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Title: Biofuel production from Nannochloropsis oculata microalgae in seawater without harvesting and dewatering over alumina-silicate supported nickel catalysts
Authors: Deliismail, Özgün
Özdoğru, Bertan
Şeker, Erol
Keywords: Biofuel
Low pressure direct conversion
Nannochloropsis oculata
Sol-gel heterogeneous catalyst
Issue Date: 2018
Publisher: Elsevier
Abstract: The aim of this work was to study the production of biofuels from marine Nannochloropsis oculata without harvesting and dewatering over the single step sol-gel made alumina-silicate supported nickel catalysts at 80 °C and 1.0 atm. Sulfuric acid, hydrochloric acid, and nitric acid were used in the sol-gel to study the effect of acid type on catalyst activities. The catalyst made using sulfuric acid resulted in 74% microalgae conversion as compared to the catalysts made with other acids. Treatment of this catalyst with ~35 g of NaCl per kg of water at 80 °C and 1.0 atm for 24 h increased microalgae conversion to 91.5% under the same reaction condition and the bio-fuels ranging from mono/polysaccharides, polyols to esters and fatty acids were produced. This study showed that nickel and 25.1 ?mol/g of total acidity and acidic strength having 130–380 °C of temperature range was necessary to achieve 91.5% conversion. © 2018 Elsevier Ltd
ISSN: 2589014X
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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