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Phosphorus uptake kinetics in a biofilm sequencing batch reactor
Authors:C. Nava-Ramírez  S. González-Martínez
Affiliation:(1) Burnham Institute for Medical Research, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA
Abstract:Using data from previously reported experimental work, theoretical kinetic analysis of the aerobic uptake of phosphate is presented. The data obtained in biofilm sequencing batch laboratory reactor was adjusted with polynomial regression to fit a curve during the uptake phase and then analyzed with two kinetic models: Classical Michaelis-Menten and one considering the enzymes involved have allosteric character. Data from nine experimental runs, every one under different operational conditions, were analyzed. The results show that the experimental values used fit in the model of an allosteric enzyme or enzyme-complex with four-binding sites. Based on this consideration, a catalytic model of sequential interactions was obtained which allows the interpretation of the kinetic mechanisms involved in the process. The calculated phosphorus uptake rate values do not show significant differences from the experimental ones.
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