title: Productivity of outdoor algal cultures in enclosed tubular photobioreactor.
abstract: At quasi-steady-state outdoor cyclic fed batch cultures of Chlorella pyrenoidosa, the growth irradiance incidented on the tubular photobioreactor increased about fivefold between 9:00 a.m. and noon. Overheating of the cultures was observed, resulting in decreasing biomass output rate when culture temperature went above 40 degrees C. In cultures with temperature control, the quasi-steady-state output rate of all cultures increased throughout the day and leveled off in the late afternoon in high-density cultures. The daily area output rate was proportional to the density of the cultures. The specific growth rate of the light-limited cultures increased only marginally (20%) in the morning.
authors.affiliation: Department of Microbiology, Faculty of Medicine, National University of Singapore, Singapore, Republic of Singapore.
authors.forename: Y K
authors.initials: YK
authors.lastname: Lee
authors.forename: C S
authors.initials: CS
authors.lastname: Low