Alacabey, İhsan

Alacabey, İhsan

Name Variants

Alacabey, Ihsan

Job Title

Doçent

Email Address

ihsanalacabey@hotmail.com

Main Affiliation

Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü

Sustainable Development Goals Report Points

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Scholarly Output

13

Articles

11

Citation Count

399

Supervised Theses

1 Scholarly Output Search Results

Now showing 1 - 10 of 13

Determination of Hair and Serum Metal Levels in Petrol Station Workers
(2019) Alacabey, İhsan; Alacabey, İhsan; Atasoy, Nurhayat; Üçler, Rıfkı; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
The aim of this study is to determine some metals in hair and serum samples of petrol station workers. A total of 50 petrol station workers (exposure group) and 50 office workers (control group) were included in the study. Li, Ni, V, Tl, Ti and Sr levels in hair samples and Sr, Ti and V levels in serum samples were measured using the ICP-OES instrument. Li, Ni, V, Tl, Ti and Sr levels in hair samples were found to be significantly higher in the exposure group than in the control group. Ti level in serum samples was found to be significantly higher in the exposure group than in the control group. However, Sr and V levels in serum samples did not differ significantly between the two groups. These results show that petrol station workers are exposed to these toxic metals. For this reason, it may be recommended that petrol station workers should undergo regular biomonitoring and healthcare screening.
Citation - WoS: 8
Citation - Scopus: 8
Endosulfan Elimination Using Amine-Modified Magnetic Diatomite as an Adsorbent
(Frontiers in Chemistry, 2022) Alacabey, İhsan; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Pesticides are among the most dangerous developing toxins since they are very hazardous to the environment and threaten human health. In this study, researchers successfully manufactured surface-modified magnetic diatomite (m-DE-APTES) and used them as a sorbent to extract endosulfan from an aqueous solution. There is no other study like it in the scholarly literature, and the results are astounding. Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), electron spin resonance (ESR), and surface area measurements were used to analyze magnetic diatomite particles with surface modification. According to the analysis results, magnetic diatomite has a wide surface area and a porous structure. Furthermore, m-DE-APTES has a higher endosulfan adsorption capacity (97.2 mg g-1) than raw diatomite (DE) (16.6 mg g-1). Adsorption statistics agree with Langmuir adsorption isotherm (R 2 = 0.9905), and the adsorption occurred spontaneously at -2.576 kj mol-1 in terms of ΔGo. Finally, m-DE-APTES are a viable alternative adsorbent for removing pesticides from aqueous solutions.
Citation - WoS: 31
Citation - Scopus: 34
Magnetic diatomite for pesticide removal from aqueous solution via hydrophobic interactions
(Springer Link, 2019) Alacabey, İhsan; Yıldız, Emrecan; Alacabey, İhsan; Karabörk, Muharrem; Uzun, Lokman; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Pesticides are highly hazardous chemicals for the environment and human health and their use in agriculture is constantly increasing. Although 1,1,1-trichloro-2,2-bis(4-chlorophenyl) ethane 4,4′-DDT was banned at developed countries, it is still one of the most dangerous of chemical due to accumulation in the environment. It is known that the toxicity of DDT affects some enzyme systems biochemically. The main motivation of this study is to develop an effective adsorbate for the removal DDT, which was chosen as a model hydrophobic pesticide, out of aqueous systems. For this purpose, the bare diatomite particles were magnetically modified and a hydrophobic ligand attached to enhance its adsorptive and physio-chemical features. Under optimal conditions, a high adsorption capacity, around 120 mg/g with the hydrophobic and magnetic diatomite particles, modification of the diatomite particles reduced average pores diameter whereas surface area and total pore volume increased (around 15-folds). After five consecutive adsorption–desorption cycles, no significant decrease in adsorption capability was observed. The adsorption isotherms (Langmuir, Freundlich, and Flory–Huggins) applied to the data indicated that the adsorption process occurred via monolayer adsorption in an entropy-driven manner. The kinetic data also revealed the quick adsorption process without any diffusion limitations
Preconcentration and Determination of Cu(ii) and Cd(ii) Ions From Wastewaters by Using Hazelnut Shell Biosorbent Immobilized on Amberlite Xad-4 Resin
