Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
A model of nitrogen removal in waste-waters using alginate-entrapped cyabobacteria Anabaena Ch3
Abstract A mathematical model accounting for the mass transfer process and the growth kinetics of alginate-entrapped cyanobacteria Anabaena CH3 in a batch reactor is presented to predict the removal of nitrogenous compounds in wastewaters. The governing equations were cast in dimensionless form and solved by the method of explicit finite difference. The mass transfer behaviour around a spherical bead and diffusion process within the cell-containing gel were drawm from the literature. The biological kinetic parameters of Anabaena CH3 in the nitrogenous medium were determined by a series of batch experiments. Good agreement between model predictions and experimental data was obtained by comparing dimensionless concentration profiles of ammonia and nitrate in the bulk liquid phase. The effects of dimensionless groups on the model performance were carried out in the sensitivity analysis. The Thiele modulus (φ 2) and the total volume of the cell-containing gel beads available for liquid-phase mass transfer (α) were identified to strongly influence the ammonia removal rate in wastewaters.
A model of nitrogen removal in waste-waters using alginate-entrapped cyabobacteria Anabaena Ch3
Abstract A mathematical model accounting for the mass transfer process and the growth kinetics of alginate-entrapped cyanobacteria Anabaena CH3 in a batch reactor is presented to predict the removal of nitrogenous compounds in wastewaters. The governing equations were cast in dimensionless form and solved by the method of explicit finite difference. The mass transfer behaviour around a spherical bead and diffusion process within the cell-containing gel were drawm from the literature. The biological kinetic parameters of Anabaena CH3 in the nitrogenous medium were determined by a series of batch experiments. Good agreement between model predictions and experimental data was obtained by comparing dimensionless concentration profiles of ammonia and nitrate in the bulk liquid phase. The effects of dimensionless groups on the model performance were carried out in the sensitivity analysis. The Thiele modulus (φ 2) and the total volume of the cell-containing gel beads available for liquid-phase mass transfer (α) were identified to strongly influence the ammonia removal rate in wastewaters.
A model of nitrogen removal in waste-waters using alginate-entrapped cyabobacteria Anabaena Ch3
Lu, Chungsying (Autor:in) / Mei Lee, Chi (Autor:in) / Ming Lu, Wei (Autor:in) / Chen, Pei-Chung (Autor:in)
Environmental International ; 20 ; 529-540
08.03.1994
12 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
A model of nitrogen removal in wastewaters using alginate-entrapped cyanobacteria Anabaena CH3
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