Article
Environmental Sciences
Yifan Wen, Shaojun Zhang, Ye Wu, Jiming Hao
Summary: This study found that on-road ammonia (NH3) emissions in urban areas of China play a significant role in the formation of fine particulate matter (PM2.5) and pose severe risks to human health. The study also revealed that vehicular NH3 emissions are highly concentrated in densely populated areas, even surpassing agricultural emissions. These findings provide valuable insights into the absolute value and relative importance of on-road NH3 emissions in different regions, seasons, and population densities in China.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
Article
Mathematics, Applied
M. Zagour
Summary: This paper focuses on modeling and numerically simulating multilane vehicular traffic using the kinetic theory of active particles methods. The approach considers each driver-vehicle system as a micro-system and describes the microscopic state using position, velocity, and activity variables. The interactions between micro-systems are modeled using stochastic game theory, leading to a mathematical model within the framework of kinetic theory. The paper establishes the well-posedness of the related Cauchy problem for the spatially homogeneous case and demonstrates the model's ability to reproduce empirical data through numerical simulations, specifically addressing the road environment conditions.
MATHEMATICAL MODELS & METHODS IN APPLIED SCIENCES
(2023)
Article
Environmental Sciences
Erika P. Donado, Marcos L. S. Oliveira, Janaina O. Goncalves, Guilherme L. Dotto, Luis F. O. Silva
Summary: This study evaluated the physicochemical, morphological, and mineralogical properties of soil samples from three public playgrounds in Bogota, Medellin, and Barranquilla, and verified the potential impacts caused by particles aerodynamics in Colombian cities. The study found an anthropogenic enrichment of potentially hazardous elements (PHEs) in playground soils, with elements like As and Sn showing spatial variations influenced by local sources such as vehicle traffic and industries. The accumulation of traffic-derived PHEs, especially elements like Pb, Sb, or As, was highlighted as having negative impacts on human health and the environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Cathy W. Y. Li, Stacy Walters, Jean-Francois Mueller, John Orlando, Guy P. Brasseur
Summary: The detection of anthraquinone in tea leaves has raised concerns and the European Union imposed a maximum residue limit for this substance. This study investigates the contamination resulting from atmospheric deposition of anthraquinone using a global chemical transport model. The simulations suggest that atmospheric deposition could be a substantial source of anthraquinone found on tea leaves in certain tea-producing regions.
Article
Environmental Sciences
Di Nie, Zhaowen Qiu, Xin Wang, Zhen Liu
Summary: This study investigates the sources of black carbon (BC) and ultrafine particles (UFPs) in an urban roadway region and clarifies the characteristics of primary and secondary UFPs at roadside sites. The results reveal that traffic exhausts are the main source of BC, while non-traffic sources dominate the secondary particles at road intersections.
ENVIRONMENTAL RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Lin Huang, Wendy Zhang, Guaciara M. Santos, Blanca T. Rodriguez, Sandra R. Holden, Vincent Vetro, Claudia Czimczik
Summary: Carbonaceous aerosol consists mainly of organic carbon (OC) and elemental carbon (EC) from various emission sources. Radiocarbon (C-14) analysis is used to apportion OC and EC into their sources, requiring physical separation. The ECT9 protocol effectively isolates OC and EC for C-14 analysis, with high reproducibility and low uncertainty in measurements.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2021)
Article
Environmental Sciences
Vaios Moschos, Martin Gysel-Beer, Robin L. Modini, Joel C. Corbin, Dario Massabo, Camilla Costa, Silvia G. Danelli, Athanasia Vlachou, Kaspar R. Daellenbach, Soenke Szidat, Paolo Prati, Andre S. H. Prevot, Urs Baltensperger, Imad El Haddad
Summary: The study achieved closure on atmospheric absorption using multiple techniques, determining the contributions of different aerosol fractions to total absorption and highlighting the importance of oxygenated organic aerosols in BrC absorption during winter. The absorption of BC was found to be independent of its source, with evidence of a filter-based lensing effect associated with NR-PM components.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2021)
Article
Construction & Building Technology
Feng Zhang, Ying Lu, Yapeng Wang, Zhongan Jiang, Jianguo Liu, Jihe Chen
Summary: Dust pollution is a serious problem in the construction industry, affecting the health of workers and the environment. This study simulated and analyzed the generation and diffusion of dust on construction sites. A dust suppressor was developed using polymerization technology, which effectively controlled dust in construction sites.
