Gül Kaykıoğlu | Namik Kemal University (original) (raw)

Papers by Gül Kaykıoğlu

Springer briefs in molecular science, 2012

Emerging contaminants are chemicals recently discovered in natural streams as a result of human a... more Emerging contaminants are chemicals recently discovered in natural streams as a result of human and industrial activities. Most of them have no regulatory standard and can potentially cause deleterious effects in aquatic life at environmentally relevant concentrations. The conventional wastewater treatment plants (WWTPs) are not always effective for the removal of these huge classes of pollutants and so further water treatments are necessary. This chapter has the aim to study the adsorption process in the removal of emerging compounds. Firstly, a brief description of adsorption mechanism is given and then the study of conventional and non-conventional adsorbents for the removal of emerging compounds is reviewed with the comparison between them.

Doğal afetler ve çevre dergisi, Jan 27, 2023

With the rapid population growth, the amount of waste generated is also increasing. Today, conven... more With the rapid population growth, the amount of waste generated is also increasing. Today, conventional methods used for waste disposal are not suitable for reusing these wastes in a way that will not harm the environment or obtain energy. In recent years, the energy values of wastes that may cause harmful effects on the environment have started to be taken into account and the tendency towards disposal methods that can generate energy are increasing. The Thrace Region is located in an important geographical region for Turkey, where the population is dense, industry, agriculture, and livestock activities are carried out together, and solid waste production with high energy potential is also high. In this study, the biogas potential in the Thrace Region was determined by considering animal wastes, vegetable wastes, sewage sludge, and kitchen wastes. While determining the biogas potential of the Thrace Region, the data of the Turkish Statistical Institute (TUIK) on a yearly basis were used. In this study, it was determined that the total

Sigma Journal of Engineering and Natural Sciences, 2006

In this study, anaerobic treatment of dyes, which are important considerations during the treatme... more In this study, anaerobic treatment of dyes, which are important considerations during the treatment of textile effluents, were determined. Textile effluents have high strength characteristics and have no regulation in the Water Pollution Control Legislation in our country for the color parameter to discharge to receiving bodies. For this reason, textile effluents were generally treated using aerobic treatment and discharged to receiving bodies with high color. However, today, there are some mandatory rules for color removal from industrial wastewater in developed and developing countries. Therefore, studies on color removal were intensively concerned. Anaerobic color removal in reviewed studies was performed using anaerobic or anaerobic/aerobic sequential reactors by anaerobic or facultative microorganisms. It was concluded from previous studies that color removal from textile effluents was successful using anaerobic-aerobic systems in which anaerobic step achieves effective color removal and aerobic step provides additional COD removal. From our reviews, we believe that if anaerobic treatment unit is installed before the activated sludge systems, which were constructed and in operating condition, receiving bodies can be improved to better status.

Trakya Üniversitesi Fen Bilimleri Dergisi, Aug 5, 2016

... sulama ve endüstriyel faaliyetler amacıyla kullanılan yeraltı su kaynaklarının, kalitesinin k... more ... sulama ve endüstriyel faaliyetler amacıyla kullanılan yeraltı su kaynaklarının, kalitesinin korun-ması da oldukça önemli bir konudur (Aslan ve Akkaya ... Bu suların kolay erişilebilir bir ısıda buhara dönüşmesi ve buna bağlı üretilen enerjinin en iyi ve-rimle iletilmesi nedeniyle ideal ...

DergiPark (Istanbul University), Dec 30, 2021

Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevrese... more Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevresel tehlikelere sebep olabileceği bilinen atıksuyun, ülkemizde uygulanan yaygın bir arıtma metodu bulunmamaktadır. Zeytin karasuyu olarak adlandıran bu atıksu yüksek miktarda organik madde, yağ-gres ve fenolik maddeler içermektedir. Yoğun kirlilik yüküne sahip olan atıksuyun alıcı ortamlara ya da kanala deşarj edilebilecek kadar arıtılması tek kademeli arıtma yöntemleriyle mümkün olamamaktadır. Bu çalışmada zeytin karasuyunun arıtımında iki farklı ön arıtma (asitle parçalama ve kireçle çöktürme) uygulanmış ve elde edilen giderme verimleri değerlendirilmiştir. Ön arıtma çalışmaları sonucunda kireç ile çöktürme (pH 12,5) uygulamasının, asit kullanılarak (pH'ın 2'nin altına düşürülmesi) yapılan parçalama işleminden daha başarılı olduğu tespit edilmiştir. Kireç ile ön çöktürme yöntemi uygulandığında KOİ, yağ-gres, TOK ve fenolik maddelerin giderim verimleri sırasıyla %52, %99,7, %42 ve %13 olarak ve asit ile parçalanma yöntemi uygulandığında ise %43, %89, %30, %0,3 olarak tespit edilmiştir. Sonuç olarak zeytin karasuyuna kireçle çöktürme ön arıtma işleminin ardından uygulanacak olan nihai arıtma yöntemlerinin daha başarılı giderme verimleri elde edilmesine sebep olabileceği belirlenmiştir.

