Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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Access Right: Closed AccessSubject: search.filters.subject.Hydrogen Production

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  • Article
    The West Coast Geothermal Province: Insights from Geochemical and Geophysical Exploration for Green Hydrogen Development
    (Geological Society of India, 2025) Deshmukh, V.; Subba Rao, P.B.V.; Chandrasekharam, D.; Sathishkumar, S.; Srinivas, Y.; Chandrasekhar, V.
    The West Coast Geothermal Province (WCGP), located along India’s western margin, hosts 60 thermal springs with temperatures ranging from 33 to 70°C, classifying it as a low-enthalpy geothermal system. Geochemical analyses suggest that meteoric water percolates through granitic basement rocks, gaining heat from radioactive decay and geothermal gradients. Geophysical investigations have identified shallow geothermal reservoirs and fault/fracture zones that facilitate the upward movement of deep-seated hot water to the surface. Although traditionally overlooked for power generation, low-enthalpy geothermal systems are gaining attention due to technological advancements and the growing demand for sustainable energy solutions such as green hydrogen. Reservoirs with temperatures between 150 to 180°C have the potential to generate 3–5 MWe of off-grid electricity using thermoelectric generators, supporting applications like water desalination and hydrogen production. This study evaluates the potential of WCGP’s low-enthalpy geothermal resources for green hydrogen production, with a focus on both technical and economic aspects. Key technical parameters include reservoir temperature, power generation capacity, and system integration. Economic considerations encompass the Levelized Cost of Energy (LCOE), capital expenditures (CAPEX), operational expenditures (OPEX), and hydrogen production costs. By comparing geothermal hydrogen production with other energy sources, this research assesses its viability and competitiveness within the broader renewable energy landscape. © 2025 Elsevier B.V., All rights reserved.
  • Article
    Citation - WoS: 3
    Citation - Scopus: 7
    A Comprehensive Life Cycle Impact Evaluation of Hydrogen Production Processes for Cleaner Applications
    (Pergamon-elsevier Science Ltd, 2025) Goren, A. Yagmur; Dincer, Ibrahim; Khalvati, Ali
    The worldwide energy demands have greatly increased with urbanization and population growth. Air pollution, acid rain, greenhouse gas emissions, global warming originating from CO2 emissions, depletion of energy supplies, and environmental degradation resulting from climate change are all consequences of using non-renewable fossil fuel-based energy infrastructure. To minimize emissions, renewable energy-based alternative energy sources must be investigated. In this regard, hydrogen (H2) has emerged as a promising fuel to meet energy requirements, and green H2 production with net-zero emissions has gained significant interest in recent years. Therefore, this study uses the life cycle assessment approach to evaluate the atmospheric emissions and environmental impact parameters of the gasification, electrolysis, and dark fermentation-microbial electrolysis hybrid process and assess their sustainability levels, considering the sustainable development goals. Among the studied H2 production processes, the maximum CO2 emission originates from the coal gasification process, accounting for 18.6 kg-CO2/kg-H2, while the alkaline electrolysis process provides the lowest total CO2 emission of 6.39 kg-CO2/kg-H2. Furthermore, the biological-based dark fermentation-microbial electrolysis cell process is a promising option owing to its highest negative biogenic CO2 emission of -68.69 kg-CO2/kg-H2. The environmental impact parameters of the studied processes are calculated considering the emissions, and the highest global warming potential of 21.75 kgCO2-eq./kg-H2 is obtained for the coal gasification process, considering the life cycle assessment coefficients. Overall, the lowest atmospheric emissions and environmental impacts are obtained for the electrolysis process. Consequently, these results revealed that switching from the fossil fuel resources used in the conventional H2 production methods to fully sustainable sources, such as renewables, can make energy production methods entirely sustainable from an environmental point of view.
  • Review
    Citation - WoS: 26
    Citation - Scopus: 28
    Exploring Geothermal Energy Based Systems: Review From Basics To Smart Systems
    (Pergamon-elsevier Science Ltd, 2025) Anya, Belka; Mohammadpourfard, Mousa; Akkurt, Gulden Gokcen; Mohammadi-Ivatloo, Behnam
    Most of the energy demand is currently supplied from fossil fuels, which leads to the accumulation of greenhouse gases and air pollution. A sustainable future can be created globally through the efficient use of renewable energy sources. These sources include wind, solar, geothermal, biomass, and more. Geothermal energy can meet the energy needs of the future as a clean and reliable source and stands out due to certain distinctive features among renewable energy sources. Unlike other renewable energy sources, geothermal energy is not dependent on time or weather, making it a reliable and continuous energy supply. Additionally, it has a lower environmental impact. This review examines the development of geothermal energy systems and their integration into smart technologies, highlighting the potential of geothermal energy for smart energy systems. The focus is on integrating smart systems into geothermal-based setups to enhance efficiency and analyze the state-of-the-art technologies of such systems. Geothermal-based systems can be classified as single generation, co-generation, multigeneration, smart energy systems, and energy hubs. Consequent to examining systems, it has been concluded that geothermal systems have a huge potential, but unfortunately, not all of them are used due to some difficulties. Its development will occur faster, and its share in the renewable energy sector will grow with smart system integration.