BUILDING AND ENVIRONMENT
(2023)
Article
Environmental Sciences
Xiaoyu Wang, Enfeng Liu, Mengxia Yan, Shuwei Zheng, Ying Fan, Yingxue Sun, Zijun Li, Jinling Xu
Summary: This study comprehensively investigated the contamination and sources of metals in urban road dust in Jinan. The results showed that winter dust had higher contamination levels compared to spring dust, with cadmium, chromium, copper, lead, antimony, tin, and zinc as the main contaminants. Industrial and traffic sources were identified as the primary contributors to metal contamination, with coal burning emissions also playing a role in winter. Industrial emissions were found to pose higher health risks due to high chromium loading factor, while traffic emissions dominated metal contamination. The noncarcinogenic and carcinogenic risks of chromium in spring and winter for children were estimated through Monte Carlo simulations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Dongmei Zhang, Zhanqing Li, Hao Wu, Tong Wu, Rongmin Ren, Zhaoxin Cai, Chen Liang, Lu Chen
Summary: Air pollution is a major concern in densely populated megacities in China. A series of experiments conducted in Beijing, Shanghai, and Guangzhou revealed that ultrafine particles constitute a high proportion of aerosol pollutants in these cities. The concentration of these particles increases at nighttime due to traffic emissions.
ATMOSPHERIC ENVIRONMENT
(2022)
Article
Environmental Sciences
Binhua Zhao, Bingze Hu, Peng Li, Tanbao Li, Caiwen Li, Ying Jiang, Yongxia Meng
Summary: Atmospheric particulate pollution poses a serious threat to human health, with PM2.5 and PM10 being important indicators. Using the HYSPLIT model, backward trajectory analysis was conducted for particulate matter in Xi'an. Cluster analysis was also used to study the main air flow to Xi'an. The study calculated the potential source areas of particles in Xi'an based on concentration monitoring data.
Article
Environmental Sciences
Huiyizhe Zhao, Zhenchuan Niu, Weijian Zhou, Sen Wang, Xue Feng, Shugang Wu, Xuefeng Lu, Hua Du
Summary: This study investigated the characteristics and changes in carbonaceous aerosol sources in northern Chinese cities after the implementation of the Air Pollution Prevention and Control Action Plan in 2013. The results showed that coal combustion and liquid fossil fuels were the major sources of carbonaceous aerosols, with non-fossil sources also contributing. The contribution of coal combustion and liquid fossil fuels decreased in Beijing, indicating the effectiveness of air quality management. Specific measures targeting coal combustion, biomass burning, and vehicle emissions should be strengthened in the future.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Aravindan Rema Aswini, Prashant Hegde, Suresh Kumar Reddy Boreddy, Prabha Rajasekharan Nair
Summary: A comprehensive study of near-surface aerosols in different regions of India revealed seasonal variations in carbonaceous aerosols, with higher concentrations during winter. Southern peninsular India and oceanic regions were dominated by SO42-, while northern India was dominated by OC. The oxidative aging of organics during long-range transport over oceanic regions led to a decrease in OC and an increase in SO42- mass fraction.
ACS EARTH AND SPACE CHEMISTRY
(2021)
Article
Environmental Sciences
J. A. Casquero-Vera, H. Lyamani, G. Titos, M. C. Minguillon, L. Dada, A. Alastuey, X. Querol, T. Petaja, F. J. Olmo, L. Alados-Arboledas
Summary: A new method was proposed to determine the contributions of primary vehicle exhaust and biomass burning particles to aerosol number concentrations, showing differences in particle contributions between urban and suburban sites. Urban sites have higher aerosol number concentrations compared to suburban sites, while biomass burning particles contribute more to black carbon levels in suburban areas. The traditional method used in the study leads to an overestimation of primary vehicle exhaust particles concentrations in both urban and suburban sites.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Cassandra Johannessen, John Liggio, Xianming Zhang, Amandeep Saini, Tom Harner
Summary: Pollution from car tires is gaining research interest due to its presence in the urban environment and associated toxicity. This review summarizes the current knowledge on atmospheric tire wear pollution and highlights the lack of research on gaseous contaminants and oxidation products. The physico-chemical properties and environmental behavior of these pollutants are largely unknown, indicating a critical research gap.
ATMOSPHERIC POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Esmaeil Allahkarami, Abolfazl Dehghan Monfared, Luis Felipe Oliveira Silva, Guilherme Luiz Dotto
Summary: In this study, fixed-bed experiments were conducted using a novel Pb-Fe spinel-activated carbon adsorbent for phenol uptake from water. The adsorbent was characterized and compared to pristine activated carbon. The results showed that the Pb-Fe spinel-activated carbon composite had a higher adsorption capacity and was suitable for fixed-bed adsorption of phenol.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Green & Sustainable Science & Technology
Marcos L. S. Oliveira, Diana Pinto, Maria Eliza Nagel-Hassemer, Leila Dal Moro, Giana de Vargas Mores, Brian William Bodah, Alcindo Neckel
Summary: The objective of this study is to assess particles containing rare-earth elements (REEs) in abandoned deposits of Brazilian fine coal tailings (BFCTs) and identify extraction methods. The BFCT areas were analyzed using X-ray Diffraction, Raman Spectroscopy, focused ion beam coupled with scanning electron microscopy, and high-resolution transmission electron microscopy coupled with microanalysis. The results showed higher concentrations of REEs in smaller coal fines. These easily extractable deposits, located close to transportation routes, present an opportunity for secondary market utilization rather than discarding.
