Yazar "Pütün, Ersan" için Makale Koleksiyonu listeleme
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Bio-oil from olive oil industry wastes: Pyrolysis of olive residue under different conditions
Pütün, Ayşe Eren; Uzun, Başak Burcu; Apaydın-Varol, Esin; Pütün, Ersan (Elsevier Science BV, 2005)Olive residues were pyrolysed in a fixed bed reactor under different pyrolysis conditions to determine the role of final temperature, sweeping gas flow rate and steam velocity on the product yields and liquid product ... -
Bio-oil production from pyrolysis and steam pyrolysis of soybean-cake: product yields and composition
Pütün, Ayşe Eren; Apaydın, Elif; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2002)The slow pyrolysis of soybean cake in a fixed-bed reactor was investigated under three different atmospheres: static, for determining the effects of pyrolysis temperature and particle size, nitrogen and steam. The liquid ... -
Biodiesel production from waste frying oils: Optimization of reaction parameters and determination of fuel properties
Uzun, Başak Burcu; Kılıç, Murat; Özbay Nurgül; Pütün, Ayşe Eren; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2012)Alkali-catalyzed transesterification of waste frying oils (WFO) was carried out in various conditions to investigate the effects of catalyst concentration, reaction time, methanol/oil molar ratio, reaction temperature, ... -
Catalytic pyrolysis of perennial shrub, Euphorbia rigida in the water vapour atmosphere
Ateş, Funda; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Science BV, 2005)In this study, the perennial shrub Euphorbia rigida, was used as biomass sample for catalytic pyrolysis using Co-Mo commercial catalyst (Criterion-534) in the water vapour atmosphere. Experimental studies were conducted ... -
Comparative studies on adsorptive removal of heavy metal ions by biosorbent, bio-char and activated carbon obtained from low cost agro-residue
Kırbıyık, Cisem; Pütün, Ayşe Eren; Pütün, Ersan (Iwa Publishing, 2016)In this study, Fe(III) and Cr(III) metal ion adsorption processes were carried out with three adsorbents in batch experiments and their adsorption performance was compared. These adsorbents were sesame stalk without ... -
Converting of oil shale and biomass into liquid hydrocarbons via pyrolysis
Kılıç, Murat; Pütün, Ayşe Eren; Uzun, Başak Burcu; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2014)In this study, co-pyrolytic behaviors of oil shale and Euphorbia rigida were investigated at different temperatures in a fixed bed reactor at 450, 500, and 550 degrees C with a heating rate of 10 degrees C/min in the ... -
Effect of steam on the pyrolysis of biomass
Pütün, Ayşe Eren; Özbay Nurgül; Pütün, Ersan (Taylor & Francis Inc, 2006)A comparative study of the thermochemical behavior of cottonseed cake in static, nitrogen and steam atmospheres has been carried out. The influence of the different atmospheres in the yield and composition were observed. ... -
Equilibrium, kinetic, and thermodynamic studies of the adsorption of Fe(III) metal ions and 2,4-dichlorophenoxyacetic acid onto biomass-based activated carbon by ZnCl2 activation
Kırbıyık, Cisem; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Science BV, 2017)This study investigated the preparation of activated carbon from low-cost biomass as precursor and the using of obtained activated carbon for the removal of Fe(III) and 2,4-D pollutants from model solution. The different ... -
Fast pyrolysis of soybean cake: Product yields and compositions
Uzun, Başak Burcu; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Sci LTD, 2006)This study was an investigation of the role of important parameters influencing pyrolysis yields from soybean cake. Experiments were carried out at temperatures ranging from 400 to 700 degrees C, for various nitrogen flow ... -
Fixed bed pyrolysis of Euphorbia rigida with different catalysts
Ateş, Funda; Pütün, Ayşe Eren; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2005)Since Euphorbia rigida is a celluloid plant with low fat content, the oil yields of previous fixed bed pyrolysis studies were low. In order to increase the oil yield, biomass pyrolysis experiments were performed in a fixed ... -
