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Metallic ion adsorption material and preparation method thereof

A technology for metal ions and adsorption materials, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve problems such as heavy metal ion pollution, and achieve the effects of good adsorption capacity, high surface area, and simple preparation method

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to address the defects of the prior art, to provide an adsorption material for absorbing heavy metal ions in wastewater and a preparation method thereof, which can effectively adsorb metal ions in wastewater, and fundamentally solve the pollution problem of heavy metal ions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] After the chitosan is pulverized, water is added to grind in a refiner, the obtained slurry is filtered, and the filter material is vacuum-dried at 50° C. for 24 hours to obtain chitosan powder. Mix 40.0g of dried chitosan powder with polyether polyol PPG (Mn=2000g / mol) 50g, add water 2g, add silicone oil BF23701.4g as foam stabilizer, polyoxyethylene glyceryl ether (hydroxyl value 160 ~180mgKOH / g) 5g, triethylenediamine 0.45g and stannous octoate 0.25g as a catalyst, toluene diisocyanate (TDI, 80 / 20) 80g, stir the above raw materials at room temperature and pour them into a foaming box for foaming , After the foaming is completed, it is aged in a vacuum oven at 80°C for 2 hours.

Embodiment 2

[0021] After the chitin is pulverized, water is added to grind in a refiner, the obtained slurry is filtered, and the filter material is vacuum-dried at 60° C. for 24 hours. Mix 40.0g of dried chitin powder with 100.0g of ethylene adipate polyester (Mn=1000g / mol) evenly, add 2.7g of water and 2.0g of fluorotrichloromethane as foaming agent, silicone oil BF23701.4g is used as a foam stabilizer, 5.0g of polyoxyethylene glyceryl ether (hydroxyl value 160-180mgKOH / g) is used as a cell opener, 0.2g of triethylenediamine, 0.4g of diethanolamine and 0.25g of stannous octoate are used as catalysts. 100.0 g of methylene polyphenyl isocyanate (PAPI). Stir the above raw materials evenly at room temperature and pour them into a foaming box for foaming. After foaming, mature them in a vacuum oven at 100° C. for 2 hours.

Embodiment 3

[0023] The soybean meal was pulverized, added with water and refined in a refiner, the obtained slurry was filtered, and the filter material was vacuum-dried at 60° C. for 48 hours. Mix 80.0g of dried soybean meal powder with 100.0g of polyether polyol PPG (Mn=2000g / mol) evenly, add 6.0g of water, 1.4g of silicone oil BF2370, polyoxyethylene glyceryl ether (hydroxyl value 160-180mgKOH / g ) 5g, triethylenediamine 0.45g, stannous octoate 0.25g, polymethylene polyphenylisocyanate (PAPI) 90.0g, at room temperature, the above raw materials are stirred and poured into a foaming box for foaming, and the foaming ends Afterwards, ripen at 60°C for 30 minutes.

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PUM

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Abstract

The invention relates to an adsorbing material, in particular to an adsorbing material used for absorbing metal ion in waste water and a preparation method thereof. Under the action of a catalyst, aminopolysaccharides or oilmeal, polyalcohols, isocyanate and vesicant are loaded through polymerization on a urethane foam cross-linked network. The adsorption material can effectively adsorb metal irons in wasted water, thereby solving the pollution of metal irons fundamentally. The adsorbing material has good adsorption of metal irons. The chitosan and oil meal are loaded on the urethane network so as to obtain a novel porous adsorption material which has good physical and chemical performance, larger surface area, good adsorption ability and simple preparation method. The adsorption material is suitable for disposal of waste water containing heavy metal irons characterized by large flow rate and low concentration.

Description

technical field [0001] The invention relates to an adsorption material, in particular to an adsorption material for absorbing metal ions in waste water and a preparation method thereof. Background technique [0002] Metallurgy, electronics, chemical industry, textile and other industries are prone to discharge high-flow, low-concentration wastewater containing heavy metal ions such as mercury, lead, manganese, cadmium, chromium, etc. These wastewater are very harmful to the environment. Due to the low content of heavy metal ions, the method of coagulation and sedimentation is generally adopted, and a large amount of chemicals are added to transfer heavy metal ions from water to sludge for landfill treatment. The treatment cost is high, and the problem of heavy metal ion pollution cannot be fundamentally solved. [0003] The adsorbent adsorption method has the characteristics of small equipment investment, simple operation and management, and low operating cost. Compared wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26C02F1/28C02F1/62
Inventor 刘继延刘学清张远方
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