Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Book Part Energy Production from Gas Hydrates(Elsevier, 2025) Çifçi, G.; Parlaktuna, M.; Çelebi, S.S.; Günaydın, S.O.Gas hydrates are a type of natural formation that contains large amounts of mostly methane, which is also known as natural gas, and water, in the form of ice. Methane hydrates are cages of water molecules that surround and trap methane molecules. Gas hydrate is geophysical, geologically and economically important for several reasons: Gas hydrates are good cap rocks for oil and natural gas. The methane hydrate itself is an important energy source. A volume of gas hydrate can store up to 164 times per volume of gas as zipped gas, and the fact that gas hydrate occurs almost all around the world. Methane seepage may indicate the existence of a deeper hydrocarbon reservoir, and the methane production and migration in the slope sediments may cause massive slope failure. Last but not least Methane gas has a minimum 22 times more global warm absorption capacity compared to carbon dioxide if it is released into the atmosphere. In other words, greenhouse gas is due to its contribution to climate change. Gas hydrates have drawn significant interest as a potential near future energy resource. Research in the production field of gas hydrates has focused on several key areas, including the feasibility of commercial production, the environmental impacts, and the technological improvements associated with the safe recovery of gas. © 2025 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Book Part Sample Preparation Using Microfluidic Technologies for Non-Invasive Tests(Elsevier, 2025) Oksuz, C.; Tarim, E.A.; Ozcan, H.A.; Koc, S.; Tekin, H.C.The collection of a biological sample and the steps carried out to obtain the target in a sample covers the sample preparation procedures which are one of the important steps for diagnostic tests. Removing interferences in a complex sample, preventing undesirable reactions, separating, purifying, and enriching the sample are among the steps that can be applied to samples for analysis. Non-invasive tests include samples such as urine, saliva, sweat, tear, breath and are preferred because they are simple, painless, cost-effective and cause fewer complications. In traditional methods applied in clinics, most of the steps such as centrifugation, pipetting, staining, and washing are performed manually by a technician. For this reason, tests are costly, require long analysis time, and have a significant risk of contamination and manual errors. Microfluidic technologies allow automating sample collection and preparation steps by integrating many components on a single chip. Thereby, low-volume samples can be processed automatically with high efficiency and purity. In this chapter, the sample preparation methods used in microfluidic devices for non-invasive tests analyzing human samples including sweat, urine, saliva, tears, sexual samples, and other body fluids are reviewed. This information aims to facilitate the development of potential sample preparation methods and applications for non-invasive diagnostic tests. © 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Book Part Waste to Energy Management(Elsevier, 2025) Yagmur Goren, A.Y.; Kalinci, Y.; Dincer, I.Today, the world faces growing challenges with waste problems since people have moved the problems from past to future. The key question is: is waste a problem or a resource? The correct response to this question can be found by investigating, in more detail, the types of waste and implemented waste management methods. The chapter consists of six main sections. The first section is focused on classification, which explains what waste is and categorizes it according to the producer (e.g., municipal, industrial, and hazardous) and chemical composition (for instance, organic, inorganic, and microbiological). The second section presents legislative trends. It is seen that the waste management legislations are changing from country to country. Also, it can change over time because every technological development emerges its waste. The third section covers waste management methods such as recycling, refuse-derived fuel, landfill, and thermal methods. The landfill method is the oldest and the cheapest one. It is seen that the method will continue in the near future, too, though a lot of legal regulations have been made to reduce its usage. Thermal methods are commonly used in the industrial sector. Hence, thermal methods such as incineration, pyrolysis, and gasification are examined in detail. Considering environmental issues, thermal technology moves toward gasification systems to reduce greenhouse gas emissions and the formation of by-products. The fourth section presents illustrative examples related to using waste management methods or their combinations. Further, a case study, which consists of a circulated fluidized bed gasification system, is investigated from the exergy and exergoeconomic points of view. The chapter presents exergy and exergoeconomic analyses in detail. The analyses show that it can produce 1.17 MWe power and 0.521kg/s hydrogen with 3.33 $/kg cost from 8.5kg/s biomass waste. Finally, future scenarios for waste management are investigated. Also, to achieve zero waste targets in the future, circular economy and industrial symbiosis concepts are examined, and some successful examples from around the world are presented. © 2025 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Book Part Corn Oil Blends(Elsevier, 2025) Ozen, B.; Tokatli, F.This book chapter is focused on corn oil blends and their diverse applications. Corn oil, primarily obtained through the extraction of corn germ, is renowned for its high concentration of essential unsaturated fatty acids, particularly linolenic acid as well as tocopherols. Its