Microalgae cultivation under heterotrophic andphototrophic conditions for nutrient recoveryfrom wastewater
Başlık çevirisi mevcut değil.
- Tez No: 715944
- Danışmanlar: DR. MİLLER ALONSO CAMARGO-VALERO
- Tez Türü: Doktora
- Konular: İnşaat Mühendisliği, Civil Engineering
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 2020
- Dil: İngilizce
- Üniversite: University of Leeds
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 209
Özet
Özet yok.
Özet (Çeviri)
Nutrients such as nitrogen and phosphorus are the most important elements for living species, as they are used to synthesise the main components of cells; however, they are also considered amongst the main pollutants responsible for adverse effects on aquatic environments (e.g., eutrophication). Current nutrient control technologies at wastewater treatment works rely heavily on bacterial processes for nitrogen and phosphorus removal. Although these processes are effective at removing nutrients, microalgae cultivation has shown considerable promise in this regard with the further benefit of achieving more stringent discharge levels and increasing overall sustainable resource management. This PhD research aims to optimise both phototrophic and heterotrophic cultivation of microalgae as an alternative means for nutrient control and recovery in sewage treatment works. Chlamydomonas reinhardtii was used as a model species due to its ability to grow under both phototrophic and heterotrophic conditions and common presence in wastewater pond treatment systems. With regard to algal growth kinetics studies, higher specific growth rates were achieved under heterotrophic conditions than under phototrophic cultivation. Nitrate was found as the preferred nitrogen source under both heterotrophic and phototrophic cultivation. Higher specific growth rates for heterotrophic and phototrophic microalgae were obtained at lower carbon concentrations. With regard to the optimisation of a two-stage biological process combining phototrophic and heterotrophic cultivation under continuous flow with biomass recycling, the optimum operational conditions were determined as 48 h of hydraulic retention time (HRT) and 14 d of cell retention time (CRT) when a mix of ammonium and nitrate was used; recovery efficiencies for phosphorus and nitrogen were 40.0 and 93.2%, respectively. Nitrogen and phosphorus content in harvested Chlamydomonas reinhardtii varied from 5.3 to 9.6% and from 0.6 to 1.2% of dry biomass, respectively, and depending on operational conditions. Overall, the proposed two-stage biological process exhibited considerable potential for implementation in large wastewater treatment works to achieve simultaneous nutrient control and recovery. In order to assess its potential, from the perspective of its technical feasibility, a mass flow analysis of nutrients was conducted by using Yorkshire Water's Esholt Wastewater Treatment Works as a case study
Benzer Tezler
- Farklı Chlorella türlerinin biyodizel ve atık su arıtımında kullanılmak üzere üretimi
Production of different Chlorella species used in biodiesel and waste water treatment
TOGAYHAN KUTLUK
Doktora
Türkçe
2019
BiyoteknolojiKocaeli ÜniversitesiKimya Mühendisliği Ana Bilim Dalı
DR. ÖĞR. ÜYESİ NURCAN KAPUCU
- Optimization of cultivation conditions and engineering by random mutagenesis for high lipid production in Schizochytrium sp. S31
Schizochytrium sp. S31'in üretim koşullarının iyileştirilmesi ve rastlantısal mutasyon ile geliştirilmesiyle yüksek oranda lipid eldesi
NURCAN VARDAR
Doktora
İngilizce
2016
Biyoteknolojiİstanbul Teknik ÜniversitesiMoleküler Biyoloji-Genetik ve Biyoteknoloji Ana Bilim Dalı
DOÇ. DR. NEVİN GÜL-KARAGÜLER
PROF. MELEK TÜTER
- Farklı karbon ve azot kaynaklarının Dunaliella salina mikroalginin miksotrofik büyümesine etkisi
Effect of various carbon and nitrogen sources on mixotrophic growth of Dunaliella salina microalgae
MELTEM FIÇICIOĞLU
Yüksek Lisans
Türkçe
2024
BiyomühendislikYıldız Teknik ÜniversitesiBiyomühendislik Ana Bilim Dalı
PROF. DR. DİDEM BALKANLI
- Integrated computational and experimental studies of microalgal lipids production
Birleştirilmiş deneysel ve programsal, mikroalglerden biodizel ve kimyasal üretimi çalışması
MESUT BEKİROĞULLARI
Doktora
İngilizce
2017
Kimya MühendisliğiThe University of ManchesterKimya Mühendisliği Ana Bilim Dalı
PROF. DR. CONSTANTINOS THEODOROPOULOS
- Biochemical and genetic assessment of high value lipid production from local thermo-resistant green microalgae strain
Isıl dirençli yerel yeşil mikroalg suşundan yüksek değerli lipit üretiminin biyokimyasal ve genetik açılardan değerlendirilmesi
DİLAN AKIN
Yüksek Lisans
İngilizce
2017
BiyoteknolojiOrta Doğu Teknik ÜniversitesiBiyoteknoloji Ana Bilim Dalı
PROF. DR. AYŞE MERAL YÜCEL
YRD. DOÇ. DR. ÇAĞLA SÖNMEZ