DESALINATION AND WATER TREATMENT, 2018

In this study, anaerobic treatment of dyes, which are important considerations during the treatme... more In this study, anaerobic treatment of dyes, which are important considerations during the treatment of textile effluents, were determined. Textile effluents have high strength characteristics and have no regulation in the Water Pollution Control Legislation in our country for the color parameter to discharge to receiving bodies. For this reason, textile effluents were generally treated using aerobic treatment and discharged to receiving bodies with high color. However, today, there are some mandatory rules for color removal from industrial wastewater in developed and developing countries. Therefore, studies on color removal were intensively concerned. Anaerobic color removal in reviewed studies was performed using anaerobic or anaerobic/aerobic sequential reactors by anaerobic or facultative microorganisms. It was concluded from previous studies that color removal from textile effluents was successful using anaerobic-aerobic systems in which anaerobic step achieves effective color removal and aerobic step provides additional COD removal. From our reviews, we believe that if anaerobic treatment unit is installed before the activated sludge systems, which were constructed and in operating condition, receiving bodies can be improved to better status.

Environment, Development and Sustainability, Apr 2, 2019

In this study, the levels of polycyclic aromatic hydrocarbons (PAHs) were determined in various c... more In this study, the levels of polycyclic aromatic hydrocarbons (PAHs) were determined in various components in the Meric-Ergene River Basin which is one of Turkey’s intensive industrialization centers and which accordingly has faced significant environmental pollution and has about 1300 industrial plants within its boundaries. In the river basin, 16 USEPA PAHs were measured in a total of 192 samples consisting of soil, lichen, pine needle and total deposition samples for 1 year to represent the four seasons at a total of 12 points in 4 different regions which were determined as intensive industrial area, industrial + residential area, agricultural area and background. According to the results obtained, the total PAH values, in all sampling points, varied between 69.6 and 1277.7 ng/g (dry wt) for soil, lichen and pine needle samples and between 0 and 937.8 ng/m 2 -day for the total deposition samples. The highest values were determined in the fall season for the lichen samples and ind...

Journal of Nanomaterials, 2016

The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (R... more The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20, 40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

Environmental Engineering and Management Journal, 2022

In this study, the treatment of olive mill wastewater (OMW), which is physicochemically pre-treat... more In this study, the treatment of olive mill wastewater (OMW), which is physicochemically pre-treated by acid cracking (AC) and lime precipitation (LP), was evaluated by a combination of Fenton oxidation, ultraviolet (UV), and ultrasound (US) processes. The results obtained were evaluated in terms of the removal efficiencies of chemical oxygen demand (COD), total organic carbon (TOC), oil-grease, and UV254 parameters. The COD removal efficiencies of precipitated OMW (p-OMW) after AC+Fenton+UV, LP+Fenton+UV, AC+Fenton+US, and LP+Fenton+US processes were found as 70, 78, 77, and 90%, respectively. Aromatic compounds which are formed as a result of phenol oxidation are not significantly affected by UV application while they were partially affected by US application. In the experimental studies of UV and US, compliance with pseudo-first-order reaction kinetics was determined. In the experimental studies of AC+Fenton+UV, LP+Fenton+UV, AC+Fenton+US, and LP+Fenton+US, compliance with the pseudo-first-order kinetic model was founded. The reaction rate constants (k) were determined as 0.0026, 0.0024, 0.0014 and 0.0041 1/min, respectively. As a result of this study, the highest reaction rate and COD removal rate were obtained with the application of LP+Fenton+US.

Doğal afetler ve çevre dergisi, Jan 12, 2020

The objective of this study is to evaluate the performance of pyrolysis-treated rice straw (PPS) ... more The objective of this study is to evaluate the performance of pyrolysis-treated rice straw (PPS) in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (

Desalination and Water Treatment, Feb 24, 2015

AbstractThe objective of this study is to evaluate the performance of H2SO4− activated rice husk ... more AbstractThe objective of this study is to evaluate the performance of H2SO4− activated rice husk ash (ARHA) (burned at different temperatures (300–550°C) as compared to granular activated carbon (GAC) in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (4, 7, 9, and 11), initial concentration (5, 10, 15, 20, 25, and 50 mg/L), and contact time (0, 1, 5, 15, 30, 45, 60, 90, and 120 min). BET surface areas for ARHA300 (burned at 300°C) and ARHA550 (burned at 550°C) were determined as 143 and 68 m2/g, respectively. It was observed that the dye uptake by GAC and ARHA300 were not changed significantly when the pH of dye solution was increased from 4 to 11. Uptakes of dye were rapid and the adsorption increased with increasing contact time in all experiments. According to the R2 values for the adsorption of MB on ARHA300, ARHA500, and GAC, Langmuir model yields fit better than the Freundlich model. The max...

