Akademik Veri Yönetim Sistemi
Tezin Türü: Yüksek Lisans
Tezin Yürütüldüğü Kurum: Van Yüzüncü Yıl Üniversitesi, Fen Bilimleri Enstitüsü, Çevre Mühendisliği ABD, Türkiye
Tezin Onay Tarihi: 2025
Tezin Dili: Türkçe
Öğrenci: ŞEHRİBAN ŞAHİN
Danışman: Melih Onay
Özet:
In recent years, microalgae have been widely used in
wastewater treatment and biofuel production. In this thesis study, Scenedesmus sp. microalgae species have
been proposed to produce bioethanol. Bioethanol
is one of the most popular types of biofuels due to its excellent properties. Scenedesmus sp. has been studied for its
bioethanol and carbohydrate content potential, nitrogen and phosphorus removal
characteristics, and resistance to contamination in dairy wastewater. Scenedesmus
sp. was grown and cultured in synthetic dairy wastewater
as part of this thesis investigation. The optical densities, biomass production
rates, nitrogen and phosphate removals of Scenedesmus
sp. were investigated by growing microalgae in TAP medium and dairy
wastewater at initially PO4-P concentrations of 1.5 mg/L, 3 mg/L, 7.5 mg/L, 15
mg/L, and 30 mg/L, respectively. The
highest biomass production rate has been found experimentally to be 132
mg/L/day at an initial PO4-P concentration of 7.5 mg/L. The maximum nitrogen
removal effectiveness was determined experimentally at an initial PO4-P
concentration of 7.5 mg/L. While the
amount of nitrogen was 75.03 mg/L at the beginning, this value decreased to
1.78 mg/L after removal. The removal rate was calculated as 97.62%.
Experimentally, the highest phosphorus removal efficiency was calculated as 96%
at an initial PO4-P concentration of 1.5 mg/L. Carbohydrate from these components was used to produce bioethanol, and
the carbohydrate concentration was approximately 4.36 g/L per 10 g/L biomass.
The bioethanol content was 2.12 g/L. As
a result, Scenedesmus sp. strain
could be used for large-scale bioethanol production in synthetic dairy
wastewater in the future.