About The Journal
  Aims and Scope
  Editorial Board
  Submit a Manuscript 
  Subscription Information
  Guidelines for Publication
  Ethics
Articles & Issues
  Search
  Issue
  Online First
  KJChE on
For Authors
  Instructions to Authors
  Ethical Responsibilities of
  Authors in KJChE
  Ethics in Publishing
  Peer Review Process
  Author's Checklist
  Copyright Transfer Form
Contact us
 
 
 
Issue
Korean Journal of Chemical Engineering,
Vol.27, No.1, 159-162, 2010
Shape effect on optimal geometric conditions in surface aeration systems
Kumar B, Patel AK, Rao AR
The performance of surface aeration systems, among other key design variables, depends upon the geometric parameters of the aeration tank. Efficient performance and scale up or scale down of the experimental results of an aeration system requires optimal geometric conditions. Optimal conditions refer to the conditions of maximum oxygen transfer rate, which assists in scaling up or down the system for commercial utilization. The present work investigates the effect of an aeration tank's shape (unbaffled circular, baffled circular and unbaffled square) on oxygen transfer. Present results demonstrate that there is no effect of shape on the optimal geometric conditions for rotor position and rotor dimensions. This experimentation shows that circular tanks (baffled or unbaffled) do not have optimal geometric conditions for liquid transfer, whereas the square cross-section tank shows a unique geometric shape to optimize oxygen transfer.
Keywords: Aeration; Geometric Conditions; Oxygen Transfer; Rotor; Shape
[References]
  1. Mcwhirter JR, Chern JM, Hutter JC, Ind. Eng. Chem. Res., 34(8), 2644, 1995
  2. Fuchs R, Ryu D, Humphery AE, Ind. Eng. Chem. Process Des. Dev., 10, 190, 1971
  3. Hu WS, Meier J, Wang DIC, Biotech. Bioeng., 28, 122, 1986
  4. Ciofalo M, Brucato A, Grisafi F, Torraca N, Chem. Eng. Sci., 51(14), 3557, 1996
  5. Kozinski AA, King CJ, AIChE J., 12, 109, 1966
  6. American Society of Civil Engineers, ASCE standard - measurement of oxygen transfer in clean water, American Society of Civil Engineers, New York, 1993
  7. Cleasby JL, Baumann ER, J. Water Pollut. Contr. Fed., 40, 412, 1968
  8. Rao ARK, Laxmi US, Optimal Geometric Shape of a Surface Aeration Tank, Proceedings of the north american water and environment congress & destructive water, 800-5, 1996
  9. Takase H, Unno H, Akehata T, Int. Chem. Eng., 24, 128, 1984
  10. Rao ARK, Journal of Environmental Engineering, ASCE, 125, 215, 1999
  11. Rao AR, Kumar B, Biotechnol. Bioeng., 96(3), 464, 2007
  12. Rao AR, Kumar B, Korean J. Chem. Eng., 25(6), 1338, 2008
  13. Rushton JH, Costich EW, Everett HJ, Chem. Eng. Progr., 9, 395, 1950
  14. Kozinski AA, King CJ, AIChE J., 12, 109, 1966
  15. Nagata S, Mixing principles and applications, John Wiley & Sons, 1975
  16. Zlokarnik M, Dimensional analysis and scale-up in chemical engineering, Springer Verlag, New York, 1991
  17. Forrester SE, Rielly CD, Carpenter KJ, Chem. Eng. Sci., 53(4), 603, 1998
  18. Rao ARK, Laxmi BVB, Narasiah KS, Water Qual. Res. J. Canada, 39, 273, 2004
  19. Rao AR, Kumar B, Chem. Eng. Technol., 31(2), 287, 2008
  20. Metcalf and Eddy Inc., Wastewater engineering: treatment and reuse, Tata McGraw-Hill, New Delhi, 2003
  21. Udayasimha L, Experimental studies on oxygen transfer by surface aeration, PhD Thesis, IISc, Bangalore, 1991
  22. Schmidtke NW, Horvath I, Progress Water Technology, 9, 477, 1977
  23. Lu WM, Wu HZ, Chou CY, Korean J. Chem. Eng., 16(5), 703, 1999
  24. Cho HB, Park YH, Korean J. Chem. Eng., 20(2), 262, 2003
  25. Johnstone RE, Thring MW, Pilot plants models and scaleutp methods in chemical engineering, McGraw-Hill Book Co., Inc., New York, 1957
  26. Mietzner AB, Pigford RL, Scale-up in practice, edited by Fleming R, Reinhold Publishing Co., New York, USA, 1958
  27. Mishra VP, Joshi JB, Chem. Eng. Res. & Des., 71, 563, 1993
참고문헌정보(참고문헌, 인용문헌)는 화학공학소재연구정보센터에 의해 제공되고 있습니다.