TY - JOUR
T1 - Multi-component kinetics for the growth of the cyanobacterium synechocystis sp. PCC6803
AU - Kim, Hyun Woo
AU - Park, Seongjun
AU - Rittmann, Bruce
N1 - Publisher Copyright:
© 2015 Korean Society of Environmental Engineers.
PY - 2015
Y1 - 2015
N2 - The growth kinetics of phototrophic microorganisms can be controlled by the light irradiance, the concentration of an inorganic nutrient, or both. A multi-component kinetic model is proposed and tested in novel batch experiments that allow the kinetic parameters for each factor to be estimated independently. For the cyanobacterium Synechocystis sp. PCC6803, the estimated parameters are maximum specific growth rate (μmax) = 2.8/d, half-maximum-rate light irradiance (KL) = 11 W/m2, half-inhibition-rate light irradiance (KL,I) = 39 W/m2, and half-maximum-rate concentration for inorganic carbon (KS,Ci) = 0.5 mgC/L, half-maximum-rate concentration for inorganic nitrogen (KS,Ni) = 1.4 mgN/L, and half-maximum-rate concentration for inorganic phosphorus (KS,Pi) = 0.06 mgP/L. Compared to other phototrophs having μmax estimates, PCC6803 is a fast-growing r-strategist relying on reaction rate. Its half-maximum-rate and half-inhibition rate values identify the ranges of light irradiance and nutrient concentrations that PCC6803 needs to achieve a high specific growth rate to be a sustainable bioenergy source. To gain the advantages of its high maximum specific growth rate, PCC6803 needs to have moderate light illumination (7-62 W/m2 for μsyn ≥ 1/d) and relatively high nutrient concentrations: Ni ≥ 2.3 mgN/L, Pi ≥ 0.1 mgP/L, and Ci ≥ 1.0 mgC/L.
AB - The growth kinetics of phototrophic microorganisms can be controlled by the light irradiance, the concentration of an inorganic nutrient, or both. A multi-component kinetic model is proposed and tested in novel batch experiments that allow the kinetic parameters for each factor to be estimated independently. For the cyanobacterium Synechocystis sp. PCC6803, the estimated parameters are maximum specific growth rate (μmax) = 2.8/d, half-maximum-rate light irradiance (KL) = 11 W/m2, half-inhibition-rate light irradiance (KL,I) = 39 W/m2, and half-maximum-rate concentration for inorganic carbon (KS,Ci) = 0.5 mgC/L, half-maximum-rate concentration for inorganic nitrogen (KS,Ni) = 1.4 mgN/L, and half-maximum-rate concentration for inorganic phosphorus (KS,Pi) = 0.06 mgP/L. Compared to other phototrophs having μmax estimates, PCC6803 is a fast-growing r-strategist relying on reaction rate. Its half-maximum-rate and half-inhibition rate values identify the ranges of light irradiance and nutrient concentrations that PCC6803 needs to achieve a high specific growth rate to be a sustainable bioenergy source. To gain the advantages of its high maximum specific growth rate, PCC6803 needs to have moderate light illumination (7-62 W/m2 for μsyn ≥ 1/d) and relatively high nutrient concentrations: Ni ≥ 2.3 mgN/L, Pi ≥ 0.1 mgP/L, and Ci ≥ 1.0 mgC/L.
KW - Kinetics
KW - Light irradiance
KW - Nutrients
KW - Photoautotrophy
KW - Synechocystis sp. PCC6803
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U2 - 10.4491/eer.2015.033
DO - 10.4491/eer.2015.033
M3 - Article
AN - SCOPUS:84951020436
SN - 1226-1025
VL - 20
SP - 347
EP - 355
JO - Environmental Engineering Research
JF - Environmental Engineering Research
IS - 4
ER -