Open AccessAdsorption Effect on the Dynamic Response of a Biochemical Reaction in a Biofilm Reactor for Wastewater Treatment
Author(s) -
Tsuneda S.,
Inoue Y.,
Auresenia J.,
Hirata A.
Publication year - 2003
Publication title -
engineering in life sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.547
H-Index - 57
eISSN - 1618-2863
pISSN - 1618-0240
DOI - 10.1002/elsc.200300021
Subject(s) - adsorption , wastewater , biofilm , inlet , steady state (chemistry) , chemistry , fluidized bed , nonlinear regression , kinetics , kinetic energy , chemical engineering , thermodynamics , chromatography , environmental engineering , materials science , environmental science , mathematics , bacteria , regression analysis , organic chemistry , physics , biology , engineering , mechanical engineering , statistics , quantum mechanics , genetics
The dynamic behavior of a completely mixed, three‐phase, fluidized bed biofilm reactor treating simulated domestic wastewater was studied with step changes in inlet concentration. It was found that the response curves showed second order characteristics, i.e., as the inlet concentration was increased, the outlet concentration also increased, reached a peak value and then decreased until it leveled to a new steady‐state value corresponding to the new inlet concentration level. Nonlinear regression analysis was performed using Monod‐type rate equations with and without an adsorption term. As a result, the theoretical curve of the kinetic model that incorporates the adsorption term has best fit to the actual response in most cases. Thus, it was concluded that the adsorption of a substrate onto the biofilm and carrier particles has a significant effect on the dynamic response in biofilm processes.