Yazar "Özsin, Gamzenur" için listeleme
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Biosorption Behaviour of an Arid Land Plant, Euphorbia rigida, Towards to Heavy Metals: Equilibrium, Kinetic and Thermodynamic Studies
T he potential of an arid-land plant, Euphorbia rigida (E. rigida), for the removal of heavy metals [Pb(II), Zn(II), Cu(II), Cd(II), Ni(II)] from aqueous solutions was studied in the current work. Batch sorption experiments ... -
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 ... -
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, ... -
Environmental-friendly production of carbon fiber from isotropic hybrid pitches synthesized from waste biomass and polystyrene with ethylene bottom oil
Özsin, Gamzenur; Pütün, Ayşe Eren; Nakabayashi, K.; Miyawaki, J.; Yoon, S. -H. (Elsevier Ltd, 2019)In this study, spinnable isotropic pitches (IPs) were produced by pyrolytic oils of biomass and polystyrene (PS) with ethylene bottom oil (EBO or pyrolysis fuel oil: PFO) through bromination/dehydrobromination reaction. ... -
Evaluation of Field Debris of Chickpea Husk as a Low-Cost Biosorbent for Removal of Methylene Blue From Aqueous Solutions
Kılıç, Murat; Cepelioğullar, Özge; Özsin, Gamzenur; Uzun, Başak Burcu; Pütün, Ayşe Eren (Gazi University, Fac Engineering Architecture, 2014)In the present study, an important agricultural waste, chickpea straw, was evaluated as biosorbent material for the removal of basic dyes from aqueous solutions. Effects of solution pH, biosorbent dosage, initial dye ... -
Farklı organik atıklardan zift esaslı karbon fiber üretimi ve karakterizasyonu
Özsin, Gamzenur (Anadolu Üniversitesi, 2017)Bu çalışmada biyokütle, polimer ve petrol rafinerisi atıkları kullanılarak zift esaslı karbon fiber üretimi araştırılmış olup, yürütülen çalışma üç aşamada gerçekleştirilmiştir. İlk aşamada TGA/MS/FT-IR kullanılarak iki ... -
Insights into pyrolysis and co-pyrolysis of biomass and polystyrene: Thermochemical behaviors, kinetics and evolved gas analysis
Özsin, Gamzenur; Pütün, Ayşe Eren (Pergamon-Elsevier Science LTD, 2017)The purpose of this study was to investigate the effect on polystyrene (PS) during co-pyrolysis with biomass through thermal decomposition. The model-free iso-conversional methods (Kissinger, Friedman, Flynn-WallOzawa, ... -
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 ... -
Kinetics and evolved gas analysis for pyrolysis of food processing wastes using TGA/MS/FT-IR
Özsin, Gamzenur; Pütün, Ayşe Eren (Pergamon-Elsevier Science LTD, 2017)The objective of this study was to identify the pyrolysis of different bio-waste produced by food processing industry in a comprehensible manner. For this purpose, pyrolysis behaviors of chestnut shells (CNS), cherry stones ... -
NOHUT SAMANI TARLA ATIĞININ SULU ÇÖZELTİLERDEN METİLEN MAVİSİ GİDERİMİNDE DÜŞÜK MALİYETLİ BİYOSORBENT OLARAK DEĞERLENDİRİLMESİ
Kılıç, M.; Çepelioğullar, Özge; Özsin, Gamzenur; Uzun, Başak Burcu; Pütün, Ayşe Eren (Gazi Universitesi Muhendislik-Mimarlik, 2014)Yapılan bu çalışmada tarımsal bir atık olan nohut samanı, sulu çözeltilerden boyar madde gideriminde biyosorbent olarak değerlendirilmiştir. Çözelti pH’ı, biyosorbent miktarı, başlangıç boyar madde derişimi, temas süresi ... -
Nohut Samanı Tarla Atığının Sulu Çözeltilerden Metilen Mavisi Gideriminde Düşük Maliyetli Biyosorbent Olarak Değerlendirilmesi
Yapılan bu çalışmada tarımsal bir atık olan nohut samanı, sulu çözeltilerden boyar madde gideriminde biyosorbent olarak değerlendirilmiştir. Çözelti pH'ı, biyosorbent miktarı, başlangıç boyar madde derişimi, temas süresi ... -
Pitch based carbon fiber production
Özsin, Gamzenur; Purun, Ayşe Eren (Gazi University, Fac Engineering Architecture, 2018)Carbon fiber, which has unique physical, chemical and biological properties, is a versatile material in fiber form composed of carbon atoms arranged in hexagonal structure. In the industrial production of carbon fibers, ... -
TGA/MS/FT-IR study for kinetic evaluation and evolved gas analysis of a biomass/PVC co-pyrolysis process
Özsin, Gamzenur; Pütün, Ayşe Eren (Pergamon-Elsevier Science LTD, 2019)This study aims to investigate the thermal behaviours of a specific biomass and a polymer sample through co-pyrolytic degradation. Therefore, a non-edible food processing waste (cherry seed: CS) and a typical plastic waste ...
