Nezihe Ayas
Professor at Anadolu University, Turkey
Title: Production of hydrogen rich gas from tea waste
Biography
Biography: Nezihe Ayas
Abstract
Hydrogen is an energy carrier, which stores and delivers energy and produced from fossil fuels and renewable energy sources such as biomass, wind, solar, geothermal, and hydroelectric power to split water. Biomass gasification is a process in which biomass is converted into gaseous components by applying heat in the presence of air/oxygen and steam. Within the scope of this study, tea waste was gasified in the presence of Ni-CeO2/Al2O3 catalysts using air as gasifying agents. The Ni-CeO2/Al2O3 catalyst was synthesized by the co-impregnation method and characterized by XRD, XRF, SEM and BET techniques. The effect of gasification parameters such as temperature (650, 850 oC), CeO2 loading (0-40 wt.%) at constant 3 L/h air flow rate, on the gaseous product distribution was examined. The main gas components were determined as H2, CH4, CO, and CO2 by micro gas chromatography analyzer. The maximum H2 content of the gas mixture was achieved as 5.98 mol H2/kg tea waste at 850 oC, 15 min., 20% catalyst ratio and 3 L/h air flow rate in the presence of Ni-CeO2/Al2O3 contained 40% CeO2.