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Preparation and application of water-soluble macromolecule heavy-metal collector

A heavy metal collector and water-soluble macromolecule technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of high organic carbon content in discharged water, water-soluble Poor performance, secondary pollution and other problems, to achieve the effect of easy operation, cheap price and good water solubility

Inactive Publication Date: 2012-09-12
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, low molecular weight recapture agents, sulfides, etc. remain in the water, which will cause secondary pollution and increase the total organic carbon content of the discharged water.
Werneke M. F. et al. ( Mining Engineering, 1978, 30(1): 72-76) synthesized alkyl dithiocarbamate heavy metal collectors, but the disadvantages such as small alum flowers, toxicity, and poor water solubility limit its use. use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Synthesis of the macromolecular skeleton of the heavy metal scavenger: Dissolve a total of 1 mol of ethylenediamine (0.9 mol) and triethylenetetramine (0.1 mol) in 100 mL of water to prepare a small molecule amine-water solution. Slowly add 1.071mol epichlorohydrin dropwise to the small molecule amine-water solution, and finish adding within 3 hours, then react at 40°C for 3 hours, and stand overnight without stirring or heating. Pour the above overnight solution into a four-necked flask, and while stirring, continue to dropwise add 0.129mol of epichlorohydrin, and at the same time add dropwise 72mL of sodium hydroxide solution (50%, 0.895mol), epichlorohydrin for 6 hours After the internal addition was completed, the sodium hydroxide was added within 2 hours, and the reaction was continued to stir at 70°C for 0.5 hour, and stirred overnight without heating to obtain the product. Add sodium hydroxide solution (50%, 0.305mol) to the above reaction product, mix and stir a...

Embodiment 2

[0021] The parameters for the synthesis of the macromolecular skeleton of the heavy metal scavenger are shown in Table 1, and the synthesis process of the grafted dithiocarbamate group is the same as in Example 1.

Embodiment 3

[0023] The parameters for the synthesis of the macromolecular skeleton of the heavy metal scavenger are shown in Table 1, and the synthesis process of the grafted dithiocarbamate group is the same as in Example 1.

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PUM

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Abstract

Preparation and application of water-soluble macromolecule heavy-metal collector belong to the technical field of preparation of functional macromolecule materials and treatment of heavy-metal-containing waste water. The invention discloses a preparation method of the water-soluble macromolecule heavy-metal collector. The preparation method includes generating a macromolecule framework by crosslinking micromolecule amine ethylenediamine with triethylenetetramine, and grafting dithio carbamic acid group on the macromolecule framework to generate the water-soluble macromolecule heavy-metal collector. The like heavy-metal collector has effects of chelating heavy-metal ions and netting flocculation, can react with the free or complexing heavy-metal ions quickly in waste water at the normal temperature to generate insoluble precipitations, and is applicable to wide range of heavy-metal ions, the flocculation precipitation is large in particles, compact in structure and fast in settlement, the pH value ranges from 1 to 9, and removal rate of the heavy-metal ions in water is high and can reach above 95%.

Description

[0001] technical field [0002] Preparation and application of a water-soluble macromolecular heavy metal trapping agent, the invention relates to the preparation of a water-soluble macromolecular heavy metal trapping agent, which can be used for the trapping, flocculation, and removal of heavy metal ions in industrial wastewater, so as to achieve the environmental protection of polymer materials purpose of the domain application. The invention relates to the technical fields of preparation of functional polymer materials and environmental protection, and particularly belongs to the field of waste water treatment containing heavy metal ions. Background technique [0003] With the production of more and more new materials and the increase of organic additives, the composition of heavy metal wastewater is becoming more and more complex, and the difficulty of treatment is also increasing. Traditional methods such as neutralization and precipitation, vulcanization, ion exchange,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56C02F1/62
Inventor 顾文秀李佩倩邹路易吴婷婷李磊
Owner JIANGNAN UNIV
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