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Environmentally-friendly konjac glucomannan-based dye capturing and settling agent, and preparation method and application thereof

A konjac glucomannan and glucomannan-based technology, applied in chemical instruments and methods, water pollutants, flocculation/sedimentation water/sewage treatment, etc., can solve problems such as slow sedimentation speed and inability to quickly treat dye wastewater , to achieve the effect of less residue, efficient capture of dyes and heavy metal ions, and strong adaptability

Active Publication Date: 2018-04-20
重庆弘脉天下农业发展有限公司
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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 dye capture and sedimentation agent, and its preparation steps are as follows:

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

[0024]Take 1 part of konjac glucomannan (KGM), add 150 parts of water, control the temperature at 45°C, and dissolve for 0.5 hours; under nitrogen protection, add 0.2 parts of initiator azodiisobutylamidine hydrochloric acid Salt V-50, 8 parts of acrylic acid (AA), 8 parts of dimethylaminoethyl methacrylate (DMAEMA) and 3 parts of N-vinylformamide (NVF), graft copolymerization for 3 hours, cool down to stop the reaction ; After adding 150 parts of ethanol for precipitation separation, filtration and drying, high-purity konjac glucomannan-grafting-poly(acrylic acid-random-dimethylaminoethyl methacrylate-random-N- vinylformamide) copolymer (KGM-g-P(AA-r-DMAEMA-r-NVF)), in which g represents grafting, and r represents random copolymerization; the graft ratio of acrylic acid was dete...

Embodiment 2

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

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

[0034] Take 2 parts of konjac glucomannan (KGM), add 200 parts of water, control the temperature at 50°C, and dissolve for 0.7 hours; under nitrogen protection, add 0.3 parts of initiator azodiisobutylamidine hydrochloric acid Salt V-50, 15 parts of acrylic acid (AA), 15 parts of dimethylaminoethyl methacrylate (DMAEMA) and 6 parts of N-vinylformamide (NVF) were grafted and copolymerized for 6 hours, and the reaction was stopped by cooling down ; After adding 200 parts of ethanol for precipitation separation, filtration and drying, high-purity konjac glucomannan-grafting-poly(acrylic acid-random-dimethylaminoethyl methacrylate-random-N- vinylformamide) copolymer (KGM-g-P(AA-r-DMAEMA-r-NVF)), in which g represents grafting, and r represents random copolymerization; the graft ratio...

Embodiment 3

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

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

[0044] Take 3 parts of konjac glucomannan (KGM), add 300 parts of water, control the temperature at 60 ° C, and dissolve for 0.9 hours; under nitrogen protection, add 0.6 parts of initiator azodiisobutylamidine hydrochloric acid Salt V-50, 25 parts of acrylic acid (AA), 25 parts of dimethylaminoethyl methacrylate (DMAEMA) and 8 parts of N-vinylformamide (NVF), graft copolymerization for 10 hours, cool down to stop the reaction ; After adding 300 parts of ethanol for precipitation separation, filtration and drying, high-purity konjac glucomannan-grafting-poly(acrylic acid-random-dimethylaminoethyl methacrylate-random-N- vinylformamide) copolymer (KGM-g-P(AA-r-DMAEMA-r-NVF)), in which g represents grafting, and r represents random copolymerization; the graft ratio of acrylic acid w...

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Abstract

The invention relates to an environmentally-friendly konjac glucomannan-based dye capturing and settling agent, and a preparation method and an application thereof. The environmentally-friendly konjacglucomannan-based dye capturing and settling agent is prepared from konjac glucomannan, water, an initiator 2,2'-azobis(2-methylpropionamidine) dihydrochloride V-50, acrylic acid, dimethylaminoethylmethacrylate, N-vinylformamide, 1,2-cyclohexanediaminetetraacetic acid dianhydride, potassium hydroxide and carbon disulfide, and the environmentally-friendly konjac glucomannan-based dye capturing and settling agent is used to treat dye wastewater or art paint wastewater discharged in the dye synthesis process or the dyeing and finishing process. The environmentally-friendly konjac glucomannan-based dye capturing and settling agent has the advantages of strong trapping capability, fast settlement speed, realization of treatment of complexation type heavy metal ions, realization of capturing dye molecules and the complex heavy metal ions in seconds, quickness in growth for becoming large settled particles, achieving of the purpose of rapid separation of dyes and heavy metal ions, non-toxicity, environmental protection, easiness in degradation, no secondary pollution in the use process, easiness in operation, low treatment cost and strong adaptability.

Description

technical field [0001] The invention belongs to the field of biomass material and dye wastewater treatment, and in particular relates to an environment-friendly konjac glucomannan-based dye capture and sedimentation agent and a preparation method and application thereof. Used in dye wastewater or art paint wastewater, it can simultaneously remove cationic dyes, anionic dyes and complex heavy metal ions. 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%, and dye wastewater accounts for 35% of the total industrial wastewater discharge, and it is also increasing at a rate of 1% year by year. It comes from dye synthesis and dye use enterprises; dye wastewater is composed of dyes and auxiliaries discharged during synthesis or dyeing and finishing. With the rapid development of the printing and dyeing industry, my country is a big country in textile production and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F251/00C08F220/06C08F220/34C08F226/02C08F8/34C08F8/30C08F8/12C02F1/56C02F101/20
CPCC02F1/56C02F2101/20C02F2101/308C08F8/34C08F251/00C08F220/06C08F220/34C08F226/02C08F8/30C08F8/12
Inventor 刘锋霍应鹏陈燕舞张浥琨郭志杰洪丹彭琦唐秋实
Owner 重庆弘脉天下农业发展有限公司
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