Celal Bayar Universitesi Fen Bilimleri Dergisi, Dec 25, 2016

The objective of this study is to evaluate the performance of colemanite (KA) and ulexite (UA) co... more The objective of this study is to evaluate the performance of colemanite (KA) and ulexite (UA) core waste which were obtained from boran industry in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (9, 11 and 13), initial concentration (10, 20, 30, 40, 50 mg/L), and contact time (0, 1, 5, 15, 30, 60, 90, and 120 min). The chemical properties and SEM images were determined of adsorbents. It was observed that the dye uptake by UA was not changed significantly when the pH of dye solution was increased from 9 to 13 and uptake of dye was rapid. The adsorption increased with increasing contact time in all experiments. According to R2 values for the adsorption of MB on KA and UA, Langmuir model yields fit better than Freundlich model. The qmax values were obtained 25.77 mg/g and 47.62 mg/g for KA and UA, respectively. The pseudo-first order kinetic model and the pseudo-second order kinetic model yields the best fit for adsorption on KA and UA, respectively. The correlation coefficients of the model for the linear plots are very close to 1.

Environmental Engineering and Management Journal, 2022

In this study, the removal of Methylene Blue (MB) and Methyl Orange (MO) dyestuffs from aqueous s... more In this study, the removal of Methylene Blue (MB) and Methyl Orange (MO) dyestuffs from aqueous solutions via adsorption by using magnetic nanoparticles of Fe3O4, Fe3O4@HA and Fe3O4@AC synthesized under laboratory conditions was investigated. The synthesized magnetic nanoparticles were characterized by SEM, EDX, XRD, BET surface area, FTIR, average pore diameter and particle size distribution analysis. When Fe3O4, Fe3O4@HA and Fe3O4@AC were used as adsorbents, the optimum pH values for MB were determined as pH 11, pH 9 and pH 7, respectively, and pH 6, pH 4 and pH 4 for MO, respectively. At the determined optimum pH values, Fe3O4, Fe3O4@HA and Fe3O4@AC were determined to be 4.2 mg/g, 4.8 mg/g and 8 mg/g for MB at an initial dye concentration of 10 mg/L, while Fe3O4, Fe3O4@HA and Fe3O4@AC were determined to be 3 mg/g, 1.6 mg/g and 4.5 mg/g for MO, respectively. It was found to be compatible with the Freundlich isotherm and pseudo second-order model of all adsorption experiments. This study showed that Fe3O4@HA, synthesized by binding HA to Fe3O4, and Fe3O4@AC, synthesized, and carbonized by pyrolysis, magnetic nanoparticles can be used as a good alternative adsorbent for removing hazardous dyes from wastewater due to their good cleaning efficiency as well as easy synthesis and regeneration.

International Journal of Environment and Geoinformatics

Improvement on the environmental permit application that has been put into force since 2014 by th... more Improvement on the environmental permit application that has been put into force since 2014 by the By Law on Environmental Permit and License (BLEPL) in Turkey has been achieved through a project realized by the Ministry of Environment and Urbanization to meet the developing and changing technology, and industry needs. The main outputs derived from this project will be briefly outlined and discussed in this study. Initially, the facility inventory lists were created on provincial basis across the country. The related institutions were then contacted, and the provincial and sectoral information of the enterprises that could be within the scope of BLEPL was obtained. On the country basis, 548.323 facilities were evaluated in which 142.477 facilities were classified as permitted, out of scope, in scope and not permitted. According to the data obtained by compiling the facility inventories within the scope of BLEPL constituted only 15% of the existing facilities that were included in th...

European Journal of Engineering and Applied Sciences

PAH’lar, iki veya daha fazla aromatik halkayı bünyesinde bulunduran, yarı uçucu organik bileşikle... more PAH’lar, iki veya daha fazla aromatik halkayı bünyesinde bulunduran, yarı uçucu organik bileşiklerdir. Su ortamlarında PAH konsantrasyonları ve etkileri son yıllarda üzerinde önemle durulan konuların başında gelmektedir. Sedimentler, su ortamındaki en önemli PAH rezervuarlarındandır. Bu nedenle sedimentler, sucul ekosistemlerinin su kalitesinin kirliliklerinin değerlendirmesinde sıklıkla kullanılmaktadır. PAH’lar organik bileşiklerin tam yanmamasından dolayı oluşmakta ve çeşitli kaynaklardan alıcı ortamlara ulaşabilmektedirler. PAH’lar çevre ve insan sağlığı açısından zararlı etkilere sahiptir ve endüstriyel gelişme ile doğal ortamlardaki PAH konsantrasyonlarında önemli artışlar olmuştur. Sanayi-yoğun havzalarda kentleşme ve endüstrileşmeden dolayı PAH miktarlarının yüksek olması beklenmektedir. Amerikan Çevre Koruma Ajansı (USEPA) tarafından belirlenen 16 öncelikli PAH türünün su kaynaklarında ve sedimentlerde izlenmesi, PAH’ların su ve sedimentlerdeki konsantrasyonlarının belirlen...

