Open Access Open Access  Restricted Access Subscription or Fee Access

Development of Continuous Photocatalytic Reactor: Effect of Various Parameters

Sharad M Sontakke, Priyanka H. Kamble

Abstract


Water purification by heterogeneous photocatalysis is one of the rapidly growing areas of interest amongst the researchers. For mass application of the technology, efficient and economic reactor design is necessary which should address two important parameters, namely, light distribution inside the reactor and high surface area of irradiated catalyst per unit volume of reactor. The present study reports design of a continuous photocatalytic reactor using an easy-to-apply and economic TiO2 paste. TiO2 obtained by four different sources were studied and based on photoactivity as well as economy a suitable material was shortlisted. A paste of TiO2 was synthesized using the shortlisted material and coated on two different substrates, namely, glass and acrylic. Effect of various parameters such as choice of substrate, number of layers and number of coated slides on the photocatalytic degradation of Methylene blue was investigated in a batch photocatalytic reactor. The optimum conditions from the batch studies were used to design a continuous photocatalytic reactor. Degradation of Methylene blue was investigated in the continuous mode and it was observed that the reactor displayed same degradation efficiency for at least three cycles.

Full Text:

PDF

References


Ray, A. K. and Beenackers, A., Development of a new photocatalytic reactor for water purification. Catalysis Today, 440, 73-83, 1998.

Mahadwad, O., Parikh, P.A., Jasra, R.V, Bhalodiya, J., Decolorization of textile dyes by immobilized photocatalytic degradation process. International Journal of Industrial Engineering and Technology, 2, 207-214, 2010.

Rezaei, M., Rashidi, F., Royaee, S.J., Jafarikojour, M., Performance evaluation of a continuous flow photocatalytic reactor for wastewater treatment. Environmental Science and Pollution Research, 21, 12505-12517, 2014.

Mccullagh, C., Robertson, P. K., Adams, M., Pollard, P. M., Mohammed, A. Development of a slurry continuous flow reactor for photocatalytic treatment of industrial waste water. Journal of Photochemistry and Photobiology A: Chemistry, 211, 42-46, 2010.

Vijayalakshmi, R. and Rajendran, V., Synthesis and characterization of nano-TiO2 via different methods. Archives of Applied Science Research, 4, 1183-1190, 2012.

Sivalingam, Nagaveni, K., Hegde, M.S., Madras, G., Photocatalytic degradation of various dyes by combustion synthesized nano anatase TiO2. Applied Catalysis B: Environmental, 45, 23-28, 2003.

Ito, S., Chen, P., Comte, P., Nazeeruddin, M. K., Liska, P., Pechy, P., Grätzel, M., Fabrication of screen‐printing pastes from TiO2 powders for dye‐sensitized solar cells. Progress in Photovoltaics: Research and Applications, 15, 603-612, 2007.

Sontakke, S., Modak, J., Madras, G., Photocatalytic inactivation of Escherischia coli and Pichia pastoris with combustion synthesized titanium dioxide. Chemical Engineering Journal, 165 (1), 225-233, 2010.

Sontakke, S., Modak, J., Madras, G., Photocatalytic inactivation of Escherichia coli with LbL fabricated immobilized TiO2 thin films, Journal of Advanced Oxidation Technologies, 14 (1), 86-92, 2011.

Sangchay, W., Sikong, L., Kooptarnond, K., Comparison of photocatalytic reaction of commercial P25 and synthetic TiO2-AgCl nanoparticles. Procedia Engineering, 32, 590-596, 2012.

Kamble, S., Sawant, S., Pangarkar, V. Novel solar-based photocatalytic reactor for degradation of refractory pollutants. AIChE Journal, 50, 1647-1650, 2004.


Refbacks

  • There are currently no refbacks.