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Method for preparing magnetic hydrophobic modified cationic polyacrylamide oil-removing flocculating agent

A polyacrylamide, hydrophobic modification technology, applied in the preparation of magnetic hydrophobic modified cationic polyacrylamide oil removal flocculant, the preparation of water-soluble magnetic organic polymer water treatment oil removal flocculant, can solve the problem of polyacrylamide Insufficient adsorption, hydrophobic monomers are easy to self-polymerize, and cannot be recycled, etc., to achieve the effect of improving solid-liquid separation performance, good lipophilic performance, and reducing hydraulic retention time

Active Publication Date: 2017-12-22
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention solves the problems of easy self-polymerization of hydrophobic monomers, large heat release, high temperature, and difficult sedimentation of traditional polymerization methods, and improves the traditional polyacrylamide with insufficient adsorption, long dissolution time, and unrecyclable Utilize and other problems, provide a synthetic method of a highly adsorbent, fast-precipitating magnetic hydrophobic and lipophilic modified cationic polyacrylamide flocculant with simple preparation process, mild reaction conditions, energy saving and environmental protection, and easy industrialization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) take mass fraction (accounting for monomer total mass ratio) be 20% lauryl glucoside, 20% dimethyl diallyl ammonium chloride and 60% acrylamide, dissolve in magnetic stirring In ultrapure water, after reaching the state of complete dissolution, add the photoinitiator 2-hydroxyl-4'-(2-hydroxyethoxy)-2-methylpropiophenone with a mass fraction of 1‰ in the solution, stir to make it Completely dissolve, adjust the pH to 9, and then pass through nitrogen with a purity of 99.999% for 15 minutes to drive off oxygen, and place the bottle mouth sealed under a low-pressure ultraviolet lamp with a power of 20W and a wavelength of 253.7nm for 1 hour at a room temperature of 15°C. Afterwards, a milky white jelly was obtained.

[0020] (2) Wrap the jelly with filter paper in acetone solution and purify in a Soxhlet extractor for 24 hours, rinse with distilled water, dry at 105°C for 24 hours, grind and sieve to obtain a white powder sample. After analysis and detection, the intr...

Embodiment 2

[0024] (1) take mass fraction (accounting for monomer total mass ratio) be 20% lauryl glucoside, 40% dimethyl diallyl ammonium chloride and 40% acrylamide, dissolve in In ultrapure water, after reaching the state of complete dissolution, add the photoinitiator 2-hydroxyl-4'-(2-hydroxyethoxy)-2-methylpropiophenone with a mass fraction of 1‰ in the solution, stir to make it Completely dissolve, adjust the pH to 7, and then pass through nitrogen with a purity of 99.999% for 15 minutes to drive off oxygen, and place the bottle mouth sealed under a low-pressure ultraviolet lamp with a power of 40W and a wavelength of 253.7nm for 2 hours at a room temperature of 20°C. Afterwards, a milky white jelly was obtained.

[0025] (2) Wrap the jelly with filter paper in acetone solution and purify in a Soxhlet extractor for 24 hours, rinse with distilled water, dry at 105°C for 24 hours, grind and sieve to obtain a white powder sample. After analysis and detection, the intrinsic viscosity o...

Embodiment 3

[0029] (1) getting mass fraction (accounting for monomer total mass ratio) is 30% coconut oil fatty acid diethanolamide, 20% dimethyl diallyl ammonium chloride and 50% acrylamide, dissolves in In ultrapure water, after reaching the state of complete dissolution, add the photoinitiator 2-hydroxyl-4'-(2-hydroxyethoxy)-2-methylpropiophenone with a mass fraction of 1‰ in the solution, stir to make it Dissolve completely, adjust the pH to 5, and then pass through nitrogen with a purity of 99.999% for 15 minutes to drive off oxygen. At 2°C, seal the bottle mouth and place it under a low-pressure ultraviolet lamp with a power of 80W and a wavelength of 185nm for 3 hours. A milky white jelly was obtained.

[0030] (2) Wrap the jelly with filter paper in acetone solution and purify in a Soxhlet extractor for 24 hours, rinse with distilled water, dry at 105°C for 24 hours, grind and sieve to obtain a white powder sample. After analysis and detection, the intrinsic viscosity of the fina...

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Abstract

The invention provides a method for preparing a magnetic hydrophobic modified cationic polyacrylamide oil-removing flocculating agent and belongs to the technical field of environmental-friendly water treatment. The method comprises the following steps: dissolving dodecyl glucoside (or cocoanut fatty acid diethanolamide), dimethyl diallyl ammonium chloride, acrylamide and a photoinitiator in water, regulating the pH value, introducing nitrogen and sealing the reactor, performing photopolymerization under a low-voltage ultraviolet lamp so as to produce lacteous colloid; and dissolving the colloid in ultrapure water, adding magnetic nanometer iron oxide particles and ammonium persulfate to stir, washing, drying, grinding, and finally obtaining the black powdered oil-removing flocculating agent. According to the method disclosed by the invention, the polymerization time is short, the reaction temperature is low, condensation cooling is not needed, and energy conservation and consumption reduction are realized; due to the introduction of a hydrophobic monomer, the hydrophilic property of the flocculating agent is reduced, the adsorptive property of oil substances is enhanced, and the demulsification ability of the flocculating agent is enhanced; and due to the introduced magnetic nanometer iron oxide particles, under the action of an additional magnetic field, the flocculating agent is high in settling speed and easy to separate.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment, in particular to a preparation method of a water-soluble magnetic organic polymer water treatment oil removal flocculant, in particular to a preparation method of a magnetic hydrophobic modified cationic polyacrylamide oil removal flocculant. Background technique [0002] With the development of industry, the use of oil products is increasing. A large amount of oily wastewater will be produced in the oil extraction, oil refining, oil storage, transportation process and petrochemical industry production process of the petroleum industry. Due to the lagging behind of various technologies A large amount of oil enters the water body due to reasons such as environmental pollution and imperfect management, causing pollution, affecting drinking water resources and groundwater resources, endangering aquatic resources; human health; polluting the atmosphere; affecting crop ...

Claims

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Application Information

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IPC IPC(8): C08F8/42C08F8/02C08F220/56C08F226/02C08F2/48C02F1/56
CPCC02F1/56C08F2/48C08F8/42C08F220/56C08F8/02C08F226/02
Inventor 马江雅施军付雪蒋立言付坤
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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