(2023) Alacabey, İhsan; Erol, Kadir; Teğin, İbrahim; Akdeniz, Selma; Acar, Orhan; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Hazelnut shell biosorbent immobilized on Amberlite XAD-4 polymer resin as solid phase extraction method was developed and used for preconcentration of Cu(II) and Cd(II) ions from aqueous solutions. Concentrations of analytes in solutions were determined by Flame Atomic Absorption Spectrometry after extraction with column technique. Functional groups of nutshell biosorbent immobilized on resin were characterized by Fourier transform infrared spectrometry. Optimized critical parameters for preconcentration of Cu2+ and Cd2+ ions from sample solutions with nutshell immobilized on the resin were the pH value of solution, type of eluent solutions, the flow rate of sample solution, quantities of nutshell biosorbent, Amberlite XAD-4 resin, and enrichment factors, respectively. Detection limits of Cu2+ and Cd2+ ions found were 0.29 μg L-1 and 0.25 μg L-1, respectively. The method proposed was applied for determinations of Cu2+ and Cd2+ ions in standard reference material (BCR-670 aquatic plant sample) for accuracy and applied to real water samples such as wastewater and Van lake water. At the 95% confidence level, relative standard deviations (RSDs) were found as 1.44% for Cd2+ and 1.21% for Cu2+ ions with three replicate measurements.
Citation - WoS: 17
Citation - Scopus: 23
Antibiotic Removal from the Aquatic Environment with Activated Carbon Produced from Pumpkin Seeds
(Molecules, 2022) Alacabey, İhsan; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Antibiotics are among the most critical environmental pollutant drug groups. Adsorption is one of the methods used to eliminate these pollutants. In this study, activated carbon was produced from pumpkin seed shells and subsequently modified with KOH. The adsorbent obtained through this procedure was used to remove ciprofloxacin from aqueous systems. Fourier Transform-Infrared Spectroscopy (FT-IR), Scanning Electron Microscopy (SEM), elemental, X-ray Photoelectron Spectroscopy (XPS), Brunauer–Emmett–Teller (BET) and Zeta analyses were used to characterize the adsorbent. The surface area, in particular, was found to be a very remarkable value of 2730 m2/g. The conditions of the adsorption experiments were optimized based on interaction time, adsorbent amount, pH and temperature. Over 99% success was achieved in removal operations carried out under the most optimal conditions, with an absorption capacity of 884.9 mg·g−1. In addition, the Langmuir isotherm was determined to be the most suitable model for the adsorption interaction
Citation - WoS: 17
Citation - Scopus: 18
Investigation of the effectiveness of waste nut shell–based hydrochars in water treatment: a model study for the adsorption of methylene blue
(SpringerLink, 2022) Demirel, Mehmet Ferit; Alacabey, İhsan; Alacabey, İhsan; Yabalak, Erdal; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Thousands of tons of walnut and pistachio green outer shells emerge as waste sources. Recycling such wastes in environmental applications is of great importance. In this study, the efciency of waste walnut and pistachio shell–based hydrochars in removing methylene blue (MB), which represents hazardous chemicals, from the water was investigated. Outer green pistachio shell–based hydrochar (PH) and outer green walnut shell–based hydrochar (WH) were characterized by FT-IR, SEM, EDX, TG–DTA, and BET analyses. The adsorption of MB was carried out at diferent concentrations and temperatures using WH and PH, and the adsorption parameters of Langmuir and Freundlich were investigated. The R2 values of PH were calculated as 0.9963, 0.9974, and 0.9950 and of WH adsorbent were calculated as 0.9759, 0.9939, and 0.9981 for the MB adsorption at 298 K, 313 K, and 323 K, respectively. The separation factor (RL) values for WH and PH were calculated as 0.1650≥RL≥0.103, 0.1108≥RL≥0.0177, respectively. Both adsorbents ft the Langmuir model. The ΔH° values of the WH and PH adsorbents were found to be 37.0940 and 22.2493, respectively. Positive ΔH° values indicated that the adsorption was endothermic. The negative ΔG° values of both adsorbents indicated a spontaneous adsorption process. It was shown that waste nut shell–based hydrochars can be used efectively in water treatment.
Citation - WoS: 11
Citation - Scopus: 11
Pumice Particle Interface: a Case Study for Immunoglobulin G Purification
(Springer, 2021) Alacabey, İhsan; Acet, Omur; Onal, Burcu; Dikici, Emrah; Karakoc, Veyis; Gurbuz, Fatma; Odabasi, Mehmet; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
