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Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy

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División Académica Multidisciplinaria de Jalpa de Méndez (DAMJM), Universidad Juárez Autónoma de Tabasco (UJAT), Carret. Estatal Libre Villahermosa-Comalcalco Km. 27+000 s/n Ranchería Ribera Alta. Jalpa de Méndez, Tabasco C.P. 86205, Mexico
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División Académica de Ingeniería y Arquitectura (DAIA), Universidad Juárez Autónoma de Tabasco (UJAT), Carret. Cunduacán-Jalpa de Méndez Km 1. Col. La Esmeralda. Cunduacán, Tabasco C.P. 86690, Mexico
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Departamento de Ciencias Básicas, Tecnológico Nacional de México en Celaya, Apartado Postal 57, Celaya 38010, Mexico
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Departamento de Ingeniería Bioquímica, Tecnológico Nacional de México en Celaya, Apartado Postal 57, Celaya 38010, Mexico
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Author to whom correspondence should be addressed.
Energies 2020, 13(2), 413; https://doi.org/10.3390/en13020413
Received: 3 December 2019 / Revised: 29 December 2019 / Accepted: 10 January 2020 / Published: 15 January 2020
A current concern is the increase in greenhouse gas emissions, mainly CO2, with anthropogenic sources being the main contributors. Microalgae have greater capacity than terrestrial plants to capture CO2, with this being an attraction for using them as capture systems. This study aims at the techno-economic evaluation of microalgae biomass production, while only considering technologies with industrial scaling potential. Energy consumption and operating costs are considered as parameters for the evaluation. In addition, the capture of CO2 from a thermoelectric plant is analyzed, as a carbon source for the cultivation of microalgae. 24 scenarios were evaluated while using process simulation tools (SuperPro Designer), being generated by the combination of cultivations in raceway pond, primary harvest with three types of flocculants, secondary harvest with centrifugation and three filtering technologies, and finally the drying evaluated with Spray and Drum Dryer. Low biomass productivity, 12.7 g/m2/day, was considered, achieving a capture of 102.13 tons of CO2/year in 1 ha for the cultivation area. The scenarios that included centrifugation and vacuum filtration are the ones with the highest energy consumption. The operating costs range from US $ 4.75–6.55/kg of dry biomass. The choice of the best scenario depends on the final use of biomass. View Full-Text
Keywords: microalgae; cultivation; harvest; drying; bioprocess simulation; energy demand; production cost microalgae; cultivation; harvest; drying; bioprocess simulation; energy demand; production cost
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Valdovinos-García, E.M.; Barajas-Fernández, J.; Olán-Acosta, M.Á.; Petriz-Prieto, M.A.; Guzmán-López, A.; Bravo-Sánchez, M.G. Techno-Economic Study of CO2 Capture of a Thermoelectric Plant Using Microalgae (Chlorella vulgaris) for Production of Feedstock for Bioenergy. Energies 2020, 13, 413.

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