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A preparation method of carbon nanotube composite bismuth tungstate green deep water treatment agent

A technology of composite bismuth tungstate and carbon nanotubes, which is applied in water/sewage treatment, adsorption water/sewage treatment, light water/sewage treatment, etc., can solve problems such as unfavorable sustainable development, and achieve adsorption of other heavy metal ions, equipment Low requirements, good water treatment effect

Inactive Publication Date: 2016-04-06
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

[0029] (1) 10g of carbon nanotubes in 4L of H with a volume ratio of 1:1 2 SO 4 and HNO 4 Ultrasonic reaction at room temperature in the mixed solution 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 nanotubes ;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, and add 4g of 2,4,6-trifluoro -5-chloropyrimidine, adjust the pH value to 6 with sodium carbonate solution, ultrasonically react at 20°C for 24 hours, wash with ethanol, wash with...

Embodiment 2

[0033] (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 in excess diethylenetriamine, and 300 mg of 2-( 7-azobenzotriazole)-N,N,N',N'-tetramethyluronium hexafluorophosphate, reacted at 45°C for 5h, washed with ethanol, dried in vacuum at room temperature for 48h, and obtained 4.2g of carbon amides 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 5g2,4,6 -Trifluoro-5-chloropyrimidine, adjust the pH value to 6.2 with sodium carbonate solution, ultrasonically react at 25°C for 36h, wash with ethanol, wash with water...

Embodiment 3

[0037] (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 until neutral, 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 into 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 aminated carbon nano tube; 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, and 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 w...

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Abstract

The invention relates to a preparation method for an environment-friendly advanced water treatment agent by combining a carbon nano tube and dibismuth tris. The preparation method includes the steps that firstly, carboxylation, aminated modification and 2, 4, 6-trifluoro-5-chloropyrimidine modification are sequentially conducted on the carbon nano tube to obtain a reaction type carbon nano tube; secondly, bismuth salt, a stabilizer, a template agent and the reaction type carbon nano tube are added into phosphate buffered saline to be stirred for 30 min-60 min to form turbid liquid, tungstate is dissolved in the phosphate buffered saline to be added into the turbid liquid, and a transparent solution is formed; thirdly, the transparent solution is filtered and dried to obtain the environment-friendly advanced water treatment agent. The preparation method is low in cost, simple, low in equipment requirement and good in operability. The water treatment agent can be used for removing high-concentration organic pollutants in water, is suitable for advanced treatment of various kinds of wastewater, environmentally friendly and free of secondary pollution and has the advantages of being antibacterial, deodorant, capable of adsorbing other heavy metal ions and the like.

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 tungstate 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 dy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28C02F1/30C02F1/62C02F1/58C02F1/00
CPCC02F1/00C02F1/28C02F1/283C02F1/30C02F1/50C02F1/725C02F2101/20C02F2101/30
Inventor 刘保江高品王炜
Owner DONGHUA UNIV
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