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ACS ES&T air 2025年第2期2卷 226-235页

作者： Duncan Quevedo Khanh Do George Delic José Rodríguez-Borbón Bryan M Wong Cesunica E Ivey Department of Civil and Environmental Engineering University of California Berkeley California 94720 United States. Department of Chemical and Environmental Engineering University of California Riverside California 92557 United States. Center for Environmental Research and Technology Riverside California 92507 United States. Hiperism Consulting LLC Chapel Hill North Carolina 27514 United States. Department of Chemistry Department of Physics & Astronomy and Material Science & Engineering Program University of California Riverside California 92557 United States.

The Community Multiscale Air Quality (CMAQ) model simulates atmospheric phenomena, including advection, diffusion, gas-phase chemistry, aerosol physics and chemistry, and cloud processes. Gas-phase chemistry is often a major computational bottleneck due to its representation as large systems of coupled nonlinear stiff differential equations. We leverage the parallel computational performance of graphics processing unit (GPU) hardware to accelerate the numerical integration of these systems in CMAQ's CHEM module. Our implementation, dubbed CMAQ-CUDA, in reference to its use in the Compute Unified Device Architecture (CUDA) general purpose GPU (GPGPU) computing solution, migrates CMAQ's Rosenbrock solver from Fortran to CUDA Fortran. CMAQ-CUDA accelerates the Rosenbrock solver such that simulations using the chemical mechanisms RACM2, CB6R5, and SAPRC07 require only 51%, 50%, or 35% as much time, respectively, as CMAQv5.4 to complete a chemistry time step. Our results demonstrate that CMAQ is amenable to GPU acceleration and highlight a novel Rosenbrock solver implementation for reducing the computational burden imposed by the CHEM module.

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The fate of antibiotics during phosphate recovery processes - A critical review

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Science of the Total Environment 2025年 968卷 178829页

作者： Bolujoko, Nathaniel Duling, Addison Shashvatt, Utsav Mangalgiri, Kiranmayi Environmental Science Graduate Program Oklahoma State University 202 Whitehurst StillwaterOK74078 United States Department of Biosystems and Agricultural Engineering Oklahoma State University 215A Agricultural Hall StillwaterOK74078 United States Department of Civil and Environmental Engineering University of California Berkeley 760 Davis Hall BerkeleyCA94720 United States

The principles of circular economy encourage the recovery of phosphorus from nutrient-rich waste streams such as animal manure, domestic wastewater, and urine to supplement existing sources of raw phosphorus. However, these waste streams also contain a wide variety of contaminants of emerging concern including antibiotics, and the recovery of phosphorus from these waste streams results in the co-occurrence of antibiotics with the recovered phosphorus products. This paper provides a comprehensive overview of the fate of environmentally relevant antibiotics in three major existing and upcoming phosphorus recovery processes: precipitation-, membrane-, and adsorption-based treatment. In general, the co-occurrence of antibiotics in recovered phosphorus increases with the presence of dissolved organic matter (DOM) and cations due to π-π interaction and cationic bridge formation, respectively. Additionally, antibiotics display pH-based speciation resulting in electrostatic interactions with recovered phosphorus at pH > 7.0. Furthermore, this critical review establishes a new metric, the relative antibiotic-to‑phosphorus (RAP), defined as the ratio of the concentration of antibiotics to phosphorus in recovered phosphorus to that of the phosphorus-rich waste. Precipitation-based methods, particularly struvite, demonstrated the lowest RAP, while the RAP in carbon-based adsorbents was 1.8 × 108 times higher than in membrane-based processes. In reviewing literature on the fate of antibiotics in phosphorus recovery processes, several research needs are also highlighted: the fate of non-tetracycline antibiotics, simultaneous investigation of phosphorus and antibiotic fate in membrane- and adsorption-based methods, treatment methods to mitigate the co-occurrence of antibiotics in recovered phosphorus product, and the release of antibiotics from recovered phosphate products. © 2024

关键词： Rivers

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Spatial analysis and predictive modeling framework of truck parking and idling impacts on environmental justice communities

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Journal of Transport Geography 2025年 127卷

作者： Xiao, Runhua Ivan Jaller, Miguel Department of Civil and Environmental Engineering University of California One Shields Ave Ghausi Hall 1013 Davis 95616 CA United States Department of Civil and Environmental Engineering Sustainable Freight Research Program Institute of Transportation Studies University of California One Shields Ave Ghausi Hall 3143 Davis 95616 CA United States

