Study of microalgae culturing system for CO2 elimination and O2 recovery system in closed air

概要

論文の詳細を見る
We have investigated several microalgal culturing systems for CO2 elimination and O2 regeneration in closed air. We constructed an experimental microalgal culturing system and studied the effects of temperature, pH, O2 concentration in a supply gas using a reactor aerated with low CO2 concentration (1000ppm) on the cell growth of Chlorella sorokiniana ATCC22521 and the CO2 elimination rate in a reaction vessel on batch culture. We also studied repeated batch culture under a low concentration of CO2. Our study suggested that the CO2 concentration in the supply gas limitted the algal system performance. We tested the system under a high concentration of CO2 (5%) as an optimum growth condition of Chlorella sorokiniana ATCC22521 cells on batch culture and repeated batch culture as a first step of continuous culture. As a result, we confirmed that the maximum CO2 elimination rate under a high concentration of CO2 was about 5 times higher and the maximum chlorophyll synthesis was about 2 times higher than those values under the low concentration of CO2. The gas exchange efficiency under the high concentration of CO2 was little affected by bacterial contamination in comparison with being under a low concentration of CO2. The maximum O2 evolution rate and CO2 elimination rate showed little difference among each tested concentration of nitrogen source but the nitrogen source concentration in the culture medium was one of the most important factors to maintain the performance of O2 evolution and CO2 elimination in the system.
生態工学会の論文

Study of microalgae culturing system for CO<SUB>2</SUB> elimination and O<SUB>2</SUB> recovery system in closed air

スポンサーリンク

概要

生態工学会 | 論文

スポンサーリンク