Effect of environmental factors on the growth of the
Chlorella vulgaris
was
studied.
C. vulgaris was cultivated in sterilized natural seawater enriched with F/2-Si
medium. Then grow in bucket, tub and photobioreactor (PBR) in outdoor condition. The
daily routine work consisted of culture checkups of optical density, biomass gains,
atmosphere lux, culture lux, atmosphere temperature and culture temperature were
recorded. The highest biomass yields were (3.0 μg/ml
-1) in December and (2.01 μg/ml
-1) in
November in PBR. The highest deviation was in atmosphere lux in time 8:30 (± 117.7) and
lowest deviation was in atmosphere temperature in time 15:00 (± 1.0499). Optical density
(OD) indicated that the best growth of
C. vulgaris in outdoor condition was obtained in 650
lux and also it increased with increasing amount of lux. Tub report of
C. vulgaris showed
different growing behaviors at the various concentration of light and at the different
temperatures. Algal production in outdoor PBR is relatively inexpensive, but is only
suitable for a few, fast-growing specie. Finally, this fact is noteworthy that in outdoor
conditions, temperature and light have important role in growth of
C. vulgaris in present
study.