utility extends beyond the realm of food products, extending into cosmetics, pharmaceuticals, animal feeds, and biodiesel production. The first section of this chapter summarizes the chemical composition and properties of corn oil, highlighting its nutritional attributes. Subsequently, it delves into innovative combinations involving corn oil and other edible oils such as fish, sunflower, coconut, and soybean oils, showcasing the diverse applications of these blended oils. The primary objective of these blends is reported to enhance the oxidative stability of the oils within them. The blends, including corn oil, were investigated for their thermal stability as frying oil. In addition, corn oil is combined with various fats and oils, including tallow and milkfat, for the production of interesterified fats. Furthermore, shortenings incorporate these oil blends, some of which contain corn oil. This chapter also includes examples of research studies assessing the impact of blending on health-related factors. In addition to the practical applications, a considerable portion of research has been dedicated to detecting the presence of corn oil in various oil blends. This is achieved through a combination of spectroscopic approaches and various chemometric methods. © 2026 Elsevier Inc. All rights reserved.Book Enhanced Geothermal Systems (EGS) for Sustainable Development(Elsevier, 2025) Chandrasekharam, D.Enhanced Geothermal Systems for Sustainable Development presents EGS as an essential tool in securing abundant, clean, carbon-free energy to help meet growing global energy demands. This book lays a foundation with an overview of the thermal regime of the earth, addresses carbon dioxide sources, their effects on the climate and mitigation strategies using EGS, summarizes hydrothermal sources, EGS concepts, its historical background, EGS technology, economic and environmental considerations and culminates in global case studies. Authored by a recognized geothermal energy expert, Enhanced Geothermal Systems for Sustainable Development delivers a centralized text that emphasises fundamental principles, methodology, application, and economics of Enhanced Geothermal Systems, delivers a basic understanding of EGS concepts and applications in the lab and field, includes global case studies demonstrating the viability of geothermal energy, and supports sustainability. Packed with foundational and practical information on EGS, as well as case studies highlighting EGS applications worldwide, this book presents a much-needed overview for undergraduate and graduate students, energy industry professionals and researchers, and companies seeking a stake in the carbon-neutral business to reduce their carbon footprints. This essential volume covers EGS basics, technologies, applications, and benefits, along with case studies, examples, and economics. This accessible text on EGS is essential in the present context of global energy security - it paves a path to a carbon-free future that is within reach. © 2025 Elsevier B.V., All rights reserved.Book Part Aeration Systems for Wastewater Treatments(Elsevier, 2025) Recepoğlu, Y.K.; Gören, A.Y.Aeration systems are critical components in wastewater treatment, playing a fundamental role in enhancing oxygen transfer to support microbial activity essential for pollutant breakdown. This chapter provides a comprehensive overview of various aeration techniques, including diffused, mechanical, natural, and jet aeration systems, detailing their operational mechanisms, efficiencies, and energy consumption. The chapter also addresses design considerations, advantages, and limitations, with a focus on optimizing performance and sustainability. Through a detailed analysis, the chapter underscores the indispensable role of aeration systems in advancing wastewater treatment processes and promoting environmental sustainability. © 2025 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Article Advancements in Oil-Water Separation: the Role of Molybdenum and Tungsten Disulfide as Cutting-Edge 2D Nanomaterials(Elsevier, 2025) Recepoglu, Yasar Kemal; Goren, Ayseguel YagmurThis article reviews recent strides in synthesizing, functionalizing, and utilizing molybdenum disulfide (MoS2) and tungsten disulfide (WS2) nanomaterials owing to their exceptional wetting properties, which facilitate oilwater separation. Among various materials explored, they have also emerged as particularly promising candidates due to their high surface area, tunable surface chemistry, and unique layered structure. The twodimensional (2D) morphology offers abundant active sites, enhanced interaction with water molecules, and the ability to engineer surface wettability at the nanoscale, all of which are highly advantageous for efficient oilwater separation. Distinct separation mechanisms, performance benchmarks, and potential integration into practical separation setups were meticulously surveyed and analyzed. Furthermore, to elucidate the superiority of MoS2 and WS2 2D nanomaterials over alternative methodologies for oil-water separation, we comprehensively examined other techniques, including membrane processes, electrocoagulation, adsorption with modified materials, and biological methods. For instance, the high membrane, operational, and maintenance costs, scaling, fouling, expensive production steps, high energy consumption, and complex operations are significant limitations of other processes for oil-water separation. On the other hand, the MoS2 and WS2 nanomaterials provide sustainable and effective oil-water separation performance compared to other processes owing to their unique properties, such as superior reusability, high separation efficiency, excellent hydrophobicity (water-repelling) and oleophilicity (oil-attracting) features, significant chemical and thermal stability, and enhanced