Kurşunoğlu, Sait
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Kursunoglu, Sait
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01. Abdullah Gül University
Mühendislik Fakültesi
Malzeme Bilimi ve Nanoteknoloji Mühendisliği
Mühendislik Fakültesi
Malzeme Bilimi ve Nanoteknoloji Mühendisliği
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13
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17
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8
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9
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12
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3
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16
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11
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6
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10
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14
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15
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7
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Scholarly Output
34
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28
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WoS Citation Count
410
Scopus Citation Count
497
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11
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12
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3
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12.06
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14.62
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8
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| Journal | Count |
|---|---|
| Hydrometallurgy | 4 |
| JOM | 4 |
| Minerals, Metals and Materials Series | 3 |
| Scientific Mining Journal | 3 |
| Separation and Purification Technology | 2 |
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Article Citation - WoS: 35Citation - Scopus: 43Selection of an Appropriate Acid Type for the Recovery of Zinc From a Flotation Tailing by the Analytic Hierarchy Process(Elsevier Sci Ltd, 2021) Kursunoglu, Sait; Kursunoglu, Nilufer; Hussaini, Shokrullah; Kaya, MuammerThe selection of acid type for metal dissolution from minerals is an important issue in leaching operations. Acids are used to recover valuable elements from the minerals by dissolving them in a solution. The acid must offer a high recovery at marginal cost and a low environmental effect. Many parameters can affect the acid type selection for high leaching recovery and low environmental effect and thus, the selection of an acid type is complex. In this study, based on the experimental results obtained from the bench-scale laboratory studies, the selection of acid type for the recovery of zinc from a flotation tailing was investigated using the analytic hierarchy process (AHP). The utilization of AHP was supported by the use of ExpertChoice (R) 2000 software. The outcomes demonstrated that sulfuric acid is the most desirable acid type with a ranking of 0.541, tracked by citric acid, and oxalic acid with scoring of 0.282 and 0.177, respectively. Furthermore, analyses of sensitivity were performed to examine the influence of the main criteria on the different acid type. It emerged that citric acid can be used when the environmental main criterion ascended from 7.8% to 75.3%. (C) 2020 Elsevier Ltd. All rights reserved.Article Citation - WoS: 9Citation - Scopus: 10Production of Mn3O4 Nanoparticles From a Manganiferous Iron Ore via Reductive Leaching, Precipitation, and Calcination(Elsevier, 2022) Altiner, Mahmut; Top, Soner; Bouchekrit, Chafia; Kursunoglu, SaitThe synthesis of Mn3O4 nanoparticles from a manganiferous iron ore through reductive leaching, precipitation, and calcination was investigated. The reductive leaching results showed that Mn (99.9%) was almost completely extracted into the leaching solution along with a substantial amount of Mg (99.9%), Al (99.5%), Ca (80%), and Fe (22.9%) under the following conditions: 30 g/L tartaric acid as a reducing agent, 1 M HCl solution, leaching temperature of 90 ?, and leaching duration of 3 h. In the first precipitation step, Fe and Al were expelled from the pregnant leach solution by the addition of NaOH prior to conducting the precipitation experiments for the production of manganese carbonate (MnCO3) particles from the purified solution. In the second precipitation step, MnCO3 particles were produced using sodium carbonate (Na2CO3) as the precipitating agent. The