Konya Teknik Üniversitesi (original) (raw)

Papers by Mehmet Emin Argun

Asian Journal of Chemistry, 2009

ABSTRACT The enamel plating industry wastewater has a reputation for being a major pollutant. Pla... more ABSTRACT The enamel plating industry wastewater has a reputation for being a major pollutant. Plating has become a major industry and is one of the fastest growing sectors of the world economy. Enamel industry is typically associated with detrimental environmental effects. There was not exactly a study source of enamel cover wastewater and characteristics in Turkey. This study has been made for completing this subject and to solve available problems. To achieve the objectives of the study, the samples taken from metal plating wastewater, were analyzed in the laboratories. Waste-water produced plating unit in enamel have high chemical oxygen demand (394 mg L -1) and suspended solid (486 mg L -1) concentrations. In this study, physico-chemical properties were also evaluated in enamel plating industry wastewater. The optimum polielectrolyte dose with lime addition was determined as 1660 mgL -1 in order to obtain 86 % COD, 94 % TSS removal effiency at pH 9.

Pamukkale University Journal of Engineering Sciences, 2017

Bu çalışmada, ilaç endüstrisi atık suyundan Fenton oksidasyonu kullanılarak Kimyasal Oksijen İhti... more Bu çalışmada, ilaç endüstrisi atık suyundan Fenton oksidasyonu kullanılarak Kimyasal Oksijen İhtiyacı (KOİ) giderimi ile morötesi (UV) ve görünür bölgedeki absorbans değişimleri incelenmiştir. Oksidasyon reaksiyonu için kinetik ve termodinamik veriler hesaplanmıştır. Ayrıca, Fenton için belirlenen optimum dozda Foto-Fenton ve Sono-Fenton prosesleri de çalışılarak karşılaştırma yapılmıştır. İlaç endüstrisi atıksuyundan alınan numunelerin KOİ değerleri 2360-3930 mg/L aralığında bulunmuştur. Oksidasyon reaksiyonları için en uygun şartların sağlandığı optimum değerleri belirlemek için Fe(II) ve H2O2 dozları, reaksiyon süresi ve sıcaklık parametreleri çalışılmıştır. Optimum Fe(II)/H2O2 oranı 1/5 olarak saptanmıştır. Fenton reaksiyonunun ilk 10 dakika içerisinde hızlı bir şekilde gerçekleştiği ve daha sonra yavaşlayarak 60 dakika içerisinde dengeye ulaştığı gözlenmiştir. İletkenlik, Oksidasyon/Redüksiyon Potansiyeli (ORP) ve pH değerleri de izlenmiştir. Maksimum giderim verimleri Fenton için %79, Foto-Fenton için %90 ve Sono-Fenton için %86 olarak elde edilmiştir. Fenton oksidasyonu ile ilaç endüstrisi atıksuyunun arıtılması işleminin yalancı ikinci derece kinetiğe uyduğu belirlenmiştir. Serbest enerji değişimi 283 K, 293 K, 313 K ve 333 K sıcaklıklarında sırası ile-4.6,-3.2,-0.9 ve-0.2 kJ/mol olarak elde edilmiştir. Fenton prosesinin istemli olduğu ve ekzotermik özellik gösterdiği belirlenmiştir. Chemical Oxygen Demand (COD) removal from pharmaceutical industry wastewater by Fenton oxidation and absorbance change of the wastewater in ultraviolet (UV) and visible range were investigated in this study. Kinetic and thermodynamic data were obtained from oxidation reaction. Photo-Fenton and Sono-Fenton oxidations were additionally studied to compare the results with Fenton oxidation. The COD values of raw wastewater were between 2360 mg/L and 3930 mg/L. Ferrous iron and H2O2 dosage, reaction time and temperature were studied to find optimum conditions. According to results, optimum Fe(II)/H2O2 ratio was found as 1/5. Fenton reaction was observed to be fast in the first 10 minute and then reached to the equilibrium in 60 min. Conductivity, Oxidation/Reduction Potential (ORP) and pH values were also measured. Maximum removal efficiencies were obtained as 79% for Fenton, 90% for Photo-Fenton and 86% for Sono-Fenton oxidation. It was concluded that the oxidation reactions followed pseudo-secondorder reaction kinetic. The changes in Gibbs free energy were calculated as-4.6,-3.2,-0.9 and-0.2 kJ/mol for the temperatures of 283 K, 293 K, 313 K and 333 K, respectively. Fenton process was evaluated to be spontaneous and exothermic under natural conditions.