This study introduces a comprehensive modeling framework to analyze truck idling and parking activities, illustrated through a case study in environmental justice communities in Kern County, California. It includes 1) exploratory spatial and cluster analysis to identify hotspots of those truck activities and their influencing factors, and 2) advanced predictive models, particularly the Cross-Validated Random Forests model, to predict and investigate critical factors influencing truck idling time, parking search time, and inferred truck parking demand. The results reveal that the percentage of heavy-duty trucks and the specific land use influence truck idling time. For parking search time, key predictors include distance to major roads and employment in certain industries. The inferred truck parking demand model underscores the impact of commercial land use areas, proximity to major roads, and socioeconomic factors. These findings enable the identification of hotspots for truck idling and parking searches, facilitating targeted interventions such as optimizing land use planning, improving infrastructure around major roads, and enhancing parking facilities in commercial zones. Integrating spatial, socioeconomic, and GPS aggregate data, the methodology provides a scalable framework applicable to other regions facing similar challenges through data-driven planning and policy initiatives. © 2024

关键词： Air pollution environmental justice communities Freight transportation planning Parking search Predictive modeling Truck idling

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Navigating Legal Frameworks for National Resilience: A Comparative Analysis of Key Disaster Management Laws in Thailand and Japan

Navigating Legal Frameworks for National Resilience: A Compa...

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First International Symposium on Instrumentation, Control, Artificial Intelligence, and Robotics (ICA-SYMP)

作者： Ampan Laosunthara Ratchaneekorn Thongthip Kodchakorn Krutphong School of Environment and Society Institute of Science Tokyo Tokyo Japan Department of Civil & Infrastructure Engineering Disaster Preparedness Mitigation and Management School of Engineering and Technology Asian Institute of Technology (AIT) Pathumthani Thailand Environmental Engineering and Disaster Management Program Mahidol University Kanchanaburi Thailand

ISBN: (数字)9798331505400

ISBN: (纸本)9798331505417

This study compares the disaster management laws of Thailand and Japan. The research reveals significant differences in legislative approaches, reflecting each country's unique historical, and governance contexts. Japan's law demonstrates a more comprehensive approach to the disaster management cycle and stakeholder involvement, with integrated financial provisions. Thailand's law emphasizes organizational aspects. Both prioritize response measures but show potential gaps in addressing preparedness and mitigation phases. The study identifies areas for further investigation, including financial measures, and international cooperation approaches. This comparative analysis offers valuable insights into both countries' ongoing development of disaster management systems and highlights potential areas for mutual learning and improvement in disaster risk reduction strategies. Creating resilience in the society through the core of the government working and stakeholders' given authorities.

关键词： Phase measurement Law Prevention and mitigation Disasters Area measurement Legislation Frequency measurement Stakeholders Robots Resilience

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Anticancer drugs alter active nitrogen-cycling communities with effects on the nitrogen removal efficiency of a continuous-flow aerobic granular sludge system

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Chemosphere 2025年 376卷 144279页

作者： Castellano-Hinojosa, Antonio Gallardo-Altamirano, Manuel J. Santo Svierzoski, Nicoly Dal Pozo, Clementina González-López, Jesús González-Martínez, Alejandro Environmental Microbiology Group Institute of Water Research University of Granada Granada18003 Spain Department of Microbiology University of Granada Granada18071 Spain Civil Engineering Program COPPE Federal University of Rio de Janeiro Rio de Janeiro Brazil

There is increasing awareness of the presence of anticancer drugs (ACDs) in wastewater. Nonetheless, how ACDs affect the performance of wastewater treatment systems and their microbial populations remains largely unclear. This study investigated the effects of three common ACDs (cyclophosphamide, tamoxifen, and methotrexate) at varying concentrations on physicochemical parameters and drug removal efficiency in an aerobic granular sludge (AGS) system operated in a continuous-flow reactor. Additionally, it examined the abundance of active microbial communities, including nitrifiers (amoA gene from ammonia-oxidizing bacteria and archaea) and denitrifiers (napA, narG, nirK, nirS, nosZ genes), as well as the biodiversity of active prokaryotic communities. The concentration level of ACDs determines variations in biomass density, granule integrity, and removal efficiencies of organic matter (OM) and total nitrogen. Both medium and high ACD concentrations negatively impact these physicochemical parameters. The findings revealed that AGS functioning within a continuous system could help remove ACDs, but removal efficiencies depended on the specific drug and concentration applied. At medium and high ACD concentrations a marked reduction in the abundance of active bacterial and archaeal communities, including nitrifiers and denitrifiers, was observed, alongside a decline in microbial diversity and a transformation in community composition. Specific bacterial genera, which are crucial for OM degradation, nitrification and denitrification were identified as particularly sensitive to anticancer drugs. Our findings highlight the need for monitoring and managing anticancer drugs in wastewater systems, as they can substantially alter treatment performance, nitrogen-cycling communities, and bacterial community composition. © 2025 Elsevier Ltd

