Mustafa Tüzen

Gaziosmanpasa University, Dazimon, Tokat, Turkey

Are you Mustafa Tüzen?

Claim your profile

Publications (15)22.93 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: In this study, the adsorption potential of expanded perlite (EP) and manganese oxides-modified EP (Mn-MEP) for the removal of Sb(III) from aqueous solution were investigated. The influence of solution pH, adsorbent concentration, contact time and temperature on the Sb(III) adsorption were studied using the batch method. Modification of the surface of EP with 0.18 g of manganese oxide per gram EP showed an increase of 1.6-fold in its surface area. The raw EP and Mn-MEP samples with Sb(III) ions were characterized before and after the adsorption process using FT-IR and SEM analysis techniques. The monolayer adsorption capacity of EP and Mn-MEP for Sb(III) was found to be 54.4 and 76.5 mg g–1 at pH 4, respectively. The mean adsorption energy (6.3 kJ mol–1) calculated from the Dubinin–Radushkevich model indicated that the adsorption of Sb(III) onto Mn-MEP was physically carried out. After 10 times of adsorption/desorption cycles, the reusability of Mn-MEP decreased as slightly as 5% for adsorption and 7% for desorption. The calculated thermodynamic parameters (ΔGo, ΔHo, and ΔSo) showed that the adsorption was feasible, spontaneous, and exothermic. The kinetic parameters revealed that the adsorption of Sb(III) onto Mn-MEP followed well the pseudo-second-order kinetic model. In addition, from a practical viewpoint, Mn-MEP is a promising adsorbent for the removal of Sb(III) from aqueous solutions since it has large surface area, high adsorption capacity, easy availability, low-cost, and good reusability performance.
    Industrial & Engineering Chemistry Research. 05/2012; 51(19):6877–6886.
  • Ahmet Sarı, Mustafa Tüzen, Demirhan Cıtak
    [Show abstract] [Hide abstract]
    ABSTRACT: The present research is to investigate the possibility of macrofungus Lycoperdon perlatum biomass, which is easily available, renewable plant, low-cost, as a new biomass for the removal of mercury (Hg(II)) ions from aqueous solutions. The effects of various parameters like pH of solution, biomass concentration, contact time, and temperature were studied by using batch method. The Langmuir model adequately described the equilibrium data. The biosorption capacity of the biomass was found to be 107.4 mg · g at pH 6. The mean free energy value (10.9 kJ · mol) obtained from the D–R model indicated that the biosorption of Hg(II) onto fungal biomass was taken place via chemical ion-exchange. Thermodynamic parameters showed that the biosorption of Hg(II) onto L. perlatum biomass was feasible, spontaneous and exothermic in nature. The kinetic results showed that the biosorption of Hg(II) onto fungal biomass followed second-order kinetics. This work also shows that L. perlatum biomass can be an alternative to the expensive materials like ion exchange resins and activated carbon for the treatment of water and wastewater containing mercury ions due to its ability of selectivity and higher biosorption capacity and also being low cost material.
    Separation Science and Technology - SEPAR SCI TECHNOL. 01/2012;
  • [Show abstract] [Hide abstract]
    ABSTRACT: This study is focused on the investigation of the equilibrium, thermodynamics and kinetics of arsenic(III) biosorption from aqueous solution by dead green algae (Maugeotia genuflexa) biomass. Optimum biosorptin conditions were determined under the optimum pH, biomass concentration, contact time, and temperature. The equilibrium data were applied to the Langmuir, Freundlich and Dubinin–Radushkevich (D–R) isotherm models. From the Langmuir model, the maximum monolayer biosorption capacity of the biosorbent was found to be 57.48mg/g at pH 6, biomass concentration 4g/L, contact time 60min, and temperature 20°C. The calculated mean biosorption energy (10.2kJ/mol) using D–R model indicated that the biosorption process was carried out via chemical ion-exchange. Biosorbent could be regenerated using 0.5M HCI solution, with up to 96% recovery and permitted a slightly decrease about 20% in recovery of As(III) ions after repeated ten times sorption–desorption processes. Thermodynamic parameters showed that the biosorption of As(III) onto algal biomass was feasible, spontaneous and exothermic under studied conditions. Kinetic results indicated that the pseudo-second-order kinetic model was well fitted to the experimental data. The performance of the algal biosorbent was also compared with that of many other reported sorbents for arsenic removal and it was observed that the proposed biosorbent is effective in terms of its high sorption capacity.
    Chemical Engineering Journal - CHEM ENG J. 01/2011; 167(1):155-161.
