Yazar "Özcan, Asiye Safa" için Fen Fakültesi listeleme
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Biosorption potential of Neurospora crassa cells for decolorization of Acid Red 57 (AR57) dye
Akar, Tamer; Demir, Temir A.; Kıran, İsmail; Özcan, Adnan; Özcan, Asiye Safa; Tunalı, Sibel (John Wiley & Sons LTD, 2006)Biosorption of Acid Red 57 (AR57) on to Neurospora crassa was studied with variation of pH, contact time, biosorbent and dye concentrations and temperature to determine equilibrium and kinetic models. The AR57 biosorption ... -
Characterization and lead(II) ions removal of modified Punica granatum L. peels
Ay, Çiğdem Ömeroğlu; Özcan, Asiye Safa; Erdoğan, Yunus; Özcan, Adnan (Taylor & Francis Inc, 2017)The aim of the present study was to enhance the biosorption capacity of a waste biomass of Punica granatum L. peels (PGL) using various chemical modification agents. Among these agents, hexamethylenediamine (HMDA) indicated ... -
Characterization of natural- and organo-bentonite by XRD, SEM, FT-IR and thermal analysis techniques and its adsorption behaviour in aqueous solutions
Ikhtiyarova, G. A.; Özcan, Asiye Safa; Gök, Özer; Özcan, Adnan (Mineralogical Soc, 2012)In this study, natural bentonite was modified with hexadecyltrimethylammonium (HDTMA) bromide to obtain organobentonite (HDTMA-bentonite). Bentonite and HDTMA-bentonite were then characterized using XRD, XRF, SEM, FT-IR, ... -
Characterization of Punica granatum L. peels and quantitatively determination of its biosorption behavior towards lead(II) ions and Acid Blue 40
Ay, Çiğdem Ömeroğlu; Özcan, Asiye Safa; Erdoğan, Yunus; Özcan, Adnan (Elsevier Science BV, 2012)In this study, a waste biomass of Punica granatum L. (P. granatum L.) peels was firstly characterized by means of Brunauer-Emmett-Teller (BET) surface area, elemental analysis, FT-IR, thermogravimetric (TG) analysis and ... -
Comparison of supercritical fluid and Soxhlet extractions for the quantification of hydrocarbons from Euphorbia macroclada
Özcan, Adnan; Özcan, Asiye Safa (Elsevier Science BV, 2004)This study compares conventional Soxhlet extraction and analytical scale supercritical fluid extraction (SFE) for their yields in extracting of hydrocarbons from arid-land plant Euphorbia macroclada. The plant material was ... -
Determination of the equilibrium, kinetic and thermodynamic parameters of adsorption of copper(II) ions onto seeds of Capsicum annuum
Özcan, Adnan; Özcan, Asiye Safa; Tunalı, Sibel; Akar, Tamer; Kıran, İsmail (Elsevier Science BV, 2005)Adsorption of copper ions onto Capsicum annuum (red pepper) seeds was investigated with the variation in the parameters of pH, contact time, adsorbent and copper(II) concentrations and temperature. The nature of the possible ... -
Effects of different parameters on the synthesis of silica aerogel microspheres in supercritical CO2 and their potential use as an adsorbent
Başaran, Ersin; Arıcı, Tuğba Alp; Özcan, Adnan; Gök, Özer; Özcan, Asiye Safa (Springer, 2019)Synthesis of metal oxide microspheres in supercritical carbon dioxide (SCO2) is very attractive for a wide range of applications such as catalysis, controlled release, and separation science due to their identical properties. ... -
Equilibrium and kinetics of biosorption of lead(II) from aqueous solutions by Cephalosporium aphidicola
Tunalı, Sancar; Akar, Tamer; Özcan, Asiye Safa; Kıran, I; Özcan, Adnan (Elsevier Science BV, 2006)Biosorption of lead(II) onto Cephalosporium aphidicola was examined and the effects of pH, contact time, biosorbent and lead(II) concentrations and temperature on biosorption were investigated. The nature of the possible ... -
Evaluation on dye removal capability of didodecyldimethylammonium-bentonite from aqueous solutions
Öncü-Kaya, Elif Mine; Side, Nilgün; Gök, Özer; Özcan, Asiye Safa; Özcan, Adnan (Taylor & Francis Inc, 2017)The removal efficiency of Reactive Blue 19 (RB19) by using surfactant-modified bentonite (MB) from aqueous solutions, and also textile wastewater samples was examined. Natural bentonite (NB) was firstly modified with ... -
Experimental and theoretical investigations of novel synthesized organo-silane compounds and modified mesoporous silica materials
