Mixing time in an agitated multi-lamp cylindrical photoreactor using electrical resistance tomography

Journal of Chemical Technology and Biotechnology

Volumn 83, Issue 12, 2008, Pages 1676-1688

  Zhao, Zhen Fang ^a   Mehrvar, Mehrab ^a   Ein Mozaffari, Farhad ^a  

^a RYERSON UNIVERSITY   (Canada)

Author keywords

Electrical resistance tomography; Mixing performance; Mixing time; UV photoreactor

Indexed keywords

ELECTRICAL RESISTANCE TOMOGRAPHY; IMPELLER SPEED; MIXING PERFORMANCE; MIXING PROCESS; MIXING TIME; PHOTOREACTORS; RADIAL POSITIONS; ROTATIONAL SPEED; SIGNIFICANT IMPACTS; UV PHOTOREACTOR;

DIAGNOSTIC RADIOGRAPHY; ELECTRIC RESISTANCE; LOCATION; RADIATIVE TRANSFER; SPEED; TOMOGRAPHY;

MIXING;

EID: 61349198707     PISSN: 02682575     EISSN: 10974660     Source Type: Journal    
DOI: 10.1002/jctb.1986     Document Type: Article

References (43)

1. Scheible OK and Bassel CD, Ultraviolet disinfection in a secondary wastewater treatment plant effluent. EPA-600/S2-81-152, USEPA (1981).
2. Whitby GE and Scheible OK, The history of UV and wastewater. IUVA News 6:15-26 (2004).
3. Ward RW and DeGrave GM, Residual toxicity of several disinfectants in domestic wastewater. JWPCF 50-46 (1978).
4. Tabrizi GB and Mehrvar M, Pilot-plant study for the photochemical treatment of aqueous linear alkylbenzene sulfonate. Sep Purif Technol 49:115-121 (2006).
5. Moreira RM, Pinto AF, Mesnier R and Leclerc JP, Influence of inlet positions on the flow behavior inside a photoreactor using radiotracers and coloured tracer investigations. Appl Radiat Isotopes 65:419-427 (2007).
6. Sahle-Demessie E, Bekele S and Pillai UR, Residence time distribution of fluids in stirred annular photoreactor. Catal Today 88:61-72 (2003).
7. Demidov DA, Krasnochub AV and Shepelin AV, Experimental study of the distribution function of water residence time in disinfection plants. Water Resources 28:466-468 (2001).
8. Janex ML, Savoye P, Do-Quang Z, Blatchley ER III and Laine' JM, Impact of water quality and reactor hydrodynamics on wastewater disinfection by UV, use of CFD modeling for performance optimization. Water Sci Technol 38:71-78 (1998).
9. Saeed S and Ein-Mozaffari F, Using dynamic tests to study the continuous mixing of xanthan gum solutions. J Chem Technol Biotechnol 83:559-568 (2008).
10. Metzner AB and Taylor JS, Flow patterns in agitated vessels. AIChE J, 6:109-114 (1960).
11. Biggs RD, Mixing rates in stirred tanks. AIChE J 9:636-640 (1963).
12. Shiue S and Wong CW, Studies on homogenization efficiency of various agitators in liquid blending. Can J Chem Eng 62:602-609 (1984).
13. Moo-Young M, Tichar K and Takahashi FAL, The blending efficiency of some impellers in batch mixing. AIChE J 18:178-182 (1972).
14. Gaskey S, Vacus P, David R, Villermaux J and André JC, A method for the study of turbulent mixing using fluorescence spectroscopy. Exp Fluid 9:137-147 (1990).
15. Rielly CD and Britter RE, Mixing times for passive tracers in stirred tanks. Proceedings of 5th European Conference on Mixing, Wurzburg, West Germany, pp. 365-375 (1985).
16. Williams RA and Beck MS, Process Tomography: Principles, Techniques and Applications, 7th edn. Butterworth-Heinemann, Oxford (1995).
17. Mann R, Dickin FJ, Wang M, Dyakowski T, Williams RA, Edwards RB, et al., Application of electrical resistance tomography to interrogate mixing processes at plant scale. Chem Eng Sci 52:2087-2097 (1997).
18. Li L and Wei J, Three-dimensional image analysis of mixing in stirred vessels. AIChE J 45:1855-1865 (1999).
19. Wang M and Yin W, Measurements of the concentration and velocity distribution in miscible liquid mixing using electrical resistance tomography. Chem Eng Res Des 79:883-886 (2001).
20. Lucas GP, Cory JC and Waterfall RC, A six-electrode local probe for measuring solids velocity and volume fraction profiles in solids-water flows Meas Sci Technol 11:1498-1509 (2000).
