Article
Engineering, Environmental
Namil Um, Tae-Wan Jeon
Summary: A method for improving the utilization of coal pond ash was proposed in the study, based on investigation of its characteristics and a series of separation experiments. A pretreatment method was developed to categorize the final materials and six additional pretreatment methods were suggested. The applicability of this method to coal pond ash in South Korea was confirmed.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Review
Horticulture
Ricardo A. Lesmes-Vesga, Liliana M. Cano, Mark A. Ritenour, Ali Sarkhosh, Jose X. Chaparro, Lorenzo Rossi
Summary: The Southeastern United States is exploring alternative crops due to agriculture crises, such as the ongoing epidemic of citrus greening disease. Peach production is a promising alternative, but it faces limitations and challenges in the region, including differing climates and edaphic challenges. Utilizing the genetic diversity of the Prunus genus is crucial for the success of peach as an alternative crop, and developing new rootstock cultivars is the most efficient way to overcome these challenges.
Article
Environmental Sciences
Peijia Ku, Martin Tsz-Ki Tsui, Songnian Liu, Kimber B. Corson, Ashley S. Williams, Matthew R. Monteverde, Glenn E. Woerndle, Anne E. Hershey, Parke A. Rublee
Summary: The study found that the impact of the 2014 Dan River coal ash spill on Hg contamination in the river was limited, with Hg pollution in surface sediments and biota largely absent in the first three years after the incident. This suggests that the Hg associated with the coal ash may not be readily available for extensive microbial methylation, providing insights for remediation strategies for similar incidents.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Geography, Physical
Aubrey L. Hillman, Sumar B. Hart, Vann Smith, Sophie Warny
Summary: This study summarizes three lake sediment records from the southeastern United States (SE US) to test the importance of the Pacific North American (PNA) pattern and the North Atlantic Oscillation (NAO) over the last 5000 years. The results indicate relatively stable hydroclimate conditions before historical European settlement, but significant and rapid changes occurred in vegetation and lake hydrologic balance after settlement.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Engineering, Civil
Hui Wang, Tirusew Asefa, Solomon Erkyihun
Summary: This study investigates how climate variabilities in summer and winter precipitation in the Southern United States are modulated by large scale atmospheric activities, including ENSO and ACE. Results show that summer precipitation ratios differ across Florida and the east coast, with some stations showing significant correlations with ACE. Extreme summer precipitation is modulated by geographic terrain and local atmospheric activities.
JOURNAL OF HYDROLOGY
(2021)
Article
Energy & Fuels
Rachel Weinberg, Rachel Coyte, Zhen Wang, Debabrata Das, Avner Vengosh
Summary: Subsurface coal mining and coal combustion have significant environmental and human health impacts. Studies have shown that coal fly ash can be used to neutralize acid mine drainage, but it also poses potential risks to the environment.
Article
Public, Environmental & Occupational Health
Tiffany Chenneville, Kemesha Gabbidon, Campion Zharima, Stefanie Hornschuh, Janan Janine Dietrich
Summary: Emerging evidence confirms the negative impact of COVID-19 on college students' mental health, particularly for female or transgender male students, those with pre-existing mental health conditions, fewer routine activities, and high exposure to COVID-19 news. Daily exercise can help reduce anxiety and post-traumatic stress symptoms in college students, but exercise frequency does not affect emotional responses to COVID-19.
FRONTIERS IN PUBLIC HEALTH
(2023)
Article
Economics
Jimmy Karlsson
Summary: This paper explores the impact of exogenous short-term temperature changes on the U.S. economy, finding significant negative effects of both high and low temperatures on exports. Variations in industry responses to temperature changes suggest different mechanisms at play, highlighting the importance of considering these factors when estimating future economic damages of climate change in the United States.
ENVIRONMENTAL & RESOURCE ECONOMICS
(2021)
Article
Environmental Sciences
Krzysztof Raczynski, Jamie Dyer
Summary: This study quantifies the variability of low flow river conditions in the Southeastern United States using National Water Model (NWM) simulations. The results show diverse spatial and temporal patterns of low flow occurrence, with some locations exhibiting strong seasonal dependence. The study also finds a correlation between low flow occurrence and precipitation patterns.
Article
Thermodynamics
Siqi Liu, Yanqing Niu, Liping Wen, Yaqian Kang, Yufeng Wang, Denghui Wang, Shi'en Hui
Summary: The study focuses on the impact of ash minerals and the mechanisms of ash film and ash dilution on char reactivity during the burnout stage. The research aims to provide detailed data on the variation of ash film fraction with carbon conversion ratio, and integrate it into the kinetic model to predict the behavior of ash minerals during combustion.
