Abstract
A Fractal method is applied to a bioprocess of Algae and some basic characteristics of the method are investigated with experimental data for 4 kind of Algae. In the growing process of Algae, fractal dimensions are calculated with image data, which are obtained on-line by a microscope and a CCD (Carged Coupled Device) camera.
Spirulina platensis NIES39, 46, Anabaena cylindrica and Chrollera vurgaris are useful Algae for a wastegas bioprocess. Spirulina platensis NIES39, 46 shows a typical complicated growing pattern in each growing phase. The complexity of the pattern is described with a large fractal dimension. The growing patterns are distinguished from each other with the factal dimension in each growing phase. Complexity of simple growing patterns for Anabaena cylindrica or Chlorella vurgaris are described with a small fractal dimesion. Other basic characteristics of the fractal method are also discussed with some experimental results.
The proposed fractal method is useful for an on-line state measurement in a waste-water process or other bioprocess which has a similar complicated growing pattern as Algae.