Cryogels with embedded natural adsorbent are new trend of chromatographic media for separation of biomolecules. In this report, experimental determination of immunoglobulin G (IgG) purification by Cu2+-attached pumice particles unified cryogel (Cu2+-PPUC) was performed. For this purpose, after preparation of Cu2+-attached pumice particles, they were unified with 2-hydroxyethyl methacrylate monomers to produce Cu2+-PPUC through polymerization of gel-forming precursors at subzero temperatures. IgG separation experiments were accomplished in a continuous column system. The highest binding capacity (596.8 mg/g) was obtained by working with 0.02 M phosphate buffer at pH 6.0. The chemical analysis of pumice was examined by X-ray fluorescence spectrometer. Scanning electron microscopy was performed to identify the morphology of Cu2+-PPUC. Langmuir adsorption model was best fitted to interaction when compared to Freundlich model. Temkin model was utilized to characterize adsorption, energetically. Purification ability of Cu2+-PPUC for IgG was shown with high selectivity via reducing SDS-PAGE electrophoresis.
Citation - Scopus: 0
Reactive Blue 19 Adsorption on Activated Carbon from Pumpkin (Cucurbita Pepo) Seed Waste: Kinetic, Isotherm and Thermodynamic Studies
(Kauno Technologijos Universitetas, 2024) Alacabey, İhsan; Benek, Veysel; Teğin, İbrahim; Önal, Yunus; Erol, Kadir; Alacabey, İhsan; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
In this study, the removal of reactive blue 19 dyestuffs in aqueous systems was investigated by the adsorption method using activated carbon obtained from pumpkin seed waste. Activated carbon obtained from pumpkin seed waste functionalized with ZnCl2 was used as an absorbent. Pumpkin seed hydrochar was characterized by FT-IR, SEM, TGA-DTA, BET, and XPS. In the experimental stages, the adsorption equilibrium time was determined as 45 minutes, the adsorbent dosage was 0.8 g and the optimum pH was 6.0. After this step, the adsorption parameters of Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich isotherms were investigated. It has been pointed out that the adsorption process fits better with the Freundlich isotherm model, and the adhesion occurs in a multilayered manner and on a heterogeneous surface. Freundlich and Dubinin-Radushkevich isotherms support that the bonding mechanism is realized by physical interactions. When the kinetic data were evaluated, adsorption mechanism was found to be compatible with the pseudo-second-order kinetic model. The thermodynamic parameters of adsorption indicate that the system is endothermic, and the adsorption of reactive blue 19 on activated carbon is a spontaneous process.
Citation - WoS: 56
Citation - Scopus: 55
O-carboxymethyl chitosan Schiff base complexes as affinity ligands for immobilized metal-ion affinity chromatography of lysozyme
(ELSEVIER SCIENCE BV, 2018) Alacabey, İhsan; Baran, Talat; Erdönmez, Demet; Aksoy, Neşe Hayat; Alacabey, İhsan; Menteş, Ayfer; Odabaşı, Mehmet; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
We synthesized Ni2+-attached O-Carboxymethyl chitosan Schiff base complexes embedded composite cryogels (Ni2+-O-CMCS-CCs) by means of polymerization of gel-forming precursors at subzero temperatures. Prepared affinity cryogel showed excellent adsorption performance for lysozyme selected as model protein to test adsorption parameters, demonstrating an adsorption capacity of 244.6 mg/g (15.3 mg/g for Ni2+ minus O-CMCS-CCs), with fast adsorption equilibrium within 30 min and good reversibility. The performance of Ni2+-O-CMCS-CCs for lysozyme was also evaluated by SDS-PAGE, and a purification efficiency of 86.9% with 89.5% purification yield was determined. The swelling test, FT-IR, and SEM analysis were carried out for the characterization of Ni2+-O-CMCS-CCs. At the end of 35 adsorption-desorption cycles, there was no significant change in the adsorption capacity. (C) 2018 Elsevier B.V. All rights reserved.
Adsorptive Removal Of Cationic Dye From Aqueous Solutions Using Bardakçı Clay
(2022) Alacabey, İhsan; Department of Medical Services and Techniques / Tıbbi Hizmetler ve Teknikleri Bölümü
This study was investigation employed the batch adsorption method using Bardakçı Clay/Van as an adsorbent to remove crystal violent, a cationic dye from an aqueous solution. The effects of pH, adsorbent amount, interaction time and concentration were investigated to determine the optimal adsorption conditions. The optimal adsorption conditions were determined to be pH=6, 0.6 g adsorbent amount, and the adsorption reached equilibrium at the 25th minute. The equilibrium isotherm was determined using the Langmuir, Freundlich and Dubinin–Radushkevich (D–R) adsorption equations. It was discovered to conform to the Langmuir isotherm. In the Dubinin-Radushkevich (D-R) model, the E value was calculated to E< 8 kJmol-1, indicating that the adsorption process occurs physically. Thermodynamic parameters such as enthalpy (ΔHo), Gibbs' free energy (ΔGo) and entropy (ΔSo) were calculated. The adsorption of crystal violet with Bardakçı clay demonstrated that the process was endothermic, occurring both physically and spontaneously.