Article
Environmental Sciences
Alcindo Neckel, Marcos L. S. Oliveira, Laercio Stolfo Maculan, Brian William Bodah, Affonso Celso Goncalves Jr, Luis F. O. Silva
Summary: This study identifies the types of ultra-fine air pollutants present in the local atmosphere of Budapest using satellite images and physical sample collection. The results reveal the presence of ultra-fine particles containing elements harmful to human health. The study also highlights the importance of reducing pollutants for a better quality of life in the city.
Article
Chemistry, Physical
Guilherme Oliveira Vargas, Carlos Schnorr, Franciane Bastista Nunes, Theodoro da Rosa Salles, Mariana Zancan Tonel, Solange Binotto Fagan, Ivana Zanella da Silva, Luis F. O. Silva, Sergio Roberto Mortari, Guilherme Luiz Dotto, Cristiano Rodrigo Bohn Rhoden
Summary: This study reports the synthesis of magnetic graphene oxide (GO Fe3O4) with different amounts of iron nanoparticles for the adsorption of furosemide (FUR). The optimal adsorbent was found to be GO Fe3O4 1:1, with a removal percentage and adsorption capacity of 96.15% and 96.91 mg g-1, respectively, at pH 3.0 and 293.15 K. The process was influenced by initial concentration, adsorbent dosage, and pH, while the ionic strength had minimal effect on the performance of GO Fe3O4 1:1. Sips and PSO models were the best fit for the experimental data, indicating a heterogeneous surface. GO Fe3O4 1:1 exhibited high removal percentage even after several cycles of adsorption/desorption.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Victoria X. X. Nascimento, Carlos Schnorr, Sabrina F. F. Luetke, Maria C. F. Da Silva, Fernando Machado Machado, Pascal S. S. Thue, Eder C. Lima, Julien Vieillard, Luis F. O. Silva, Guilherme L. L. Dotto
Summary: Water pollution by dyes is a major problem, and magnetic activated carbons show promise as alternatives. In this study, magnetic activated carbons were prepared and used for the removal of brilliant blue dye. The different proportions of the materials influenced the adsorption kinetics and equilibrium of the dye.
Article
Green & Sustainable Science & Technology
Marcos L. S. Oliveira, Gabriela Oliveira Valenca, Diana Pinto, Leila Dal Moro, Brian William Bodah, Giana de Vargas Mores, Julian Grub, Bashir Adelodun, Alcindo Neckel
Summary: This study investigates the nanomineralogical and geochemical evolution of hazardous elements in abandoned coal mining deposits. The objective is to evaluate nanoparticulate chemical elements in sediments collected from deactivated coal mining areas in Colombia. The analysis reveals high proportions of amorphous materials containing hazardous elements, emphasizing the need for environmental recovery projects in the affected regions.
Editorial Material
Green & Sustainable Science & Technology
Luis F. O. Silva, Marcos L. S. Oliveira
Article
Environmental Sciences
Leila Dal Moro, Jandir Pauli, Laercio Stolfo Maculan, Alcindo Neckel, Dieisson Pivoto, Claudionor Guedes Laimer, Eliane Thaines Bodah, Brian William Bodah, Vaneli do Carmo Dornelles
Summary: The growing demand for food and food security is accompanied by the need for sustainability in food production due to global climate change. This study evaluates the environmental risks in three municipalities in southern Brazil using GIS and AHP methods, demonstrating its effectiveness in mapping and quantifying degraded areas.
