Article
Engineering, Multidisciplinary
Sanghoon Park, Jun-Ho Yang, Jaehun Jung, Seonghwan Kim, Youngkyu Cho, Jack J. Yoh
Summary: Air pollution related to fine dust is increasing globally with rapid industrialization and modernization. Therefore, it is essential to develop an advanced system for detecting harmful components in the air. In this study, a novel instrument based on SIPS technology was designed for in-situ measurement of atomic components in fine dust. By integrating various functional parts into a compact single module with embedded software, quantitative measurements of key components were successfully conducted. The compact SIPS module demonstrated enhanced detection capabilities and can be used for quantitative monitoring of fine dust in the atmospheric environment.
Article
Multidisciplinary Sciences
Gaetano Perone
Summary: This paper investigates the relationship between air pollutant exposure and COVID-19 spread and mortality in 107 Italian provinces. The results show positive correlations between common air pollutants and various industries and sectors, as well as long-term exposure to certain pollutants and COVID-19 prevalence and mortality rates.
SCIENTIFIC REPORTS
(2022)
Article
Thermodynamics
Ronan Pele, Pierre Brequigny, Jerome Bellettre, Christine Mounaim-Rousselle
Summary: This study investigates the combustion and emissions characteristics of a spark-ignition engine using direct injection of ethanol blended with ammonia and pure ammonia. Five different fuel compositions were tested, and two injection strategies were conducted. The results show that all blends and pure ammonia exhibit high stability. However, pure ammonia requires more restrictive operating conditions. Adding 25% of NH3 improves thermal efficiency but increases NOx emissions. The stratified strategy for blends improves combustion durations and decreases NOx emissions compared to the homogeneous strategy, while CO emissions roughly increase.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Energy & Fuels
Andrzej Zoltowski, Wojciech Gis
Summary: The article discusses the production of ammonia in the exhaust after-treatment systems of light-duty vehicles, and the potential harm it may cause to human health. Research on the impact of air-fuel ratio regulation and engine operating parameters on NH3 concentration is presented, highlighting that excessive NH3 emissions may occur under certain conditions and urging for regulations to limit these pollutants.
Article
Agriculture, Dairy & Animal Science
Andrea Ariano, Marcello Scivicco, Massimiliano D'Ambola, Salvatore Velotto, Rebecca Andreini, Simone Bertini, Annalisa Zaccaroni, Lorella Severino
Summary: The study aimed to evaluate the presence of non-essential and essential trace elements in freshwater crayfish edible tissues to determine the healthiness of the product and assess the pollution status of the sampling sites. The results indicated that crayfish were safe for human consumption and showed mild contamination of heavy metals in the sampling areas.
Article
Environmental Sciences
Yehya Elsayed, Sofian Kanan, Ahmad Farhat
Summary: This study in the GCC region near two major airports reports seasonal variations in meteorological parameters, atmospheric dust, and dust-borne heavy metals concentrations. The concentrations of heavy metals, PM2.5, and PM10 fluctuated with meteorological conditions, with potential harm to human health. The chemical correlation between atmospheric dust and regional desert sand implies the localized origin of smaller dust particles.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Jun-Ho Yang, Jaehun Jung, Seonghwan Kim, Youngkyu Cho, Jack J. Yoh
Summary: The study introduced a novel approach to real-time detection of airborne coronavirus propagation, providing new insights for monitoring and preventing virus transmission.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Runkai Zhang, Guanghui Xu, Baoqian Li, Zhanwu Wang, Jing Gao, Jin Li, Yufeng Sun, Guangyin Xu
Summary: To achieve sustainable development and reduce air pollution from biomass boiler emissions, a study upgraded the three-stage dust removal system for biomass briquetting fuel by adding a Selective Catalyst Reduction (SCR) external denitration system and a wet electrostatic precipitator, resulting in a five-stage dust removal system. Real-time online monitoring of the system's operating conditions was conducted using soot concentration, sulfur dioxide (SO2) concentration, and nitrogen oxides (NOX) concentration as evaluation indicators. The results showed that the five-stage dust removal system had an average smoke and dust concentration of 3.47 mg/m³, an average SO2 concentration of 2.49 mg/m³, and an average NOX concentration of 25.48 mg/m³. The removal rates of soot, SO2, and NOX increased by 5.8%, 4%, and 48.5%, respectively, which were significantly lower than the emission standards. This innovative system greatly reduces harmful gas emissions from large-scale biomass briquette combustion in China and contributes to environmental protection while providing a theoretical basis for the biomass briquette fuel industry.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2023)
Article
Environmental Sciences
Jinjin Wei, Peili Shi, Guannan Cui, Xin Li, Minke Xu, Dongyao Xu, Yunfeng Xie
Summary: This study investigated soil pollution in China related to the electroplating industry and found significant pollution in production areas, liquid storage facilities, and solid zones. The study provides reference and methodology for pollution prevention, control, and site repair technology in the electroplating industry.
