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Heavy metal ion adsorption and detection type composite hydrogel fiber and preparation method thereof

A technology of heavy metal ions and hydrogel fibers, applied in alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of single heavy metal ion adsorption function and inability to detect heavy metal ions, etc. It is easy to achieve industrialization , Excellent removal effect, large coating effect

Active Publication Date: 2017-04-05
华检计量检测(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the current heavy metal ion adsorption materials generally only have a single heavy metal ion adsorption function, and cannot detect heavy metal ions at the same time.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of CA / ATP composite gel. A certain amount of SA was dissolved in 100 g of deionized water to prepare a 1% SA solution. ATP with an SA content of 10% was added to the SA solution, and stirred to fully disperse the ATP in the solution to obtain a spinning solution. Pour the spinning liquid into the feed kettle of the wet spinning machine, seal the spinning machine feed kettle, heat the spinning machine feed kettle to keep the temperature of the spinning feed liquid at 25°C, let it stand for 12 hours, and then vacuumize the degassing treatment 20 minutes. After the degassing treatment of the spinning material liquid, open the outlet switch of the material kettle, feed nitrogen into the kettle to pressurize, turn on the switch of the metering pump, adjust the rotating speed to 8 rpm, and start spinning. The spun silk was rapidly infused with 1% CaCl 2In the solution, cross-linked and coagulated for 10 hours to form a fibrous CA / ATP hydrogel. The product ...

Embodiment 2

[0024] (1) Preparation of CA / ATP composite gel. A certain amount of SA was dissolved in 100 g of deionized water to prepare a 2% SA solution. ATP with an SA content of 20% was added to the SA solution, and stirred to fully disperse the ATP in the solution to obtain a spinning solution. Pour the spinning liquid into the feed kettle of the wet spinning machine, seal the spinning machine feed kettle, heat the spinning machine feed kettle to keep the temperature of the spinning feed liquid at 30°C, let it stand for 12 hours, and then vacuumize the degassing treatment 30 minutes. After the degassing treatment of the spinning feed liquid is completed, the outlet switch of the feed kettle is opened, nitrogen is fed into the kettle to pressurize, the metering pump switch is opened, the rotating speed is adjusted to 10 rpm, and spinning is started. The spun silk was rapidly infused with 2% CaCl 2 In the solution, cross-linked and coagulated for 10 hours to form a fibrous CA / ATP hydr...

Embodiment 3

[0028] (1) Preparation of CA / ATP composite gel. A certain amount of SA was dissolved in 100 g of deionized water to prepare a 3% SA solution. ATP with an SA content of 30% was added to the SA solution, and stirred to fully disperse the ATP in the solution to obtain a spinning solution. Pour the spinning liquid into the feed kettle of the wet spinning machine, seal the spinning machine feed pot, heat the spinning machine feed pot to keep the temperature of the spinning feed liquid at 40°C, let it stand for 12 hours, and then vacuumize the degassing treatment 40 minutes. After the degassing treatment of the spinning feed liquid is completed, the outlet switch of the feed kettle is opened, nitrogen is introduced into the kettle to pressurize, the metering pump switch is opened, the rotating speed is adjusted to 12 rpm, and spinning is started. The spun silk was rapidly infused with 1% CaCl 2 In the solution, cross-linked and coagulated for 15 hours to form a fibrous CA / ATP hyd...

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PUM

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Abstract

The invention discloses a preparation method of a heavy metal ion adsorption and detection type composite hydrogel fiber and belongs to the field of high molecular materials. The heavy metal ion adsorption and detection type composite hydrogel fiber is characterized in that heavy metal ions in water can be effectively detected qualitatively and can also be adsorbed. The adsorption and removal rate of the low-concentration heavy metal ions like nickel, chromium, lead and mercury in wastewater can reach 90% or above. The product preparation does not need special equipment, industrial implementation is easy, and the product cost is not high. A composite hydrogel fiber product is applied conveniently, can be bundled for use, and can also be woven into fabric or assembled into a separation assembly. After the product adsorbs the heavy metal ions, the adsorbed heavy metal ions can be efficiently recycled by being washed with cleaning fluid, 90% or more of the adsorbed heavy metal ions can be washed out at a time, and the fiber can be reused.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a composite polymer hydrogel fiber with good detection and adsorption functions for nickel, chromium, lead, mercury and other heavy metal ions and a preparation method thereof. The composite hydrogel can not only effectively detect conventional heavy metal ions in water qualitatively, but also can absorb heavy metal ions in water, and can be applied to the sewage treatment fields such as electroplating industry and chemical industry. Background technique [0002] With the rapid development of the chemical industry and metallurgical industry, heavy metal ion pollution has caused serious harm to the human body. At present, the main methods for the harmless treatment of wastewater containing heavy metal ions include membrane separation, electrochemical precipitation, ion exchange, adsorption and biological treatment. Among them, the adsorption method has high removal rate of heavy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28G01N33/18C02F101/22C02F101/20
CPCB01J20/12B01J20/20B01J20/22B01J20/24B01J20/28023B01J20/28047B01J2220/46B01J2220/4806B01J2220/4812B01J2220/4825C02F1/28C02F1/281C02F1/283C02F1/286C02F2101/20C02F2101/22G01N33/1813
Inventor 赵义平文梦娟姜文哲曹小浩孙丽
Owner 华检计量检测(天津)有限公司
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