Preparation method for super-wetting foam titanium for oil water separation

An oil-water separation, titanium foam technology, applied in separation methods, liquid separation, grease/oily substance/float removal devices, etc., can solve the problems of low liquid penetration rate, low separation efficiency, low mechanical strength, etc., and achieve equipment prices Low cost, high separation efficiency and high mechanical strength

Inactive Publication Date: 2018-06-19
CHONGQING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a method for preparing super-wetting titanium foam suitable for oil-water separation, which solves the problems of low mechanical strength, low liquid permeation rate, low separation efficiency, and repeatability in the prior art. gender issues

Method used

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  • Preparation method for super-wetting foam titanium for oil water separation
  • Preparation method for super-wetting foam titanium for oil water separation
  • Preparation method for super-wetting foam titanium for oil water separation

Examples

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Effect test

Embodiment 1

[0038] In this embodiment, the preparation method of super-wetting titanium foam for oil-water separation, the specific steps are as follows:

[0039] (1) Foamed titanium with an area of ​​1.1cm×0.5cm (filter precision 30μm, thickness 3mm) was sequentially mixed with detergent, deionized water, isopropanol, alcohol, dilute sulfuric acid solution (concentration 0.5mol / L), decontaminated In deionized water, ultrasonic vibration was carried out for 0.5 h respectively.

[0040] (2) The titanium foam after ultrasonic cleaning was repeatedly washed 12 times with deionized water.

[0041] (3) Dry the cleaned titanium foam at 70° C. for 12 hours.

[0042] (4) According to the mass ratio, soak the dried titanium foam in an ethylene glycol solution containing 0.3% ammonium fluoride and 15% water for 40 minutes, so that the inner and outer surfaces of the titanium foam are completely infiltrated by the electrolyte.

[0043] (5) Using foamed titanium as the anode and titanium mesh as th...

Embodiment 2

[0051] The difference from Example 1 is:

[0052] 1, the oil-in-water emulsion adopted in the step (9) is the oil-in-water emulsion of xylene.

[0053] 2. The remaining same steps as in Example 1 were used to prepare super-hydrophilic titanium foam material.

[0054] Under the condition of no external pressure, the separation efficiency of the foamed titanium p-xylene oil-in-water emulsion reaches more than 99.89%.

Embodiment 3

[0056] The difference from Example 1 is:

[0057] 1, the oil-in-water emulsion adopted in the step (9) is the oil-in-water emulsion of octane.

[0058] 2. The remaining same steps as in Example 1 were used to prepare super-hydrophilic titanium foam material.

[0059] Under the condition of no external pressure, the separation efficiency of the titanium foam to the oil-in-water emulsion of octane reaches more than 99.95%.

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Abstract

The invention relates to the field of porous foam titanium materials for oil water separation, in particular to a preparation method for super-wetting (super-hydrophilic and super-hydrophobic) foam titanium applicable to oil water separation. The problems that oil-water emulsion (oil-in-water emulsion and water-in-oil emulsion) separation porous materials are low in mechanism strength, liquid permeation rate and separation efficiency, poor in repeatability and the like at the present stage are solved. Commercial foam titanium is used as a raw material, an electrochemical anodizing method is adopted for preparing the super-wetting foam titanium material, and the advantages of high mechanism strength, liquid permeation rate and separation efficiency, good repeatability, low cost and the likeare achieved. The preparation method has the advantages that operation is easy to conduct and feasible, the product cost is low, industrialization production is easy to achieve, and the preparation method is environmentally friendly and can be widely applied to the fields of oil water separation and the like.

Description

Technical field: [0001] The invention relates to the field of porous titanium foam materials for oil-water separation, in particular to a method for preparing super-wetting (super-hydrophilic and super-hydrophobic) foam titanium suitable for oil-water emulsion separation. Background technique: [0002] With the rapid development of the global economy and the rapid improvement of the level of industrialization, industrial oily sewage is increasing. In sewage purification, oil-water separation is a crucial process, which can recycle waste oil while purifying water. However, there are still many problems in oil-water separation. For example, sewage may contain acid or alkali, which will cause irreversible damage to the separation membrane and affect its performance. Moreover, in the field of oil-water separation, the separation of oil-water emulsion is still a huge challenge. [0003] Metal titanium has the advantages of high specific strength, good corrosion resistance, envi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/26C22F1/18C22F1/02C02F1/40C23F17/00
CPCC25D11/26C02F1/40C22F1/02C22F1/183C23F17/00
Inventor 孙立东金鉴韩拯丁美贾传坤
Owner CHONGQING UNIV
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