Phosphorus Release Kinetics in Biofilm Reactors

Abstract

This paper presents the kinetic analysis, using Generalized Power-Law equations to describe the results of an experimental investigation conducted on a batch submerged biofilm reactor for phosphorus removal under an anaerobic/aerobic cycle. The observed rates and amounts of phosphorus release and organic substrate uptake in the anaerobic phase leads to a kinetic model in which these two variables are dependent on each other with a non-linear behaviour and reach equilibrium values in both cases, at different times and are function of rate constants ratio. The model has a good fit with experimental data except for C uptake at anaerobic contact times longer than four hours, where other kinetics are implied. Kinetic parameters were obtained with different initial substrate concentrations, anaerobic contact cycles, and type of substrates.

Adsorptive Properties of Fish Scales of Oreochromis Niloticus (Mojarra Tilapia) for Metallic Ion Removal from Waste Water

“…Generalized power-law equations have been successfully applied to describe the phosphorus release kinetics and substrate biodegradation kinetics carried out simultaneously by anaerobic microorganisms in a biofilm reactor 29 and in the kinetics of copper uptake on chitosan. 30 The solid lines in Figure 3 are obtained for the integrated equation when n * 1.…”

Consideraciones de diseño para la eliminación biológica de fósforo empleando procesos biopelícula

“…e. El nitrato recirculado a la fase anaerobia es empleado por el resto de los heterótrofos para respiración. Ruiz-Treviño et al (1992) describen la liberación de fósforo y captación de materia orgánica en estado estacionario, a través de ecuaciones de primer orden, ajustando los resultados experimentales de González-Martínez y Wilderer (1991), en las cuales Kp y Kc son cinéticas de liberación de fósforo y captación de materia orgánica respectivamente. Realizan ajustes para distinta concentración afluente de sustrato, y en distintas condiciones de operación (duración de ciclo, distintos sustratos).…”