photocatalytic properties. This review showed that the oil-water separation efficiency of the MoS2 and WS2-based materials was 70-100 %. The highest oil-water separation efficiency of 100 % is observed using cellulose acetate -MoS2 fibrous sponge from a toluene-water mixture at a pH of 8. Nevertheless, while MoS2 and WS2 nanomaterials promise oil-water separation owing to their unique properties, their limitations, such as cost, scalability, environmental concerns, agglomeration, regeneration challenges, and potential toxicity, must be carefully addressed. Consequently, further research and development are necessary to overcome these hurdles and fully realize their potential in practical applications.Book Part Citation - Scopus: 1Antimicrobial Edible Films of Emerging Hydrocolloids Extracted From Food Processing Waste(Elsevier, 2025) Yemenicioğlu, A.; Gözde Seval, S.; Pelin, B.K.; Elif, Ç.; Miray, B.This chapter aims to review recent major developments related to antimicrobial edible packaging based on emerging hydrocolloids extracted from food processing wastes. The chapter consists of antimicrobial packaging examples of the most promising emerging hydrocolloids extracted from processing wastes. The major hydrocolloids discussed include fish and poultry gelatins, mushroom, insect, and snail chitosans, oilseed meal proteins (e.g., proteins from meals of quinoa, flaxseed, hazelnut, cottonseed, sunflower, rapeseed, etc.), citrus alternative pectins (e.g., apple, watermelon, mango, passion fruit, and fig pectins), and nonconventional starches (e.g., banana and taro peel starches, pineapple stem starches, avocado, jackfruit, sugar palm, loquat, and mango seed starches, etc.). A particular emphasis has been put on packaging incorporating natural phenolic antimicrobials that are also mostly extracted from waste. Therefore, a rich content was prepared for those who are interested in developing novel sustainable antimicrobial packaging that contributes to the circular economy and global problems such as climate change and food security. © 2025 Elsevier Inc. All rights reserved.Book Part Developments in Antimicrobial Food Packaging From Zein Incorporating Natural Active Agents(Elsevier, 2025) Yemenicioğlu, A.In this chapter, the current developments in using zein for antimicrobial food packaging have been discussed with particular emphasis on incorporated natural active agents. Although zein could be incorporated with antimicrobial enzymes and peptides, incorporation of phenolic compounds, essential oils, and organic acids into zein packaging have gained a particular interest as these natural antimicrobial agents also help reducing classical brittle nature of zein films. The composites or blends of zein with lipids and fatty acids still maintain their importance as antimicrobial films having sustained release properties. However, recent developments have also addressed different benefits of using zein nanofibers, nanoparticles, and nanoemulsions in packaging. Moreover, zein has also become a promising material to obtain antimicrobial electrospun mats. This chapter discusses not only traditional antimicrobial zein films and coatings, but also recently developed zein-based antimicrobial materials. © 2025 Elsevier Inc. All rights reserved.Article Citation - WoS: 2Citation - Scopus: 3Evaluation of Hydro-Geochemical Processes Controlling Groundwater Quality in Balkh Center (Mazar-e-Sharif) Northern Afghanistan(Elsevier, 2025) Farahmand, Asadullah; Zaryab, Abdulhalim; Ameri, Nasrullah; Ali, Shakir; Eqrar, Mohammad NaimBackground: Groundwater in Afghanistan stands as the predominant water source employed for potable consumption, household utilization, irrigation, and industrial applications. Major cities of Afghanistan are largely dependent on groundwater resources. However, the groundwater quality of major cities in Afghanistan, including Mazar-e-Sharif city was not investigated in detail. Objective: This study aims to conduct a comprehensive analysis of the hydrochemical characteristics of the Mazare-Sharif groundwater, identify the factors influencing groundwater quality, and evaluate the groundwater contamination sources. Methods: A total of 18 groundwater samples were collected during the dry season (June 2020) and analyzed for various physico-chemical parameters. Methods such as multivariate statistical analyses, geochemical modeling, water quality index (WQI), and spatial distribution of groundwater quality were employed to evaluate the hydro-geochemistry of the study area. Results: The results reveal that 1) The prevailing groundwater within the study area is predominantly characterized by Na-(Ca)-HCO3 and Ca-(Mg)-SO4 water types. 2) Physicochemical variables such as NO3-, F-, TDS, and SO42-exceeded the World Health Organization (WHO) safe limits in many wells. 3) Hydro-geochemical processes such as silicate weathering, cation exchange, and gypsum dissolution controls the groundwater chemistry. 4) Cl/ Br ratios reveal, that high salinity may originate from evaporitic lacustrine and evaporite deposits and found to be localized in nature. 5) The Water Quality Index (WQI) classification suggests that approximately 60 % of the groundwater samples fall into poor to very poor water quality categories, highlighting substantial public health concerns. Major contaminants like nitrate and fluoride were found to be higher than the safe limit in nearly half of the samples. Conclusion: The findings of this study hold value for decision-makers in formulating a proficient strategy for the management of groundwater resources in Mazar-e-Sharif City in achieving the UN sustainable goal (SDG) of providing sustainable water for all. Furthermore, new advanced techniques like environmental isotopes should be analyzed to evaluate groundwater hydro-chemical evolution in the future to enhance our understanding.