effects of parameters such as reaction temperature, Na2CO3 concentration, and experimental duration were investigated using the Taguchi approach. Manganse(II) was precipitated in the form of MnCO3 particles (97.4%) under the following conditions: a temperature of 30 ?C, Na2CO3 concentration of 0.014 mol/L, and duration of 30 min. The precipitate was observed to have a structure similar to that of rhodochrosite (MnCO3). Thermogravimetric/ differential thermal analyses were subsequently performed in three different atmospheres (air, oxygen, and nitrogen) to select a suitable atmosphere for calcination. The experimental results indicated the formation of hausmannite (Mn3O4) with a purity of 97.5% Mn3O4, 0.42% MgO, 1.66% CaO, and 0.34% FeO. The specific surface area, particle size, Curie temperature, magnetisation, coercivity, and remanence ratio of the final product obtained via 3 h of calcination at 350 C were estimated to be 133.3 m(2)/g, < 142.2 nm, 56 K, 10.10 Am-2/kg, 0.35 T, and 0.19, respectively. The characterisation results revealed the excellent low-temperature ferromagnetic properties of the produced Mn3O4 nanoparticles.Research Project Laterit Liç Çözeltisinden Sinerjik Solvent Ekstraksiyon (SSX) Yöntemi Kullanılarak Nikel ve Kobalt Kazanımı(TUBİTAK, 2019) Kursunoglu, Sait; Kaya, MuammerBu çalışmada, nikel sülfat (NiSO4.6H2O), kobalt sülfat (CoSO4.7H2O), manganez sülfat_x000D_ (MnSO4.H2O), magnezyum sülfat (MgSO4.7H2O) ve kalsiyum klorür (CaCl2.2H2O) tuzları_x000D_ deiyonize su ile çözündürülerek sentetik bir liç çözeltisi hazırlanmıştır. Sentetik çözelti_x000D_ içerisinde seçimli olarak nikel ve kobalt kazanımı için sinerjik solvent ekstraksiyon (SSX) ve_x000D_ direkt solvent ekstraksiyon (DSX) yöntemleri uygulanmıştır. Organik ekstraksiyon çözeltisi_x000D_ olarak Cyanex 272 (bis (2,4,4-trimethylpentyl) phosphonic asit, Versatic 10 (neodecanoic_x000D_ asit) ve DEHPA/D2EHPA (di (2-ethylexyl) fosforik asit) n-Hexan içerisinde seyreltilerek_x000D_ kullanılmıştır. Organik çözelti içerisine ekstraksiyon esnasında oluşabilecek üçüncül fazları_x000D_ ve yerel çökmeleri engellemek için ayarlayıcı olarak TBP (tributyl phosphate) kullanılmıştır._x000D_ Kobalt Cyanex 272 solvent ekstraksiyon ünitesinde yaklaşık pH 5,7’de manganez ile beraber_x000D_ ekstrakte edilmiştir. Yüklü organik çözelti temizleme devresinde asitliği ayarlanmış deiyonize_x000D_ su ile pH 5,5’de üç aşama temizleme işlemi görmüştür. Temizlenmiş yüklü organik 2 kademe_x000D_ 10 g/L Co çözeltisi ile tekrar temizlenmiştir. Temizlenmiş yüklü çözelti pH 0,5’de 2 kademe_x000D_ sıyırma işlemine tabi tutularak kobalt ve manganez yüklü çözelti elde edilmiştir. İkinci solvent_x000D_ ekstraksiyon ünitesinde organik ekstraktant olarak Versatic 10 kullanılmıştır. Cyanex 272_x000D_ ünitesi sonunda kalan atık çözelti ikinci üniteye beslenmiştir. Bu ünitede nikel yaklaşık pH_x000D_ 6,9’da organik faza yüklenmiştir. Yüklü organik pH 6,5’de asitliği ayarlanmış deiyonize su ile_x000D_ 2 kademe temizlenmiş ve ardından 2 kademe 10 g/L Ni çözelti kullanılarak tekrar_x000D_ temizlenmiştir. Temizleme işleminden sonra pH 0,5’de 1 kademe sıyırma işlemi_x000D_ gerçekleştirilerek yüklü nikel çözeltisi elde edilmiştir. Çalışma sonunda, ilk ekstraksiyon_x000D_ kademesinde manganez sentetik liç çözeltisinden tamimiyle uzaklaştırılamamıştır. SSX_x000D_ çalışmalarında %15 Cyanex 272+%5 Versatic 10+%5 TPB, %15 Versatic 10+%5 Cyanex_x000D_ 272+%5 TPB, %15 Cyanex 272+%5 Versatic 10+%5 DEHPA+%5 TBP ve %15 Cyanex_x000D_ 272+%5 DEHPA+%5 TBP sistemleri test edilmiştir. %15 Cyanex 272+%5 Versatic 10+%5_x000D_ TBP sisteminin Ni-Mg-Ca’yı Co’dan ayırmada kullanılabileceği belirlenmiştir. %15 Versatic_x000D_ 10+%5 Cyanex 272+%5 TPB sistemi kullanılarak Ca ve Mg arasında büyük bir seçimlilik_x000D_ olduğu ve bu iki metal iyonunun liç çözeltisinden seçimli olarak ayrılabileceği görülmüştür._x000D_ Aynı zamanda %15 Cyanex 272+%5 Versatic 10+%5 DEHPA+%5 TBP sistemi kullanılarak_x000D_ düşük pH değerlerinde Mn’nin Co’dan uzaklaştırılabileceği belirlenmiştir.Article Leaching of a Complex Zn-Pb Ore in Sulfuric Acid Solution(2024) Gökçen, Hasan Serkan; Altıner, Mahmut; Kaya, Muammer; Top, Soner; Kursunoglu, Sait; Hussaini, Shokrullah; Ozsarac, SafakBu çalışmada Gazipaşa-Aydap kompleks Zn-Pb cevher numunesinin sülfürik asit çözeltisindeki liç davranışı incelenmiştir. Öncelikle cevher örneğinin kimyasal ve mineralojik bileşimleri AAS, ICP-OES, XRF ve XRD analizleri ile belirlenmiştir. Cevherin yapısının çok karmaşık olduğu ve yüksek miktarda çinko (%16.4), kurşun (%10.6), demir (%2.6) ve az miktarda bakır (%0.2) içerdiği görülmüştür. 