Effect of hydrodynamic cavitation on zooplankton: A tool for disinfection

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dc.contributor.author Sawant, S.S.
dc.contributor.author Anil, A.C.
dc.contributor.author Venkat, K.
dc.contributor.author Gaonkar, C.
dc.contributor.author Kolwalkar, J.
dc.contributor.author Khandeparker, L.
dc.contributor.author Desai, D.V.
dc.contributor.author Mahulkar, A.V.
dc.contributor.author Ranade, V.V.
dc.contributor.author Pandit, A.B.
dc.date.accessioned 2008-10-17T15:50:11Z
dc.date.available 2008-10-17T15:50:11Z
dc.date.issued 2008
dc.identifier.citation Biochemical Engineering Journal, Vol.42; 320-328p.
dc.identifier.uri http://drs.nio.org/drs/handle/2264/1473
dc.description.abstract Application of hydrodynamic cavitation for disinfection of water is gaining momentum, as it provides environmentally and economically sound options. In this effort, the effect of cavitating conditions created by differential pump valve opening and that created by flowing through a cavitating element (orifice plates) on the microbes (zooplankton in sea water) is described. The experimental results are compared with modelling of cavitating conditions that includes cavity dynamics, turbulence generated by individual oscillating cavity, cell wall strength and geometrical and operating parameters of cavitation device. Theoretical model for quantifying the cavitationally generated turbulent shear and extent of microbial disinfection has been developed. Experimental results indicated that cavitation and/or turbulent fluid shear dominantly originating from cavitation are effective tools for sea water disinfection as more than 80% of the zooplankton present in the sea water were killed. It was also observed that shock waves generated due to cavitation is not the sole cause for zooplankton disruption. A correct physical mechanism accounting fluid turbulence and shear, generated from stable oscillation of cavity, significantly contribute towards the disruption. Further refinement of the model presented will serve as a basis for higher degree of disinfection and provide a practical tool for sea water disinfection.
dc.language.iso en
dc.publisher Elsevier
dc.rights Copyright [2008]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subject zooplankton
dc.subject cavitation
dc.subject disinfection
dc.subject heat transfer
dc.title Effect of hydrodynamic cavitation on zooplankton: A tool for disinfection
dc.type Journal Article

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