ENVIRONMENTAL DEVELOPMENT
(2023)
Article
Engineering, Environmental
Rolando Ramirez, Diana Pinto, Jordana Georgin, Anelise H. P. de Oliveira, Dison S. P. Franco, Delmira Wolff, Elvis Carissimi, Mu. Naushad, Luis F. O. Siva, Eder C. Lima, Guilherme L. Dotto
Summary: The consumption of acai pulp (Euterpe oleracea) has increased significantly in recent years, resulting in the generation of large amounts of waste from the fruit stone. This study successfully converted the waste into activated carbon, which effectively removed the herbicide atrazine. The activated carbon showed good textural characteristics and demonstrated high efficiency and affinity for the target molecule.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Guilherme L. Dotto, Julien Vieillard, Diana Pinto, Sabrina F. Luetke, Luis F. O. Silva, Glaydson S. dos Reis, Eder C. Lima, Dison S. P. Franco
Summary: This study investigated the recovery of Gd3+ from real leachate of phosphogypsum using natural bentonite clay. The adsorption study revealed that the clay has typical bentonite characteristics and can effectively adsorb Gd3+. The kinetics and thermodynamics of the adsorption process were analyzed, and it was found that the Langmuir model and Avrami fractional order model were suitable for describing the adsorption isotherms and kinetic data, respectively. The study also showed that citric acid was an efficient desorbing agent for Gd3+ from the bentonite, and the clay could selectively recover Gd3+ from the real leachate of phosphogypsum.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Environmental Sciences
Victoria X. Nascimento, Diana Pinto, Sabrina F. Lutke, Maria C. F. da Silva, Fernando. M. Machado, Eder. C. Lima, Luis F. O. Silva, Guilherme L. Dotto
Summary: Sapelli wood sawdust-derived magnetic activated carbon (SWSMAC) was produced through single-step pyrolysis using KOH and NiCl2 as activating and magnetization agents. The obtained SWSMAC was a mesoporous material with good textural properties and exhibited ferromagnetic properties. It effectively adsorbed brilliant blue FCF dye through various interactions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Glaydson S. dos Reis, Carlos E. Schnorr, Guilherme L. Dotto, Julien Vieillard, Matias S. Netto, Luis F. O. Silva, Irineu A. S. De Brum, Mikael Thyrel, Eder C. Lima, Ulla Lassi
Summary: This study investigated the adsorption and recovery of cerium (Ce(III)), a rare earth element, from an aqueous solution using a sustainable hydrochar made from wood waste. The hydrochar contained various surface functional groups, which significantly influenced its adsorption capacity. The pH of the solution strongly affected the Ce(III) removal, with the highest removal efficiency achieved at pH 6.0. The hydrochar exhibited high efficiency in Ce(III) adsorption, with a maximum adsorption capacity of 327.9 mg g(-1) at 298 K. The adsorption kinetics followed the general order model, while the equilibrium process fit the Liu isotherm model. The Ce(III) adsorption mechanism on the hydrochar involved electrostatic interactions and chelation between surface functional groups and Ce(III). The hydrochar also demonstrated excellent regeneration capacity using sulfuric acid as an eluent. This research presents a sustainable approach for developing an efficient adsorbent for Ce(III) removal with excellent physicochemical properties.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Haifeng Chen, Hao Zou, M. Santosh, Huawen Cao, Franco Pirajno, Changcheng Huang, Mingcai Hou
Summary: Researchers have identified a supervolcano eruption event in the tuff layers from the Early-Middle Triassic boundary in the Yangtze Block. This eruption may have contributed to the delayed biotic recovery after the end-Permian mass extinction.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yanjuan Yin, Baohua Zhang, Xinzhuan Guo
Summary: This study determines the Fe-Mn interdiffusion rates in natural Mn-bearing garnet crystals with 750 ppm H2O using an experimental approach. The results show that the Fe-Mn interdiffusion coefficient slightly decreases with increasing Fe content, and water significantly enhances the Fe-Mn interdiffusion in garnet. These findings suggest that the time required for homogenization of the compositional zoning of a garnet is much shorter than previously thought.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yirang Jang, Sung Won Kim, Vinod O. Samuel, Sanghoon Kwon, Seung-Ik Park, M. Santosh, Keewook Yi
Summary: Detrital zircon geochronology and Hf isotope analysis are used to infer provenance characteristics and evaluate the tectonic evolution of sedimentary basins. The results of this study show that the Paleozoic sequences of the Okcheon Belt have a diverse provenance linked to different tectonic environments.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Stephen F. Foley, Isra S. Ezad
Summary: This study investigates the trace element compositions of melts and minerals from hydrous pyroxenites containing K-richterite through high-pressure experiments. The results show that different minerals play different roles in the enrichment of various trace elements. The study also models the isotopic aging process in hydrous pyroxenite source rocks.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
G. Harshitha, C. Manikyamba, M. Santosh, Cheng-Xue Yang, A. Keshav Krishna, V. V. Sesha Sai, I. Panduranga Reddy
Summary: The early Archean oceans underwent significant redox changes that had a lasting impact on the Earth's biosphere. This study investigates the geochemical characteristics of Archean Mnformations in southern India and reveals the importance of these sedimentary deposits in understanding the ancient redox conditions and sedimentation patterns. The findings suggest that the sediments were deposited in shallow to deeper shelf environments in the Archean proto-ocean, and they provide evidence of regional episodes of ocean oxygenation prior to the Great Oxygenation Event.
GEOSCIENCE FRONTIERS
(2024)