Stimulation of biodiesel production from two algae: Chlorella vulgarisBerjerinckandNitzschiapalea (Kütz.) Smith,and study their some growth parameters under different light intensity.

Abstract

Four different intensities treatments were used to stimulate the biodiesel production from two local isolated algae: Chlorella vulgarisBerjerinck and Nitzschiapalea (Kütz.) Smith. Also the study included the effect of light intensity on growth rates and primary product (carbohydrate and protein). The treatment 300μE\m2 \sec was recorded the highest lipid content 10% of dry weight (DW), highest carbohydrate content (18% of DW) and highest protein content (58% of DW) for C.vulgaris. While the alga N. paleathe highest values were recorded for lipid content (48% of DW), carbohydrate contents (22% of DW) and 15% of DW for protein content at treatments 300, 125 and 268μE\m2 \sec respectively. The results revealed that Stearic acid content was increased significantly at the treatments 300μE\m2 \sec for N. palea while the Oleic acid content increased significantly at 300μE\m2 \sec for C.vulgaris. The present study recorded Chrysocapsaplanctonica (West&West) Plscher as new recorded to Iraq algae flora.