Error message

  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/bootstrap.inc).

Oxygen Transfer with Circulation Flow Rate in Unbaffled Surface Aerator

Bimlesh Kumar and Thiyam Tamphasana Devi
Affiliation: 
Department of Civil Engineering, Indian Institute of Technology Guwahati Guwahati-781039, India; bimk@iitg.ernet.in, d.thiyam@iitg.ernet.in
DOI: 
https://doi.org/10.23939/chcht06.02.203
AttachmentSize
PDF icon full_text.pdf113.03 KB

Keywords:

Abstract: 
Circulation flow rate and vortex in unbaffled surface aeration systems are interrelated. These properties exert a profound effect on the performance of the surface aeration systems affecting the oxygen transfer process. This work develops the scale up criteria for oxygen transfer rate based on the circulation flow rate. A relationship between circulation flow rate and vortex depth in surface aerators has been also developed
References: 

[1] Nienow A.: Appl. Mech. Rev., 1998, 51, 1.
https://doi.org/10.1115/1.3098990

[2] Ozabek B. and Gayik S.: Process Biochem., 2001, 36, 729.
https://doi.org/10.1016/S0032-9592(00)00272-7

[3] Moucha T., Linek V. and Prokopova E.: Chem. Eng. Sci., 2003, 2, 1839.
https://doi.org/10.1016/S0009-2509(02)00682-6

[4] Smit L. and During J.: Proc. 7th European Congress on Mixing. Belgium, Bruges 1991, 633.

[5] Markopoulos J. and Kontogeorgaki E.: Chem. Eng. Techn., 1995, 18, 68.
https://doi.org/10.1002/ceat.270180113

[6] Mazzarotta B.: A.I.Ch.E. Symp. Ser., 1993, 89, 112.

[7] Grisafi F., Brucato A. and Rizzuti L.: Instn. Chem. Eng. Symp. Ser., 1994, 136, 571.

[8] Rao A. and Kumar B.: Biotech. Bioeng., 2007, 96, 464.
https://doi.org/10.1002/bit.21149

[9] Ulbrecht J. and Patterson G.: Mixing of Liquids by Mechanical Agitation. Gordon and Breach Science Publishers, New York 1985.

[10] Roustan M., Pharamond J. and Linґe A. Techniques de l'ingґenieur, 1999, J3800.

[11] Nagata S.: Mixing: Principle and Applications. Wiley, New York 1975.

[12] Tsao G.: Biotech Bioeng., 1968, 10, 177.
https://doi.org/10.1002/bit.260100206

[13] Rao A., Kumar B. and Patel A.: Sci. Asia, 2009, 35, 183.
https://doi.org/10.2306/scienceasia1513-1874.2009.35.183

[14] Rao A. and Kumar B.: J. Chem. Techn. Biotechn., 2007, 82, 101.
https://doi.org/10.1002/jctb.1643

[15] Middleton J.: Mixing in the Process Industries [in:] Hamby N., Edwards M. and Nienow A. (Eds.), 2nd edn. Butterworths Heinemann, Oxford 1993.

[16] Lewis W. and Whitman W.: Ind. Eng. Chem., 1924, 16, 1215.
https://doi.org/10.1021/ie50180a002

[17] WEF and ASCE Manual of Practice for Water Pollution Control: Aeration a Waste Water Treatment Process. Water Environment Federation, Alexandria, New York 1988.

[18] Liu K. and Neeld K.: Simulation of Mixing and Heat Transfer in Stirred Tanks with VisiMix® Solutia Inc. Topical Conference on Process Development from Research to Manufacturing: Industrial Mixing and Scale-up, AIChE Annual Meeting, Dallas, TX 1999.

[19] Kumar B.: Bull. Chem. React. Eng. Catal., 2009, 4, 55.
https://doi.org/10.9767/bcrec.4.2.7110.55-60

[20] Kumar B. and Rao A.: Bioresour. Techn., 2009, 100, 2886.
https://doi.org/10.1016/j.biortech.2008.12.031

[21] Badino A., Facciotti M. and Schmidell W.: Biochem. Eng. J., 2001, 8,111.
https://doi.org/10.1016/S1369-703X(01)00092-4