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BPPT conducted the mass of CO2 gas calculation in the gas absorption experimentsÂ with phytoplankton cultivation in the photobioreaktor (FBR) batch and continous syatemÂ using the ideal gas equation. This study stated that the method of calculation with theÂ ideal gas equation is more simple and practical in providing data analysis comparedÂ with biomass methods. Some things to note in this method include good knowledgeÂ about the movement of the gas flow diagram of inputs and outputs FBR, an appropriateÂ gas sampling, and accuracy of measuring instruments. The required data in theÂ mass calculation of CO2 gas in a batch photobioreactor system was resultant CO2Â concentration during measurement. Meanwhile in a continuous systems, the required
data was CO2 concentration at the reactor input and output , the rate and duration ofÂ the injection gas.
Keywods : massa gas CO2, dry weight, ideal gas formula
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