Accurately measuring dissolved oxygen concentrations in fresh and salt water environments has long been an interdisciplinary priority. Many methodologies exist, including two very promising new ones, optical fluorescence quenching optrodes (or optodes) and solid-state voltammetric electrodes. In this study we compare the responsiveness of these two techniques to dynamic changes in dissolved oxy...

This report describes an experimental study of the stability of an HPAM polymer and an HPAMATBS terpolymer in the presence of varying initial levels of dissolved oxygen (0 to 8000 parts per billion, ppb), Fe2+ (0 to 220 parts per million, ppm), and Fe3+ (0 to 172 ppm). A special method was developed to attain and confirm dissolved oxygen levels. Stability studies were performed at 23°C and 90°C...

This paper describes the procedures that are necessary to arrive at a model that is sufficiently accurate to be used in an on-line penicillin fermentation optimisation scheme. A structured mechanistic model developed previously was available but this model failed to account for the effects of low levels of dissolved oxygen on growth and production. When moving towards optimising the fermentatio...