703-706Palm
oil mill effluent (POME) is one of the waste water with highest organic content
that could increase the formation of algal bloom. However, this can be taken to
advantage in terms of extracting lipids from the microalgae which can be used
as feedstock for biodiesel production. The light regimes submitted to the algal
cultures are considered to be an important factor for determining the
productivity and yield of photosynthetic reactions. The aim of this study was
to evaluate the effect of photo period on the biomass and lipid production by
locally isolated microalgae, Chlorella pyrenoidosa in photo bioreactor
(PBR) system. The cultures were grown at temperatures of 24 ºC - 26ºC and
supplied with light density of 150 mol m-2s-1. The light cycles evaluated were
24:0, 16:8 and 8:16 (day: night), respectively. The highest amount of biomass
39.41 g/L. and 42 mg/L.d of lipid productivity were obtained under continuous
illumination