Bioresource Technology, May 1, 2008

This paper describes modification of a natural adsorbent with Fenton reagent and determines the r... more This paper describes modification of a natural adsorbent with Fenton reagent and determines the removal of Cd(II) ions from aqueous solution. Changes of the surface properties of adsorbent materials were determined by the FT-IR analysis after the modification of pine bark. The effect of Fe 2+ /H 2 O 2 ratio, ORP, pH, and contact time were determined. Different adsorption isotherms were also obtained using concentrations of Cd(II) ions ranging from 0.1 to 100 mg L À1. The adsorption process follows pseudo-first-order reaction kinetics and follows the Langmuir adsorption isotherm. The paper discusses thermodynamic parameters, including changes in Gibbs free energy, entropy, and enthalpy, for the adsorption of Cd(II) on modified bark, and revealed that the adsorption process was spontaneous and exothermic under natural conditions. The maximum removal efficiency obtained was 97% at pH 7 and with a 90-min contact time (for 35 mg L À1 initial concentration and a 2.5 g L À1 solid-to-liquid ratio).

Journal of water process engineering, Jul 1, 2023

Environmental progress & sustainable energy, Mar 10, 2011

This study describes the treatment of azo dye Reactive Red 24 (RR 24) and methane production effi... more This study describes the treatment of azo dye Reactive Red 24 (RR 24) and methane production efficiency of anaerobic-aerobic sequential system. An upflow anaerobic sludge blanket and continuously stirred aerobic reactor were used to treat RR 24 dye. The effect of hydraulic retention time (HRT), organic loading rate, and sludge retention time ratio on the methane production percentage, color, and chemical oxygen demand (COD) removal was investigated. The sequential anaerobic-aerobic treatment of synthetic dye wastewater feed with 150 mg/L of RR 24 dye resulted in 100% color and 95.2% COD removal at 5.76-day HRT. The amount of methane produced in anaerobic reactor was 563 mL/day (80% methane in total gas) and 129 mL/day (55%) for organic loading of 2.52 and 23.53 kg COD/(m 3 day), respectively.

Selcuk University Journal of Engineering, Science and Technology, Jun 1, 2019

Bu çalışmada, bir ürün, hizmet veya etkinlik için karbon ayak izinin göstergesi olarak atmosfere ... more Bu çalışmada, bir ürün, hizmet veya etkinlik için karbon ayak izinin göstergesi olarak atmosfere verilen karbondioksit gazının Konya/Selçuklu ilçesi için değerlendirilmesi yapılmıştır. Emisyon hesaplamalarında, Hükümetler Arası İklim Değişikliği Paneli (IPCC) tarafından önerilen ve Tier yaklaşımlarıyla belirlenmiş olan metodoloji kullanılmıştır. Hesaplamalar sonucunda Selçuklu ilçesinin 2015 yılı karbon ayak izi; 0,94 milyon ton CO2 olarak bulunmuştur. Sanayi kaynaklı emisyonlar hesaplamaya dahil edilmemiştir. Selçuklu ilçesinin karbon ayak izini oluşturan emisyonlar içerisinde, %56'lık oranla barınmadan kaynaklı emisyonlar başı çekmektedir. Ardından en büyük katkıyı %41 oranla ulaşım amaçlı enerji kullanımı vermektedir. En düşük emisyon kaynağı %3'lük oranla katı atıklardır. İlçede kişi başına 1,55 ton CO2, birim alan (km2) başına ise 457 ton CO2 emisyonu düşmektedir. Sonuçlar değerlendirildiğinde ilçenin karbon ayak izinin dünya ve Türkiye ortalamasına göre daha düşük olduğu görülmektedir. Ayrıca, ilçede gerçekleştirilen yoğun ağaçlandırma çalışmalarının yaklaşık olarak 612360 ton CO2'in tutulmasını sağladığı ve karbon ayak izinin düşmesine önemli katkı sağladığı ortaya çıkmıştır.

