Journal of Fundamentals of Renewable Energy and Applications

Journal of Fundamentals of Renewable Energy and Applications
Open Access

ISSN: 2090-4541

+44 1300 500008

Effect of aeration flow rate on the growth of microalgae as a biofuel feedstock and wastewater treatment


International Congress and Expo on Biofuels & Bioenergy

August 25- 27, 2015 Valencia, Spain

Harrison Onome Tighiri and Emrah Ahmet Erkurt

Scientific Tracks Abstracts: J Fundam Renewable Energy Appl

Abstract :

The objectives of this study is to evaluate the effect of aeration inlet gas flow rate on the growth of microalgae as a sustainable
biofuel feedstock and also the use of these cultured microalgae as a means of biological nutrient removal medium in
wastewater. The natural lagoon water from the New Nicosia membrane bioreactor WWTP containing microalgae was inoculated
at 5% (Vinoculation/Vmedia) in 2000 mL BG 11 culture medium and was placed under Esco Class II Biosafety Cabinet photobioreactor
in the laboratory and was supplied with different levels of aeration, under continuous illumination of white fluorescent light
of 45-50μmol photon m-2s-1 for two weeks, afterwards the microalgae from the BG 11 was adjusted to an absorbance of 1.5 and
further innoculated to treat wastewater collected from fine screen chambers of New Nicosia membrane bioreactor WWTP. The
final biomass yield of trial II (4.5 L/Min aeration flow rate) culture media with value of 0.605 g/L was higher than trial I (9.0
L/Min aeration flow rate) and III (without aeration) with values of 0.418 g/L and 0.207 g/L respectively. The final Chlorophyll
α content of the microalgae cultivated in trial II was higher with value of 2.450 μg/mL than trial I and III with values of
0.906 μg/mL and 0.903 μg/mL respectively. The concentration of total nitrogen and phosphorus from the fine screen chamber
wastewater of NNMBRWWTP was reduced 105.909 mgN/L to 1.847 mgN/L and 6.442 mg P/L to 0.932 mg P/L respectively,
with microalgae dry biomass yield value of 1.284 g/L and the nitrogen and phosphorus removal efficiency was 98.256% and
83.078 % respectively over 5 days. From the result gotten from the study, we could say that aeration culture media with 4.5 L/Min
was better, since it increase the growth rate of microalgae which is therefore suitable for biofuel production and also microalgae
could be used as a secondary treatment for wastewater containing high nutrient from the research resulted reported.

Biography :

Harrison Onome Tighiri, holds a B.Sc. in Fisheries and Aquaculture technology from Delta State University, Nigeria (class of 2012) and a M.Sc. in Environmental Science
from Cyprus International University, KKTC, Turkey (class of 2015). He is actively involve in Microlagae biofuel production, wastewater treatment, Biomass scenario
modeling, life cycle analysis research, he has also won several academic and research awards and currectly looking forward to start his PhD.

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