Ermiş, Emel; Demircioğlu, Yasemin Suzen; Özcan, Asiye Safa (Elsevier Science BV, 2019)In this study, the novel compounds (2,5-dimethoxy-methanimine propyltriethoxysilane; S1 and 3-ethoxy-salicylaldimine propyltriethoxysilane; S2) derived from aminopropyltriethoxysilane (APTES) were synthesized by a simple ... -
Immobilization of 2,2 '-dipyridyl onto bentonite and its adsorption behavior of copper(II) ions
Erdem, Bilge; Özcan, Adnan; Gök, Özer; Özcan, Asiye Safa (Elsevier Science BV, 2009)In this study, the immobilization of 2,2'-dipyridyl onto bentonite was firstly carried out and it was then used for the adsorption of copper(II) ions from aqueous solutions. The variation of the parameters of pH, contact ... -
Kinetics and equilibrium studies for the adsorption of Acid Red 57 from aqueous solutions onto calcined-alunite
Tunalı, Sibel; Özcan, Asiye Safa; Özcan, Adnan; Gedikbey, Tevfik (Elsevier Science BV, 2006)The adsorption of Acid Red 57 (AR57) onto calcined-alunite was examined in aqueous solution in a batch system with respect to contact time. pH and temperature. The first-order, pseudo-second-order Kinetic and the intraparticle ... -
Kinetics, isotherm and thermodynamic studies of adsorption of Acid Blue 193 from aqueous solutions onto natural sepiolite
Özcan, Adnan; Öncü Kaya, Elif Mine; Özcan, Asiye Safa (Elsevier Science BV, 2006)In the present study, natural sepiolite was used as an adsorbent for the investigation of the adsorption kinetics, isotherms and thermodynamic parameters of an acid dye (Acid Blue 193, AB 193) from aqueous solution at ... -
Measurement and correlation of solubility of Acid Red 57 in supercritical carbon dioxide by ion-pairing with hexadecyltrimethylammonium bromide
Özcan, Asiye Safa; Özcan, Adnan (Elsevier Science BV, 2006)Solubility of C.I. Acid Red 57 (AR57) in supercritical carbon dioxide was measured by ion-pairing with hexadecyltrimethylammonium (HDTMA) bromide. The solubility measurements of AR57 and AR57-HDTMA in supercritical carbon ... -
Modification of bentonite with a cationic surfactant: An adsorption study of textile dye Reactive Blue 19
Özcan, Adnan; Ömeroğlu, Çiğdem; Erdoğan, Yunus; Özcan, Asiye Safa (Elsevier Science BV, 2007)The utilization of modified bentonite with a cationic surfactant (dodecyltrimethylammonium (DTMA) bromide) as an adsorbent was successfully carried out to remove a synthetic textile dye (Reactive Blue 19 (RB 19)) by ... -
Preparation of HDTMA-bentonite: Characterization studies and its adsorption behavior toward dibenzofuran
Erdem, Bilge; Özcan, Asiye Safa; Özcan, Adnan (Wiley, 2010)Bentonite is one of the most commonly used raw materials in the water treatment processes because of its low cost, easily availability and high mechanical and chemical stability. In this study, natural bentonite was modified ... -
Solubility of an acid dye in supercritical carbon dioxide by ion-pairing with dodecyltrimethylammonium bromide
Özcan, Adnan; Özcan, Asiye Safa (Elsevier Science BV, 2006)In this study, solubility of Acid Red 57 (AR57), which is an anionic dye, in supercritical CO2 was investigated using an ion-pairing with dodecyltrimethylammonium (DTMA) bromide. The measurements of AR57 and AR57-DTMA in ... -
Structural characterization of dodecyltrimethylammonium (DTMA) bromide modified sepiolite and its adsorption isotherm studies
Özcan, Asiye Safa; Gök, Özer (Elsevier Science BV, 2012)In this study, dodecyltrimethylammonium (DTMA) bromide was used to modify natural sepiolite via an ion exchange reaction to form DTMA-sepiolite. Sepiolite and DTMA-sepiolite were then characterized by using Brunauer-Emmett-Teller ... -
Supercritical fluid extraction of Euphorbia rigida
Özcan, Adnan; Özcan, Asiye Safa (Wiley-V C H Verlag GMBH, 2000)… -
Utilization of the Phaseolus vulgaris L. waste biomass for decolorization of the textile dye Acid Red 57: determination of equilibrium, kinetic and thermodynamic parameters
Tunalı, Sibel; Özcan, Adnan; Kaynak, Zerrin; Özcan, Asiye Safa; Akar, Tamer (Taylor & Francis Inc, 2007)In the present study, biosorption of Acid Red 57 (AR57) onto a waste biomass of Phaseolus vulgaris L. was investigated by varying pH, contact time, biosorbent concentration and temperature, to determine the equilibrium, ...