Journal of Environmental Management, Aug 1, 2020

Eight polycyclic aromatic hydrocarbon (PAH) compounds which have been accepted as priority microp... more Eight polycyclic aromatic hydrocarbon (PAH) compounds which have been accepted as priority micropollutants by European Union (EU) were analyzed both in wastewater and sludge lines throughout three full scale (located in city, sub-province and village) WWTPs during 12-month sampling period. Investigated WWTPs have different treatment types including advanced biological treatment, stabilization pond (SP) and constructed wetland (CW). Removal efficiencies for total PAH compounds varied from 48% in CW to 85% in advanced biological treatment plant. The maximum concentrations of 360-2282 ng/L observed for naphthalene in raw wastewater were decreased to 103-370 ng/L by treatment processes. Minimum concentration were detected for benzo(k)fluoranthene (B[k]F) and benzo(g,h,i)perylene (B[g,h,i]P) ranged between 8 and 12 ng/L and 19-33 ng/L, respectively. While minimum removal efficiencies were obtained for B[k]F and B[g,h,i]P maximum removal efficiencies were obtained for naphthalene in all WWTPs. PAHs present in minimum and maximum levels in the sludge samples were detected as 54 and 6826 ng/g for the B[g,h,I]P and naphthalene, respectively. Considering the removal mechanisms, PAHs have been determined to be removed by biodegradation or vaporization up to 84% and by settling (adsorption onto sludge) up to 2%. The greatest portion (99%) of naphthalene and anthracene were determined to be biodegraded or vaporized in biological treatment due to their low molecular weights. On the other hand, mechanism of adsorption onto sludge was determined as negligible for these two compounds. In addition, approximately 14% of PAHs were discharged to the receiving environment. Among the different WWTP types investigated, advanced biological treatment was found to be the most efficient plant for the removal of PAH compounds.

DOAJ (DOAJ: Directory of Open Access Journals), Dec 1, 2017

International Journal of Environmental Pollution and Environmental Modelling, Jan 10, 2019

Arıtma çamurları, su ile birlikte organik ve inorganik kirletici maddeleri içeren konsantre atıkl... more Arıtma çamurları, su ile birlikte organik ve inorganik kirletici maddeleri içeren konsantre atıklardır ve atıksu arıtma tesislerinin ayırma işlemlerinden kaynaklanmaktadır. Çamur susuzlaştırma işlemleri ile ayrılsa da, içeriğinde hala çok miktarda su bulunur. Konya Atıksu Arıtma Tesisi'nde, santrifüj susuzlaştırma ünitesinden çıkan çamur kekinin su içeriği %78 ile %82 arasında değişmektedir. Çamurdaki bu yüksek su içeriği, nihai bertaraf veya faydalı kullanım alternatiflerinin uygulanmasında aşılması gereken bir sorundur. Yakmak, araziye depolamak veya gübre olarak kullanmak için çamurun katı madde içeriğini arttırmak gerekir. Bu nedenle kurutma, bu faydalı kullanım veya bertaraf seçenekleri için yararlı bir işlemdir. Fosil yakıt ile çalışan termal kurutucular yüksek kuruma oranlarına ulaşabilir, ancak maliyeti dezavantajdır. Güneş enerjisinden faydalanmak için çamurun zemine ince bir tabaka halinde serildiği sera tipi kurutma tesisleri, nispeten düşük maliyetlidir ancak büyük alanlar gerektirir. Güneş enerjisinden en yüksek seviyede istifade edilen kurutma seçeneklerinin sayısını artırmak gerekir. Konsantre güneş enerjisi sistemleri bu sorunların üstesinden gelmek için alternatif vaat etmektedir. Parabolik oluk tipi kolektörler, yüksek sıcaklıklarda akışkanın ısıtılması, buhar gücü ile elektrik üretimi gibi endüstriyel uygulamalar için kullanılmaktadır. Bu çalışmada, yoğunlaşmış güneş enerjisi kullanılarak kurutmayı en az alanda yapabilmek amacıyla; parabolik kolektörün odak noktasında bulunan tüpten doğrudan çamur geçirilen bir düzenek kurulmuştur. Çamur metal boru içerisinde ısıtılırken, nem havalandırma yoluyla uzaklaştırılmıştır. Kurutma deneyleri Ekim ve Kasım 2018'de Konya Atıksu Arıtma Tesisi'nde yapılmıştır. Katı madde içeriği, ortalama güneş ışınımının 882 W/m 2 ve çamur besleme hızının 33 g/dk olduğu bir günde %18'den %47'ye yükselmiştir. Radyasyon ve besleme hızının 1047 W/m 2 ve 28,6 g/dk olduğu başka bir günde, katı madde içeriği %21'den %64'e yükselmiştir.