European Journal of Engineering and Applied Sciences

Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevrese... more Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevresel tehlikelere sebep olabileceği bilinen atıksuyun, ülkemizde uygulanan yaygın bir arıtma metodu bulunmamaktadır. Zeytin karasuyu olarak adlandıran bu atıksu yüksek miktarda organik madde, yağ-gres ve fenolik maddeler içermektedir. Yoğun kirlilik yüküne sahip olan atıksuyun alıcı ortamlara ya da kanala deşarj edilebilecek kadar arıtılması tek kademeli arıtma yöntemleriyle mümkün olamamaktadır. Bu çalışmada zeytin karasuyunun arıtımında iki farklı ön arıtma (asitle parçalama ve kireçle çöktürme) uygulanmış ve elde edilen giderme verimleri değerlendirilmiştir. Ön arıtma çalışmaları sonucunda kireç ile çöktürme (pH 12,5) uygulamasının, asit kullanılarak (pH’ın 2’nin altına düşürülmesi) yapılan parçalama işleminden daha başarılı olduğu tespit edilmiştir. Kireç ile ön çöktürme yöntemi uygulandığında KOİ, yağ-gres, TOK ve fenolik maddelerin giderim verimleri sırasıyla %52, %99,7, %42 ve %13 ola...

Su Kirlenmesi Kontrolü Dergisi, Dec 31, 2012

Özet Günümüzde, gelişmiş ve gelişmekte olan ülkelerde endüstriyel atıksulardan rengin azaltılması... more Özet Günümüzde, gelişmiş ve gelişmekte olan ülkelerde endüstriyel atıksulardan rengin azaltılması ve hatta atıksuların endüstriyel tesisin herhangi bir prosesinde tekrar kullanılabilmesi konusunda teşvikler yapılmakta ve bu konudaki çalışmalara ağırlık verilmektedir. Bu sebeple, fiziko-kimyasal, biyolojik metodlar ve bunların kombinasyonları gibi yeni atıksu arıtım metodları ile ilgili çalışmalara gereksinim duyulmaktadır. Bu çalışmada da, dokunmuş kumaş terbiyesi yapan bir tekstil endüstrisinden kaynaklanan atıksuların, aerobik ve anaerobik ön arıtılmasının ardından membran uygulamaları ile elde edilecek süzüntü suyunun proseste tekrar kullanım olanakları değerlendirilmiştir. 2000 yılında geliştirilen ve henüz birkaç atıksuyun arıtımında laboratuar ve pilot ölçekte denenen bir anaerobik reaktör olan Sabit Granül Yataklı Anaerobik Reaktör (SGYAR)'de arıtıma tabi tutulmuş olan atıksu, daha sonraki adımda Ultrafiltrasyon+Nanofiltrasyon (UF+NF) ünitelerinden oluşan bir membran sisteme verilmiştir. Bunun yanında, çalışmada kullanılan atıksuyun temin edildiği tekstil fabrikasında mevcut aerobik arıtma tesisi çıkış suyuna membran uygulaması (NF30 ve NF10) sonucunda, geri kazanım olanakları uzun süreli (96 saat) çalışma sonucuna göre değerlendirilmiştir. Yapılan denemelerde, her iki atıksu için de NF 30 membranların süzüntü suyu kalitesi bakımından uygulamada en uygun membran olacağı kanaatine varılmıştır. Sonuç olarak, anaerobik arıtma sonrası membran uygulamaları sonucunda tekrar kullanıma uygun su eldesi, yüksek iletkenlik parametresi sebebiyle mümkün olmaz iken, aerobik arıtma tesisi sonrası membran uygulaması sonucunda NF30 membran kullanımı ile proseste tekrar kullanıma (koyu renkli boyama, ilk yıkama vb.) uygun süzüntü suyu elde edilmiştir.

Springer briefs in molecular science, 2012

Emerging contaminants are chemicals recently discovered in natural streams as a result of human a... more Emerging contaminants are chemicals recently discovered in natural streams as a result of human and industrial activities. Most of them have no regulatory standard and can potentially cause deleterious effects in aquatic life at environmentally relevant concentrations. The conventional wastewater treatment plants (WWTPs) are not always effective for the removal of these huge classes of pollutants and so further water treatments are necessary. This chapter has the aim to study the adsorption process in the removal of emerging compounds. Firstly, a brief description of adsorption mechanism is given and then the study of conventional and non-conventional adsorbents for the removal of emerging compounds is reviewed with the comparison between them.

