Paper Information

Journal:   IRANIAN JOURNAL OF CHEMISTRY AND CHEMICAL ENGINEERING (IJCCE)   2003 , Volume 22 , Number 2; Page(s) 61 To 74.
 
Paper: 

MODELING OF ANAEROBIC DIGESTION OF COMPLEX SUBSTRATES

 
 
Author(s):  KESHTKAR A.R., ABOLHAMD G.*, MEYSSAMI B., GHAFORIAN H.
 
* DEPARTMENT OF CHEMICAL ENGINEERING, TEHRAN UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

A structured mathematical model of anaerobic conversion of complex organic materials in non-ideally cyclic-batch reactors for Biogas production has been developed. The model is based on multiple-reaction stoichiometry (enzymatic hydrolysis, acidogenesis, acetogenesis and methanogenesis), microbial growth kinetics, conventional material balances in the liquid and gas phases for a cyclic-batch reactor, liquid-gas interactions, liquid phase equilibrium reactions and a simple mixing model which considers the reactor volume in two separate sections: the flow-through and the retention regions. The dynamic model describes the effects of reactant s distribution resulting from the mixing conditions, time interval of feeding, hydraulic retention time and mixing parameters on the process performance. The model is applied in the simulation of anaerobic digestion of cattle manure under different operating conditions. The model is compared with experimental data and good correlations are obtained.

 
Keyword(s): ANAEROBIC DIGESTION, DYNAMIC MODELING, TWO-REGION MIXING MODEL, CYCLIC-BATCH REACTOR, COMPLEX SUBSTRATES, BIOGAS
 
References: 
 
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