关键词： Cytotoxic Denitrification Granular Microbial abundance Nitrification Wastewater

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Mechanisms of change in accelerated carbonation progress in cement paste under different relative humidity conditions

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Cement and Concrete Research 2025年 195卷

作者： Cheng, Luge Kurihara, Ryo Ohkubo, Takahiro Kitagaki, Ryoma Teramoto, Atsushi Suda, Yuya Maruyama, Ippei Department of Architecture of Engineering The University of Tokyo Tokyo113-8656 Japan Department of Applied Chemistry and Biotechnology of Engineering Chiba University Chiba263-8522 Japan Division of Human Environmental Systems of Engineering Hokkaido University Sapporo060-8628 Japan Department of Architecture of Advanced Science and Engineering Hiroshima University Hiroshima739-8527 Japan Civil Engineering Program Faculty of Engineering University of the Ryukyus Okinawa903-0213 Japan

This study investigated the evolution of water content and carbonation in OPC cement paste under low, intermediate, and high relative humidity (RH) conditions, emphasizing the role of water in accelerated carbonation and microstructural modifications. Under high RH, the carbonation suppressed after 28 days owing to calcium ion accumulation at the surface, precipitating as calcite. This calcite formation leads to a dense calcium carbonate layer, reducing the gas–liquid interfacial area for CO₂ dissolution and blocking further water evaporation and carbonation process. Low RH conditions cause the agglomeration of calcium silicate aluminate hydrate (C–(A)–S–H), increasing empty space in the microstructure. This facilitates CO₂ penetration but limits CH carbonation due to insufficient water availability. These findings highlight the significance of water distribution and microstructural evolution in CO₂ sequestration, revealing that RH critically influences the progress of carbonation by altering the pore structure and subsequent water availability in cementitious materials. © 2025 The Authors

关键词： Carbonation

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Health risk assessment of physicochemical and heavy metals exposures of the usage of shallow groundwater located at the proximity to Citarum River, Indonesia

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Case Studies in Chemical and environmental engineering 2025年 11卷

作者： Salami, Indah Rachmatiah Siti Thufailah, Nadya Aulia Fahimah, Nurul Roosmini, Dwina Environmental Management Technology Research Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Jalan Ganesa no. 10 Bandung 40132 Indonesia Environmental Engineering Master Program Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Jalan Ganesa no. 10 Bandung 40132 Indonesia Center for Environmental Studies Institut Teknologi Bandung Jalan Sangkuriang no. 42A Bandung Indonesia Research Center for Environmental and Clean Technology National Research and Innovation Agency Indonesian (BRIN) KST Samaun Samadikun Jl Sangkuriang No. 21 West Java Bandung 40135 Indonesia

Shallow groundwater is commonly used for daily needs in Indonesia, and the water quality is affected by surrounding land uses with anthropogenic activities. The study aimed to evaluate shallow groundwater quality and public health risks. 51 groundwater samples located <150 m from the river were collected from agriculture, industrial, and domestic areas along the Upper Citarum River, supporting millions of people's activities. Physicochemical, heavy metals and microbiological parameters were measured. Water quality was compared to the government standards, and the statistical correlation and Principal Component Analysis were used to analyze the potential sources. The health risk was estimated using the Hazard Quotient, Hazard Index, and Excess Cancer Risks approach. The results showed that some heavy metals contaminated shallow groundwater were the dominant source of health risk. Pb concentration has statistically inversely correlated with distance from the river. Non-carcinogenic risk of children is higher than that in adults, with the rank of agriculture > industrial > domestic regions, and only suitable for dermal exposure. Meanwhile, the carcinogenic risk is unacceptable for both dermal and oral intakes and risk in agriculture > industrial > domestic areas. Higher distance from the river shows decreasing risk values, and the estimated safe distance from the river follows the sequences of industrial > agriculture > domestic area affected by the hydrogeological condition and flooding prone in industrial areas. These findings underscore the potential impact on public health and the urgency of addressing this issue through pollution source prevention, buffer-safe distance management, and education for the public. © 2025 The Authors

关键词： Agricultural ECR Groundwater distance to river HI Industrial Land uses Residential areas Shallow wells

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Evaluating particulate matter mass and count concentrations in a vehicle cabin: Insights from Kuwait City

Journal of Engineering Research (Kuwait)

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Journal of engineering Research (Kuwait) 2025年

作者： Al-Dabbous, Abdullah N. Goel, Anju Alsulaili, Abdalrahman Al-Dabbous, Shoug Kh. Shalash, Musaed Environmental and Climate Change Program Environment & Life Sciences Research Center Kuwait Institute for Scientific Research Kuwait The Energy and Resources Institute New Delhi India Civil Engineering Department College of Engineering and Petroleum Kuwait University Kuwait