Doğal afetler ve çevre dergisi, Jan 27, 2023

With the rapid population growth, the amount of waste generated is also increasing. Today, conven... more With the rapid population growth, the amount of waste generated is also increasing. Today, conventional methods used for waste disposal are not suitable for reusing these wastes in a way that will not harm the environment or obtain energy. In recent years, the energy values of wastes that may cause harmful effects on the environment have started to be taken into account and the tendency towards disposal methods that can generate energy are increasing. The Thrace Region is located in an important geographical region for Turkey, where the population is dense, industry, agriculture, and livestock activities are carried out together, and solid waste production with high energy potential is also high. In this study, the biogas potential in the Thrace Region was determined by considering animal wastes, vegetable wastes, sewage sludge, and kitchen wastes. While determining the biogas potential of the Thrace Region, the data of the Turkish Statistical Institute (TUIK) on a yearly basis were used. In this study, it was determined that the total

Sigma Journal of Engineering and Natural Sciences, 2006

In this study, anaerobic treatment of dyes, which are important considerations during the treatme... more In this study, anaerobic treatment of dyes, which are important considerations during the treatment of textile effluents, were determined. Textile effluents have high strength characteristics and have no regulation in the Water Pollution Control Legislation in our country for the color parameter to discharge to receiving bodies. For this reason, textile effluents were generally treated using aerobic treatment and discharged to receiving bodies with high color. However, today, there are some mandatory rules for color removal from industrial wastewater in developed and developing countries. Therefore, studies on color removal were intensively concerned. Anaerobic color removal in reviewed studies was performed using anaerobic or anaerobic/aerobic sequential reactors by anaerobic or facultative microorganisms. It was concluded from previous studies that color removal from textile effluents was successful using anaerobic-aerobic systems in which anaerobic step achieves effective color removal and aerobic step provides additional COD removal. From our reviews, we believe that if anaerobic treatment unit is installed before the activated sludge systems, which were constructed and in operating condition, receiving bodies can be improved to better status.

Trakya Üniversitesi Fen Bilimleri Dergisi, Aug 5, 2016

... sulama ve endüstriyel faaliyetler amacıyla kullanılan yeraltı su kaynaklarının, kalitesinin k... more ... sulama ve endüstriyel faaliyetler amacıyla kullanılan yeraltı su kaynaklarının, kalitesinin korun-ması da oldukça önemli bir konudur (Aslan ve Akkaya ... Bu suların kolay erişilebilir bir ısıda buhara dönüşmesi ve buna bağlı üretilen enerjinin en iyi ve-rimle iletilmesi nedeniyle ideal ...

DergiPark (Istanbul University), Dec 30, 2021

Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevrese... more Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevresel tehlikelere sebep olabileceği bilinen atıksuyun, ülkemizde uygulanan yaygın bir arıtma metodu bulunmamaktadır. Zeytin karasuyu olarak adlandıran bu atıksu yüksek miktarda organik madde, yağ-gres ve fenolik maddeler içermektedir. Yoğun kirlilik yüküne sahip olan atıksuyun alıcı ortamlara ya da kanala deşarj edilebilecek kadar arıtılması tek kademeli arıtma yöntemleriyle mümkün olamamaktadır. Bu çalışmada zeytin karasuyunun arıtımında iki farklı ön arıtma (asitle parçalama ve kireçle çöktürme) uygulanmış ve elde edilen giderme verimleri değerlendirilmiştir. Ön arıtma çalışmaları sonucunda kireç ile çöktürme (pH 12,5) uygulamasının, asit kullanılarak (pH'ın 2'nin altına düşürülmesi) yapılan parçalama işleminden daha başarılı olduğu tespit edilmiştir. Kireç ile ön çöktürme yöntemi uygulandığında KOİ, yağ-gres, TOK ve fenolik maddelerin giderim verimleri sırasıyla %52, %99,7, %42 ve %13 olarak ve asit ile parçalanma yöntemi uygulandığında ise %43, %89, %30, %0,3 olarak tespit edilmiştir. Sonuç olarak zeytin karasuyuna kireçle çöktürme ön arıtma işleminin ardından uygulanacak olan nihai arıtma yöntemlerinin daha başarılı giderme verimleri elde edilmesine sebep olabileceği belirlenmiştir.

