Güncel Gönderiler: Mühendislik Fakültesi
Toplam kayıt 2037, listelenen: 701-720
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A shrinking core model and empirical kinetic approaches in supercritical CO2 extraction of safflower seed oil
(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 ... -
Catalytic Esterification and Transesterification Reaction of High Acidic Value Waste Oil by Microwave Heating
(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
(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 ... -
Thermo-catalytic co-pyrolysis of recovered heavy oil and municipal plastic wastes
(Elsevier Science BV, 2016)In this work municipal plastic wastes were co-pyrolyzed together with waste plastic derived heavy oil at 500 degrees C in a stirred batch reactor using beta-zeolite, y-zeolite and m-Ni-Mo-catalysts. The effect of the heavy ... -
Comparison of real waste (MSW and MPW) pyrolysis in batch reactor over different catalysts. Part II: Contaminants, char and pyrolysis oil properties
(Elsevier Sci LTD, 2013)Pyrolysis of real wastes (MPW and MSW) has been investigated at 500 degrees C, 550 degrees C and 600 degrees C using Y-zeolite, beta-zeolite, equilibrium FCC, MoO3, Ni-Mo-catalyst, HZSM-5 and Al(OH)(3) as catalysts. The ... -
Influence of temperature and alumina catalyst on pyrolysis of corncob
(Elsevier Sci LTD, 2009)Corncob has been investigated as an alternative feedstock to obtain fuels and chemicals via pyrolysis in fixed-bed reactor. The influence of pyrolysis temperature in the range 300-800 degrees C as well as the catalyst ... -
Optimization of bio-oil production using response surface methodology and formation of polycyclic aromatic hydrocarbons (PAHs) at elevated pressures
(Elsevier Science BV, 2016)This paper aims at the optimization of bio-oil yield obtained from poplar sawdust pyrolysis. A response surface methodology was carried out to optimize the experimental conditions. The factors investigated were temperature, ... -
Production of char from hornbeam sawdust and its performance evaluation in the dye removal
(Elsevier Science BV, 2013)Hornbeam sawdust was used as a biomass sample in the experiments involving char production. Within this purpose, a slow pyrolysis of the biomass sample was carried out in a fixed-bed reactor. The chemical characteristics ... -
Pressurized pyrolysis of dried distillers grains with solubles and canola seed press cake in a fixed-bed reactor
(Elsevier Sci LTD, 2015)Pressurized pyrolysis of biomasses was carried in a fixed bed reactor to obtain gases, bio-oils and chars at elevated temperatures. The products were characterized by GC-MS, FTIR, viscometer, SEM, BET and EDXRFS methods. ... -
The regression analysis of fast pyrolysis product yields and determination of product quality
(Elsevier Sci LTD, 2012)The main objective of this study was to investigate the influence of pyrolysis parameters on product yields with experimental and to evaluate of results with the regression models. For this purpose; horn-beam sawdust was ... -
Thermal decomposition behavior of tobacco stem Part I: TGA-FTIR-MS analysis
(Taylor & Francis Inc, 2016)In the present study, the thermal degradation behavior of tobacco stem was examined by means of a thermogravimetric analyzer (TGA) under nitrogen atmosphere at temperature range of 25-1,000 degrees C. The TG curve indicated ... -
Synthetic fuel production from cottonseed: Fast pyrolysis and a TGA/FT-IR/MS study
(Elsevier, 2014)This study investigates the thermal decomposition behavior of cottonseed via TGA/FT-IR/MS and the quantification/characterization of liquid products from fast pyrolysis. Thermal degradation of the biomass sample has occurred ... -
Evaluation of the role of the pyrolysis temperature in straw biomass samples and characterization of the oils by GUMS
(American Chemical Society, 2008)The aim of this study is to investigate the variation of thermal conversion of agricultural wastes in a fixed bed reactor with temperature and elucidating the chemical structure of oil products formed during the process. ... -
The Evaluation of Mesoporous Materials as Catalyst in Fast Pyrolysis of Wheat Straw
(Taylor & Francis Inc, 2015)In this study, wheat straw was chosen as a biomass sample and the fast pyrolysis of this sample was carried out with or without catalyst at different conditions in a well-swept fixed-bed reactor. Experiments were carried ... -
Thermal decomposition behavior of tobacco stem Part II: Kinetic analysis
(Taylor & Francis Inc, 2016)As a continuation of the previous study on the thermal degradation behavior of tobacco stem, this work is focused on the kinetics of pyrolytic decomposition. Thermogravimetric analysis of tobacco stem samples was conducted ... -
Catalytic Pyrolysis of Biomass: Yields and Characterization of the Products
(Amer Soc Mechanical Engineers, 2009)Terpene hydrocarbons are high energy capacity hydrocarbons. The most known terpenoid biomass is Euphorbiaccae family. Euphorbia rigida, a member of Euphorbiaccae, was used as the biomass feedsock and natural zeolite was ... -
Leaching of F-type fly ash based geopolymers
(Elsevier Science BV, 2012)Geopolymers are the synthetic analogues of natural zeolitic materials. Geopolymeric materials possess excellent mechanical properties, including fire and acid resistance. These properties make geopolymers an alternative ... -
An experimental study on the mechanical and microstructural properties of geopolymers
(Elsevier Science BV, 2012)Geopolymer is a new class of inorganic polymer synthesized by activation of an aluminosilicate source with an alkaline hydroxide or silicate solution. In recent years, geopolymeric materials have attracted much more attention ... -
Preparation and characterization of pyrolytic chars from different biomass samples
(Elsevier Science BV, 2012)In the present work four different biomass samples (pine cone, soybean cake, corn stalk and peanut shell) were pyrolyzed to 550 degrees C in an inert gas atmosphere and a comparison between the properties of chars produced ... -
Humulus lupulus As a Raw Material for Bio-oil Production via Slow Pyrolysis
(Gazi University, 2017)Humulus lupulus, a kind of hop plant agricultural waste was pyrolysed in a fixed bed reactor with a heating rate of 10 degrees C min(-1) in the presence of N-2 atmosphere. The effect of pyrolysis temperature was investigated ...