  • [Show abstract] [Hide abstract]
    ABSTRACT: In the presented study, five different fish species and sediment samples were collected from polluted areas, control samples from unpolluted areas in Yeşilirmak River during 2008-2009. The samples were analyzed using flame and/or graphite furnace atomic absorption spectrometry after various digestion methods. The relative standard deviations (RSD) were found below 10%. The accuracy of the methods was confirmed by certified reference materials. The maximum iron, zinc, copper, lead, manganese, nickel and cadmium concentrations were found to be as 116 (Fe), 63.5 (Zn), 2.5 (Cu), 0.56 (Pb), 9.4 (Mn), 10.2 (Ni) and 0.75 (Cd) microg/g in fish samples. The maximum metal concentration in sediment was 3566 microg/g for Fe, 463 microg/g for Mn, 45.5 microg/g for Zn, 38.7 microg/g for Cu, 17.3 microg/g for Pb, 79.2 microg/g for Ni and 0.55 microg/g for Cd, respectively. Some species is accumulated trace metals at high ratio.
    Food and chemical toxicology: an international journal published for the British Industrial Biological Research Association 03/2010; 48(5):1383-92. · 2.99 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The element contents (Fe, Mn, Zn, Cu, Pb, Co, Cd, Na, K, Ca and Mg) in edible oils (olive oil, hazelnut oil, sunflower oil, margarine, butter and corn oil) from Turkey were determined using atomic absorption spectrometry after microwave digestion. The concentrations of trace element in the samples were found to be 291.0-52.0, 1.64-0.04, 3.08-1.03, 0.71-0.05, 0.03-0.01, 1.30-0.50, 84.0-0.90, 50.1-1.30, 174.2-20.8 and 20.8-0.60 microg/g for iron, manganese, zinc, copper, lead, cobalt, sodium, potassium, calcium, and magnesium, respectively. Cadmium was found to be 4.57-0.09 microg/kg. The high heavy metal and minerals accumulation levels in the samples were found in olive oil for Cu, Pb, Co, margarine for Fe, K, corn oil for Zn, Mn, butter for Na, Mg, sunflower oil for Ca and hazelnut oil for Cd, respectively.
    Journal of hazardous materials 11/2008; 165(1-3):724-8. · 4.14 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: The concentrations of trace metals in seven fish species collected from some lakes in Tokat, Turkey were determined using flame and graphite furnace atomic absorption spectrometry after microwave digestion methods. The average metal concentrations in the seven fish species varied in the following ranges: Fe, 64.3–197; Mn, 11.7–72.9; Zn, 11.9–38.6; Cu, 1.0–4.1; Pb, 0.7–2.4; Cr, 0.6–1.6; Ni, 1.2–3.4; Cd, 0.1–1.2 μg/g.
    Food Chemistry. 01/2005;
  • [Show abstract] [Hide abstract]
    ABSTRACT: The concentrations of Fe, Mn, Zn, Cu, Pb, Cd, Cr, Ni in mushroom species of Turkish origin were determined by atomic absorption spectrometry after microwave digestion. The mushrooms were collected from Ordu, Turkey. The highest Fe level was 628 mg/kg in Mycena inclinata. The highest Mn levels was 103 mg/kg in Coprinus comatus. Zn level was 162 mg/kg in Panellus stipticus. Cu level was 86.2 mg/kg in M. inclinata. Pb level was 11.4 mg/kg in P. stipticus. Cd level was 1.6 mg/kg in Panaeolus campanulatus. Cr level was 4.4 mg/kg in C. comatus and Ni level was 21.6 mg/kg in M. inclinata.
    Food Chemistry. 01/2005; 91(3):463-467.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Trace metal levels in seven different wild-growing mushroom species from Kayseri, Turkey were determined by flame and graphite furnace atomic absorption spectrometry after microwave digestion. The contents of trace metals in the mushroom samples were found in the ranges, 13.4–50.6, 0.14–0.95, 0.75–1.99, 33.5–89.5, 14.2–69.7, 102–1580, 0.34–1.10, 1.72–24.1 and 0.47–1.51 μg/g for Cu, Cd, Pb, Zn, Mn, Fe, Cr, Ni and Co, respectively. Results obtained are in agreement with data reported in the literature.
    Food Chemistry - FOOD CHEM. 01/2005; 92(4):649-652.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Contents of Fe, Cu, Mn, Zn, Pb, and Cd in 10 mushrooms species from Tokat, Turkey were determined by atomic absorption spectrometry. The results indicate that Fe, Cu, Mn, and Pb levels in the species Fomes fementarius were the highest with means of 3904±307 mg/kg, 54±4 mg/kg, 64±5 mg/kg, 2.7±2.0 mg/kg, respectively. The highest level of Zn was 122±11 mg/kg in the species Polyporus frondosus. Content of Cd in Boletus appendiculatus and Fomes fomentarius were the highest with a mean of 1.8±0.2 mg/kg.