ENVIRONMENTAL POLLUTION
(2023)
Article
Materials Science, Multidisciplinary
Ke Hu, Cuiliu Han, Khashayar Khanlari, Yumeng Zhang, Xiaomin Peng, Jiuxing Zhang
Summary: This research investigates the influences of W powder shape and powder mixing condition on the microstructural and mechanical properties of 93W-5.6Ni-1.4Fe heavy alloys (93WHAs) prepared via SPS. The study found that using spherical W powders blended with nano Ni and Fe powders as raw materials can improve the microstructure and mechanical properties of the alloy.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Energy & Fuels
Marius Catalin Barbu, Adrian Birtas, Radu Chiriac
Summary: This paper presents the results of an experimental and theoretical investigation on a Renault HR09DET spark ignition engine, comparing the performance when fueled with gasoline, compressed natural gas (CNG), and hydrogen. The study found that adding 20%-30% hydrogen to the mixture can extend the combustion limits and significantly reduce the emissions of unburned hydrocarbons (HC) and carbon monoxide (CO). Nitrogen oxide emissions (NOx) slightly decreased compared to gasoline when using stoichiometric mixtures. Increasing the compression ratio can improve engine efficiency.
Review
Polymer Science
Azfaralariff Ahmad, Mohamad Anuar Kamaruddin, H. P. S. Abdul Khalil, Esam Bashir Yahya, Syaifullah Muhammad, Samsul Rizal, Mardiana Idayu Ahmad, Indra Surya, C. K. Abdullah
Summary: Water pollution is a significant environmental problem caused by industrial and economic growth, with human activities such as industry, agriculture, and technology increasing pollutant levels and harming the environment and public health. Organic dyes and heavy metals are major contributors to water pollution, with dyes causing ecological imbalance through increased temperature and heavy metals adding toxic elements to wastewater. Researchers have focused on adsorption, precipitation, and filtration as effective water treatment methods, with adsorption being a simple and inexpensive way to remove organic dyes. Cellulose-based aerogels have shown promise as sustainable and efficient materials for water treatment, with their unique properties and potential for removing dyes and heavy metals.
Article
Environmental Sciences
Gunnar Berghman, Dirk Goossens
Summary: The study measured the concentrations of 13 chemical elements in urban street sediment in Leuven, Belgium, with Cu, Sb, Pb, and Zn showing the highest enrichment. Cu and Zn concentrations in Leuven exceeded those in most other cities. The Integrated Pollution Index for Leuven classified the city as very highly polluted on average.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Biology
Md. Shakir Ahammed, Md. Abdul Baten, Muhammad Aslam Ali, Shahin Mahmud, Md. Sirajul Islam, Bhim Sen Thapa, Md. Aminul Islam, Md. Alim Miah, Tanmoy Roy Tusher
Summary: This study investigated the ability of microalgae and cyanobacteria to remove pollutants, especially heavy metals, from polluted river water. The results showed that both microalgae and cyanobacteria significantly reduced the pollutants and heavy metal concentrations. However, their efficiency in pollutant removal varied depending on the species.
Article
Environmental Sciences
F. J. Osuna, E. Pavon, M. D. Alba
Summary: This study investigated the feasibility of a new family of nanomaterials, swelling high charge micas, in removing Pb2+, Cd2+ and Hg2+ from aqueous solutions. Experimental results demonstrated that these micas are efficient heavy metal adsorbents, with Na-M2 being the best adsorbent for Pb2+ and Cd2+, and MEA-M2 for Hg2+.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