Inhaling quality air is crucial for good health. Therefore, investigating air quality in various microenvironments, especially indoors where people spend most of their time, is essential. This study examines particulate matter (PM) concentrations in a vehicle cabin over one week in September, representing late summertime conditions. It focuses on measuring PM mass and count across various size ranges (0.3–0.5, 0.5–1.0, 1.0–2.5, 2.5–5.0, 5.0–10.0, 10.0–25.0 μm) under different ventilation settings in a private vehicle on one of Kuwait's busiest highways. Thirty-five runs were conducted across five ventilation settings over seven days. These settings included combinations of AC fan speeds, recirculation status, window positions (open and closed), and smoking activities. No significant trends were observed between weekends and weekdays due to minimal traffic differences. However, distinct PM mass and count concentration variations were noted across ventilation settings. Setting 5 (AC at medium fan speed, vent and windows closed, smoking allowed) had the highest PM mass and count concentrations in smaller sizes (diameter ≤2.5 μm) due to active smoking. Setting 1 (AC off, vent and windows open, no smoking) recorded the second-highest PM mass (diameter ≥2.5 μm) and count (diameter ≤2.5 μm) concentrations due to outdoor pollution. PM mass and count concentrations were lowest under settings 2–4, with negligible differences between them, attributed to the relative restriction of air intake. The highest exposure levels were observed in setting 1, where windows were open, and the lowest in settings with closed windows and AC in recirculation mode. Exposure levels at hotspots were up to 200 % higher. Proximity to construction activities further increased exposure. © 2025 The Authors

关键词： Kuwait Particulate matter Smoking Vehicle cabin Ventilation settings

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Increasing risk of oppressive heatwaves over India in the future warming

arXiv

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arXiv 2025年

作者： Sudharsan, Naveen Singh, Jitendra Ghosh, Subimal Karmakar, Subhankar Environmental Science and Engineering Department Indian Institute of Technology Maharashtra Bombay India Department of Environmental Systems Science ETH Zürich Zürich Switzerland Department of Civil Engineering Indian Institute of Technology Maharashtra Bombay India Interdisciplinary Program in Climate Studies Indian Institute of Technology Maharashtra Bombay India Centre for Urban Science & Engineering Indian Institute of Technology Maharashtra Bombay India

The frequency of heatwave events has been increasing with climate change across the globe, causing devastating impacts on human and natural systems. Particularly, the co-occurrence of high temperature with high humidity has the potential of worse impacts on human health than extreme temperature alone. We use observations to examine the characteristics of extreme (high temperature and low humidity) and oppressive (high temperature and high humidity) heatwaves and their impacts on human mortality. We also use climate model simulations to understand the likelihood of heatwaves under varied warming conditions in future climates. We find an increasing trend in the number of days of extreme and oppressive heatwaves, with surprisingly a higher rate of increase in oppressive heatwaves. We also observe a higher correlation between oppressive heatwaves and historical heat-stress-related human deaths than extreme heatwaves, indicating more substantial impacts of oppressive heatwaves on the human population than extreme heatwaves. Further, our results show a five-fold increase in the number of days of oppressive heatwaves under 1.5°warming in both mid (2035-2065) and end (2070- 2100) of the 21st century, relative to the historical period (1975 to 2005) whereas the number of extreme heatwave days remains relatively constant in mid and end of this century. Remarkably, 2°warming results in an eight-fold and almost two-fold increase in the number of days of oppressive heatwaves by the end of the century relative to the historical period and 1.5°warming conditions. These results suggest that limiting the mean global warming to 1.5°can reduce the likelihood of oppressive and extreme heatwaves by 44% and 25% by the end of the century relative to the 2°warming world. Moreover, the remarkable increase in oppressive heatwave days highlights the elevated risk of heatwaves over densely populated countries and indicates an imminent need for adaptation measures. © 2025, CC BY.

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Incorporating ethics education into an electrical and computer engineering undergraduate program 125

Incorporating ethics education into an electrical and comput...

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125th ASEE Annual Conference and Exposition

作者： Ghorbani, Mahsa Maciejewski, Anthony A. Siller, Thomas J. Chong, Edwin K.P. Omur-Ozbek, Pinar Atadero, Rebecca A. Colorado State University Program of Systems Engineering United States Colorado State University Department of Electrical and Computer Engineering United States Colorado State University Department in Civil and Environmental Engineering United States Colorado State University Department of Electrical and Computer Engineering and of Mathematics United States Colorado State University Civil and Environmental Engineering Department United States Colorado State University Department of Civil and Environmental Engineering United States

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