    Food Chemistry 02/2004; 84(3):389–392. · 3.33 Impact Factor
  • Mustafa Tüzen
    [Show abstract] [Hide abstract]
    ABSTRACT: Sequential extraction procedure (acid extractable, reducible, oxidizable, and residual) proposed by BCR was applied for the determination of trace metals in the River Yesilirmak sediments, Tokat, Turkey. The determination of trace metals in sediment samples was performed by flame atomic absorption spectrometry. The proposed method showed satisfactory recovery, detection limits and standard deviation for trace metals determination in sediment samples. Generally, most of the elements were found in the oxidizable and residual fractions. The total concentrations of trace metals analyzed were found to be (mg/kg) Cu: 37.9, Mn: 392.2, Zn: 126.2, Fe: 3726, and Pb: 29.6, respectively. Results obtained are in agreement with data reported in the literature.
    Microchemical Journal 01/2003; · 2.88 Impact Factor
  • Source
    Mustafa Tüzen
    [Show abstract] [Hide abstract]
    ABSTRACT: The concentrations of heavy metals in the soil, mushroom and plant samples collected from Tokat, Turkey have been determined by flame and graphite furnace atomic absorption spectrometry after dry ashing, wet ashing and microwave digestion. The study of sample preparation procedures showed that the microwave digestion method was the best. Good accuracy was assured by the analysis of standard reference materials. The relative standard deviations for all measured metal concentrations were lower than 10%. In all cases, quantitative analytical recoveries ranging from 95 to 103% were obtained. Metal accumulation factors were calculated for mushroom and plant samples. High ratio of plants to soil cadmium, zinc and copper concentrations indicate that these elements are accumulated by mushrooms. Results obtained are in agreement with data reported in the literature.
    Microchemical Journal 01/2003; · 2.88 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Six trace metals (Fe, Cu, Mn, Zn, Pb, Cd) were determined in 12 different mushroom samples collected from polluted and unpolluted locations in Tokat, Turkey using flame and graphite furnace atomic absorption spectrometry after dry ashing, wet ashing and microwave digestion. The study of sample preparation procedures showed that the microwave digestion method was the best. The proposed method showed satisfactory recovery, detection limits and standard deviation for trace metals determination in mushroom samples. The results were in the ppm range 184–7560 (Fe), 12–181 (Cu), 16–122 (Mn), 18–403 (Zn), 0.75–7.77 (Pb), and 0.14–5.50 (Cd).
    Analytical Letters - ANAL LETT. 01/2003; 36(7):1401-1410.
  • Mustafa Tüzen
    [Show abstract] [Hide abstract]
    ABSTRACT: The concentrations of heavy metals (Pb, Cd, Fe, Cu, Mn and Zn) in fish samples were determined using graphite furnace atomic absorption spectrometry after dry ashing and wet ashing methods. Different matrix modifiers were used for the stabilization of the analyte. Good accuracy was assured by the analysis of biological reference materials. Recoveries were quantitative for all elements studied (⩾95%). The relative standard deviations were less than 7% for all elements.
    Food Chemistry 01/2003; · 3.33 Impact Factor
  • Mustafa Tüzen
    [Show abstract] [Hide abstract]
    ABSTRACT: The effect of wet ashing, dry ashing and microwave procedure for the determination of heavy metal (Pb, Cd, Fe, Cu, Mn and Zn) levels was investigated in Lichen samples by GFAAS. The study of sample preparation procedures showed that the microwave method was the best. The recovery of heavy metals was very good and precision and accuracy were compatible with standard reference materials. Palladium and aluminum sulfate were used as a modifier.
    ANALYTICAL LETTERS Vol. 35. 01/2002; No. 10(pp. 1667–1676):1667-1676.
  • Ahmet Sarı, Mustafa Tüzen
    [Show abstract] [Hide abstract]
    ABSTRACT: In this work, the manganese oxide-modified vermiculite (Mn-MV) was prepared from raw vermiculite (RV) and characterized chemically and morphologically. The adsorption surface of RV was increased about 10 times after the modification due to the increase in negative charge onto the sorbent surface. The adsorption performance of RV and Mn-MV sorbents in the removal of silver (Ag(I)) ions from aqueous solution was examined using batch method. The effects of initial pH of solution, contact time, adsorbent concentration, initial silver ion concentration, modifying agent concentration and temperature of solution on the adsorption efficiency were investigated systemically. The maximum adsorption capacity of RV and Mn-MV sorbents was found as 46.2 and 69.2 mg g−1, respectively. The calculated adsorption energy (9.6 kJ mol−1) from the Dubinin–Radushkevich (D–R) model indicated that the adsorption process onto modified sorbent was taken place mainly by chemical ion exchange. A 95% portion of the Ag(I) ions adsorbed was desorbed successfully from the sorbent surface by using 0.5 M 10 mL HCl. The Mn-MV sorbent had good reusability performance after 10 adsorption–desorption cycles. The calculated thermodynamic parameters showed that the adsorption of Ag(I) onto Mn-MV sorbent process was feasible, spontaneous and exothermic. The kinetic evaluation also suggested that the adsorption process followed well the pseudo-second-order kinetic model.
    Microporous and Mesoporous Materials 170:155–163. · 3.37 Impact Factor