COMBUSTION AND FLAME
(2021)
Article
Energy & Fuels
Da Li, Kaixi Jiang, Xunxiong Jiang, Feng Zhao, Shengdong Wang, Linyong Feng, Denggao Zhang
Summary: By optimizing the desilication conditions, the research has successfully increased the alumina-silica mass ratio of coal fly ash, providing an economically viable high-quality raw material for Bayer process applications.
Article
Energy & Fuels
Panpan Xie, Jingjing Liu, Biao Fu, Thomas Newmaster, James C. Hower
Summary: This article investigates the tailings material from the beneficiation of high volatile C bituminous coal and finds that although the concentration of critical elements like rare earths is low, the material has the potential to be an important resource.
Article
Environmental Studies
Ryan Nedd, Aavudai Anandhi
Summary: Land use change analysis is crucial for landscape monitoring, management, and prioritizing conservation practices. This study examined landscape change in the southeastern United States using quantitative data and conducted a literature review to identify significant drivers of land type changes. Results showed substantial changes in forest and agricultural land, with population growth being a major driver of land use change in the region.
Article
Chemistry, Multidisciplinary
Yansong Zhang, Kun Chen, Junjie Yang, Jinshe Chen, Zhichao Pan, Wenxi Shi, Xiangbao Meng, Xinyan Zhang, Min He
Summary: This study prepared a novel micro-mesoporous coal dust explosion suppressant (SGA) to investigate the best composition ratio for suppressing flame propagation during explosions. The results showed that a ratio of 1:7:2 for waste molecular sieve, zirconium dioxide, and (NH4)(2)C2O4 yielded the best suppression performance, with 70 wt % addition of suppressant leading to the loss of explosion expansion ability. Furthermore, a physical and chemical synergistic suppression mechanism was proposed to explain the efficient suppression performance of the suppressant, contributing to the green reuse of waste molecular sieves and providing guarantees for safe production in the coal processing industry.
Article
Critical Care Medicine
Jennifer Richmond, Megan Hollister Murray, Cato M. Milder, Jeffrey D. Blume, Melinda C. Aldrich
Summary: This study identified factors contributing to racial disparities in lung cancer stage of diagnosis among low-income adults. Individual-level and area-level factors were found to be associated with distant stage diagnosis. The predictive power of the model slightly improved when psychosocial factors were considered. Interventions on both structural and individual-level factors are necessary to reduce racial disparities in lung cancer stage at presentation.
Article
Environmental Sciences
Zhen Wang, Anna M. Wade, Daniel D. Richter, Heather M. Stapleton, James M. Kaste, Avner Vengosh
Summary: This study conducted a comprehensive assessment of anthropogenic lead in urban soils near Durham, North Carolina, revealing higher lead concentrations in urban areas co-occurring with other toxic contaminants, while city parks and suburban areas had lower levels more comparable to geological background. Coupled with lead isotopic compositions, the study also traced the sources and potential bioavailability of lead in the soils, providing insights into human exposure risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Review
Environmental Sciences
Avner Vengosh, Rachel M. Coyte, Joel Podgorski, Thomas M. Johnson
Summary: This critical review discusses the key factors that control the concentrations of nuclides in groundwater, including the balance between nuclide mobilization and retention, groundwater residence time, and hydrogeological characteristics. The chemical properties of the nuclides result in varying likelihoods for their co-occurrence in groundwater.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Rachel M. Coyte, Jennifer S. Harkness, Thomas H. Darrah
Summary: As the global population ages and the number of people with musculoskeletal diseases increases, there is a growing interest in understanding and preventing bone-related diseases. This study explores the distribution of trace elements in human bones and their relationship to bone type and diseases such as osteoarthritis and osteoporosis.
Article
Engineering, Environmental
Zhen Wang, Ellen A. Cowan, Keith C. Seramur, Gary S. Dwyer, Jessie C. Wilson, Randall Karcher, Stefanie Brachfeld, Avner Vengosh
Summary: A study reveals that the release of coal ash poses significant risks to water quality and ecological health, yet regulation and monitoring of its impacts remain insufficient.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Energy & Fuels
Rachel Weinberg, Rachel Coyte, Zhen Wang, Debabrata Das, Avner Vengosh
Summary: Subsurface coal mining and coal combustion have significant environmental and human health impacts. Studies have shown that coal fly ash can be used to neutralize acid mine drainage, but it also poses potential risks to the environment.