2 M sülfürik asit konsantrasyonu, 25 °C liç sıcaklığı, 1/10 katı/sıvı oranı ve 125 rpm çalkalama hızı parametrelerinde gerçekleştirilen liç işlemi ile %86.7 Zn, %90 Cu ve %25.2 Fe'nin liç çözeltisine alınabileceği saptanmıştır. Deneysel sonuçlar, liç sıcaklığının arttırılmasının çinko çözünmesi üzerinde yararlı bir etkisinin olmadığını ancak demir çözünmesini önemli ölçüde arttırdığını ortaya koymuştur. Genel olarak çinkonun, kısa bir liç süresi (30 dakika), düşük bir liç sıcaklığı (25 °C), nispeten düşük bir sülfürik asit konsantrasyonu (2 M) ve nispeten yüksek bir katı-sıvı oranı (2/10) kullanılarak kompleks cevherden ekstrakte edilebileceği belirlenmiştir.Article Manganzı Demir Cevherinden Manganın Çözündürülmesinde Farklı İndirgeme Maddelerinin Etkisi(Chamber of Mining Engineers of Turkey, 2022) Top, S.; Altiner, Mahmut; Kursunoglu, SaitIIn this paper, the manganese extraction from a manganiferous iron ore was investigated using reductive leaching. Various chemicals were used as a reducing agent to leach manganese selectively from the ore in the presence of sulfuric acid (H2SO4) solution. Firstly, optimum dissolution values were determined for selective manganese dissolution without using a reducing agent. As it was aimed at the selective extraction of manganese from the ore, the reductive leaching tests were conducted by adding the reducing agents under the following optimal parameters: a leaching time of 1 h, a stirring speed of 300 rpm, a temperature of 70°C, a sulfuric acid concentration of 1 M where the ore was leached with an extraction ratio of 11.54% Mn and 2.16% Fe. Manganese was dissolved with high efficiencies (up to 97.46%) from the ore by using different organic compounds (tartaric acid (C4H6O6), oxalic acid (C2H2O4), citric acid (C6H8O7), glucose (C6H12O6), sucrose (C12H22O11), and maleic acid (C4H4O4)) as the reducing agents. © 2022 Elsevier B.V., All rights reserved.Article Citation - Scopus: 5Extraction of Lanthanum and Cerıum from a Bastnasite Ore By Direct Acidic Leaching(Chamber of Mining Engineers of Turkey, 2020) Kursunoglu, Sait; Top, S.; Hussaini, Shokrullah; Gokcen, H. S.; Altiner, Mahmut; Ozsarac, Safak; Kaya, MuammerThe extraction of lanthanum (La) and cerium (Ce) from a bastnasite ore by direct acidic leaching was investigated. The effects of acid concentration and leaching temperature on the extraction of La and Ce from the ore were tested. Using nitric (NHO3), more than 85% of the La and Ce were simultaneously extracted into leach solution whereas the La and Ce dissolutions were determined as less than 85% by using sulfuric acid (H2SO4). The La dissolution exceeded 90% by using hydrochloric acid (HCl); however, the Ce dissolution remained below 85% under the following conditions: solid-to-liquid ratio of 20% (w/v), the acid concentration of 20%, leaching temperature of 25°C and leaching time of 1 h. The result revealed that HNO3 could be used as a solvent for the maximum simultaneous extraction of the La and Ce from the bastnasite ore. The leaching temperature had no crucial effect on the dissolution of La and Ce when HNO3 or HCl solutions were preferred as a solvating agent. However, the leaching temperature had a slight positive effect on the dissolutions of La and Ce when H2SO4 was used as a solvent. © 2023 Elsevier B.V., All rights reserved.Conference Object Citation - WoS: 13Citation - Scopus: 13Leaching of Turkish Oxidized Pb-Zn Flotation Tailings by Inorganic and Organic Acids(Springer International Publishing AG, 2020) Kaya, Muammer; Kursunoglu, Sait; Hussaini, Shokrullah; Gul, ErkanAn eco-friendly approach and simultaneous recovery of metals from mine tailings is still a significant challenge. This study investigates the extraction of zinc metal from the Kayseri region oxidized lead-zinc (Pb-Zn) flotation tailings by leaching using three different inorganic acids (HNO3, HCl, and H2SO4) and six different organic acids (citric (CA), oxalic (OA), formic (FA), ascorbic (AA), malic (MA), and tartaric (TA) acids). The effects of acid type and concentration, leaching temperature and time, and solid/liquid (S/L) ratio were studied for maximum Zn dissolution and minimum Pb, Fe, and As co-dissolution at lowest temperature and leaching time. For inorganic acids at 1/10 S/L ratio, 1.0MH(2)SO(4) and HCl concentrations achieved 92% Zn + 0% Pb + 12% Fe at 40 degrees C leaching temperature and 60 min leaching time and 92% Zn + 10% Pb + 0% Fe at 80 degrees C leaching temperature and 30 min leaching time, respectively. For organic acids, at 1/10 S/L ratio and 1.0M concentration, 92% Zn + 8.3% Pb with malic acid at 80 degrees C leaching temperature and 180 min leaching time and 91% Zn + 12% Pb with citric acid at 60 degrees C leaching temperature and 180 min leaching time were achieved. 