scholarly journals Identification of Technogenic Magnetic Particles and Forms of Occurrence of Potentially Toxic Elements Present in Fly Ashes and Soil

Minerals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1066
Author(s):  
Małgorzata Wawer
Keyword(s):  
Power Plants ◽  
Toxic Elements ◽  
Magnetic Particles ◽  
Dust Emission ◽  
Potentially Toxic Elements ◽  
Residual Fraction ◽  
Hard Coal ◽  
Iron Minerals ◽  
Technogenic Magnetic Particles ◽  
A Share

Solid fossil fuel power plants are the main source of energy in Poland. In 2018, the most important energy carrier was hard coal with a share of 57.9%, followed by lignite with a share of 18.1%. In addition to CO2, NOx and SOx, the combustion of fossil fuels produces dusts containing, among others, potentially toxic elements (PTEs), e.g., Pb, Zn, Cu, Cr, Cd. Although the currently operating power plants have efficient filter systems, the total dust emission in Poland in 2017 amounted to 341,000 t, of which approximately 36,000 t was from the power plants. PTEs present in the power plant dust are often accompanied by technogenic magnetic particles (TMPs)—mainly iron oxides and hydroxides formed in high-temperature technological processes as a result of the transformations of iron minerals contained in raw materials and additives. The presence of magnetic iron minerals (e.g., magnetite, hematite, maghemite, metallic iron) in the tested ashes from hard coal and lignite power plants was confirmed by scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS) analysis. The sequential extraction analysis showed that most of the analyzed PTEs found in dust after hard coal combustion were mainly related to amorphous and crystalline FeOx or in the residual fraction and in dust after lignite combustion, mainly in the most mobile fractions.

Potentially toxic elements in fen peatland soils located near lignite-fired power plants in Central Poland

2021 ◽  
pp. e00370
Author(s):  
Bartłomiej Glina ◽  
Joanna Beata Kowalska ◽  
Katarzyna Łuczak ◽  
Ryszard Mazurek ◽  
Waldemar Spychalski ◽  
...  
Keyword(s):  
Power Plants ◽  
Toxic Elements ◽  
Potentially Toxic Elements ◽  
Central Poland

scholarly journals Technogenic magnetic particles of topsoil from different sources of emission - A case study from upper silesian conurbation, Poland

2018 ◽  
Vol 247 ◽  
pp. 00051
Author(s):  
Maria Magdalena Szuszkiewicz ◽  
Adam Łukasik ◽  
Tadeusz Magiera ◽  
Marcin Szuszkiewicz
Keyword(s):  
Magnetic Particles ◽  
Potentially Toxic Elements ◽  
Dust Deposition ◽  
Thermomagnetic Analysis ◽  
Magnetic Components ◽  
Forest Sites ◽  
Geochemical Elements ◽  
Different Sources ◽  
Technogenic Magnetic Particles

Studies on the effects of dust deposition on soils in urban-industrial areas were conducted with application of magnetic (soil magnetometry, thermomagnetic analysis) and geochemical (elements content) methods. The study area covers three different forest sites on Upper Silesian Conurbation. The purpose of the research was an estimation of soil pollution and characteristic of air derived particles. Results show magnetite and maghemite as dominant magnetic components of analyzed soil samples. The highest volume magnetic susceptibility (κ) and no correlation with potentially toxic elements (PTEs) were stated close to metallurgical plant whilst the highest correlation coefficient between κ and PTEs was stated in samples from the urban area and in a vicinity of coking plant.

PAHs and potentially toxic elements in the fly ash and bed ash of biomass fired power plants

2015 ◽  
Vol 132 ◽  
pp. 139-152 ◽  
Author(s):  
Reginald E. Masto ◽  
Elina Sarkar ◽  
Joshy George ◽  
Kumari Jyoti ◽  
Pashupati Dutta ◽  
...  
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Toxic Elements ◽  
Potentially Toxic Elements

scholarly journals Potentially toxic elements determination and chemical-microbiological analysis of potable water in Taxco de Alarcón, Guerrero

2019 ◽  
Vol 36 (2) ◽  
pp. 147-158 ◽  
Author(s):  
Guadalupe Sánchez-Montoya ◽  
Oscar Talavera-Mendoza ◽  
Giovanni Hernández-Flores ◽  
Elvia Díaz-Villaseñor ◽  
Alejandro H. Ramírez-Guzmán ◽  
...  
Keyword(s):  
Particulate Matter ◽  
Water Treatment ◽  
Water Distribution ◽  
Toxic Elements ◽  
Potable Water ◽  
Distribution Network ◽  
Treatment Plant ◽  
Potentially Toxic Elements ◽  
Residual Fraction ◽  
Microbiological Analysis

