Department of Environmental Engineering, Article

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Recent Submissions

ANOVA-based comparative study for landfill age and climate impacts on landfill leachate characteristics Ergene, Didar; Aksoy, Ayşegül; Sanin, Faika Dilek (2026-07-01) This study investigates the combined effects of precipitation and landfill age on leachate characteristics using one-way ANOVA to identify statistically significant differences among impact groups. The primary objective is...
PET microplastics in mesophilic anaerobic digestion after thermal-enzyme combined disintegration Bahçecioğlu, Elif N.; Sanin, Faika Dilek (2026-06-01) Microplastics (MPs) are increasingly found in wastewater treatment plants and can affect the efficiency of anaerobic digestion (AD), since over 90% are retained in waste activated sludge (WAS). Among these, polyethylene te...
Electrolyte-aware benchmarking of anaerobic digestion–microbial electrolysis cells treating cattle manure Oden, Berkan; Yılmazel, Yasemin Dilşad (2026-05-01)
Multi-dimensional Assessment of the Water-Food Nexus in a Semi-Arid Watershed Özel, Beyza; Demir, Yasemin; Alp, Emre (2026-03-01) The availability of water is crucial for ensuring global food security, particularly in regions most affected by climate change. Understanding the trade-offs and synergies between the availability of water and the food sec...
Advancing circular water transitions in the WEFE nexus with the Ostrom's institutional analysis and development framework Demir, Ece; Alp, Emre (2026-03-01) Fragmented governance can exacerbate stakeholder conflicts and resource inefficiencies, necessitating integrated approaches in water management. The implementation of the Water-Energy-Food-Ecosystem (WEFE) nexus could stre...
From Shelf to Skin: Tracing Microplastic Contamination in Cosmetics and Personal Care Products across Türkiye Bal, Yaren; Tavşanoğlu, Ülkü Nihan; Kankılıç, Gökben Başaran (Springer Science and Business Media LLC, 2026-3) This study investigates microplastic content in 79 personal care and cosmetic products (PCCPs)—shampoos, shower gels, peeling gels, and toothpastes—from various commercial brands in Türkiye, each analyzed through multiple ...
Uncovering Systemic Dynamics through an Integrated WEFE Nexus Index across 21st Century Futures Özcan, Zeynep; Alp, Emre (2026-02-05) Achieving sustainability under accelerating climate and socioeconomic pressures requires moving beyond siloed sectoral management toward a system-thinking approach. The water-energy-food-ecosystem (WEFE) Nexus offers a hol...
WEFE nexus unveiled: a comprehensive review of monitoring and modelling methods in the water-energy-food-ecosystems nexus Vrachioli, Maria; Mellios, Nikos; Alp, Emre; Borchard, Nils; Coutinho Calheiros, Cristina Sousa; Castelli, Giulio; Coletta, Virginia Rosa; Carvalho, Pedro N; Domínguez-Soberanes, Julieta (2025-11-01) Sustainable resource management in the face of climate change is a pressing challenge for our society. This paper delves into the water-energy-food-ecosystems (WEFE) nexus, a scientific framework that supports the integrat...
Hybrid physical-statistical framework for seasonal streamflow forecasting in the Upper Feather River Basin, California Özcan, Zeynep; Iseri, Y.; Ulloa, F.; Imbulana, N.; Snider, E.; Mure-Ravaud, M.; Anderson, M. L.; Kavvas, M. L. (2025-08-01) Seasonal streamflow forecasts are essential given climate-driven extremes that breach stationarity in traditional methods. The complex hydrology and competing demands necessitate improved forecasting in the Upper Feather R...
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...
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...
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)
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...

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