Review
Green & Sustainable Science & Technology
Adeola Akinpelu, Md Shafiul Alam, Md Shafiullah, Syed Masiur Rahman, Fahad Saleh Al-Ismail
Summary: The growth of population, gross domestic product (GDP), and urbanization in Saudi Arabia has led to an increase in greenhouse gas (GHG) emissions, with electricity generation, road transportation, cement, chemicals, refinery, iron, and steel being the main sectors emitting GHGs. However, Saudi Arabia aims to achieve net zero GHG emissions by 2060 and is working on establishing a circular carbon economy (CCE) framework with hydrogen playing a key role. The article critically reviews the current GHG emission dynamics and explores the role of hydrogen in reducing emissions, providing helpful discussions and recommendations for mitigation measures and technologies.
Article
Green & Sustainable Science & Technology
Sebastian Kolb, Jakob Muller, Natalia Luna-Jaspe, Jurgen Karl
Summary: Hydrogen imports are seen as a promising solution for the decarbonization of the German energy system. This study compares the environmental performance of liquefied hydrogen imports from Chile, Canada, and Morocco, and shows that renewable hydrogen imports can outperform domestic production in certain cases.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Green & Sustainable Science & Technology
Fengsheng Chien, Ching-Chi Hsu, Ilhan Ozturk, Arshian Sharif, Muhammad Sadiq
Summary: This paper investigates the impact of clean energy, urbanization, and economic growth on greenhouse gas emissions in ten Asian States from 1995 to 2018 using a cross-sectional autoregressive distributed lagged (CS-ARDL) model. The study finds that clean energy and GDP(2) play a constructive role in reducing GHG emissions, while urbanization and economic growth contribute to increased emissions. The findings have policy implications for energy economics and environmental sustainability.
Article
Chemistry, Multidisciplinary
Cong Wang, Sagar Sourav, Kewei Yu, Yeonsu Kwak, Weiqing Zheng, Dionisios G. Vlachos
Summary: This study focuses on the decarbonization of Syngas production through the electrification of dry reforming of methane. By selectively coupling microwave radiation to metal-free doped ceria catalysts, excellent performance is achieved. The insights gained from this study can guide the design of catalysts and process intensification for carbon-free syngas production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Cong Wang, Sagar Sourav, Kewei Yu, Yeonsu Kwak, Weiqing Zheng, Dionisios G. Vlachos
Summary: This study successfully electrifies the dry reforming of methane using metal-free doped ceria catalysts and microwave radiation, providing new insights and methods for carbon-free syngas production.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Cody E. Finke, Hugo F. Leandri, Evody Tshijik Karumb, David Zheng, Michael R. Hoffmann, Neil A. Fromer
Summary: The article discusses the current status and challenges of hydrogen production, analyzing and comparing hydrogen production processes and economic conditions, proposing standards and chemical reactions for clean hydrogen production, and considering economic analysis as crucial for near-term CO2 emissions reductions.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Environmental Sciences
Jasmin Cooper, Luke Dubey, Semra Bakkaloglu, Adam Hawkes
Summary: This study estimates the emissions of H-2 supply chains for the first time and finds that the emission rates are comparable to methane emissions from natural gas supply, but the impact on global warming is much lower. The study highlights the critical importance of establishing mobile H-2 emission monitoring and reducing the uncertainty of H-2 climate forcing.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Tyler J. Lark, Nathan P. Hendricks, Aaron Smith, Nicholas Pates, Seth A. Spawn-Lee, Matthew Bougie, Eric G. Booth, Christopher J. Kucharik, Holly K. Gibbs
Summary: This study evaluates the realized effects of the Renewable Fuel Standard (RFS) in the United States through econometric analyses, land use observations, and biophysical models. The findings show that the RFS policy increased corn and crop prices, expanded corn cultivation and cropland, raised fertilizer use and water quality degradants, and resulted in higher carbon intensity of corn ethanol compared to gasoline. These tradeoffs need to be considered when making decisions about renewable energy policies and the role of corn ethanol in climate mitigation goals.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Geosciences, Multidisciplinary
Alison R. Marklein, Deanne Meyer, Marc L. Fischer, Seongeun Jeong, Talha Rafiq, Michelle Carr, Francesca M. Hopkins
Summary: This study developed a spatially explicit database of dairies in California, calculating CH4 emissions based on operating permits and California-specific reports, and estimated the impact of mitigation strategies. The results show that implementing digesters at existing or planned 106 dairies in California will significantly reduce CH4 emissions.
EARTH SYSTEM SCIENCE DATA
(2021)
Review
Green & Sustainable Science & Technology
Shashank Reddy Patlolla, Kyle Katsu, Amir Sharafian, Kevin Wei, Omar E. Herrera, Walter Merida
Summary: Clean hydrogen produced by methane pyrolysis technology can help reduce greenhouse gas emissions and meet the increasing global energy demand. This study evaluates the recent developments in methane pyrolysis technologies, including alternative energy transfer methods and different reactor designs. The analysis indicates that there are challenges in high-temperature and high-pressure operation, as well as corrosive reaction environments, which require further research and investment in reactor design and fabrication solutions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Chemistry, Physical
Hope M. Wikoff, Samantha B. Reese, Matthew O. Reese
Summary: This study evaluates the impact of two dominant photovoltaic technologies on global decarbonization goals and finds that increasing the deployment of thin-film PV and changing the manufacturing grid mix can contribute to achieving these goals.
Article
Energy & Fuels
Oivind Andersson, Pal Borjesson
Summary: The study showed that using renewable fuels can reduce the life-cycle greenhouse gas emissions of vehicles more effectively than a low carbon electricity mix. Plug-in hybrid vehicles may be more beneficial in achieving more ambitious climate goals for the automotive sector compared to battery-electric vehicles. Current climate policy instruments are inadequate in minimizing the climate impact of the automotive sector.
Article
Energy & Fuels
Saulius Baskutis, Jolanta Baskutiene, Valentinas Navickas, Yuriy Bilan, Wojciech Cieglinski
Summary: Climate change, limited energy sources, energy price volatility and supply constraints have made environmental pollution, energy supply, and security major global issues. Key factors for sustainable energy development include energy availability, efficiency, and transitioning to renewable sources. Lithuania has taken proactive measures to promote renewable energy use, aiming to increase energy efficiency and reduce dependence on imports for a sustainable future.
Article
Multidisciplinary Sciences
Wyatt Thompson, Hoa Hoang, Jarrett Whistance, Robert Johansson
Summary: In this study, the potential for publication bias is explored through market simulation results estimating the impact of US ethanol expansion on corn prices. A new test is provided to determine whether market simulation results are biased towards food-versus-fuel or GHG narratives. The findings do not detect a relationship between narrative orientation and corn price effects, and the approach can inform the publication bias literature.
Article
Energy & Fuels
Ahmed M. Al-Orabi, Mohamed G. Osman, Bishoy E. Sedhom
Summary: Global GHG emissions, driven by fuel and industrial emissions, continue to rise. Africa has abundant sustainable energy resources to meet its electricity needs, which is crucial for economic growth and global CO2 reduction goals. Among various energy technologies, green hydrogen is considered a promising medium for storing renewable energy and fuel. The study evaluated different configurations and found that Configuration B in Ras Ghareb had the lowest NPV, COE, and LCOH. Configuration D had the highest CO2 emissions, while Configuration E had the highest CO2 output.