Taxco de Alarcón is an important mining site in Mexico. The town is a well-known tourist destination where the potable water quality is important for guaranteeing the health of the users. Due to the altitude of the city, the surface and rain water are the main sources of water. Thus, the aims of this study were to characterize i) the composition and chemical speciation of particulate matter suspended in water to determine the content of potentially toxic elements, and ii) the chemical and bacteriological composition of the potable water of Taxco de Alarcón, Guerrero, Mexico, according to the Mexican official norm NOM-127-SSA1-1994. The analyzed representative samples were taken from the municipal water distribution network, the water treatment plant, the Chacuhalco spring and a mixture of the waters of the Chontalcuatlán river, the Tenería spring, and the San Marcos and El Sombrerito dams. According to the results, 94 % of the analyzed samples did not comply with the standard NOM-127-SSA1-1994. Moreover, the distribution of the analyzed elements in the different chemical fractions of the particulate matter showed that the highest concentration of Cd (4.17 mg∙kg-1) is associated with the carbonate fraction. This means Cd is moderately bioavailable. On the other hand, the highest concentrations of Pb, Zn, Mn and Cu (62.2, 42.3, 243 and 1026 mg∙kg-1, respectively) were detected in the Fe-Mn oxyhydroxide fraction, also considered as moderately bioavailable, whereas the highest concentrations of As, Fe and V (24.0, 7583 and 31.3 mg∙kg-1, respectively) were associated with the residual fraction, considered as non-bioavailable. The results indicate that, to improve the quality of potable water, modifications must be incorporated along the water treatment processes, and in the distribution network and management.

Tracking the occurrence of anthropogenic magnetic particles and potentially toxic elements (PTEs) in house dust using magnetic and geochemical analyses

2019 ◽  
Vol 245 ◽  
pp. 909-920 ◽  
Author(s):  
Efstratios Kelepertzis ◽  
Ariadne Argyraki ◽  
Fotini Botsou ◽  
Elina Aidona ◽  
Ábel Szabó ◽  
...  
Keyword(s):  
House Dust ◽  
Toxic Elements ◽  
Magnetic Particles ◽  
Potentially Toxic Elements ◽  
Geochemical Analyses

scholarly journals Current Status and Temporal Trend of Potentially Toxic Elements Pollution in Agricultural Soil in the Yangtze River Delta Region: A Meta-Analysis

2021 ◽  
Vol 18 (3) ◽  
pp. 1033
Author(s):  
Shufeng She ◽  
Bifeng Hu ◽  
Xianglin Zhang ◽  
Shuai Shao ◽  
Yefeng Jiang ◽  
...  
Keyword(s):  
Yangtze River ◽  
Agricultural Soil ◽  
Toxic Elements ◽  
Temporal Trend ◽  
Meta Analysis ◽  
Yangtze River Delta ◽  
Potentially Toxic Elements ◽  
River Delta ◽  
The Yangtze River ◽  
The Yangtze River Delta

Potentially toxic elements (PTEs) pollution in the agricultural soil of China, especially in developed regions such as the Yangtze River Delta (YRD) in eastern China, has received increasing attention. However, there are few studies on the long-term assessment of soil pollution by PTEs over large regions. Therefore, in this study, a meta-analysis was conducted to evaluate the current state and temporal trend of PTEs pollution in the agricultural land of the Yangtze River Delta. Based on a review of 118 studies published between 1993 and 2020, the average concentrations of Cd, Hg, As, Pb, Cr, Cu, Zn, and Ni were found to be 0.25 mg kg−1, 0.14 mg kg−1, 8.14 mg kg−1, 32.32 mg kg−1, 68.84 mg kg−1, 32.58 mg kg−1, 92.35 mg kg−1, and 29.30 mg kg−1, respectively. Among these elements, only Cd and Hg showed significant accumulation compared with their background values. The eastern Yangtze River Delta showed a relatively high ecological risk due to intensive industrial activities. The contents of Cd, Pb, and Zn in soil showed an increasing trend from 1993 to 2000 and then showed a decreasing trend. The results obtained from this study will provide guidance for the prevention and control of soil pollution in the Yangtze River Delta.

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