21. West RM, Jia X and Williams RA, Parametric modelling in industrial process tomography. Chem Eng J 77:31-36 (2000).
22. York TA, Davidson JL, Mazurkiewich L, Mann R and Grieve BD, Towards process tomography for monitoring pressure filtration. IEEE Sensors J 5:139-151 (2005).
23. Dyakowski T, York T, Mikos M, Vlaev D, Mann R, Follows G, et al., Imaging nylon polymerisation processes by applying electrical tomography. Chem Eng J 77:105-109 (2000).
24. Toye D, Fransolet E, Simon D, Crine M, L'Homme G and Marchot P, Possibilities and limits of application of electrical resistance tomography in hydrodynamics of bubble columns. Can J Chem Eng 83:4-10 (2005).
25. Hou YY, Wang M, Holt R and Williams RA, A study of the mixing characteristics of a liquid magnetically stabilised fluidised bed using electrical resistance tomography. Proceedings of the Second World Congress on Industrial Process Tomography, Hannover, Germany, pp. 29-31, 315-323 (2001).
26. Bolton GT, Hooper CW, Mann R and Stitt EH, Flow distribution and velocity measurement in a radial flow fixed bed reactor using electrical resistance tomography. Chem Eng Sci 59:1989-1997 (2004).
27. Kaminoyama M, Taguchi S, Misumi R and Nishi K, Monitoring stability of reaction and dispersion states in a suspension polymerization reactor using electrical resistance tomography measurements. Chem Eng Sci 60:5513-5518 (2005).
28. Geselowitz DB, An application of electrocardiographic lead theory to impedance plethysmography. IEEE Trans Biomed Eng 18:38-41 (1971).
29. Kotre CJ, A sensitivity coefficient method for the reconstruction of electrical impedance tomograms. Clin Phys Physiol Means 10:275-281 (1989).
30. Ranade VV, Bourne JR and Joshi JB, Fluid mechanics and blending in agitated tanks. Chem Eng Sci 46:1883-1893 (1991).
31. Hiby JW, Definition and measurement of the degree of mixing liquid mixtures. Int Chem Eng 21:197-204 (1981).
32. Rushton JH, Costich EW and Everett HJ, Power characteristics of mixing impellers, Part 2. Chem Eng Prog 46:467-476 (1950).
33. Mmbaga JP, The use of mixing-sensitive chemical reactions to characterize mixing in the liquid phase of fibre suspensions. PhD Thesis, University of British Columbia, Vancouver, Canada (1999).
34. Bubbico R, Cave D and Mazzarotta B, Influence of solid concentration and type of impeller on the agitation of large PVC particles in water. Recent Progres Genie Procedes 11:81-88 (1997).
35. Holland FA and Chapman FS, Liquid Mixing and Processing in Stirred Tanks. Reinhold Pub. Corp., New York (1966).
36. Paul EL, Atiemo-Obeng VA and Kresta SM, Handbook of Industrial Mixing Science & Practice. Wiley-Interscience (2004).
37. Prochazka J and Landau J, Homogenization of miscible liquids in the turbulent region. Coll Czech Chem Commun 26:2961-2973 (1961).
38. Ihejirika I and Ein-Mozaffari F, Using CFD and ultrasonic velocimetry to study the mixing of pseudoplastic fluids with a helical ribbon impeller. Chem Eng Technol 30:606-614 (2007).
39. Brennan DJ and Lehrer IH, Impeller mixing in vessels experimental studies on the influence of some parameters and formulation of a general mixing time equation. Trans Inst Chem Eng 54:139-152 (1976).
40. Houcine I, Plasari E and David R, Effects of the stirred tank's design on power consumption and mixing time in liquid phase. Chem Eng Technol 23:605-613 (2000).
41. Nere NK, Ashwin W, Patwardhan AW and Joshi JB, Liquid-phase mixing in stirred vessels: turbulent flow regime. Ind Eng Chem Res 42:2661-2698 (2003).
42. Raghav Rao KSMS and Joshi JB, Liquid phase mixing in mechanically agitated reactors. Chem Eng Commun 74:1-25 (1988).
43. Rewatkar VB and Joshi JB, Effect of impeller design on liquid phase mixing in mechanically agitated reactors. Chem Eng Commun 102:1-34 (1991).