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    Color Removal from Synthetic Textile Wastewater by Sono-Fenton Process
    (WILEY, 2011) Ozdemir, Celalettin; Oden, Muhammed Kamil; Sahinkaya, Serkan; Kalipci, Erkan
    In this study, the oxidative decolorization of C.I. reactive yellow 145 (RY 145) from synthetic textile wastewater including RY 145 and polyvinyl alcohol by Fenton and sono-Fenton processes which are the combination of Fenton process with ultrasound has been carried out. The effects of some operating parameters which are the initial pH of the solution, the initial concentration of Fe2+, H2O2, and the dye, temperature, and agitation speed on the color and chemical oxygen demand (COD) removals have been investigated. The optimum conditions have been found as [Fe2+] = 20 mg/L, [H2O2] 20 mg/L, pH 3 for Fenton process and [Fe2+] = 20 mg/L, [H2O2] 15 mg/L, pH 3 for sono-Fenton process by indirectly sonication at 35 kHz ultrasonic frequency and 80W ultrasonic power. The color and COD removal efficiencies have been obtained as 91 and 47% by Fenton process, and 95 and 51% by sono-Fenton processes, respectively. Kinetic studies have been performed for the decolorization of RY 145 under optimum conditions at room temperature. It has been determined that the decolorization has occurred rapidly by sono-Fenton process, compared to Fenton process.
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    Farklı Mantar Türleri Kullanılarak Sentetik Atıksudan Adsorpsiyon Prosesi ile Boya Giderimi
    (Selçuk Üniversitesi, 2019) Oden, Muhammed Kamil; Alkan, Sinan; Kaşık, Gıyasettin
    Mantarlar diğer organizmalardan farklı bir alem olarak ayrılırlar ve çevre, doğa ve insanlar için çok önemlidirler. Bakterilerle birlikte, organik madde döngüsünde ve doğada ayrışmada önemli bir rol oynamaktadırlar. Ayrıca diğer organizmalar tarafından parçalanamayan malzemeleri de ayrıştırırlar. Mantarlar aynı zamanda iyi bir akümülatör oldukları için çevrelerindeki ağır metalleri, iyonları ve boyaları çekebilirler. Bu çalışmada laboratuvarda Metilen mavisi ile hazırlanan renkli sentetik atıksudan kirletici giderimi için makromantarların kullanımı araştırılmıştır. Çalışmada kullanılan mantar türleri; Pleurotus ostreatus (Jacq.) P. Kumm., Fomes fomentarius (L.) Fr., Agaricus bisporus (J.E. Lange) Imbach, Russula delica Fr., Armillaria mellea (Vahl) P. Kumm., Calvatia gigantea (Batsch) Lloyd’dır. Araştırma kapsamında 1000 mg/L stok Metilen mavisi çözeltisinden elde edilen 50 mg/L başlangıç konsantrasyondaki renkli sentetik atıksu kullanılmıştır. Deneysel araştırma sonucunda 500 mg/50 mL adsorban dozunda 90 dakika temas süresinde yaklaşık %80’in üzerinde metilen mavisi boya giderimi elde edilmiştir. Bu araştırma çalışmasında kullanılan P. ostreatus (M1), F. fomentarius (M2), A. bisporus (M3), R. delica (M4), A. mellea (M5), C. gigantea (M6) mantarlarının hepsi renk gideriminde oldukça başarılı olduğu tespit edilmiştir.
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    An Investigation of The Use of Mushrooms in The Research on Environmental Pollution
    (Selçuk Üniversitesi, 2019) Oden, Muhammed Kamil
    Efforts to eliminate environmental pollution are becoming more and more important. Because, with the rapidly increasing world population and technological developments, natural resources are rapidly being destroyed. In this respect, it is widely believed that 100 years later, human beings will find it difficult to find water and nutrients and environmental pollution will reach serious levels. These environmental impurities are known to be of organic, inorganic and biological origin. In terms of toxic effects, heavy metal group is more prominent. These pollutants can interfere with soil, air and water resources and threaten living things. The most important part of the studies in the prevention of environmental pollution is the cost of plant or application investment, additional consumables and chemical needs, operating costs and toxic effects of the outputs (such as a waste sludge) after treatment. Therefore, the use and investigation of the easier and economical application of natural products in environmental studies is gaining importance. In this study, the usability of fungi growing naturally in environmental pollution prevention studies were investigated. In the literature, some studies have been identified that remove pollutants with mushrooms and their process, fungus and optimization criteria were compared. The achievements were shared with the values and what kind of pollutants were removed. In the light of the information presented in this study, it was observed that parameter “Pleurotus mushroom” species were more preferred in these studies and high pollutant parameter removal was obtained.
