Eroğlu, Ahmet Emin
Loading...
Profile URL
Name Variants
Eroğlu, AE
Eroğlu, A. E.
Eroglu, AE
Eroglu, A. E.
Eroglu, Ahmet Emin
Eroglu, Ahmet
Eroglu, Ahmet E.
Eroğlu, Ahmet
Eroğlu, Ahmet E.
Eroğlu, A. E.
Eroglu, AE
Eroglu, A. E.
Eroglu, Ahmet Emin
Eroglu, Ahmet
Eroglu, Ahmet E.
Eroğlu, Ahmet
Eroğlu, Ahmet E.
Job Title
Email Address
ahmeteroglu@iyte.edu.tr
Main Affiliation
04.01. Department of Chemistry
Status
Current Staff
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
3
Research Products
3GOOD HEALTH AND WELL-BEING
2
Research Products
4QUALITY EDUCATION
1
Research Products
5GENDER EQUALITY
0
Research Products
6CLEAN WATER AND SANITATION
22
Research Products
7AFFORDABLE AND CLEAN ENERGY
15
Research Products
8DECENT WORK AND ECONOMIC GROWTH
3
Research Products
9INDUSTRY, INNOVATION AND INFRASTRUCTURE
21
Research Products
10REDUCED INEQUALITIES
0
Research Products
11SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
12RESPONSIBLE CONSUMPTION AND PRODUCTION
16
Research Products
13CLIMATE ACTION
21
Research Products
14LIFE BELOW WATER
7
Research Products
15LIFE ON LAND
1
Research Products
16PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
17PARTNERSHIPS FOR THE GOALS
0
Research Products
Documents
56
Citations
3420
h-index
28
Documents
57
Citations
3025
Scholarly Output
89
Articles
56
Views / Downloads
126002/44848
Supervised MSc Theses
23
Supervised PhD Theses
8
WoS Citation Count
3024
Scopus Citation Count
3167
Patents
0
Projects
15
WoS Citations per Publication
33.98
Scopus Citations per Publication
35.58
Open Access Source
80
Supervised Theses
31
| Journal | Count |
|---|---|
| Talanta | 6 |
| Analytica Chimica Acta | 5 |
| Chemical Engineering Journal | 4 |
| Turkish Journal of Chemistry | 3 |
| Applied Clay Science | 3 |
Current Page: 1 / 7
Scopus Quartile Distribution
Competency Cloud
89 results
Scholarly Output Search Results
Now showing 1 - 10 of 89
Article Citation - WoS: 41Citation - Scopus: 40Biosorption of Cu(ii) and Pb(ii) Ions From Aqueous Solution by Natural Spider Silk(Elsevier Ltd., 2011) Pelit, Levent; Ertaş, Fatma Nil; Eroğlu, Ahmet Emin; Shahwan, Talal; Tural, H.Aside from its excellent mechanical properties, spider silk (SS) would offer an active surface for heavy metal interaction due to its rich protein structure. The present study describes the potential use of natural (SS) as a sorbent of heavy metals from aqueous solutions. Single and multi-species biosorption experiments of heavy metals by natural SS were conducted using batch and column experiments. The biosorption kinetics, in general, was found to follow the second-order rate expression, and the experimental equilibrium biosorption data fitted reasonably well to Freundlich isotherm. From the Freundlich isotherm, the biosorption capacities of Cu(II) and Pb(II) ions onto SS were found as 0.20 and 0.007mmolg -1, respectively. The results showed a decrease in the extent of metal ion uptake with lowering the pH.Master Thesis Development of Novel Sorbents for Speciation of Inorganic and Organik Selenium Prior To Determination by Atomic Spectrometric Techniques(Izmir Institute of Technology, 2011) Demirkurt, Merve; Eroğlu, Ahmet Emin; Eroğlu, Ahmet EminSelenium is an essential trace element forplants, animals and the human body. Hovewer, its possible toxicity at high concentrations necessitates the development of analytical methods for theseparation and determination of the several forms of the element in environmental andbiological systems.In the first part of the study, commercially available and newly synthesized ceria (CeO2) and zirconia (ZrO2) were used for the sorption and speciation of inorganic selenium. Sorption parameterswere investigated for both sorbents for selenite (Se(IV)) and selenate (Se(VI))and the optimized parameters were determined to be 25°C for sorption temperature, 50.0 mg for sorbent amount, 30 min for shaking time for 20.0 mLof 100.0 μgL-1of both species. Therelease of Se(IV) and Se(VI) from the sorbents was realizedusing two eluents, 0.10 M NaOH and 0.10 NH4Cl, respectively. The accuracy of the proposedmethodology was verified with spike recovery tests for various water types spiked with 10.0 μgL-1and 100.0 μgL-1Se(IV) and Se(VI). Spike recovery values were determinedto range between 91% and 97% at 10.0 μgL-1level, and between 97% and 113% at100.0 μgL-1level, for ceria and zirconia, respectively. Moreover, the sorption efficiencies of the newly synthesized sorbentswere compared with those of the commercial sorbents.Ceria and