Selcuk University Journal of Engineering, Science and Technology, Jun 1, 2017

Present of micropollutants in aquatic environments has become an alarming environmental problem f... more Present of micropollutants in aquatic environments has become an alarming environmental problem for both living creatures and environment. Micropollutants, also called as emerging contaminants arise from natural substances and increasing variety of anthropogenic events. Micropollutants consist of pharmaceuticals, personal care products, steroid hormones, industrial chemicals, pesticides, polyaromatic hydrocarbons and other recently seen compounds. These emerging contaminants are commonly found in very low concentration in different water bodies ranging from a few ng/l to several μg/l. Many existing Wastewater Treatment Plants (WWTPs) in all over the world are not especially designed for removing micropollutants. Low concentration and diversity of micropollutants complicate the dedection and analysis procedures during the treatment processes. Furthermore, entering micropollutants to the WWTPs continuously and stable structure of many micropollutants make difficult to eliminate these emerging compounds sufficiently. Therefore, many micropollutants of unknown concentration pass to aquatic environment from WWTPs. The occurence of micropollutants with a significant levels in aquatic environments disrupt the aquatic ecosystems with a number of adverse effects including short-term and long-term toxicity such as endocrine disrupting effects. Besides the known negative effects of micropollutants there are great number of micropollutants whose effects on living organisms are still unknown. As a result, removing these compounds is of a great importance both to protect environmental ecosystem and human health. Considering that the conventional methods are insufficient for removing the micropollutants other alternative treatment methods including coagulation-flocculation, activated carbon adsorption (powdered activated carbon and granular activated carbon), advanced oxidation processes (AOPs), membrane processes and membrane bioreactor can be applied for better removal. In this study, alternative treatments methods and removal efficiencies of each treatment methods on different micropollutants were investigated and all alternative treatment methods were compared between each other in terms of micropollutant removal rates.

Water Science and Technology, Aug 28, 2018

In this study, six emerging pollutants, belonging to the polycyclic aromatic hydrocarbons (PAHs) ... more In this study, six emerging pollutants, belonging to the polycyclic aromatic hydrocarbons (PAHs) group, found in landfill leachate were investigated for their removal by sequential treatment processes including chemical precipitation (CP), Fenton oxidation (FO) and ozone oxidation (OO). Each treatment process was run under different conditions using an experimental design program. Optimization of both CP and FO processes was designed based on the measured values of the residual chemical oxygen demand (COD) of the samples analyzed. The analysis of variance test was applied to the obtained results for determination of statistical significance of the model. Removal efficiencies of micropollutants were determined in the optimal conditions both for CP and FO processes. Samples obtained after these processes were treated with different pH and ozonation times for observing the performances of ozonation on micropollutant removal under different operating conditions. In this study, the removal of acenaphthylene, acenaphthene, fluorene, phenanthrene, fluoranthene and pyrene micropollutants was investigated. The values obtained for PAHs in leachate were determined to be above 10 ppb. In the CP process, the removal efficiencies for PAHs were ranged between 6% and 40% except for pyrene. Removal efficiencies of all micropollutants with FO were over 70% except for fluorene (55%). The removal efficiencies of the investigated micropollutants were 80-100% as a result of consecutive treatment processes including CP, FO and OO respectively.

Environmental progress & sustainable energy, Oct 19, 2010

The decolorization and degradation efficiency of the azo dye Reactive Black 5 (RB5) by Fenton sys... more The decolorization and degradation efficiency of the azo dye Reactive Black 5 (RB5) by Fenton system were investigated in this study. The operation parameters such as Fe 21 :H 2 O 2 ratio, pH value, initial concentration of RB5, reaction time, and temperature were examined. Maximum decolorization (99%) and degradation (88% COD removal) efficiencies were achieved at the Fe 21 :H 2 O 2 ratio of 0.05 and pH 3 for 15-min reaction time. The decolorization kinetic of RB5 followed pseudo-second-order reaction kinetic. The increase of temperature caused decreasing of obtained rate constants and increasing of corresponding half-lives. The article also discussed thermodynamic parameters including changes in Gibbs free energy, enthalpy, and entropy for the decolorization of RB5 by Fenton and exposed that the oxidation process was spontaneous and exothermic under natural conditions.

DergiPark (Istanbul University), Jul 1, 2010

This study is a review of solar energy supported desalination processes. Although the sun light c... more This study is a review of solar energy supported desalination processes. Although the sun light captured by earth excessively meets of world's need, we can use a few amount of this source. Solar energy supported desalination is one of the method developed for desalination. Solar energy usage will also decrease CO2 emission which is responsible of global warming. A lot of studies to improve the efficiency of solar energy systems have been carried out during last years. Solar energy can be used both of direct or indirect methods. Direct methods have low efficiency and low cost. Indirect methods include sun collectors which heating water, heat exchanger, evaporation compartments, photo voltaic panels which may used to drive the pumps and valves and may be finally have membrane treatment. Productivity and economic conditions determine which method will choose.

