Thermal Hydrolysis of Orange Peel and its Fermentation with Alginate Beads to Produce Ethanol
Brenda Corona Vázquez,
Gabriela Roa-Morales,
Reyna Natividad Rangel,
Patricia Balderas Hernandez,
Jaime Saucedo Luna
Affiliations
Brenda Corona Vázquez
Centro Conjunto de Investigación en Química Sustentable, Facultad de Química, Universidad Autónoma del Estado de México, Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, México; Mexico
Gabriela Roa-Morales
Centro Conjunto de Investigación en Química Sustentable, Facultad de Química, Universidad Autónoma del Estado de México, Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, México; Mexico
Reyna Natividad Rangel
Centro Conjunto de Investigación en Química Sustentable, Facultad de Química, Universidad Autónoma del Estado de México, Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, México; Mexico
Patricia Balderas Hernandez
Centro Conjunto de Investigación en Química Sustentable, Facultad de Química, Universidad Autónoma del Estado de México, Toluca-Atlacomulco Km. 14.5, Toluca, Estado de México, 50200, México; Mexico
Jaime Saucedo Luna
Universidad Michoacana de San Nicolas de Hidalgo; Mexico
Orange peel (OP) was subjected to thermal hydrolysis at temperature (T) and pressure (P) values lower than 180 °C and 1000 kPa, respectively, to minimize the energy consumption and obtain a good ethanol yield. The process was conducted in an autoclave, a pressurized reactor for studying the effect of T (120 to 180 °C), P (500 to 1000 kPa), gas type (N2 or CO2), and OP loading (2.5 x10-2 and 5 x10-2 gmL-1) on the reducing sugars yield. The results were compared with those from acid hydrolysis. Hydrolysates were fermented using immobilized yeast on alginate beads, and the highest ethanol yield of 33.14 g/L was obtained from OP treated at 120 °C. Under these conditions, a minimum of 1,407 kWh energy consumption was achieved.
