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Method of preparing green advanced water treatment chemicals with carbon nano-tube compounded pucherite

A technology for compounding bismuth vanadate and carbon nanotubes, which is applied in energy wastewater treatment, adsorption water/sewage treatment, oxidized water/sewage treatment, etc., can solve problems such as unfavorable sustainable development, achieve good water treatment effect, and the preparation method Simple and operable effect

Inactive Publication Date: 2015-03-25
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The methods currently used to treat wastewater mainly include: physical separation, biodegradation, and chemical decomposition, but these methods have certain limitations and are not conducive to sustainable development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) 10g of carbon nanotubes in 4L of H with a volume ratio of 1:1 2 SO 4 and HNO 4 The mixture was ultrasonically reacted at room temperature for 30 minutes, washed with water until neutral, and vacuum-dried at room temperature for 48 hours to obtain 5 g of carboxylated carbon nanotubes; then the above 5 g of carboxylated carbon nanotubes were dispersed in excess diethylenetriamine, and 100 mg of 2-( 7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, reacted at 40°C for 5h, washed with ethanol, and dried in vacuum at room temperature for 48h to obtain 4g of aminated carbon nano tube; finally ultrasonically disperse 4g of aminated carbon nanotubes in 1L of a mixture of water and acetone with a volume ratio of 3:1, adjust the pH value to 5 with sodium carbonate solution, add 4g of 2,4,6- Trifluoro-5-chloropyrimidine, adjusted the pH value to 6 with sodium carbonate solution, ultrasonically reacted at 20°C for 24h, washed with ethanol, washed with wate...

Embodiment 2

[0032] (1) 10g of carbon nanotubes in 4L of H with a volume ratio of 3:1 2 SO 4 and HNO 4 The mixture was ultrasonically reacted at room temperature for 45 minutes, washed with water until neutral, and vacuum-dried at room temperature for 54 hours to obtain 6.5 g of carboxylated carbon nanotubes; then the above 5 g of carboxylated carbon nanotubes were dispersed into excess diethylenetriamine, and 300 mg of 2- (7-Azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, reacted at 45°C for 5h, washed with ethanol, and dried in vacuum at room temperature for 48h to obtain 4.2g of aminated Carbon nanotubes; finally, ultrasonically disperse 4.2g of aminated carbon nanotubes in 1L of a mixture of water and acetone at a volume ratio of 4:1, adjust the pH value to 5.5 with sodium carbonate solution, and add 5g of 2,4 dropwise in an ice-water bath , 6-trifluoro-5-chloropyrimidine, adjust the pH value to 6.2 with sodium carbonate solution, ultrasonically react at 25°C for ...

Embodiment 3

[0036] (1) 10g of carbon nanotubes in 4L of H with a volume ratio of 5:1 2 SO 4 and HNO 4 The mixture was ultrasonically reacted at room temperature for 60 minutes, washed with water to neutrality, and vacuum-dried at room temperature for 60 hours to obtain 8 g of carboxylated carbon nanotubes; then the above 8 g of carboxylated carbon nanotubes were dispersed in excess diethylenetriamine, and 600 mg of 2-( 7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, reacted at 50°C for 5h, washed with ethanol, and dried in vacuum at room temperature for 48h to obtain 4.5g of carbon amides nanotubes; finally ultrasonically disperse 4.5g of aminated carbon nanotubes in 1L of a mixture of water and acetone at a volume ratio of 5:1, adjust the pH value to 6 with sodium carbonate solution, add 6g of 2,4, 6-trifluoro-5-chloropyrimidine, adjust the pH value to 6.5 with sodium carbonate solution, ultrasonically react at 30°C for 48h, wash with ethanol, wash with water, dry...

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Abstract

The invention relates to a method of preparing green advanced water treatment chemicals with carbon nano-tube compounded pucherite. The method comprises the steps: (1) sequentially performing carboxylation, amination modification, 2, 4, 6-trifluoro-5-chloro-pyrimidine modification to carbon nano-tubes to obtain reaction type carbon nano-tubes; (2) adding bismuth salt, a stabilizer, a template agent and the reaction type carbon nano-tubes to phosphate buffer solution and stirring for 30-60 minutes to form turbid liquid; dissolving metavanadate into the phosphate buffer solution, and then adding to the turbid liquid to form transparent solution; and (3) filtering and drying to obtain the green advanced water treatment chemicals with carbon nano-tube compounded pucherite. The preparation method is low in price, simple in preparation, low in requirement on equipment and good in operability; the water treatment chemicals are capable of removing high-concentration organic pollutants in water, applicable to advanced treatment for various waste water, environmental-friendly and no secondary pollution and have the advantages of sterilization, deodorization and capability of absorbing other heavy metal ions.

Description

technical field [0001] The invention belongs to the field of water treatment agents, in particular to a preparation method of a carbon nanotube composite bismuth vanadate green deep water treatment agent. Background technique [0002] Only about 10% of the world's water is directly used by humans. The largest share, 70%, is used in agriculture, and the remaining 20% ​​is used in industry. China's sewage is about 20% of the world's, but it only gets 5% of the world's fresh water. Therefore, solving the pollution problem is on the agenda. In the process of textile printing and dyeing, leather, and paper-making industries, a large number of additives that pollute the environment and are harmful to the human body are used. Most of these additives are discharged in the form of liquid and pollute the environment. They have poor biodegradability, high toxicity, and high free formaldehyde content. The content of heavy metal ions exceeds the standard. Among them, printing and dye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/22C02F1/28C02F1/72
CPCY02W10/37
Inventor 刘保江俞幼萍高品刘路王炜
Owner DONGHUA UNIV
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