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Öğe Comparison of kinetics of Cr (III) ions removal from wastewater using raw and activated montmorillonite minerals(Univ Studi Bologna, Dept Agricultural Sciences, 2021) Irdemez, Sahset; Durmus, Gul; Kul, Sinan; Torun, Fatma Ekmekyapar; Bingul, ZuleyhaIn this study, kinetics of the removal of Cr (III) from the waters by adsorption have been investigated using montmorillonite natural clay that was obtained from the vicinity of Narman, Erzurum in Turkey. Activation energy, thermodynamic values and adsorption kinetics were determined. In addition, the trials were repeated by subjecting to the same adsorbent activation process. The values found for these two adsorbents were compared. As a result of the experiments, the parameters affecting the adsorption kinetics were examined. It was determined that the adsorption process could be best depicted by pseudo second order reaction kinetics. Using pseudo second order reaction rate constants, Delta H degrees = -25.791 kJ mol(-1) and Delta S degrees = 106.19 joule mol(-1) were calculated for raw adsorbent. For the activated adsorbent, Delta H degrees = -18,806 kJ mol(-1) and Delta S degrees = 79.37 joule mol(-1) were calculated. That Delta G degrees increases as temperature increases indicates; adsorption is more spontaneous at high temperatures. Negative Delta H degrees values show that the reaction is exothermic. The positive values of Delta S degrees indicate increased randomness at the adsorbent/solution interface during the adsorption of chrome.Öğe DETERMINATION OF PARAMETERS AFFECTING KINETIC AND THERMODYNAMIC VALUES FOR LEAD REMOVAL USING WASTEWATER TREATMENT PLANT SEWAGE SLUDGE ASH(Chem Soc Ethiopia, 2022) Irdemez, Sahset; Yesilyurt, Duygu; Torun, Fatma Ekmekyapar; Kul, SinanIn this study, treatment of lead containing wastewater using sewage sludge ash obtained from the incineration unit in the domestic wastewater treatment plant in Gaziantep province in Turkey was investigated. The main purpose of the study is to determine the potential of using the treatment sludge ash, which comes out as waste in the treatment plant, in the treatment of wastewater of another industry. As a result of this study, the most suitable adsorption conditions were determined and focused on the kinetics of adsorption. In the experiments, the lead adsorption capacity of sewage sludge ash was determined as 122 mg g-1 at 0.5 g L-1 adsorbent concentration in wastewater containing 100 mg L-1 Pb2+under optimum conditions. As a result of the research, it was determined that the adsorption reaction proceeds according to the pseudo second degree reaction and is suitable for the Langmuir isotherm. As thermodynamic constants, & UDelta;H & DEG; = 7.407 kJ mol-1 and & UDelta;S & DEG; = 33.25 J mol-1 were determined. As a result of this, it was determined that the adsorption reaction was endothermic, spontaneous and random, and adsorption was physical adsorption. The results show that sewage sludge ash can be used in the treatment of water containing high concentrations of Pb2+.Öğe The effect of supporting electrolyte type and concentration on the phosphate removal from water by electrocoagulation method using iron electrodes(2022) İrdemez, Şahset; Bingül, Züleyha; Kul, Sinan; Torun, Fatma Ekmekyapar; Demircioğlu, NuhiIn this study, the effect of the type and concentration of the supporting electrolyte given to the water to increase the conductivity in the electrocoagulation process on the phosphate removal from synthetically prepared waters was investigated. In addition, experiments were carried out without electrolyte and the results were compared. The effect of support electrolyte type and concentration on phosphate removal efficiency, energy consumption and reaction rate was analyzed. Experiments have shown that electrolyte use has no significant effect on phosphate removal efficiency. However, it has been found that the addition of electrolyte reduces energy consumption and increases the removal rate. From the results obtained, it was determined that NaCl as the most suitable electrolyte type and 5 mM electrolyte was sufficient as the optimum dose. Under these conditions, for 100 mg L^-1 PO_4-P at 0.5 mA cm^-2 current density, the phosphate removal efficiency was 96.98%, the energy consumption was 1.13 kWh m^-3 and the first order reaction rate constant was 0.0593 min^-1.Öğe The Investigation of COD Treatment and Energy Consumption of Urban Wastewater by a Continuous Electrocoagulation System(Korean Electrochemistry Soc, 2022) Sagsoz, Yesim Dede; Yilmaz, Alper Erdem; Torun, Fatma Ekmekyapar; Kocadagistan, Beyhan; Kul, SinanIn this study, electrochemical treatment of urban wastewater with electrical conductivity of 1000 mu S cm ??? and chemical oxygen demand of 250 mg L ??? was investigated using the variables of initial pH value, current density and flow rate. Electrocoagulation was used, in which aluminum and stainless steel were selected, as the electrochemical treatment process. The electrocoagulation process was operated in continuous mode. The data obtained in experimental studies show that the best COD removal efficiency occurred in experiments where the initial pH value was 6. The increase in current density from 5 A to 15 A decreased the removal efficiency from 79 to 67%. The increase in flow rate under constant current density also reduced the efficiency of removal as