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Recent Submissions

Bio-Aging of polyethylene during anaerobic and aerobic digestion Dassouki Dit Tahan, Maha; Özdemir, Melek; Sanin, Faika Dilek; İmamoğlu, İpek (2025-07-01) Presence of microplastics (MPs) in wastewater treatment plants (WWTPs) require scrutiny from two perspectives: impact of MPs on treatment and on MPs themselves. Accordingly, this study investigates the impact of high-densi...
Effect of pH and salinity on photofermentative hydrogen and poly-hydroxybutyric acid production via Rhodobacter capsulatus YO3 Hoşafcı, Ertan; Ateş, Candan; Volkan, Aşkın Efe; Koku, Harun; Bayramoğlu, Tuba Hande (2025-05-10) The production of poly-hydroxybutyrate (PHB) and H2 via Rhodobacter capsulatus YO3, an uptake hydrogenase deficient (hup−) mutant, was investigated in this study. The pH and salinity of the bioreactor medium were investiga...
Microplastics from industrial sources: A known but overlooked problem Karakurt, Ozan; Altuntaş, Oğuzhan; Şimşek, İrem; Hatinoğlu, Dilara; Sanin, Faika Dilek (2025-04-01) Current studies suggest that industrial wastewaters can be major sources of microplastics (MPs), but specific studies are rare in regard to specific industries and organized industrial zones (OIZs). This study addresses th...
CO2 Emission Inventory in Türkiye and Estimation of CO2 Concentration over Türkiye by Using Dispersion Modelling Can, Ali; Atımtay, Aysel; Tokdemir , Turgut (Gazi Universitesi Fen Bilimleri Dergisi Part C: Tasarim ve Teknoloji, 2025-3-24) Atmosferin yoğunluğu ve bileşiği Dünya sıcaklığını güçlü bir şekilde etkilemektedir. Sera gazı salınımı atmosfer dengesini değiştirerek ve enerjinin bir kısmını absorbe ederek hapsetmiştir. En önemli sera gazı (CO2)karbond...
A framework for assessing the circular economy potential in the water and agriculture sectors in Türkiye through the water-energy-food-ecosystem nexus Demir, Ece; Alp, Emre (2025-03-01) The growing need for agricultural production and the consequences of climate change necessitate new paradigms for sustainable resource management such as the Water-Energy-Food-Ecosystem (WEFE) nexus and the circular econom...
Removal capacities of wastewater treatment plants to minimize spread of enteroviruses Ozgur, Cansu; İçgen, Bülent (2025-02-01) The enteroviruses such as Adenovirus, Enterovirus, Hepatitis A virus, Norovirus, and Rotavirus are mostly transmitted via water and are com- monly seen in Turkey. Due to lack of regulations for monitoring these viruses at ...
An integrated modeling approach to assess water-energy nexus in a semi-arid watershed Özcan, Zeynep; Aydınalp Köksal, Merih; Alp, Emre (2025-02-01)
Simultaneous devulcanization and denitrification: a novel approach for valorization of both ground tire rubber and nitrate-containing wastewater Çataklı, Tercan; Bayramoğlu, Tuba Hande (2025-02-01) This study focused on a new approach for valorization of both ground tire rubber (GTR) and nitrate-containing wastewater via simultaneous devulcanization and denitrification. Initially, sulfur-based autotrophic denitrifier...
Reactive Transport Modeling of Uranium in Subsurface: Impact of Field-Scale Heterogeneity and Biogeochemical Dynamics Gökçe, Selin; Şengör, Sema Sevinç (2025-02-01) Understanding the fate of contaminants in heterogeneous aquifer systems is crucial to explain their transport behavior. Although it has been proven that heterogeneity has a significant control over the quantification of th...
Multi-group organic pollutants in urban and suburban atmospheric particulate matter (PM2.5): Temporal variation, meteorological impact, and sources Koçak, Ebru; ASLAN, SEDA; İmamoğlu, İpek; Tuncel, Süleyman Gürdal (2025-01-01) Several adverse health impacts have been attributed to particulate matter-PM2.5, defined as having a diameter of less than 2.5 µm. The World Health Organization has determined that 5 µg m−3 is the 24-h limit threshold. PM2...