DESALINATION AND WATER TREATMENT, 2018

In this study, anaerobic treatment of dyes, which are important considerations during the treatme... more In this study, anaerobic treatment of dyes, which are important considerations during the treatment of textile effluents, were determined. Textile effluents have high strength characteristics and have no regulation in the Water Pollution Control Legislation in our country for the color parameter to discharge to receiving bodies. For this reason, textile effluents were generally treated using aerobic treatment and discharged to receiving bodies with high color. However, today, there are some mandatory rules for color removal from industrial wastewater in developed and developing countries. Therefore, studies on color removal were intensively concerned. Anaerobic color removal in reviewed studies was performed using anaerobic or anaerobic/aerobic sequential reactors by anaerobic or facultative microorganisms. It was concluded from previous studies that color removal from textile effluents was successful using anaerobic-aerobic systems in which anaerobic step achieves effective color removal and aerobic step provides additional COD removal. From our reviews, we believe that if anaerobic treatment unit is installed before the activated sludge systems, which were constructed and in operating condition, receiving bodies can be improved to better status.

Environment, Development and Sustainability, Apr 2, 2019

In this study, the levels of polycyclic aromatic hydrocarbons (PAHs) were determined in various c... more In this study, the levels of polycyclic aromatic hydrocarbons (PAHs) were determined in various components in the Meric-Ergene River Basin which is one of Turkey’s intensive industrialization centers and which accordingly has faced significant environmental pollution and has about 1300 industrial plants within its boundaries. In the river basin, 16 USEPA PAHs were measured in a total of 192 samples consisting of soil, lichen, pine needle and total deposition samples for 1 year to represent the four seasons at a total of 12 points in 4 different regions which were determined as intensive industrial area, industrial + residential area, agricultural area and background. According to the results obtained, the total PAH values, in all sampling points, varied between 69.6 and 1277.7 ng/g (dry wt) for soil, lichen and pine needle samples and between 0 and 937.8 ng/m 2 -day for the total deposition samples. The highest values were determined in the fall season for the lichen samples and ind...

Journal of Nanomaterials, 2016

The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (R... more The removal of Acid Red 114 (AR114) dye by adsorption process, using the magnetic nanoparticle (RHA-MNP) which is produced from rice husk ash burned at 300 ∘ C and the magnetic nanoparticle (MNP, Fe 3 O 4), was studied. Batch processes were used under different test parameters: pH (2, 4, 6, and 10) and without pH, initial dye concentration (20, 40, 60, 80, and 100 mg/L), and contact time (0, 1, 5, 10, 15, 30, 45, 60, 90, and 150 min). Optimum conditions for AR114 removal were found to be at natural pH (pH without correction) for both adsorbents. Freundlich isotherm was found to be more consistent for MNP and Langmuir isotherm was found to be more consistent for RHA-MNP. The maximum adsorption capacities of MNP and RHA-MNP adsorbents for AR114 dye were equal to 111 mg/g. The kinetic experimental data fitted the pseudo-second-order model for both MNP and RHA-MNP. It can be concluded that RHA-MNP which is a waste could be used as low-cost adsorbent to remove AR114 from aqueous solution.

Environmental Engineering and Management Journal, 2022

In this study, the treatment of olive mill wastewater (OMW), which is physicochemically pre-treat... more In this study, the treatment of olive mill wastewater (OMW), which is physicochemically pre-treated by acid cracking (AC) and lime precipitation (LP), was evaluated by a combination of Fenton oxidation, ultraviolet (UV), and ultrasound (US) processes. The results obtained were evaluated in terms of the removal efficiencies of chemical oxygen demand (COD), total organic carbon (TOC), oil-grease, and UV254 parameters. The COD removal efficiencies of precipitated OMW (p-OMW) after AC+Fenton+UV, LP+Fenton+UV, AC+Fenton+US, and LP+Fenton+US processes were found as 70, 78, 77, and 90%, respectively. Aromatic compounds which are formed as a result of phenol oxidation are not significantly affected by UV application while they were partially affected by US application. In the experimental studies of UV and US, compliance with pseudo-first-order reaction kinetics was determined. In the experimental studies of AC+Fenton+UV, LP+Fenton+UV, AC+Fenton+US, and LP+Fenton+US, compliance with the pseudo-first-order kinetic model was founded. The reaction rate constants (k) were determined as 0.0026, 0.0024, 0.0014 and 0.0041 1/min, respectively. As a result of this study, the highest reaction rate and COD removal rate were obtained with the application of LP+Fenton+US.

Doğal afetler ve çevre dergisi, Jan 12, 2020

The objective of this study is to evaluate the performance of pyrolysis-treated rice straw (PPS) ... more The objective of this study is to evaluate the performance of pyrolysis-treated rice straw (PPS) in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (

Desalination and Water Treatment, Feb 24, 2015

AbstractThe objective of this study is to evaluate the performance of H2SO4− activated rice husk ... more AbstractThe objective of this study is to evaluate the performance of H2SO4− activated rice husk ash (ARHA) (burned at different temperatures (300–550°C) as compared to granular activated carbon (GAC) in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (4, 7, 9, and 11), initial concentration (5, 10, 15, 20, 25, and 50 mg/L), and contact time (0, 1, 5, 15, 30, 45, 60, 90, and 120 min). BET surface areas for ARHA300 (burned at 300°C) and ARHA550 (burned at 550°C) were determined as 143 and 68 m2/g, respectively. It was observed that the dye uptake by GAC and ARHA300 were not changed significantly when the pH of dye solution was increased from 4 to 11. Uptakes of dye were rapid and the adsorption increased with increasing contact time in all experiments. According to the R2 values for the adsorption of MB on ARHA300, ARHA500, and GAC, Langmuir model yields fit better than the Freundlich model. The max...

