Chlorella vulgaris had the ability to accumulate heavy metals in their bodies, so they could be used as biosorbent handling metal pollution waters. The effectiveness of C. remediation cadmium (Cd) would tested this present study. were cultured for 14 days photobioreactor which was an enclosed chamber that fully aerated and illuminated with LED lamps. Cadmium concentrations 0 (control), 0.05, 0....

Microalgae consume carbon dioxide for their growth and to produce secondary metabolites. One of the control system challenges is to maximize this carbon dioxide consumption by controlling microalgae growth, and by maintaining its growth rate at an optimal value. However, there is no such thing as a microalgae growth rate sensor. This paper proposes a software sensor for the specific growth rate...

A nonlinear lightand nitrate-limited phytoplankton growth model in a photobioreactor is presented. Its qualitative steady input-output behaviour is studied and compared to biological observations of the evolution of ratios between nitrogen, carbon, chlorophyll with respect to the two considered inputs (light and dilution rate). A qualitative validation of the model is provided. The steady input...

Because algal cells are so efficient at absorbing incoming light energy, providing more light energy to photobioreactors would simply decrease energy conversion efficiency. Furthermore, the algal biomass productivity in photobioreactor is always proportional to the total photosynthetic rate. In order to optimize the productivity of algal photobioreactors (PBRs), the oxygen production rate shoul...

This paper presents results from stability analysis and testing on high pressure CO2 centrifugal compressors, beginning by a preliminary analysis conducted on an academic institution. It includes results of stability tests that were carried out in manufacturer facilities. The tests were done on two different compressor designs, both operating with high content of CO2 in super critical condition...

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The marine diatom Phaeodactylum tricornutum can accumulate up to 30% of the omega-3 long chain polyunsaturated fatty acid (LC-PUFA) eicosapentaenoic acid (EPA) and, as such, is considered a good source for the industrial production of EPA. However, P. tricornutum does not naturally accumulate significant levels of the more valuable omega-3 LC-PUFA docosahexaenoic acid (DHA). Previously, we have...