zirconia were shown to be applied in the speciation of inorganic selenium. Sorption studies with nZVI-modified zirconia have demonstrated that the sorbent can be utilized for the speciation of inorganic and organoselenium; namely, Se(IV), Se(VI), Seleno-L-cystine and Seleno-DL-methionine. In the final part of the study, it was shown by column-type equilibration studies that alginate beads modified/immobilized with CeO2 or ZrO2through three different synthesis routes can be used for the sorption and speciation of inorganic selenium.Article Citation - WoS: 31Citation - Scopus: 32Speciation and Preconcentration of Inorganic Tellurium From Waters Using a Mercaptosilica Microcolumn and Determination by Hydride Generation Atomic Absorption Spectrometry(Royal Society of Chemistry, 2000) Körez, Aslıhan; Eroğlu, Ahmet Emin; Volkan, Mürvet; Ataman, O. YavuzA separation–preconcentration method utilising a mercapto-modified silica microcolumn was developed for the determination of trace amounts of Te(IV) and Te(VI) in waters by hydride generation atomic absorption spectrometry. Bottled drinking water, tap water and sea-water samples were spiked with sub-ng ml−1 concentrations of Te(IV) and the spiked solutions were subjected to the mercapto-modified silica microcolumn separation and enrichment procedure. The spike recovery values varied between 86 and 114%. In addition to spike recovery experiments, accuracy was also verified via the analysis of a certified reference material. The limit of detection for Te(IV) in sea-water with a preconcentration factor of 50 was 0.037 ng ml−1. The capability of the microcolumn enrichment scheme for on-line sample processing via flow manifolds was demonstrated. A detailed interference study was performed.Master Thesis Development of Molecularly Imprinted Solid Phase Extraction Method for the Detemination of Vitamin D Derivatives(Izmir Institute of Technology, 2022) Tosun Kurtalan, Hazal; Eroğlu, Ahmet Emin; Eroğlu, Ahmet EminVitamin D, also known as the sunshine vitamin, is both a micronutrient and a prohormone. There are two structurally different forms of vitamin D: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). Both forms can be taken into the body through food or dietary supplements. In addition, ergocalciferol and cholecalciferol can be synthesized non-enzymatically by UVB radiation of sunlight from provitamin forms, which are ergosterol and 7-dehydrocholesterol. In this study, a methodology based on molecularly imprinted solid phase extraction (MISPE) is intended prior to the determination of D2 and D3 by HPLCDAD. In accordance with this purpose, precipitation and sol-gel polymerization methods were used to synthesize molecularly imprinted polymers (MIPs) and nonimprinted polymers (NIPs). Also, different templates, monomers, crosslinkers, and their ratios were tried in the synthesis of MIPs/NIPs by precipitation polymerization. Among all syntheses, MIP, which was synthesized using vitamin D2 as template (T), 4- vinylpyridine (4-VP) as monomer (M), ethylene glycol dimethacrylate (EGDMA) as crosslinker (C) at a molar ratio of 1:6:30 (T:M:C), enabled the co-determination of vitamin D2 and D3. It selectively worked on the vitamin D prohormone group compared to both NIP and commercial solid phase extraction (SPE) sorbents in the presence of other structurally related compounds. The critical experimental parameters of the MISPE method were optimized for the analyte concentration of 1.0 mgL-1 and determined as follows: 8 hours as the sorption time, 5.0 mg as the sorbent amount, 5.0 mL as the sample solution volume, methanol as the eluent, and 24 hours as the desorption time. A matrix-matched calibration curve with optimized parameters was proposed. The applicability of the developed MISPE method was confirmed by analyzing the sample of vitamin D3 supplementation and overall recovery was found as 95.97% (±1.84) for n=2.Master Thesis Preconcentration of Rare Earth Elements (rees) Using Silica Gel Modified With Several Functional Groups(Izmir Institute of Technology, 2007) Ünal, Semira; Eroğlu, Ahmet Emin; Eroğlu, Ahmet EminDetermination of rare earth elements (REEs) in environmental samples can be performed by inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS), in addition to other spectrometric and chromatographic methods. Although these plasma-based techniques offer a good quality data for the determination of REEs, an efficient separation/preconcentration technique prior to instrumental measurements