Abstract
The hydroesterification process is presented for biodiesel production from Nannochloropsis oculata microalgae biomass. Biodiesel studied in this work is the main product from hydroesterification of biomass, the Nannochloropsis oculata, and was obtained from esterification of fatty acid (product of an hydrolysis reaction) with methanol. As catalyst we used the pure niobium oxide (NP) as well as supported on alumina (Nb2O5/Al2O3) (NS) and impregnated with phosphoric acid (Nb2O5/H3PO4) (NIF). The product was evaluated by gas chromatography and other analyses. The optimum conditions found in the conversion (%) for the hydrolysis reactions of Nb2O5 (88.86%), by Nb2O5/Al2O3 (92.00%) and Nb2O5/H3PO4 (95.45%), were observed in the biomass concentration 20%, 300°C. For esterification of fatty acids of Nannochloropsis oculata with NP (86.03%), NS (93.55%) and NIF (95.43%), we observed the molar ratio methanol: fatty acid 3:1, at 200°C with 20% of catalyst.
Keywords: Biodiesel, Microalgae, Hydrolysis, Esterification, Nannochloropsis oculata, Niobium oxide catalyst, Alumina, Phosphoric acid.
Current Organic Chemistry
Title:Hydroesterification of Nannochloropsis oculata Microalga’s Biomass to Biodiesel Using as Catalyst Pure Niobium Oxide (Nb2O5), Niobium Oxide Supported on Alumina (Nb2O5/Al2O3) and Niobium Oxide Impregnated with Phosphoric Acid (Nb2O5/H3PO4)
Volume: 17 Issue: 12
Author(s): Gisel Chenard Díaz, Yordanka Reyes Cruz, Gisele G.T. Leite, Donato A. G. Aranda, Ángel Almarales Arceo, Nelson C. Furtado and Carlton A. Taft
Affiliation:
Keywords: Biodiesel, Microalgae, Hydrolysis, Esterification, Nannochloropsis oculata, Niobium oxide catalyst, Alumina, Phosphoric acid.
Abstract: The hydroesterification process is presented for biodiesel production from Nannochloropsis oculata microalgae biomass. Biodiesel studied in this work is the main product from hydroesterification of biomass, the Nannochloropsis oculata, and was obtained from esterification of fatty acid (product of an hydrolysis reaction) with methanol. As catalyst we used the pure niobium oxide (NP) as well as supported on alumina (Nb2O5/Al2O3) (NS) and impregnated with phosphoric acid (Nb2O5/H3PO4) (NIF). The product was evaluated by gas chromatography and other analyses. The optimum conditions found in the conversion (%) for the hydrolysis reactions of Nb2O5 (88.86%), by Nb2O5/Al2O3 (92.00%) and Nb2O5/H3PO4 (95.45%), were observed in the biomass concentration 20%, 300°C. For esterification of fatty acids of Nannochloropsis oculata with NP (86.03%), NS (93.55%) and NIF (95.43%), we observed the molar ratio methanol: fatty acid 3:1, at 200°C with 20% of catalyst.
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Díaz Chenard Gisel, Cruz Reyes Yordanka, Leite G.T. Gisele, Aranda A. G. Donato, Arceo Almarales Ángel, Furtado C. Nelson and Taft A. Carlton, Hydroesterification of Nannochloropsis oculata Microalga’s Biomass to Biodiesel Using as Catalyst Pure Niobium Oxide (Nb2O5), Niobium Oxide Supported on Alumina (Nb2O5/Al2O3) and Niobium Oxide Impregnated with Phosphoric Acid (Nb2O5/H3PO4), Current Organic Chemistry 2013; 17 (12) . https://dx.doi.org/10.2174/1385272811317120009
DOI https://dx.doi.org/10.2174/1385272811317120009 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |
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