1.0 M formic acid dissolved about 83% Zn + 2.8% Pb at 80 degrees C and 180 min leaching time. More than 90% Zn dissolution can be succeeded by using either inorganic acids at 40 degrees C for 30-60 min leaching time or organic acids at 60-80 degrees C for 180 min leaching time. Oxalic acid significantly dissolved Fe and As without Zn and Pb dissolution.Article Citation - WoS: 5Citation - Scopus: 5Selective Leaching of a Mixed Nickel-Cobalt Hydroxide Precipitate in Sulphuric Acid Solution With Potassium Permanganate as Oxidant(Taylor & Francis inc, 2021) Hussaini, Shokrullah; Ichlas, Zela Tanlega; Top, Soner; Kursunoglu, Sait; Kaya, MuammerSelective leaching of a mixed nickel-cobalt hydroxide precipitate was investigated using potassium permanganate as oxidant in sulfuric acid solution. 94.9% Ni, 50% Co and 0.6% Mn were dissolved under the following conditions: sulfuric acid concentration of 0.75 M, potassium permanganate of 5 g/L, temperature of 30 degrees C, leaching duration of 60 min, solid-to-liquid ratio of 1/10, and stirring speed of 400rpm. The pregnant leach solution was subjected to a solvent extraction process. 98% Co and 99% Mn were extracted at pH 4.84 with 30% (v/v) Cyanex 272, leaving essentially all nickel in the raffinate. Based on the experimental results, a flowsheet is proposed.Article Citation - WoS: 3Citation - Scopus: 3Separation of Mn and Fe From a Manganiferous Iron Ore Using Horse Dung as Reductant: A Zero Waste Approach(Springer, 2022) Top, Soner; Altiner, Mahmut; Kursunoglu, SaitThe separation of manganese and iron from a manganiferous iron ore using horse dung (biomass) as reductant was investigated in a sulfuric acid solution, and 99.80% Mn and 17.76% Fe were extracted into the solution under these leaching conditions: 1 M sulphuric acid concentration, 120 g/L biomass, 1/10 solid to liquid ratio, 300 rev/min stirring speed, 90 degrees C leaching temperature, and 3 h leaching time. In the first precipitation step, the iron and aluminum were first rejected from the solution at pH 5.04. Thereafter, 98.58% Mn was precipitated at pH 10 in the second step. The precipitate was identified as a pyrochroite mineral. After the leaching, the residue was subjected to a carbothermal reduction process conducted at 700 degrees C for 10 min in the presence of no extra reductant. The residue was converted to magnetite mineral, which can be easily recovered by magnetic separation. Based on the experimental results, a flowsheet has been proposed.Article Citation - WoS: 2Citation - Scopus: 3Characterization of Nickel in Chromite Beneficiation Tailings by Mineral Liberation Analysis and Its Recovery by H2SO4 Leaching Followed by Oxalic Acid Precipitation(Springer, 2024) Altiner, Mahmut; Ibrahim, Ahmedaljaali Ibrahim Idrees; Kursunoglu, Sait; Top, Soner; Bayat, OktayThis study investigated the recovery of nickel from tailings (0.2% Ni) obtained in a chromite beneficiation plant using H2SO4 leaching followed by oxalic acid precipitation. The tailings were characterized using mineral liberation analysis. Ni was found as Fe-Ni, Fe-Ni-Co sulfide minerals, which were encapsulated in serpentine, olivine, pyroxene and clinochlore. Liberated fine chromite minerals benefited from magnetic separation followed by Falcon concentrator. A chromite product with a grade > 37% was obtained. The effect of leaching conditions including acid concentration, temperature, time and solid-to-liquid ratio on the leaching behavior of Ni was investigated based on the Taguchi approach. It was possible to extract Ni with a rate of > 98% from the tailings using the following conditions: H2SO4 concentration of 3 M, solid-to-liquid ratio of 1:20 and ambient temperature for 2 h. Finally, Ni was precipitated as an oxalate form with a precipitation rate of 72%. It is believed that implementing additional purification methods like solvent extraction may be essential to obtain a high-purity nickel product from the leach solution of oxalate precipitate. Experimental results indicate that the tailings used in this study are a good alternative as Ni resource in the near future.