Review
Environmental Sciences
William H. H. Schlesinger, Emily M. M. Klein, Avner Vengosh
Summary: The direct exploitation and use of arsenic resources has decreased in recent years, but unintentional releases of arsenic from mineral extractions are now ten times greater than the natural rate of rock weathering. Anthropogenic emissions of arsenic to the atmosphere, primarily from smelting activities, are double the natural background sources, leading to increased atmospheric deposition in regions with high mining and industrial activities, with potential consequences for human health, natural ecosystems, and agriculture.
GLOBAL BIOGEOCHEMICAL CYCLES
(2022)
Article
Environmental Sciences
Avner Vengosh, Erika Weinthal
Summary: The installation of rooftop photovoltaic solar energy in the U.S. has the potential to reduce greenhouse gas emissions and water consumption, while also shifting the water footprint to the countries where PV panels are manufactured.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yunyan Ni, Limiao Yao, Jianli Sui, Jianping Chen, Fei Liu, Fei Wang, Guangyou Zhu, Avner Vengosh
Summary: This study investigated the disposal and treatment of shale gas wastewater in central China. The results show that the treatment process can effectively reduce the salt and contaminant levels, and the discharged water meets the safety standards. The study emphasizes the importance of monitoring the water quality of treated wastewater and implementing comprehensive measures to protect public health and the environment.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Editorial Material
Environmental Sciences
Avner Vengosh, Zhen Wang, Gordon Williams, Robert Hill, Rachel Coyte, Gary S. Dwyer
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Zhen Wang, Robert Hill, Gordon Williams, Gary S. Dwyer, Jun Hu, Ewald Schnug, Roland Bol, Yajie Sun, Drew S. Coleman, Xiao-Ming Liu, Michael R. Sandstrom, Avner Vengosh
Summary: Phosphate rock contains important geological and environmental information. This study analyzes the lead isotopic compositions and trace element concentrations of global sedimentary and igneous phosphate rocks to evaluate their geological origin and potential for environmental tracing. The results show that sedimentary phosphate rocks have more radiogenic lead isotopes than igneous rocks, indicating different depositional environments. The lead isotopes and trace element proxies can be used to trace contamination from phosphate rock mining and fertilizer application. Overall, this study provides new data on the geochemistry of phosphate rocks and fertilizers, with implications for both geological and environmental research.
Article
Engineering, Environmental
Zhen Wang, Shifeng Dai, Ellen A. Cowan, Matthew Dietrich, William H. Schlesinger, Qingru Wu, Mingxuan Zhou, Keith C. Seramur, Debabrata Das, Avner Vengosh
Summary: This study investigates the isotopic signatures and output rates of Pb in fly ash disposal in China, India, and the United States. It reveals that the isotopic composition of Pb in fly ash is similar to that of feed coal, allowing for easy tracing of Pb release into the environment. The disposal of Pb from fly ash in these countries has posed a significant environmental burden. Furthermore, coal fly ash contributes more to Pb accumulation than leaded gasoline in freshwater lakes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Editorial Material
Engineering, Environmental
Hang Deng, Daniel Giammar, Wei Li, Avner Vengosh
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Jennifer S. Harkness, Patrick M. McCarthy, Bryant C. Jurgens, Zeno F. Levy
Summary: This study utilizes geochemical modeling and trend analysis to identify changes in dissolved solids and their sources in the Indio subbasin of the Coachella Valley. It concludes that recharged Colorado River water is the primary driver of increasing salinity, while contributions from geothermal waters, wastewater effluent, and agricultural return flow are more localized.
Article
Environmental Sciences
Jinliang Gao, Caineng Zou, Xiaowei Zhang, Wei Guo, Rongze Yu, Yunyan Ni, Dan Liu, Lixia Kang, Yuyang Liu, Andrew Kondash, Avner Vengosh
Summary: This study establishes a comprehensive database of shale gas extraction in China and analyzes the water usage and flowback and produced water production. The findings suggest that shale gas has a relatively low water footprint compared to other conventional energy resources in China. The study also proposes the evaluation of the potential impact of shale gas extraction on water resources in a specific region and the necessity of developing new hydraulic fracturing technologies and exploring alternative management and treatment strategies for produced water.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Environmental Sciences
Jun Hu, Zhen Wang, Gordon D. Z. Williams, Gary S. Dwyer, Luke Gatiboni, Owen W. Duckworth, Avner Vengosh
Summary: This study investigates the accumulation of metal(loid)s originating from phosphate fertilizer in agricultural soils and plants, suggesting that the excessive application of phosphate fertilizers can lead to the accumulation of toxic metal(loid)s, increasing human exposure risks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)