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    ASSESSMENT OF ON-CAMPUS NOISE LEVELS AT CUMHURIYET UNIVERSITY
    (Parlar Scientific Publications (P S P), 2018) Ozyonar, Fuat; Gokkus, Omur; Muratcobanoglu, Hamdi; Gursoy, Onder
    Noise is one of the environmental parameters that affect people's life quality negatively. In recent years, noise pollution became an important environmental problem due to mechanization, expansion of motorways, increasing traffic loads and airline transport. When the noise is evaluated on a source basis, it can be said that it is mainly the result of the use of vehicles in traffic. In this study, a series of noise measurements were carried out in order to put forth the traffic-induced noise pollution in Cumhuriyet University campus and the results were assessed comparatively. Noise measurements were made at 9 different locations in the university campus for 5 days at three different time period of the day between May, 9-13 2016. It was observed that the 6th measurement point had higher noise levels than the other measurement points at the evening hours. It was concluded based on present findings that noise generation might differ based on weather conditions, measurement times and vehicle intensity.
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    Optimum process condition determination for the treatment of Disperse Blue 60 dye by electrocoagulation with Taguchi method
    (Desalination Publ, 2020) Ozyonar, Fuat; Muratcobanoglu, Hamdi; Gokkus, Omur
    Wastewater produced in textile processes cannot meet the discharge standards especially in terms of color content and therefore, the treatment demand occurs. In many studies, electrocoagulation has been used in the removal of dyestuff. High removal efficiency, lower space requirement, and easy controllability are the main advantages of the EC process. In this study, removal of Disperse Blue 60 of 100 mg L-1 by electrocoagulation with Taguchi method was investigated. In the reactor, monopolar-parallel connected Al anode and stainless steel cathode were used as electrode materials. The initial pH, current density, and electrocoagulation time were optimized and the effects of these parameters on the dye removal were employed at conductivities values. The operational conditions for EC process according to Taguchi model were employed as conductivity values of 500; 1,000; and 1,500 mu s cm(-1), pH 5, 6, and 7, current density (j) of 40, 80, and 100 mA cm(-2) and electrolysis time (t) of 2.5, 5, and electrolysis time 10 min. The highest removal efficiency (99%) was attained with the conductivity of 500 mu S cm(-1), pH 6, j = 80 mA cm(-2), and t = 10 min. However, only 34% of color were removed with the conductivity value of 500 mu s cm(-1), pH = 5 at j = 40 mA cm(-2) and t = 2.5 min.
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    Taguchi approach for color removal using electrocoagulation with different electrode connection types
    (Parlar Scientific Publications, 2017) Ozyonar, Fuat; Muratcobanoglu, Hamdi; Gokkus, Omur
    In this study, Taguchi experimental design method was applied to determine the optimum operating conditions for treatment of textile wastewater by electrocoagulation (EC) with aluminum-iron electrode pairs. The experimental parameters investigated were electrode connection type; initial pH (pHo): 5-8; conductivity (250-500 ?s/cm); and electrolysis time (5-20 min). These parameters were varied at four levels to see their effects on the removal efficiency. The results show that the electrocoagulation using Fe-Al electrode pairs with different connection modes were able to treat the dye wastewater. The maximum color removal percentage (99.8%) was achieved by the Fe-Al-Fe-Al electrode connection type, pH 6, current density of 75 mA/cm2, conductivity of 750 ?s/cm and 15 min electrolysis time for RO 16. On the other hand, optimum conditions were determined as Fe-Al-Fe-Al electrode connection mode, pH 6, current density of 75 mA/cm2, conductivity of 750 ?s/cm and 20 min electrolysis time for RR 239 and complete decolorization were obtained at these parametric conditions. © 2017 Parlar Scientific Publications. All rights reserved.
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    TAGUCHI APPROACH FOR COLOR REMOVAL USING ELECTROCOAGULATION WITH DIFFERENT ELECTRODE CONNECTION TYPES
    (Parlar Scientific Publications (P S P), 2017) Ozyonar, Fuat; Muratcobanoglu, Hamdi; Gokkus, Omur
    In this study, Taguchi experimental design method was applied to determine the optimum operating conditions for treatment of textile wastewater by electrocoagulation (EC) with aluminum-iron electrode pairs. The experimental parameters investigated were electrode connection type; initial pH (pH.): 5-8; conductivity (250-500 mu s/cm); and electrolysis time (5-20 min). These parameters were varied at four levels to see their effects on the removal efficiency. The results show that the electrocoagulation using Fe-Al electrode pairs with different connection modes were able to treat the dye wastewater. The maximum color removal percentage (99.8%) was achieved by the Fe-Al-Fe-Al electrode connection type, pH 6, current density of 75 mA/cm(2), conductivity of 750 mu s/cm and 15 min electrolysis time for RO 16. On the other hand, optimum conditions were determined as Fe-Al-Fe-Al electrode connection mode, pH 6, current density of 75 mA/cm(2), conductivity of 750 mu s/cm and 20 min electrolysis time for RR 239 and complete decolorization were obtained at these parametric conditions.