expected. In experiments in which current density and flow rate were examined together, the increase in flow rate allowed the application of higher current densities. This situation led to considerable reductions in energy consumption values, even if the COD removal efficiency did not significantly increase. The high COD removal obtained with the use of high flow rate and high current density indicates that the electrocoagulation process can be used for high flow rate municipal wastewater treatment. Received : 1 July 2021, Accepted : 19 December 2021Öğe Investigation of Manganese Ion Removal from Waters Using Sewage Sludge Ash(Jihad Daneshgahi, 2022) Irdemez, Sahset; Yesilyurt, Duygu; Torun, Fatma Ekmekyapar; Kul, Sinan; Bingul, ZuleyhaIn this study, the removal of Mn2+ ions from waters by the adsorption method using ash obtained from a treatment plant sludge burning unit, which is treatment plant waste and mostly disposed of in a landfill, was investigated. By determining the most suitable conditions for adsorption, adsorption kinetics, isotherms, and thermodynamic values were determined. In the experiments, 63.9% removal efficiency was achieved using 10 g/L adsorbent concentration for 10 mg/L Mn+2 under optimum conditions. As a result of the research, it was determined that the adsorption proceeds according to the pseudo-second-degree reaction and abides by the Langmuir isotherm. The thermodynamic constants of Delta H degrees= -4.866 kJ/mol and Delta S degrees= 21.44 J/mol were determined. As a result of this, the reaction was exothermic, spontaneous, and random, and adsorption was physical adsorption. As a result of the study, sewage sludge ash can be used in the treatment of water containing low concentrations of Mn2+ .Öğe Investigation of the Treatment of Olive Mill Wastewater by Electrooxidation(Springer Int Publ Ag, 2022) Kul, Sinan; Boncukcuoglu, Recep; Torun, Fatma Ekmekyapar; Recber, Zuleyha; Sozudogru, Onur; Aladag, ErdincThe electrooxidation process, one of the advanced oxidation processes, is one of the effective treatment processes used in treating various industrial wastewaters. This study investigated the treatment of olive mill wastewater using the electrooxidation process. This study includes the effects of different experimental parameters on chemical oxygen demand and total phenol removal efficiencies in olive mill wastewater. Ti/IrO2/RuO2 mesh plates as anode material and Ti mesh plates as cathode material were used in the study. The effects of stirring rate, dilution factor, pH, type of support electrolyte, the concentration of support electrolyte, and current density on chemical oxygen demand and total phenol removal efficiencies were examined in the experiments using a batch reactor. The study found that the chemical oxygen demand and total phenol removal rates were 96.93% and 100% under optimum conditions, respectively. According to the treatment data obtained, it can be said that olive mill wastewater can be treated by the electrooxidation method and can be proposed as a pretreatment system before entering biological treatment.Öğe Kars İli Sarıkamış İlçesi İçme Suyu Arıtma Tesisi Giriş ve Çıkış Su Kalitesinin Aylara Göre Değişiminin İncelenmesi(2021) İrdemez, Şahset; Özger, Hacer; Torun, Fatma Ekmekyapar; Kul, SinanBu çalışmada Kars ili sınırları içerisinde yer alan Sarıkamış Belediyesi İçme Suyu Arıtma Tesislerinde arıtılansuyun fiziksel ve kimyasal özelliklerine ilişkin tesis giriş ve çıkış değerleri karşılaştırılarak bu değerlerin içmesuyu standartlarına uygunluğunun değerlendirilmesi amaçlanmıştır. Bu amaçla Temmuz 2017-Haziran 2018dönemini kapsayan aylık periyotlarda, tesisin giriş ve çıkış sularından elde edilen numunelerde pH, sıcaklık,elektriksel iletkenlik, renk, alkalinite, nitrit, bulanıklık, demir, organik madde miktarı, sülfat, mangan, amonyumve alüminyum gibi içme suyu parametrelerinin analizleri yapılmıştır. Çalışmada elde edilen veriler TS 266 veİnsani Tüketim Amaçlı Sular Hakkında Yönetmelik ile karşılaştırılmış ve sonuçların sıcaklık parametresi dışındatüm su kalitesi standartlarını sağladığı anlaşılmıştır.Öğe Zeytin Karasuyunun İleri Oksidasyon Prosesleri İle Arıtımının İncelenmesi(2020) Torun, Fatma Ekmekyapar; Cengiz, İbrahim; Kul, SinanBu çalışmada, Balıkesir ilinde faaliyet gösteren bir zeytinyağı üretim tesisinden temin edilen zeytin karasuyunun arıtımında ozon (O3), ozon+hidrojen peroksit (O3+H2O2) ve fenton (Fe2++H2O2) proseslerinin etkinlikleri incelenmiştir. İlk olarak %10 kapasite ile O3 jeneratörü çalıştırılmış ve 3 farklı pH (4.75, 10 ve 11) değerinde 6 saat boyunca ozonlama işlemi gerçekleştirilmiş ve maksimum giderim verimi pH değeri 11 olarak ayarlandığında %15.27 olarak hesaplanmıştır. İkinci olarak %10 kapasite ile O3 jeneratörü çalıştırılmış ve ortama 500 mg L-1 H2O2 ilave edilmiştir. 6 saatlik bu deneme sonrasında giderim verimi %9.8 olarak gerçekleşmiştir. Son olarak zeytin karasuyunun arıtımı için farklı Fe2+ (2.014 g L-1 ve 4.028 g L-1) ve H2O2 (19.05, 44.44 ve 80 g L-1) konsantrasyonlarının etkilerinin incelendiği fenton prosesinde Fe2+ ve H2O2 konsantrasyonları arttığında deney sonunda ortamda kalan KOİ konsantrasyonları sürekli azalmıştır. Fe2+ konsantrasyonu 4.029 mg L-1 ve H2O2 konsantrasyonu 80 mg L-1 olarak ayarlanmış ve %81.94 oranında KOİ giderimi sağlanmıştır. Elde edilen sonuçlar fenton prosesinin, diğer proseslerden çok daha fazla etkinliğinin olduğunu ortaya çıkarmıştır.