Celal Bayar Universitesi Fen Bilimleri Dergisi, Dec 25, 2016

The objective of this study is to evaluate the performance of colemanite (KA) and ulexite (UA) co... more The objective of this study is to evaluate the performance of colemanite (KA) and ulexite (UA) core waste which were obtained from boran industry in the removal of methylene blue (MB) from aqueous solution. Batch studies were performed to evaluate the influences of various experimental parameters like pH (9, 11 and 13), initial concentration (10, 20, 30, 40, 50 mg/L), and contact time (0, 1, 5, 15, 30, 60, 90, and 120 min). The chemical properties and SEM images were determined of adsorbents. It was observed that the dye uptake by UA was not changed significantly when the pH of dye solution was increased from 9 to 13 and uptake of dye was rapid. The adsorption increased with increasing contact time in all experiments. According to R2 values for the adsorption of MB on KA and UA, Langmuir model yields fit better than Freundlich model. The qmax values were obtained 25.77 mg/g and 47.62 mg/g for KA and UA, respectively. The pseudo-first order kinetic model and the pseudo-second order kinetic model yields the best fit for adsorption on KA and UA, respectively. The correlation coefficients of the model for the linear plots are very close to 1.

Environmental Engineering and Management Journal, 2022

In this study, the removal of Methylene Blue (MB) and Methyl Orange (MO) dyestuffs from aqueous s... more In this study, the removal of Methylene Blue (MB) and Methyl Orange (MO) dyestuffs from aqueous solutions via adsorption by using magnetic nanoparticles of Fe3O4, Fe3O4@HA and Fe3O4@AC synthesized under laboratory conditions was investigated. The synthesized magnetic nanoparticles were characterized by SEM, EDX, XRD, BET surface area, FTIR, average pore diameter and particle size distribution analysis. When Fe3O4, Fe3O4@HA and Fe3O4@AC were used as adsorbents, the optimum pH values for MB were determined as pH 11, pH 9 and pH 7, respectively, and pH 6, pH 4 and pH 4 for MO, respectively. At the determined optimum pH values, Fe3O4, Fe3O4@HA and Fe3O4@AC were determined to be 4.2 mg/g, 4.8 mg/g and 8 mg/g for MB at an initial dye concentration of 10 mg/L, while Fe3O4, Fe3O4@HA and Fe3O4@AC were determined to be 3 mg/g, 1.6 mg/g and 4.5 mg/g for MO, respectively. It was found to be compatible with the Freundlich isotherm and pseudo second-order model of all adsorption experiments. This study showed that Fe3O4@HA, synthesized by binding HA to Fe3O4, and Fe3O4@AC, synthesized, and carbonized by pyrolysis, magnetic nanoparticles can be used as a good alternative adsorbent for removing hazardous dyes from wastewater due to their good cleaning efficiency as well as easy synthesis and regeneration.

International Journal of Environment and Geoinformatics

Improvement on the environmental permit application that has been put into force since 2014 by th... more Improvement on the environmental permit application that has been put into force since 2014 by the By Law on Environmental Permit and License (BLEPL) in Turkey has been achieved through a project realized by the Ministry of Environment and Urbanization to meet the developing and changing technology, and industry needs. The main outputs derived from this project will be briefly outlined and discussed in this study. Initially, the facility inventory lists were created on provincial basis across the country. The related institutions were then contacted, and the provincial and sectoral information of the enterprises that could be within the scope of BLEPL was obtained. On the country basis, 548.323 facilities were evaluated in which 142.477 facilities were classified as permitted, out of scope, in scope and not permitted. According to the data obtained by compiling the facility inventories within the scope of BLEPL constituted only 15% of the existing facilities that were included in th...

