Yazar "Pütün, Ayşe Eren" için WoS İndeksli Yayınlar Koleksiyonu listeleme
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Adsorption of heavy metal ions from aqueous solutions by bio-char, a by-product of pyrolysis
Kılıç, Murat; Kırbıyık, Cisem; Cepelioğullar, Özge; Pütün, Ayşe Eren (Elsevier Science BV, 2013)Bio-char, a by-product of almond shell pyrolysis, was used as an alternative adsorbent precursor for the removal of heavy metal ions from aqueous solutions. The adsorption potential of almond shell bio-char for Ni(II) and ... -
Adsorptive removal of phenol from aqueous solutions on activated carbon prepared from tobacco residues: Equilibrium, kinetics and thermodynamics
Kılıç, Murat; Apaydın-Varol, Esin; Pütün, Ayşe Eren (Elsevier Science BV, 2011)This study consists of producing high surface area activated carbon from tobacco residues by chemical activation and its behavior of phenol removal from aqueous solutions. K(2)CO(3) and KOH were used as chemical activation ... -
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 by fast pyrolysis of olive residue: Effect of pyrolysis temperature and heating rate
Uzun, Başak Burcu; Pütün, Ayşe Eren; Pütün, Ersan (Norwegian University Sci Technol, 2005)In this study our aim is to reach high yields of bio-oil in a fixed bed tubular reactor at various pyrolysis temperatures, sweeping gas velocities, and heating rates. In these experiments, to improve heat and mass transfer, ... -
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 ... -
Bio-oil production from rapid pyrolysis of cottonseed cake: product yields and compositions
Özbay Nurgül; Pütün, Ayşe Eren; Pütün, Ersan (Wiley, 2006)Fixed-bed fast pyrolysis experiments have been conducted on a sample of cottonseed cake to determine the effects of pyrolysis temperature, heating rate and sweep gas flow rate on pyrolysis yields and chemical compositions ... -
Bio-oil production via co-pyrolysis of almond shell as biomass and high density polyethylene
Önal, Eylem; Uzun, Başak Burcu; Pütün, Ayşe Eren (Pergamon-Elsevier Science LTD, 2014)Biomass from almond shell (aS) was co-pyrolyzed with high density polyethylene (HDPE) polymer to investigate the synergistic effects on the product yields and compositions. The pyrolysis temperature was selected as 500 C, ... -
Biocrude from biomass: pyrolysis of cottonseed cake
Özbay Nurgül; Pütün, Ayşe Eren; Uzun, Başak Burcu; Pütün, Ersan (Pergamon-Elsevier Science LTD, 2001)Fixed-bed pyrolysis experiments have been conducted on a sample of cottonseed cake to determine the possibility of being a potential source of renewable fuels and chemicals feed-stocks, in two different reactors, namely a ... -
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, ... -
Biomass to bio-oil via fast pyrolysis of cotton straw and stalk
Pütün, Ayşe Eren (Taylor & Francis Inc, 2002)Cotton straw and stalk were thermo-chemically processed by fast pyrolysis under different conditions in a fixed tubular reactor. Fast pyrolysis studies were carried out under sweeping gas atmosphere in two groups. The ... -
Catalytic pyrolysis of biomass in inert and steam atmospheres
Pütün, Ersan; Ateş, Funda; Pütün, Ayşe Eren (Elsevier Sci LTD, 2008)The objective of this study was to investigate thermal conversion of a perennial shrub, Euphorbia rigida biomass sample with catalyst in inert (N-2) and steam atmospheres. Experimental studies were conducted in a well swept ... -
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 ... -
Characterization of Chars from Steam Pyrolysis of Apricot Pulp
Özbay Nurgül; Pütün, Ayşe Eren (Taylor & Francis Inc, 2011)The characterization of apricot pulp char obtained from steam pyrolysis was studied. The char was prepared by pyrolyzing apricot pulp temperatures ranging from 300 to 700 degrees C under steam atmospheres. The chemical ... -
Chemically activated carbon production from agricultural waste of chickpea and its application for heavy metal adsorption: equilibrium, kinetic, and thermodynamic studies
Özsin, Gamzenur; Kılıç, Murat; Apaydın-Varol, Esin; Pütün, Ayşe Eren (Springer Heidelberg, 2019)The purpose of this study was to produce activated carbons (ACs) from chickpea (Cicer arietinum) husks by chemical activation (KOH and K2CO3) and to examine their feasibility in removing heavy metals from aqueous solutions. ... -
Co-pyrolytic behaviors of biomass and polystyrene: Kinetics, thermodynamics and evolved gas analysis
Özsin, Gamzenur; Pütün, Ayşe Eren (Korean Institute Chemical Engineers, 2018)The pyrolytic degradation mechanism of chestnut shell (CNS) and its blend with waste polystyrene (PS) were investigated. Individual pyrolysis behavior of samples obtained separately was compared with those of the blends ... -
Comparative analysis of pyrolysis oils and its subfractions under different atmospheric conditions
Özbay Nurgül; Uzun, Başak Burcu; Varol, Esin Apaydın; Pütün, Ayşe Eren (Elsevier Science BV, 2006)In this paper comparative analysis of bio-oils and their subtraction from static, sweeping gas and steam pyrolysis of apricot pulp, a food industry waste, was investigated. Experimental studies were conducted in a well-swept ... -
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 ... -
A comparative study on co-pyrolysis of lignocellulosic biomass with polyethylene terephthalate, polystyrene, and polyvinyl chloride: Synergistic effects and product characteristics
Özsin, Gamzenur; Pütün, Ayşe Eren (Elsevier Sci LTD, 2018)Co-pyrolysis of waste biomass and plastics was investigated to find out whether the quality of pyrolysis products was improved. For the sake of yield and compositional comparison, three polymers (polyethylene terephthalate, ... -
Comparison between the "slow" and "fast" pyrolysis of tobacco residue
Pütün, Ayşe Eren; önal, Eylem; Uzun, Başak Burcu; Özbay Nurgül (Elsevier Science BV, 2007)In this study, the trends in yields and product compositions of slow pyrolysis and fast pyrolysis were determined and compared with each other. Slow pyrolysis of tobacco residues with particles of between 0.425 and 0.850 ... -
Composition of products obtained via fast pyrolysis of olive-oil residue: Effect of pyrolysis temperature
Uzun, Başak Burcu; Pütün, Ayşe Eren; Pütün, Ersan (Elsevier Science BV, 2007)As an essential thermochemical process, pyrolysis is mainly dependent on temperature. Temperature affects mostly product distribution and composition. In this study, compositional analysis of the products obtained by thermal ...