Effect of cell growth phase on hydrogen production by Chlamydomonas reinhardtti

Abstract

Effect of cell growth phase on hydrogen production was investigated with Chlamydomonas reinhardtti. Cells were continuously cultured in photobioreactor and taken at different growth phase to produce hydrogen. Hydrogen production by cells of different growth phase was compared under dark fermentation and sulfur deprivation. Hydrogen production by cells of mid or late exponential phase was higher than cells of early exponential phase or stationary phase in dark fermentation. Under sulfur deprivation, cell growth phase did not affect hydrogen production rate.