European Journal of Engineering and Applied Sciences

PAH’lar, iki veya daha fazla aromatik halkayı bünyesinde bulunduran, yarı uçucu organik bileşikle... more PAH’lar, iki veya daha fazla aromatik halkayı bünyesinde bulunduran, yarı uçucu organik bileşiklerdir. Su ortamlarında PAH konsantrasyonları ve etkileri son yıllarda üzerinde önemle durulan konuların başında gelmektedir. Sedimentler, su ortamındaki en önemli PAH rezervuarlarındandır. Bu nedenle sedimentler, sucul ekosistemlerinin su kalitesinin kirliliklerinin değerlendirmesinde sıklıkla kullanılmaktadır. PAH’lar organik bileşiklerin tam yanmamasından dolayı oluşmakta ve çeşitli kaynaklardan alıcı ortamlara ulaşabilmektedirler. PAH’lar çevre ve insan sağlığı açısından zararlı etkilere sahiptir ve endüstriyel gelişme ile doğal ortamlardaki PAH konsantrasyonlarında önemli artışlar olmuştur. Sanayi-yoğun havzalarda kentleşme ve endüstrileşmeden dolayı PAH miktarlarının yüksek olması beklenmektedir. Amerikan Çevre Koruma Ajansı (USEPA) tarafından belirlenen 16 öncelikli PAH türünün su kaynaklarında ve sedimentlerde izlenmesi, PAH’ların su ve sedimentlerdeki konsantrasyonlarının belirlen...

European Journal of Engineering and Applied Sciences

Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevrese... more Zeytinyağı üretimi sonrası oluşan ve arıtılmadan alıcı ortamlara deşarj edilmesinin ciddi çevresel tehlikelere sebep olabileceği bilinen atıksuyun, ülkemizde uygulanan yaygın bir arıtma metodu bulunmamaktadır. Zeytin karasuyu olarak adlandıran bu atıksu yüksek miktarda organik madde, yağ-gres ve fenolik maddeler içermektedir. Yoğun kirlilik yüküne sahip olan atıksuyun alıcı ortamlara ya da kanala deşarj edilebilecek kadar arıtılması tek kademeli arıtma yöntemleriyle mümkün olamamaktadır. Bu çalışmada zeytin karasuyunun arıtımında iki farklı ön arıtma (asitle parçalama ve kireçle çöktürme) uygulanmış ve elde edilen giderme verimleri değerlendirilmiştir. Ön arıtma çalışmaları sonucunda kireç ile çöktürme (pH 12,5) uygulamasının, asit kullanılarak (pH’ın 2’nin altına düşürülmesi) yapılan parçalama işleminden daha başarılı olduğu tespit edilmiştir. Kireç ile ön çöktürme yöntemi uygulandığında KOİ, yağ-gres, TOK ve fenolik maddelerin giderim verimleri sırasıyla %52, %99,7, %42 ve %13 ola...

Su Kirlenmesi Kontrolü Dergisi, Dec 31, 2012

Özet Günümüzde, gelişmiş ve gelişmekte olan ülkelerde endüstriyel atıksulardan rengin azaltılması... more Özet Günümüzde, gelişmiş ve gelişmekte olan ülkelerde endüstriyel atıksulardan rengin azaltılması ve hatta atıksuların endüstriyel tesisin herhangi bir prosesinde tekrar kullanılabilmesi konusunda teşvikler yapılmakta ve bu konudaki çalışmalara ağırlık verilmektedir. Bu sebeple, fiziko-kimyasal, biyolojik metodlar ve bunların kombinasyonları gibi yeni atıksu arıtım metodları ile ilgili çalışmalara gereksinim duyulmaktadır. Bu çalışmada da, dokunmuş kumaş terbiyesi yapan bir tekstil endüstrisinden kaynaklanan atıksuların, aerobik ve anaerobik ön arıtılmasının ardından membran uygulamaları ile elde edilecek süzüntü suyunun proseste tekrar kullanım olanakları değerlendirilmiştir. 2000 yılında geliştirilen ve henüz birkaç atıksuyun arıtımında laboratuar ve pilot ölçekte denenen bir anaerobik reaktör olan Sabit Granül Yataklı Anaerobik Reaktör (SGYAR)'de arıtıma tabi tutulmuş olan atıksu, daha sonraki adımda Ultrafiltrasyon+Nanofiltrasyon (UF+NF) ünitelerinden oluşan bir membran sisteme verilmiştir. Bunun yanında, çalışmada kullanılan atıksuyun temin edildiği tekstil fabrikasında mevcut aerobik arıtma tesisi çıkış suyuna membran uygulaması (NF30 ve NF10) sonucunda, geri kazanım olanakları uzun süreli (96 saat) çalışma sonucuna göre değerlendirilmiştir. Yapılan denemelerde, her iki atıksu için de NF 30 membranların süzüntü suyu kalitesi bakımından uygulamada en uygun membran olacağı kanaatine varılmıştır. Sonuç olarak, anaerobik arıtma sonrası membran uygulamaları sonucunda tekrar kullanıma uygun su eldesi, yüksek iletkenlik parametresi sebebiyle mümkün olmaz iken, aerobik arıtma tesisi sonrası membran uygulaması sonucunda NF30 membran kullanımı ile proseste tekrar kullanıma (koyu renkli boyama, ilk yıkama vb.) uygun süzüntü suyu elde edilmiştir.