity exists; the environment is protected; the degradation is easy; secondary pollution cannot be easily caused in the use process; the operation is simple and convenient; the treatment costis low; adaptability is high, and the like.

Description

technical field [0001] The invention belongs to the field of biomass materials and waste water treatment, and specifically relates to an environment-friendly konjac glucomannan-based anionic dye capture and sedimentation agent, its preparation method and application, which is mainly the anionic type discharged during the dye synthesis or dyeing and finishing process. Used in dye wastewater and wastewater discharged from the art 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 ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/52C02F101/20
CPCC02F1/56C02F1/5236C02F2101/20
Inventor 刘锋路风辉陈燕舞霍应鹏张浥琨郭志杰洪丹彭琦唐秋实
Owner SHUNDE POLYTECHNIC
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