Yazar "Ayas, Nezihe" için Kimya Mühendisliği Bölümü listeleme
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Catalytic Esterification and Transesterification Reaction of High Acidic Value Waste Oil by Microwave Heating
Ayas, Nezihe; Yılmaz, Özlem (Wiley, 2015)In this study, biodiesel production from waste cooking oil was investigated. Esterification and transesterification reactions were carried out under microwave irradiation using heterogeneous (Amberlyst-15) and homogeneous ... -
Hydrogen from Tobacco Waste
Ayas, Nezihe; Karadeniz, Serkan (IEEE, 2017)In order to meet the energy demand and to have a cleaner environment, the interest in new and renewable energy sources has been increasing. In this regard, biomass is one of the renewable energy sources and it can be used ... -
Hydrogen production from tea waste
Ayas, Nezihe; Esen, Tugce (Pergamon-Elsevier Science LTD, 2016)Hydrogen production from biomass is gaining more attention due to the depletion of fossil fuel sources. Tea waste as an agricultural waste is a promising feedstock in order to obtain hydrogen-rich gas via gasification. In ... -
Preparation of Ni-based catalysts to produce hydrogen from glycerol by steam reforming process
Yurdakul, M.; Ayas, Nezihe; Bizkarra, K.; El Doukkali, M.; Cambra, J. F. (Pergamon-Elsevier Science LTD, 2016)Nickel and Nickel-Palladium-catalysts supported on Al2O3-ZrO2, Al2O3-ZrO2-La2O3 and on Olivine were synthesized using a combination of sol-gel and wet impregnation methods. The influence of the formulation on their textural ... -
A shrinking core model and empirical kinetic approaches in supercritical CO2 extraction of safflower seed oil
Ayas, Nezihe; Yılmaz, Özlem (Elsevier, 2014)Utilization of supercritical CO2 in safflower seed extraction was performed using a semi-batch extractor. Different extraction parameters, such as 40-60 MPa pressure, 323-347 K temperature, 20-76 min time, and 1-3 mL/min ... -
Thermodynamic modeling of the water-gas shift reaction in supercritical water for hydrogen production
Demirel, Etli Pınar; Ayas, Nezihe (Maik Nauka/Interperiodica/Springer, 2017)In this study, a computational model is developed for the estimation of the equilibrium composition of WGSR (water gas shift reaction) based on the stoichiometric and nonstoichiometric thermodynamic approaches. The model ... -
The use of full factorial design for modeling the effects of process parameters on decolorization of Reactive Yellow 15 by using Fe/ZrO2 catalyst
Aşçı, Yeliz; Ayas, Nezihe; Demirtaş, Ezgi Aktar (Desalination Publ, 2017)This study is an application of full factorial design to determine the effects of operational parameters on heterogeneous Fenton oxidation of Reactive Yellow 15 (RY15). Fenton oxidation was conducted using a Fe/ZrO2 catalyst ... -
USING OF Fe/ZrO2 CATALYST TO REMOVE DIRECT ORANGE 26 FROM WATER BY FENTON OXIDATION AT WIDE pH VALUES
Ayas, Nezihe; Aşçı, Yeliz; Yurdakul, Merve (Parlar Scientific Publications (PSP), 2016)In the present study, in order to promote the practical application of the heterogeneous Fenton oxidation in wastewater treatment, Fe/ZrO2 catalyst was prepared and used in decolorization of Direct Orange 26 (DO26) over a ... -
Using of Fe/ZrO2 catalyst to remove direct orange 26 from water by Fenton oxidation at wide pH values
Ayas, Nezihe; Aşçı, Yeliz; Yurdakul, Merve (Parlar Scientific Publications, 2016)In the present study, in order to promote the practical application of the heterogeneous Fenton oxidation in wastewater treatment, Fe/ZrO2 catalyst was prepared and used in decolorization of Direct Orange 26 (DO26) over a ...