Fixed-bed pyrolysis and hydropyrolysis of sunflower bagasse: Product yields and compositions
Pütün, Ayşe Eren; Koçkar, Ömer Mete; Yorgun, S; Gerçel, Hasan Ferdi; Andresen, J; Snape, CE; Pütün, Ersan (Elsevier Science BV, 1996)Pyrolysis and hydropyrolysis experiments at different temperatures, heating rates and pressures have been conducted on a sample of sunflower pressed bagasse to investigate the effect of particle size, sweep gas velocity, ... -
Fixed-bed pyrolysis of cotton stalk for liquid and solid products
Pütün, Ayşe Eren; Özbay Nurgül; Önal, EP; Pütün, Ersan (Elsevier Science BV, 2005)The pyrolysis of cotton stalk was studied for determining the main characteristics and quantities of liquid and solid products. Particular variables investigated were temperature (from 400 degrees C to 700 degrees C), ... -
Humulus lupulus As a Raw Material for Bio-oil Production via Slow Pyrolysis
Apaydın Varol, Esin; Kılıç, Murat; Pütün, Ayşe Eren; Degirmen, Görkem; Pütün, Ersan (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 ... -
Investigating the interactions between lignocellulosic biomass and synthetic polymers during co-pyrolysis by simultaneous thermal and spectroscopic methods
Özsin, Gamzenur; Pütün, Ayşe Eren; Pütün, Ersan (Springer Heidelberg, 2019)The aim of this study was to investigate the effects of synthetic polymers during co-pyrolysis. To this end, a non-edible lignocellulosic biomass, walnut shells, and three synthetic polymers that were obtained from a ... -
Oil production from an arid-land plant: Fixed-bed pyrolysis and hydropyrolysis of Euphorbia rigida
Pütün, Ayşe Eren; Gerçel, Hasan Ferdi; Koçkar, Ömer Mete; Ege, O; Snape, CE; Pütün, Ersan (Butterworth-Heinemann LTD, 1996)Fixed-bed pyrolysis and hydropyrolysis experiments at different temperatures, heating rates and pressures have been conducted on a sample of Euphorbia rigida to investigate the product yields and characteristics. In hydrogen ... -
Optimization of biodiesel production from castor oil using factorial design
Kılıç, Murat; Uzun, Başak Burcu; Pütün, Ersan; Pütün, Ayşe Eren (Elsevier Science BV, 2013)In this study, optimization of biodiesel production from castor oil using full factorial design was investigated. The biodiesel production was carried out in a batch laboratory scale reactor by alkaline-catalyzed ... -
Optimization of Euphorbia rigida fast pyrolysis conditions by using response surface methodology
Kılıç, Murat; Pütün, Ersan; Pütün, Ayşe Eren (Elsevier, 2014)The objective of this study was to optimize the experimental conditions for obtaining the highest bio-oil yield from Euphorbia rigida (E. rigida) by fast pyrolysis using response surface methodology (RSM) based on central ... -
Production of biocrudes from biomass in a fixed-bed tubular reactor: product yields and compositions
Pütün, Ayşe Eren; Özcan, Adnan; Gerçel, Hasan Ferdi; Pütün, Ersan (Elsevier Sci LTD, 2001)Fixed-bed pyrolysis in a tubular reactor were conducted on three biomass samples, Euphorbia rigida, sunflower (Helianthus annuus L.) pressed bagasse and hazelnut (Corylus avellana) shells, to determine the possibility of ... -
Pyrolysis of hazelnut shells in a fixed-bed tubular reactor: yields and structural analysis of bio-oil
Pütün, Ayşe Eren; Özcan, Adnan; Pütün, Ersan (Elsevier Science BV, 1999)Fixed-bed pyrolysis experiments have been conducted on a sample of hazelnut shells to determine the possibility of being a potential source of renewable fuels and chemical feedstocks. The effects of pyrolysis temperature ... -
Rapid pyrolysis of olive residue. 1. Effect of heat and mass transfer limitations on product yields and bio-oil compositions
Uzun, Başak Burcu; Pütün, Ayşe Eren; Pütün, Ersan (American Chemical Society, 2007)In this study, the aim was to obtain high bio-oil yields in a fixed bed tubular reactor at various pyrolysis temperatures, reaction times, sweeping gas velocities, particle sizes, and heating rates. In order to improve ...