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Bacterial transport in porous media: new aspects of the mathematical model

DSpace at IIT Bombay

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Title Bacterial transport in porous media: new aspects of the mathematical model
 
Creator SEN, TUSHAR KANTI
DAS, DIPANKAR
KHILAR, KC
SURAISHKUMAR, GK
 
Subject velocity measurement
mathematical models
computer simulation
flow of fluids
 
Description Transport of bacteria is an important aspect from scientific, industrial and environmental point of view. In this work, a one-dimensional mathematical model based on linear equilibrium adsorption of bacteria has been developed to predict bacterial transport through porous media. This model is more realistic than existing models because of its coupling both physicochemical and biological phenomena. Two important biological phenomena, the growth and decay of bacterial cells and chemotactic/chemotaxis of bacteria along with physicochemical properties have been adequately incorporated which are quite new aspects in our model. In agreement with experimental study by [D.K. Powelson, R.J. Simpson, C.P. Gerba, J. Environ. Qual. 19 (1990) 396], model simulations indicated that enhancement of breakthrough occurs due to increase in flow velocity, cell concentration, substrate concentration, respectively. It has also been found that chemo tactic has a significant effect on bacterial transport, especially under conditions of considerable substrate gradient and at low pore velocity. The importance of threshold concentration of captured cells (σ0) on bacterial transport has also been identified which is also a new aspect in our model.
 
Publisher Elseiver
 
Date 2009-02-17T12:02:52Z
2011-11-25T17:02:25Z
2011-12-26T13:06:02Z
2011-12-27T05:52:03Z
2009-02-17T12:02:52Z
2011-11-25T17:02:25Z
2011-12-26T13:06:02Z
2011-12-27T05:52:03Z
2005
 
Type Article
 
Identifier Colloids and Surfaces A: Physicochemical and Engineering Aspects 260(1-3), 53-62
0927-7757
http://dx.doi.org/10.1016/j.colsurfa.2005.02.033
http://hdl.handle.net/10054/664
http://dspace.library.iitb.ac.in/xmlui/handle/10054/664
 
Language en