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
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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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