Orange Peel Waste Valorization: An Integrated Assessment of Environmental and Economic Sustainability in Animal Feed Production Dilek, Filiz Bengü; Barampouti, Elli M.; Mai, Sofia; Moustakas, Konstantinos; Malamis, Dimitris; Martin, David S.; Yetiş, Ülkü (2025-01-01) This study examines the environmental and economic sustainability of producing a feed ingredient from waste orange peels (OP), for use in animal feed, focusing on two waste valorization strategies: one involving hydrolyzed...
Assessment of climate changes for predicting water-energy-food-ecosystem nexus vulnerability in a semi-arid basin Ozcan, Zeynep; Trinh, Toan; Kavvas, M. Levent; Alp, Emre (2024-12-19) The Water-Energy-Food-Ecosystem (WEFE) nexus highlights the interconnections between water, energy, food, and ecosystems. This study examines climate change's impact on precipitation and temperature in the semi-arid Sakary...
Fate and effect of Polyamide-6 microplastics in mesophilic and thermophilic anaerobic digestion Şimşek, İrem; Sanin, Faika Dilek (2024-11-15) Research has demonstrated that depending on the type and concentration, microplastics affect anaerobic digestion (AD). Owing to the high abundance of polyamide-6 (PA6) in wastewater treatment plants and limited understandi...
Use of lyophilized and acclimated digestate dominated by Methanobrevibacter as a start-up inoculum in anaerobic digester led to higher methane production in biochemical methane potential assays Cam, Deniz; Sayin, Sena; Sarman, Oral Zeki; Iren, Erol; İçgen, Bülent (2024-09-01) Transporting wet inoculum for full-scale anaerobic digester (AD) start-up is usually infeasible and costly, especially, for remote locations. To overcome these burdens lyophilized AD inoculum is thought to be used after on...
Assessment of the implementation status of best available techniques for cleaner production in the textile industry Yaman, Mehmet Eren; Ozturk, Emrah; Yetiş, Ülkü; KİTİŞ, Mehmet (2024-08-01) The draft Integrated Pollution Prevention and Control (IPPC) regulation mandates compliance with best available techniques (BATs) for textile manufacturers. A study in Turkish textile facilities, covering 56 units across f...
A life cycle assessment of the membrane processes applied for salt recovery from reactive dyeing wastewater Şimşek, Naz Zeynep; Yetiş, Ülkü (2024-06-01) The environmental impacts of membrane treatment for salt and water recovery from reactive dyeing wastewater are assessed using the Life Cycle Assessment (LCA) framework. Three membrane treatment options (UF-only, NF-only, ...
Nutrient recovery from manure digestate by using waste magnesite powder and bone meal as sustainable substitutes for struvite precipitation Kutlar, Feride Ece; Engin, Iskin; Yılmazel Tokel, Yasemin Dilşad (2024-05-08) BACKGROUND: Struvite (MgNH4PO4.6H(2)O) precipitation is a sustainable approach that can offer simultaneous removal/recovery of nutrients from biogas plant effluents. However, most biogas plant effluents contain a higher mo...
Enhancing Microplastics Recovery from Complex Sludge Samples Using COD‑Guided Pretreatment Sanin, Faika Dilek (2024-05-01) Given the society’s continuous reliance on plastic materials, large amounts of micron-sized plastic particles (i.e., microplastics, MPs) reach wastewater treatment plants (WWTPs) every day. Despite their effective removal ...
Unraveling the mechanisms of free radicals-based transformation and accumulation of potentially toxic metal(loid)s in biochar- and compost-amended soil-plant systems Cheema, Ayesha Imtiyaz; Amina, Amina; Ullah, Habib; Munir, Mehr Ahmed Mujtaba; Rehman, Abdul; Sarma, Hemen; Pikoń, Krzysztof; Yousaf, Balal (2024-04-10) Rapid industrialization and urbanization have resulted in the widespread contamination of soil by potentially toxic metal(loid)s (PTMs). Among these, arsenic (As), cadmium (Cd), chromium (Cr) lead (Pb) and nickel (Ni) are ...
Resource utilization in the sub-sectors of the textile industry: opportunities for sustainability KIR, Alperen; Ozturk, Emrah; Yetiş, Ülkü; KİTİŞ, Mehmet (2024-01-01) It was aimed to determine the specific resource use and reduction potential profiles in various textile sub-sectors (cotton woven fabric dyeing-finishing, wool woven fabric dyeing-finishing, synthetic woven fabric dyeing-f...

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