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    THE REMOVAL OF CHROMIUM FROM AQUEOUS SOLUTIONS USING AN INDUSTRIAL WASTE MATERIAL
    (HEALTH & ENVIRONMENT ASSOC, 2017) Evliyaogullari, Nur Eda; Oden, Muhammed Kamil; Kucukcongar, Sezen
    Heavy metals have toxic effects for aquatic environment and living organisms, therefore the importance for heavy metal removals from aqueous solutions increase recently. Various removal methods of heavy metals from wastewaters were used such as chemical oxidation, adsorption, membrane filtration, UV treatment etc. Adsorption process is a favorable method because of its low cost and efficiency. In this study an industrial waste material produced in boron enrichment process for concentrate colemanite production was used as an adsorbent for chromium removal from aqueous solution. The influence of adsorbent mass, pH, contact time and initial chromium concentration on the adsorption efficiency has been investigated. Maximum chromium removal was obtained as 73% at optimum conditions (adsorbent doze=2.0 g/L; shaking speed=200 rpm; original pH=5.0; contact time=30 minutes and initial chromium concentration=20 mg/L). The adsorption isotherm of waste material was fitted by Freundlich adsorption isotherm and R-2 value of the isotherm was determined as 0.83.
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    Sarayönü İlçe Merkezinde Trafik Kaynaklı Gürültü Kirliliğinin Araştırılması
    (2019) Oden, Muhammed Kamil; Bilgin, İrem
    Bu çalışmada Sarayönü ilçe merkezinin trafik kaynaklı gürültü kirliliği araştırılmıştır. Araştırmakapsamında ilçe merkezinin toplam 44 (kırk dört) adet farklı noktasından gürültü seviyesini belirlemekiçin ölçümler yapılmıştır. Gürültü ölçümleri Tip-2 gürültü ölçüm cihazı ile ilgili standartlar dikkatealınarak gerçekleştirilmiştir. Elde edilen gürültü değerleri ise Leq (dBA) olarak hesaplanmıştır. Çeşitligöstergeler dikkate alınarak hesaplanan yüzde ağırlıklı ses seviyeleri (L 10 , L 90 , L eq ), arka plan gürültüsü(L 90 ) ve tepe değerleri (L 10 ) ile vurgulanmıştır. Meteorolojik parametreler olan sıcaklık, rüzgar hızı venem değerleri de ölçülerek kayıt altına alınmıştır. İlçe merkezinde trafik gürültünün yaşandığı ana caddeüzerinde eşdeğer gürültü ölçüm seviyelerinin sabah 45-103 dBA, öğlen 44-90 dBA ve akşam 39-82 dBAaralığında olduğu belirlenmiştir. Elde edilen ölçüm noktalarındaki ortalama gürültü düzeyleri ÇevreselGürültünün Değerlendirilmesi ve Yönetimi Yönetmeliği (ÇGDYY) ile kıyaslanmıştır. Tüm periyotlarınölçüm ortalamalarına bakıldığında ise 50-70 dBA aralığında olduğu görülmüştür.
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    Treatment of metal plating wastewater using iron electrode by electrocoagulation process: Optimization and process performance
    (INST CHEMICAL ENGINEERS, 2018) Oden, Muhammed Kamil; Sari-Erkan, Hanife
    In this study, electrocoagulation (EC) process was used to remove COD, color and several toxic heavy metals from metal plating wastewater and central composite design (CCD) combined with response surface methodology (RSM) were applied for optimizing the operating parameters of the process, which utilized iron (Fe) electrodes. The interaction effects of the current density, reaction time and initial pH were analyzed and were correlated to assess the removal efficiencies for COD, color, total chromium, nickel and zinc. The ANOVA results revealed that the predicted models for the experimental design were within 95% confidence level, coefficient of determination (R-2) and adjusted R-2 were found to be higher than 96.44% and 90.04% respectively for all responses. Removal efficiencies were determined to be 76.2%, 99.9%, 98.9%, 96.3% and 99.8% for COD, color, total chromium, nickel and zinc, respectively under optimum operating conditions. In terms of electrical energy consumption and electrode consumption, the operational cost of the EC process for the removal of COD at optimum conditions was calculated to be 6.55 (sic)/m(3). The results show that the EC process seems to be an efficient treatment method for the removal of COD and toxic heavy metals from the metal plating wastewater. (C) 2018 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.