Browsing by Author "Salgin, Ugur"
Now showing items 1-19 of 19
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Adsorption of o-, m- and p-nitrophenols onto organically modified bentonites
Koyuncu, Hulya; Yildiz, Nuray; Salgin, Ugur; Koroglu, Fatmanur; Calimli, Ayla (ELSEVIER SCIENCE BV, 2011)Experiments were conducted on the adsorption characteristics of o-, m- and p-nitrophenols by organically modified bentonites at different temperatures. Two organobentonites (HDTMA-B and PEG-B) were synthesized using ... -
Bioconjugation of Magnetic Iron Oxide Nanoparticles and Cross-Linked Enzyme Aggregates: Characterization and Comparison of CLEAs and Magnetic CLEAs
Salgin, Sema; Salgin, Ugur (BENTHAM SCIENCE PUBL LTD, 2017)Background: The separation of enzymes from the bio-product medium constitutes a significant part of total process cost. Therefore, it is of crucial importance that the separation processes for enzymes be specially developed. ... -
Crossflow ultraflitration of binary biomolecule mixture: Analysis of permeate flux, cake resistance and sieving coefficient
Salgin, Ugur; Salgin, Sema (WILEY-V C H VERLAG GMBH, 2007)The aim of this paper is to demonstrate the effects of hydrodynamic conditions on the permeate flux, cake resistance and sieving coefficient in a crossflow ultrafiltration process separating biomolecules of different ... -
Determination of correct zeta potential of polyether sulfone membranes using CLC and AGC: ionic environment effect
Salgin, Sema; Salgin, Ugur; Tuzlali, Nagihan (TAYLOR & FRANCIS INC, 2016)In this study, the correct and apparent zeta potential of polyether sulfone (PES) ultrafiltration membranes at different ionic environments were determined using streaming potential measurements. The apparent zeta potential ... -
Effect of main process parameters on extraction of pine kernel lipid using supercritical green solvents: Solubility models and lipid profiles
Salgin, Ugur; Salgin, Sema (ELSEVIER SCIENCE BV, 2013)Supercritical fluid extraction of pine kernel lipids from Pinus pinea L using green solvents (only CO2 or mixed with ethanol) was performed in a laboratory scale extraction system. For the first time in this study the ... -
Enantiomeric separation of antidepressant drug fluoxetine based on chiral membranes
Salgin, Sema; Salgin, Ugur; Tuzlali, Nagihan (DESALINATION PUBL, 2018)In this study, the enantiomeric separation of antidepressant drug fluoxetine (FLX) was carried out using chiral selector-immobilized polyethersulfone (PES) membranes. For this purpose, the chiral selectors BSA, Candida ... -
The enantioselective hydrolysis of racemic naproxen methyl ester in supercritical CO2 using Candida rugosa lipase
Salgin, Ugur; Salgin, Sema; Takac, Serpil (ELSEVIER SCIENCE BV, 2007)The enantioselective hydrolysis of racemic naproxen methyl ester by Candida rugosa lipase (CRL) was studied in aqueous buffer solution/isooctane reaction system in the presence of supercritical CO2. The effects pressure ... -
Extraction of jojoba seed oil using supercritical CO2+ethanol mixture in green and high-tech separation process
Salgin, Ugur (ELSEVIER SCIENCE BV, 2007)In this study, the extraction of jojoba seed oil obtained from jojoba seed using both supercritical CO2 and supercritical CO2+ethanol mixtures was investigated. The recovery of jojoba seed oil was performed in a green and ... -
Extraction of sesame seed oil using supercritical CO2 and mathematical modeling
Doker, Onur; Salgin, Ugur; Yildiz, Nuray; Aydogmus, Mihrican; Calimli, Ayla (ELSEVIER SCI LTD, 2010)In this work, extraction of sesame oil from sesame seeds using supercritical CO2 was carried out. The effect of operating parameters such as pressure, temperature, and supercritical CO2 flow rate and particle size on ... -
Extraction of sunflower oil with supercritical CO2: Experiments and modeling
Salgin, Ugur; Doker, Onur; Calimli, Ayla (ELSEVIER SCIENCE BV, 2006)Extraction of sunflower oil from sunflower seeds (Heliantus annuus L.) using supercritical CO2 was studied. The shrinking core model was applied to the modeling of the packed-bed extraction process. The experimental data ... -
A green separation process for recovery of healthy oil from pumpkin seed
Salgin, Ugur; Korkmaz, Hasan (ELSEVIER SCIENCE BV, 2011)In this study, pumpkin seeds, called as "Urgup Sivrisi" and grown in Cappadocia region, were used as plant materials because of high aroma contents. In the supercritical fluid extraction of pumpkin seed oil, the effect of ... -
A new application of supercritical CO2 technology for cross linked enzyme aggregates
Dincyurek, Derya; Aptis, Hasan; Salgin, Sema; Salgin, Ugur (ELSEVIER SCIENCE BV, 2012)… -
Oil recovery in rosehip seeds from food plant waste products using supercritical CO2 extraction
Salgin, Ugur; Salgin, Sema; Ekici, Derya Dincyurek; Uludag, Gamze (ELSEVIER SCIENCE BV, 2016)Valuable oils in rosehip seeds produced as the solid waste during the process of marmalade production using seed-containing fruits were recovered by supercritical CO2 extraction method. The influence of the particle size ... -
A parametric study of phenolic compounds desorption performance from organobentonite by supercritical fluids
Salgin, Ugur; Yildiz, Nuray; Koeroglu, Fatmanur; Calimli, Ayla (ELSEVIER SCIENCE BV, 2007)Supercritical fluid desorption has been carried out in a fixed bed column to desorp nitrophenolic compounds from organically modified bentonite. The experiments were carried out in the sequence of synthesis of organobentonite ... -
Streaming Potential Measurements of Polyethersulfone Ultrafiltration Membranes to Determine Salt Effects on Membrane Zeta Potential
Salgin, Sema; Salgin, Ugur; Soyer, Nagihan (ESG, 2013)A systematic study on the zeta potential of polyethersulfone membranes determined by streaming potential measurements was made to examine various salt effects. Chloride salts; KCl, NaCl, CaCl2 and MgCl2 and potassium salts; ... -
Supercritical fluid extraction of walnut kernel oil
Salgin, Sema; Salgin, Ugur (WILEY-V C H VERLAG GMBH, 2006)The objective of this study was to investigate the effects of the main process parameters on supercritical fluid extraction of walnut (Juglans regia L.) kernel oil. The recovery of walnut kernel oil was performed in a green ... -
Synthesis and Characterization of beta-Cyclodextrin Nanosponge and Its Application for the Removal of p-Nitrophenol from Water
Salgin, Sema; Salgin, Ugur; Vatansever, Ozgun (WILEY, 2017)beta-Cyclodextrin (beta-CD)-based nanosponges (NSs) were synthesized by reacting beta-CD with hexamethylenediisocyanate (HMDI) as the cross-linking agent. The effects of the reaction parameters, such as the beta-CD/HMDI ... -
Zeta Potentials and Isoelectric Points of Biomolecules: The Effects of Ion Types and Ionic Strengths
Salgin, Sema; Salgin, Ugur; Bahadir, Seda (ELECTROCHEMICAL SCIENCE GROUP, 2012)A systematic study of the zeta potential and isoelectric point of biomolecules such as BSA, amylase, invertase and phenylalanine has been performed in various salt solutions for 0.001 M and 0.1 M ionic strenght. Chloride ...