Article
Engineering, Civil
Shane A. White, Isaac R. Santos, Stephen R. Conrad, Christian J. Sanders, Samantha Hessey
Summary: The study investigates the impact of nitrogen leaching and emissions from agricultural systems on waterways, revealing characteristics and importance of N2O emissions. Detailed sampling approaches highlight the significance of episodic rain events as the major drivers of NOX and N2O emissions.
JOURNAL OF HYDROLOGY
(2021)
Article
Engineering, Environmental
Anna Karion, Subhomoy Ghosh, Israel Lopez-Coto, Kimberly Mueller, Sharon Gourdji, Joseph Pitt, James Whetstone
Summary: This study reveals that urban methane emissions in Washington, DC, and Baltimore, Maryland exceed estimates derived from traditional inventory methods. The study shows a decreasing trend in annual emissions over a four-year period and identifies wintertime emissions to be 44% higher than summertime emissions, correlating with natural gas consumption. Spatially resolved estimates attribute a significant portion of methane emissions to the natural gas sector, supporting previous findings. This research contributes to our understanding of urban methane emissions and provides evidence for mitigating natural gas emissions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Agricultural Engineering
Pilli Sridhar, R. D. Tyagi, Puspendu Bhunia, Prangya Ranjan Rout, Tian C. Zhang, Rao Y. Surampalli
Summary: This study examined GHG emissions during ultrasonication and anaerobic digestion processes, finding that positive net energy and reduced GHG emissions can be achieved with low sonication energy and high solids concentration. Additionally, raising the sludge temperature during sonication can decrease energy input and GHG emissions, and further reductions in GHG emissions can be achieved through methane energy recovery during anaerobic digestion.
BIORESOURCE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Maryann R. Sargent, Cody Floerchinger, Kathryn McKain, John Budney, Elaine W. Gottlieb, Lucy R. Hutyra, Joseph Rudek, Steven C. Wofsy
Summary: The top-down study on methane emissions from natural gas in the Boston urban region over 8 years showed no significant trend in the loss rate, with consumption-driven losses potentially accounting for missing emissions in inventories. Comparisons with estimates from six US cities suggest that distribution and end use losses from natural gas supply chain may contribute significantly to total emissions, indicating a need for future policy action.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Green & Sustainable Science & Technology
Mohammed Al-Azzawi, Les Bowtell, Kerry Hancock, Sarah Preston
Summary: In a study conducted with dairy cattle in Australia, the addition of 0.5% powdered activated carbon significantly reduced methane emissions from ruminants and improved milk production, milk protein, and milk fat content. This highlights the potential of using PAC in ruminant diets to mitigate emissions and enhance productivity.
Article
Green & Sustainable Science & Technology
Hamza Pervez, Yousaf Ali, Antonella Petrillo
Summary: Building construction serves important social and economic purposes, but also has negative environmental impacts. The use of off-site modular construction methods can reduce greenhouse gas emissions, but the environmental performance may vary by region, requiring specific assessment. This study in Pakistan shows that modular construction produces significantly lower GHG emissions compared to conventional methods, indicating the need for widespread adoption to reduce environmental impact.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Martina Cattaneo, Carlota Taya, Laura Burgos, Lluis Morey, Joan Noguerol, Giorgio Provolo, Miriam Cerrillo, August Bonmati
Summary: This study aims to evaluate and compare different direct methods for monitoring NH3 and greenhouse gas emissions from different emission sources, and finds that the use of dynamic hoods can improve indirect estimation of emissions.
Article
Meteorology & Atmospheric Sciences
Ceres A. Woolley Maisch, Rebecca E. Fisher, James L. France, David Lowry, Mathias Lanoiselle, Thomas G. Bell, Grant Forster, Alistair J. Manning, Sylvia E. Michel, Alice E. Ramsden, Mingxi Yang, Euan G. Nisbet
Summary: Isotopic measurements of atmospheric methane are crucial for verifying emissions inventories, and long-term records from the UK suggest that the inventories may be underestimating thermogenic/pyrogenic emissions or overestimating biogenic sources, with methane growth and negative isotopic trends observed.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
K. L. Mueller, T. Lauvaux, K. R. Gurney, G. Roest, S. Ghosh, S. M. Gourdji, A. Karion, P. DeCola, J. Whetstone
Summary: An integrated approach combining bottom-up emission data with top-down atmospheric observations has shown promise in tracking progress towards city GHG mitigation goals and providing much-needed assessment of the accuracy of self-reported inventories. Granular emission information can help address multiple issues at the sub-zip code scale, while incorporating atmospheric concentrations within an integrated system can provide rapid feedback on CO2 emissions anomalies and reveal important behavioral and economic relationships.
ENVIRONMENTAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
Carlos C. V. Garcia, Jose C. B. Dubeux, Xavier Martini, Derick Conover, Erick R. S. Santos, Bruno G. C. Homem, Martin Ruiz-Moreno, Izabela A. G. da Silva, Daciele S. Abreu, Luana M. D. Queiroz, Flavia O. S. van Cleef, Mercia V. F. Santos, Giselle G. M. Fracetto
Summary: This study evaluated the effects of different species of dung beetles on nitrous oxide (N2O) emission, ammonia volatilization, and the performance of pearl millet [Pennisetum glaucum (L.)]. The results showed that dung beetle species had a significant impact on N2O emission and ammonia volatilization. Dung application also affected the production of pearl millet.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Mariusz Niekurzak
Summary: The production of biodiesel plays a crucial role in sustainable development by reducing emissions and consumption of fossil fuels through the use of renewable raw materials. New technologies show potential for a green economy and carbon neutrality in the biofuels sector, with biodiesel combustion releasing lower gas components compared to diesel oil. The biodegradation rate of biodiesel in the environment is five times faster than that of diesel oil, highlighting its environmental benefits.
Article
Environmental Sciences
Kimberley A. Taylor, David Risk, James P. Williams, Grant D. Wach, Owen A. Sherwood
Summary: This study investigated the presence of methane in groundwater in the Stellarton Basin, Nova Scotia, Canada, finding that the majority of methane is of microbial origin, with some trace thermogenic gas likely originating from coal mines in the area. The data obtained in this study may be used as baseline information for future coal-bed methane operations in the region.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Guohua Chang, Hao Liu, Zhuoxin Yin, Jinxiang Wang, Kaiming Li, Tianpeng Gao
Summary: In the context of China's commitment to the double carbon goal, promoting agricultural carbon emission reduction is currently an important research topic. Assessing the carbon sequestration level of crops has a positive impact on enhancing agricultural carbon sinks and reducing carbon emissions. The carbon budget analysis in the Jinchang arid oasis of northwest China showed that increasing the proportion of the area planted with corn was beneficial in enhancing regional carbon sequestration, and chemical fertilizer and agricultural film were the main carbon sources.
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
Green & Sustainable Science & Technology
Fritz T. C. Ronen, Nikolas Schone, Uwe Bau, Markus A. Reuter, Manuel Dahmen, Andre Bardow
Summary: This study explores the potential of using Power-to-Hydrogen technology to reduce carbon emissions in copper production, and analyzes the implementation costs and benefits under the current techno-economic conditions in Germany. The results show that with future technological developments and increasing greenhouse gas emission certificate prices, the application of Power-to-Hydrogen technology in copper production may become more cost-effective and environmentally beneficial.
JOURNAL OF CLEANER PRODUCTION
(2021)