Foam material for removing pollutants and/or heavy metal from floating medium

A foam material and composite foam technology, applied in the field of foam materials, can solve problems such as difficulty in control

Active Publication Date: 2005-12-07
LANXESS DEUTDCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this response is difficult to control in practice

Method used

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  • Foam material for removing pollutants and/or heavy metal from floating medium
  • Foam material for removing pollutants and/or heavy metal from floating medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Describe the production method of foam material containing adsorbent

[0031] Bayoxide  E33 (the particle size is between 0.5 and 2 mm, and its BET is 140 m2 / g) is manufactured by Arcol 1108  And Desmophen  41WB01 is pre-mixed in a standard polyol mixture (Arcol 1108  It is a polyether alcohol containing oxyethylene and oxypropylene units with an average molecular weight of 2000-6000. Desmophen  41WB01 is a polyether polyol with a high ethylene oxide content), and then used as the isocyanate reaction component toluene diisocyanate (Desmodur  T80) The mixture is foamed, and additional additives and adjuvants are used at the same time, for example, the siloxane stabilizer OS20 as a siloxane stabilizer  , Tertiary amine catalyst Desmorapid  DMEA and Dabco  33LV and Desmorapid SO (as tin catalyst). The content of the adsorbed component is 27.8% by weight of the total weight of the reaction mixture, or 29.5% by weight of the total weight of the reaction mixture after t...

Embodiment 2

[0043] The foam material containing the adsorbed components produced according to the method of Example 1 was put into a glass tube and rinsed with 250 ml of main pipeline water. For comparison, an equivalent amount of Bayoxide  E33 is also filled in a glass tube, and the filter base is made of glass frit of size 1 (aperture width 100-160μm), and the device is also flushed with 250ml of main pipeline water. The effluent filtrate was collected, and the turbidity was measured using the turbidity photometer LTP5 produced by Lange according to the method described in DIN 38404. The turbidity (TE-F) of the main pipeline water is 0.63. Flow through Bayoxide  The turbidity of E33 water was 7.30, while the turbidity of water flowing through the foam was 1.60.

[0044] For comparison, the standard BaSO is also listed in Table 1. 4 The turbidity of the suspended matter.

[0045] Sample

deal with

TE-F

BaSO 4

SO 4 (mg / 1)

Flow rate

(l / h)

I

...

Embodiment 3

[0049] A solution containing 2.90 mg / l of phosphate was pumped through a foam containing an adsorbent component, and as a comparison, the solution was pumped through an equal amount of adsorbent component. After 60 minutes and 12 hours later, samples were taken and analyzed for phosphate content. The results are summarized in Table 2.

[0050] Sample

Adsorbent

Elapsed time

(Hour)

Phosphate content

(mg / l PO 4 )

Flow rate

(l / h)

1

No

-

2.90

-

2

Bayoxide  E33

1

1.05

45

3

Bayoxide  E33

12

0.50

45

4

Contains Bayoxide 

E33 foam material

1

2.30

45

5

Contains Bayoxide 

E33 foam material

12

0.38

45

[0051] The above data shows that the adsorption component (Bayoxide  The efficacy of E33) is not impaired by making foam materials.

[0052] In the following exam...

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Abstract

Foams, which is a composite foam of polyurethane foam, polyethylene foam, and / or polystyrene foam, comprising an iron oxyhydroxy granules as an adsorbent composition (5-45 wt.%, based on the total mass of foam), comprises cavities filled with the iron oxyhydroxy granules having a Brunauer-Emmett-Teller (BET) surface area of greater than 100 m2 / g, and a mean particle size of 0.5-2 mm. - An INDEPENDENT CLAIM is included for a use of the foams comprising an adsorbent composition as above, for removing pollutants and / or heavy metals, which is finely processed and used in filter casings of pumps for aquaria, garden ponds and / or waste water purification plants.

Description

Technical field [0001] The invention relates to a foam material containing adsorption components, and a production method and use of the foam material. Background technique [0002] Pollutants and / or heavy metals, such as phosphate pollutants, can be found in water such as aquariums and ponds. Phosphate ions enter the water body through fish food and excretion, and they cause the wild growth of algae. To prevent this from happening, you must change the water regularly or use an absorber (or absorbent) to remove phosphate from the water. However, the cost of changing the water regularly (especially for the Aquarium Aquarium) is quite high. [0003] In some cases, the arsenic content in the water will increase (for example, in some groundwater sources). [0004] Known methods for removing pollutants and / or heavy metals (such as phosphate, arsenic and some other ions) from a flowing medium (such as water) are based on adsorbing them to various substances or based on ion exchange. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/32C02F1/28C08J9/22C08K3/22C08L23/04C08L25/04C08L75/04
CPCB01J20/262B01J20/28097B01J20/3236B01J20/32B01J20/261B01J20/28045C02F2101/103C02F2101/20Y10S210/912B01J20/0229C02F2101/105B01J20/28004C02F1/288B01J20/321B01J20/06B01J20/3212C02F1/281
Inventor B·维特B·莱曼K·-D·诺瓦克H·凯思琳A·施莱格尔
Owner LANXESS DEUTDCHLAND GMBH
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