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Öğe The effect of pH on removal of phosphate from water using aluminum electrodes by electrocoagulation method(TUBITAK, 2021) İrdemez, Şahset; Bingül, Züleyha; Kul, Sinan; Ekmekyapar Torun, Fatma; Demircioğlu, NuhiIn this study, the effect of wastewater pH on phosphate removal by electrocoagulation method using aluminum plate electrodes was investigated. For this purpose, experiments were carried out at initial pH values ranging from 3-10, and the effect of the initial pH of the wastewater on phosphate removal efficiency, energy consumption and reaction rate was analyzed. From the results obtained, it was determined that the initial pHs of the optimum wastewater was 3 and 4. Because at low pH, both phosphate removal efficiency is high and the energy consumption of the system is low. While 97% removal efficiency is reached in 20 minutes at pHi=3, it increases in this period with the increase of the wastewater initial pH. These data show that the removal rate is higher at lower initial pHs. While the 1st degree reaction rate constant at pHi=3 is k1=0.2154 min-1, this value decreases to k1=0.071 min-1 at pHi=10. At pHi=3, the energy consumption of the system has been determined as 0.553 kWh m-3 in 12 minutes of contact time. In addition, in the measurements made during the trials, it was observed that the highest PO4-P removal occurred during the period when the pH of the system was between 5-7. © 2021, TUBITAK. All rights reserved.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 GIS Supported Optımizatıon of Erzurum-Palandöken Solid Waste Collection-Transport System(Ahmet FİDAN, 2021) İrdemez, Şahset; Yıldırım, Muhammet; Kul, Sinan; Torun, Fatma Ekmekyapar; Bingül, ZüleyhaIt is up to local governments to collect, transport and dispose of solid wastes. Since the amount of solid waste generated is increasing day by day, it is important to plan this process well and to ensure the lowest cost. In this study, the current collection / transportation system of domestic solid wastes produced within the borders of Palandöken district of Erzurum city center was examined; The solid waste collection vehicles were accompanied, the container locations were numbered, the collection routes were determined on the satellite map, and a data that could be analyzed was created. In the current system, route optimizations were made and ergonomic solutions were developed. By evaluating the quantities, characterizations and projections of the produced domestic solid wastes, it has been studied on systems with minimum cost for effective, efficient and regular collection and transportation. Thanks to the optimization studies carried out in the domestic solid waste collection and transportation system within the boundaries of the district, savings were achieved in the amount of travel, work force and time spent, and a decrease in annual costs was recorded. It is concluded that 18.56% savings can be made in the annual budget used in the current system.Öğe Investigation of organic and inorganic matters removal from tannery wastewater using iron plate electrode by electrocoagulation process(Taylor and Francis Ltd., 2023) Bingül, Züleyha; İRdemez, Şahset; Kul, Sinan; Ekmekyapar Torun, Fatma; Demircio?lu, NuhiIn this study, COD, turbidity, total nitrogen, phosphate, sulphate, oil-grease and chromium removals from wastewaters taken from a local tannery using the electrocoagulation process were examined and the most suitable parameters for the electrocoagulation system were tried to be determined. Soluble iron plate electrodes were used as electrodes in the experiments. As a result of the studies carried out, the most suitable initial pH in uncontrolled pH was determined as pH = 4 and for controlled pH as pH = 5. In studies, the most suitable current density for iron electrodes was determined as 1.2 mA cm?2. Even if the increase in current density increased the amount of dissolved Fe, it negatively affected the removal efficiency. In addition, the turbidity of the wastewater was removed in 30 minutes, phosphate in 20 minutes and chromium in 15 minutes by 100%. During 60 minutes of operation, while 62.91% of TN, 87.8% of oil-grease were removed, sulphate was removed at the rate of 54.78%. In the studies, 1st and 2nd order kinetic equations for COD removal were examined and it was determined that removal kinetic is more suitable for 2nd order kinetics. © 2021 Informa UK Limited, trading as Taylor & Francis Group.