Ekoloji, Feb 2, 2010

The potential of the sequential anaerobic-aerobic system for decolorization of azo dye Reactive B... more The potential of the sequential anaerobic-aerobic system for decolorization of azo dye Reactive Black 5 (RB 5) was investigated in this study. The synthetic wastewater contained 150 mg/L dye and 3000 mg/L glucose-COD. An upflow anaerobic sludge blanket (UASB) reactor and continuously stirred aerobic reactors (CSAR) were used to the remove color and COD. The methane gas production efficiencies were also investigated under the anaerobic conditions. The UASB-CSAR were operated at different organic loading rates (OLR= 2.4-22.5 kg COD/m 3 .day) and hydraulic retention times (HRT= 3.2-30.1 h). The COD removal efficiencies decreased from 61 to 36.7% with increases in organic loadings from 2.4 to 22.5 kg COD/m 3 .day in the anaerobic UASB reactor. The color removals decrease from 99.8 to 90.7% when the HRT decreased from 30.1 to 3.2 hours. The methane production efficiencies obtained were 75 and 38.3% at the organic loading rates of 2.4 and 22.5 kg COD/m 3 .day respectively, in the anaerobic reactor. The effects of both sludge retention times (SRT) and the food to mass (F/M) ratio on the COD removal efficiencies was investigated in the aerobic reactor. COD removal efficiencies of 62.2 and 86.3% were obtained at 2 and 19 days SRT in the aerobic reactor. The COD removal efficiencies were found to be 86.3 and 62.2% at F/M ratios of 0.112 and 1.569 kgCOD/kgMLSS.day. The color and COD removal efficiencies obtained were 99.8% and 95% by using 150 mg/L of RB 5 dye concentration in the sequential anaerobicaerobic reactor.

Journal of Industrial and Engineering Chemistry, May 1, 2012

Bioresource Technology, Dec 1, 2008

This paper describes activation of pine cone with Fenton reagent and determines the removal of Cd... more This paper describes activation of pine cone with Fenton reagent and determines the removal of Cd(II) and Pb(II) ions from aqueous solution. Changes of the surface properties of adsorbent materials were determined by the FT-IR and SEM analysis after activation of pine cone. The effect of Fe 2+ /H 2 O 2 ratio, ORP, pH and contact time were determined. Different adsorption isotherms were also obtained using concentrations of heavy metal ions ranging from 0.1 to 150 mg L À1. The adsorption process follows pseudo-first-order reaction kinetics and follows the Langmuir adsorption isotherm. The study discusses thermodynamic parameters, including changes in Gibbs free energy, entropy, and enthalpy, for the adsorption of Cd(II) and Pb(II) on activated cone, and revealed that the adsorption process was spontaneous and exothermic under natural conditions. The maximum removal efficiencies were obtained as 91% and 89% at pH 7 with 90 and 105-min contact time for Cd(II) and Pb(II), respectively.

Journal of Hazardous Materials, Mar 6, 2007

This article was originally published in a journal published by Elsevier, and the attached copy i... more This article was originally published in a journal published by Elsevier, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues that you know, and providing a copy to your institution's administrator.

DESALINATION AND WATER TREATMENT, 2017

The advanced oxidation of macro-and micro-organic pollutants from the landfill leachate using the... more The advanced oxidation of macro-and micro-organic pollutants from the landfill leachate using the Fenton reaction was investigated. Central composite design with response surface methodology was applied to evaluate the interaction and relationship between operating variables (i.e., pH, reaction time, ferrous iron and H 2 O 2 dosages) and to develop the optimum operating condition. Based on statistical analysis, quadratic models for the two responses (chemical oxygen demand [COD] and aromatic content [UV 254 ]) proved to be significant with very low probability values (<0.001). The obtained optimum conditions were 1,755 mg/L Fe 2+ and 26,422 mg/L H 2 O 2 concentration, pH 3.72 and 99 min reaction time. The results obtained by the predicted model were 70, and 54% removal for COD and UV 254 , respectively, with optimum conditions. The predicted results fitted well with the results of the laboratory experiment. A wide range of analysis was conducted for micropollutants and some volatile organic compounds, pharmaceuticals, pesticides, plasticizers, polycyclic aromatic hydrocarbons and heavy metals were detected. Removal efficiencies of some micropollutants including bis(2-ethylhexyl) phthalate, anthracene, benzene hexachloride, dieldrin, diuron, chlorpyriphos and diclofenac were between 90% and 99% with Fenton oxidation at the optimum condition. It was also determined that heavy metals decreased as a result of co-precipitation after oxidation.

Springer eBooks, 2010

Abstract Clinoptilolite adsorption capacity as a natural matter of the copper (II) ions from arti... more Abstract Clinoptilolite adsorption capacity as a natural matter of the copper (II) ions from artificial polluted water was investigated in this study. In the experimen-tal studies, zeolite mineral which is 25140 mesh size was used by activating with 0.1 M HCl, and copper ion removal ...