Method for preparing nano iron-carbon micro-electrolytic material used for organic wastewater treatment

A technology for electrolytic materials and organic wastewater, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of iron-carbon micro-electrolysis technology, such as easy hardening and decreased treatment efficiency, and achieves strong practical value, good separation performance, and improved The effect of processing efficiency

Inactive Publication Date: 2012-03-28
JIANGSU POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for preparing nano-iron-carbon micro-electrolysis materials for treating organic wastewater, which can effectively solve the problems that the iron-carbon micro-electrolysis technology is easy to harden and the treatment efficiency drops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, the 1L concentration is 0.6mol / L FeCl 3 The solution was vigorously stirred in a water bath at 60°C, and a certain concentration of Na 2 CO 3 solution, so that OH:Fe=1.0, after the dropwise addition is completed, continue to stir for 2h under the same conditions at 60°C, and age for 24h to obtain a hydroxyl iron pillar solution; at 60°C, simultaneously add Add a solution containing 2g of dodecyltrimethylammonium bromide and 60mL of hydroxyl iron pillar solution dropwise, and stir continuously during the dropwise addition. After the dropwise addition, continue stirring at 60°C for 2.0h, Middle and lower aging for 24 hours, centrifuged, and the obtained solids were washed 4 times with deionized water; the washed solids were placed in a tube furnace and passed through N 2 protection, at 600°C, carbonization for 4 hours, and then continue to pass N 2 Cool to room temperature, and grind the obtained solid into a 50-mesh powder; take 4g of the powdery solid, put it ...

Embodiment 2

[0026] First, the 1L concentration is 0.7mol / L FeCl 3 The solution was vigorously stirred in a water bath at 65°C, and a certain concentration of Na 2 CO 3 Solution, so that OH:Fe=1.0, after the dropwise addition is completed, continue to stir for 2h under the same conditions at 65°C, and then age for 24h to obtain the hydroxyl iron pillar liquid; at 60°C, add simultaneously to the suspension containing 10g bentonite Add dropwise a solution containing 4g of cetyltrimethylammonium bromide and 60mL of hydroxyl iron pillar solution, stirring continuously during the dropwise addition, after the dropwise addition, continue to stir at 65°C for 2.0h, and keep the temperature at 60°C Aging in the tank for 24 hours, centrifuged, and the obtained solid was washed 5 times with deionized water; the washed solid was placed in a tube furnace and passed through N 2 protection, at 700°C, carbonization for 6h, and then continue to pass N 2 Cool to room temperature, and grind the obtained so...

Embodiment 3

[0029] 1L concentration is 0.8mol / L FeCl 3 The solution was vigorously stirred in a water bath at 65°C, and a certain concentration of Na 2 CO 3 solution, so that OH:Fe=1.0, after the dropwise addition is completed, continue to stir for 2.5h under the same conditions at 65°C, and then age for 24h to obtain a hydroxyl iron pillar solution; Add dropwise a solution containing 5g of octadecyltrimethylammonium bromide and 80mL of hydroxyl iron pillar solution, and stir continuously during the dropwise addition. After the dropwise addition, continue to stir at 65°C for 2.0h. Aging in a constant temperature tank for 24 hours, centrifuged, and the obtained solid was washed 4 times with deionized water; the washed solid was placed in a tube furnace and passed through N 2 protection, at 800°C, carbonization for 6h, and then continue to pass N 2 Cool to room temperature, and grind the obtained solid into 80-mesh powder; take 3g of the powdery solid, put it into a three-necked flask, a...

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Abstract

The invention discloses a method for preparing a nano iron-carbon micro-electrolytic material used for organic wastewater treatment. The method comprises the following steps of: dripping Na2CO3 solution into FeCl3 solution to obtain hydroxyl iron prop stay liquid; dripping solution containing a cationic surfactant and the hydroxyl iron prop stay liquid into turbid liquid containing amargosite at a temperature between 60 and 65 DEG C at the same time, ageing the mixture at a constant temperature of 60 DEG C for 24 h, carrying out centrifugal separation, and washing solid substance by deionizedwater; protecting the washed solid substance by introducing N2, carbonizing the solid substance at a temperature between 600 and 800 DEG C for 4 to 6 hours, and grinding the solid substance into 50 to 80-mesh powder; and adding the deionized water into the powder, protecting the powder by introducing the N2, then stirring the solution, adding KBH4 solution into the stirred solution, and drying the solution at a constant temperature between 60 and 70 DEG C for 5 to 6h under the protection of the N2. The method fixes iron and carbon among amargosite layers, prevents aggregation between nano iron and the carbon, effectively ensures to play the nomo effect of the iron and the carbon in the micro-electrolytic process, solves the problem of filling hardening in the iron-carbon micro-electrolytic technology application, and improves the treatment efficiency of organic wastewater difficult to degrade.

Description

technical field [0001] The invention relates to the technical field of sewage treatment in environmental protection, in particular to a preparation method of an iron-carbon material used for treating refractory organic waste water. Background technique [0002] In the treatment method of refractory industrial wastewater, the iron-carbon micro-electrolysis method has been applied in practice. The principle is: iron filings and carbon particles are immersed in acidic wastewater, due to the potential difference between iron-carbon particles, Countless micro galvanic cells are formed in the waste water. Among them, the iron with low potential becomes the anode, and the carbon with high potential becomes the cathode, and an electrochemical reaction occurs under acidic oxygenation conditions, and the reaction process is as follows: [0003] Anode (Fe): Fe-2e→Fe 2+ [0004] Cathode (C): 2H + +2e→2[H]→H 2 [0005] From the above reaction process, it can be seen that the nascen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B82B3/00C02F1/461
Inventor 马建锋李定龙
Owner JIANGSU POLYTECHNIC UNIVERSITY
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