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American University in Cairo (2019)

Utilization of Chlorella vulgaris for biomass production and treatment of wastewater from greenhouse farms

Adam, Yousif

Titre : Utilization of Chlorella vulgaris for biomass production and treatment of wastewater from greenhouse farms

Auteur : Adam, Yousif

Université de soutenance : American University in Cairo

Grade : Master of Science in Environmental Engineering 2019

Résumé partiel
In the current research work, green microalgae C. vulgaris was used for treating hydroponic and aquaponic wastewater collected from the Center for Applied Research on the Environment and Sustainability (CARES) at The American University in Cairo (New Cairo, Egypt) and for producing biomass. The present study was undertaken to evaluate the use of microalgae for bioremediating wastewater from greenhouse farm and for producing biomass under different conditions and to explore the economic implications of microalgal biofuels, focusing on the effect of different cultivation modes. Various experiments were carried out into four phases to assess the effect of different conditions into the nutrient removal and biomass production of C. vulgaris. It was observed that the cultivation of C. vulgaris under mixotrophic mode was found to be more beneficial in the bioremediation of hydroponic and aquaponic wastewater and in the production of biomass than heterotrophic and autotrophic modes of cultivation. The effect of different nitrogen to phosphorous molar ratios into nutrient removal and biomass production has also been assessed. Techno-economic assessment of microalgal biofuels has also been conducted, with a focus on the effect of different cultivation modes. The best results in terms of total nitrogen and total phosphorous treatment efficiency were reported for mixotrophic growth supplied with 2.5 g/l glucose and atmospheric CO2, showing reasonable removals of total nitrogen (TN) (98.5%), total phosphorus (TP) (99.99%) for hydroponic wastewater sample, and TN (98.5%), TP (99.9%) for aquaponic wastewater sample.

Mots clés : Wastewater Treatment , Biomass Production , Techno-economic Assessment , Egypt

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Page publiée le 23 décembre 2020