Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection

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  • Review
    Citation - WoS: 60
    Citation - Scopus: 66
    A Comprehensive Review on Environmental and Economic Impacts of Hydrogen Production From Traditional and Cleaner Resources
    (Elsevier Sci Ltd, 2023) Goren, A. Yagmur; Dincer, Ibrahim; Khalvati, Ali; Gören, Ayşegül Yağmur; Dinçer, İbrahim
    This review paper considered the potential hydrogen (H2) production methods using conventional fossil fuels and in a cleaner manner with biomass and water resources and evaluated them for economic sustainability, environmental impact, and energy efficiency. The study results revealed that the methods of biomass-based hydrogen production (e.g., photo-fermentation (PF), dark fermentation (DF), and microbial electrolysis cell (MEC)), by energy source, appear to more environmentally friendly than the other evaluated methods in terms of emissions since they offer the potential to significantly reduce CO2 releases when their substrates are derived from renewable resources or wastes. Among the biomass-based processes, the PF is the most environmentally friendly H2 production process, presenting a low global warming potential (GWP) value of 1.88 kgCO2 eq./kgH2 and acidification potential (AP) of 0.003 gSO2/kgH2, it is followed by DF and MEC processes. On the other hand, the highest GWP of 19.85 kgCO2 eq./kgH2 and AP 0.139 kgSO2/kg H2 were obtained for the fossil fuel-based gasification process related to coal mining and transportation operations. Although hydrogen production processes seem to consume high amounts of water sources, such as about 9 kg of water consumed for 1 kg of hydrogen produced during conventional electrolysis, the reality is that in the hydrogen ecosystem the water footprint of the process is reduced drastically where hydrogen is employed as fuel in fuel cell systems and converted back to water while generating electricity. So, the hydrogen ecosystem may diligently be recognized as the water conserving cycle. On the other hand, the study results showed that commercially available fossil fuel based (e.g., coal) gasification and steam-methane reforming processes are more advantageous over other lab scale technologies in terms of cost and process efficiency. Nevertheless, rising carbon costs may reduce the reasonable price of fossil-based H2 and promote the cost-competitiveness of biomass-based renewable H2. Overall ranking results also proved that biomass-based H2 production processes are primarily promising options for H2 production in an environmentally friendly and moderately cost-effective way.
  • Conference Object
    Individual Adaptation Determinants and Themes for Environmental Resilience
    (IEEE, 2022) Kaplan, Gizem; Çorbacıoğlu, Eda; Başoğlu, Ahmet Nuri
    It is now an accepted fact that climate change is an event with increasing consequences and that we humans must do something about it. At this stage, the adaptation of individuals plays a key role. In this study, we searched for various behavioral theories and variables for our future study. With an S-question in-depth interview (7 people for sample size) and a survey of 68 actions (77 people for sample size), we investigated what subjects people tend to make changes in their daily lives. As a result, it has emerged that the tendency is to change the vehicles used in transportation. And the majority of the participants think that the partners who need to take action regarding the climate crisis are the service providers (states, NGOs, industry, and companies) rather than the consumers (individuals).