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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/308

Title: Modeling and simulation of anaeorbic startfied biofilm for methane production and prediction of multipal steady states
Authors: Gupta, Naveen
Gupta, S K
Keywords: modeling
simulation
anaerobic startedfied biofilm
mathene production
steady states
Issue Date: 1997
Citation: The Chemical Engineering journal,65,37-46
Abstract: A present work deals with modeling of anaerobic metabolism in a startfied biofilm consisting of two distinct of layers of microorganinsms in a fixed film reactor.The model is applied to staedy states condition and is based on substrate utilization kinetic and mass transport.The model assume that the substrate is first metabolized by the outer acidogenic layer and the subsquent product are metabolized by the inner layer of methanogence and produce finally methane and carban dioxide.The model concider slab geometry of the biofilm.Monod kinetic for growth rate of acidogence and the inhibition effect of volatila fatty acid on growth rate of methanogence.The diffusion equation are solved simultaneously using a modified from the tecnique of orthogonal colocation of finite elements to obtain concertration profile and the rate of methane production per unit volume of the biofilm is determined.Computer are carried out to study the effect of various parameters on the rate of mathene production and to investigation the existence of multyple steady states.The simulation shows that for a range of parameters value three steady state exit.It is showen that the upper steady state with highest rate of mathene production may lead to unstatisfectory performance.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/308
Appears in Collections:Chemical Engineering

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