may still be required due to low concentrations and the presence of heavy matrix, in order to achieve accurate and reliable results. In this study, silica gel modified with various organic compound containing S and N functional groups was proposed as adsorbent material for preconcentration of REEs in environmental waters before ICP-MS determination. These organic compounds are (3-aminopropyl)trimethoxysilane (APTMS), (3-mercaptopropyl) trimethoxysilane (MPTMS), 2.aminophenol, 2-aminothiophenol, 2-aminobenzothiazole and L-glutamic acid dimethyl ester. It was shown that REEs can be sorbed by only APTMS and MPTMS modified silica gel quantitatively in a broad pH range (pH>3). At high REEs concentration APTMS modified silica gel (silicaamino) worked better than silica gel. Up to 10.0 mg/L, silica-amino have sorbed higher than 80% of the REEs while silica gel could sorb only 30% of them. Among the sorbents investigated silica-amino was chosen for subsequent experiments. Desorption from APTMS modified silica and silica gel was realised with 1.0 M HNO3. Spike recovery tests were performed in various water types including ultra pure water, sea water, tap water and geothermal water and were found to change between 81-110%.Article Citation - WoS: 78Citation - Scopus: 83Synthesis, Characterization and Application of a Novel Sorbent, Glucamine-Modified Mcm-41, for the Removal/Preconcentration of Boron From Waters(Elsevier Ltd., 2005) Kaftan, Öznur; Açıkel, Müge; Eroğlu, Ahmet Emin; Shahwan, Talal; Artok, Levent; Ni, ChaoyingA novel sorbent was prepared by the functionalization of an inorganic support material, MCM-41, with N-methylglucamine for the uptake of boron from aqueous solutions prior to its determination by inductively coupled plasma optical emission spectrometry (ICP–OES). Characterization of the newly synthesized material was performed using BET, XRD, TEM, SEM and DRIFTS techniques, in addition to its C and N elemental content. Sorption behavior of the novel sorbent for boron was also investigated and found to obey Freundlich and Dubinin–Radushkevich (D–R) isotherm models. The maximum amount of B (as H3BO3) that can be sorbed by the sorbent was calculated from the D–R isotherm and was found to be 0.8 mmol B g−1 of sorbent. The applicability of the new sorbent for the removal/preconcentration of boron from aqueous samples was examined by batch method. It was found that the sorbent can take up 85% of boron in 5 min whereas quantitative sorption is obtained in 30 min. Any pH greater than 6 can be used for sorption. Desorption from the sorbent was carried out using 1.0 M HNO3. The sorption efficiency of the new sorbent was also compared to that of Amberlite IRA 743, a commercial resin with N-methylglucamine functional groups. Within the experimental conditions employed, the new sorbent was found to have higher sorption efficiency than the commercial resin. For method validation, spike recovery tests were performed at various concentration levels in different water types and were found to be between 83–95 and 75–92% for ultra pure water and geothermal water, respectively.Article Citation - WoS: 45Citation - Scopus: 55Incorporation of Iron Nanoparticles Into Clinoptilolite and Its Application for the Removal of Cationic and Anionic Dyes(Korean Society of Industrial Engineering Chemistry, 2015) Nairat, Muath; Shahwan, Talal; Eroğlu, Ahmet Emin; Fuchs, HaraldThis study reports the preparation of composite sorbents of iron nanoparticles (nZVI) and clinoptilolite at various iron/clinoptilolite ratios. The composites were characterized using various characterization techniques. The material was used for the removal of methylene blue (MB) and methyl orange (MO) as model cationic and anionic dyes. The experiments investigated the effects of time, loading, initial pH, reusability, and temperature on the removal process. According to the results, Cl-nZVI showed fast and quantitative removal over a wide range of concentrations. The removal process was endothermic in nature, and the composite demonstrated reusability for several trials.Article Citation - WoS: 28Citation - Scopus: 28Speciation and Preconcentration of Inorganic Antimony in Waters by Duolite Gt-73 Microcolumn and Determination by Segmented Flow Injection-Hydride Generation Atomic Absorption Spectrometry (sfi-Hgaas)(Elsevier Ltd., 2005) Erdem, Aslı; Eroğlu, Ahmet EminA selective matrix removal/separation/enrichment method, utilizing a microcolumn of a chelating resin with SH functional groups (Duolite GT-73), was proposed for the determination of Sb(III) in waters by segmented flow injection-hydride generation atomic absorption spectrometry (SFI-HGAAS). The resin was selective to Sb(III) at almost all pH and acidity values employed, whereas Sb(V) was not retained at all and could be determined after a pre-reduction step with l-cysteine. Spike recoveries were tested at various concentration levels in different water types and were found to vary between 85 and 118%. Accuracy of the proposed methodology was checked by analyzing a standard reference material and a good correlation was found between the determined (13.3 ± 1.1 μg l-1) and the certified value (13.79 ± 0.42 μg l-1). The method was applied to several bottled drinking water samples for antimony determination with and without preconcentration and none of the samples were found to contain antimony above the permissible level (5 μg l-1). The characteristic concentration (the concentration of the analyte corresponding to an absorbance of 0.0044) was 0.55 μg l-1 and the 3 s limit of detection (LOD) based on five times preconcentration was 0.06 μg l-1. The applicability of the microcolumn separation/preconcentration/matrix removal method for flow injection systems was also demonstrated.Master Thesis Biosorption of Aqueus Pb2+, Cd2+, and Ni2+ Ions by Dunaliella Salina, Oocystis Sp., Porphyridium Cruentum, and Scenedesmus Protuberans Prior To Atomic Spectrometric Determination(Izmir Institute of Technology, 2008) Karaca, Meral; Eroğlu, Ahmet EminIn this study, the possibility of using four different algae for the sorption of heavy metals, namely, Pb, Cd, and Ni, from waters was investigated. Dunaliella salina, Oocystis sp., Porphyridium cruentum, and Scenedesmus protuberans were shown to be good candidates for the sorption/removal of the metals from waters prior to atomic spectrometric determination. Characterization of the algae was carried out by scanning electron microscopy, FTIR, elemental analysis, and thermogravimetric analysis.All biomasses behaved similarly in the optimization of sorption parameters.Solution pH of 6.0, sorbent amount of 10.0 mg for 10.0 mL sample volume, shaking time of 60 min, and reaction temperature of 25C were used in the sorption experiments. It was demonstrated that the primary sorption mechanism is the electrostatic attraction between the negatively charged functional groups on the surface of the biomass and the positively (+2) charged metal ions in the solution. Among the biomasses investigated, Dunaliella salina has shown the highest sorption capacity for all the metal ions. It was followed by Oocystis sp., Scenedesmus protuberans and Porphyridium cruentum. Additionally, the biomasses examined have demonstrated the highest affinity towards Pb2+ which was followed by Cd2+ and Ni2+.The competitive biosorption experiments have shown that the uptake of Pb2+ ions was not influenced by the presence of other ions for all the algae studied.However, the general trend for the other biomasses was a decrease in their sorption efficiency towards Cd2+ and Ni2+ ions with the increase in the concentration of the competitive ions.It can be proposed that the algal biomasses investigated in this study can be utilized successfully in the sorption and selective removal of the studied heavy metal ions from waters.Article Citation - WoS: 83Citation - Scopus: 97Characterization of the Uptake of Aqueous Ni2+ Ions on Nanoparticles of Zero-Valent Iron (nzvi)(Elsevier Ltd., 2009) Efecan, Nazlı; Shahwan, Talal; Eroğlu, Ahmet Emin; Lieberwirth, IngoThis study investigates the fixation of aqueous Ni2+ ions by nanoparticles of zero-valent iron (nZVI) prepared using the borohydride reduction method. The uptake of Ni2+ was tested under various experimental conditions like initial concentration, time, pH, and repetitive application of nZVI. Part of the experiments was devoted to comparing the extent of uptake of Ni2+ ions with those of Cu2+, Cd2+, Zn2+, and Sr2+ ions, which belong to a wide range of standard reduction potentials. Particle size analysis of nZVI in aqueous solution indicated that the material suffered extensive aggregation, much above the extent of aggregation known for dry nZVI. Nevertheless, nZVI showed fast uptake kinetics and very high uptake capacity. The overall results demonstrated the high fixation capability of nZVI towards the studied transition metal ions in aqueous solution. The same conclusion is, however, not valid for the removal of Sr2+ ions.