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Huang X, Mu M, Wang B, Zhang H, Liu Y, Yu L, Zhou M, Ma J, Wang D, Chen W. Associations of coal mine dust exposure with arterial stiffness and atherosclerotic cardiovascular disease risk in chinese coal miners. Int Arch Occup Environ Health 2024; 97:473-484. [PMID: 38530481 DOI: 10.1007/s00420-024-02062-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 03/09/2024] [Indexed: 03/28/2024]
Abstract
OBJECTIVE Whether coal mine dust exposure increases cardiovascular diseases (CVDs) risk was rarely explored. Our objective was to examine the association between coal mine dust exposure and cardiovascular risk. METHODS We estimated cumulative coal mine dust exposure (CDE) for 1327 coal miners by combining data on workplace dust concentrations and work history. We used brachial-ankle pulse wave velocity (baPWV, a representative indicator of arterial stiffness) and ten-year atherosclerotic cardiovascular disease (ASCVD) risk to assess potential CVD risk, exploring their associations with CDE. RESULTS Positive dose-response relationships of CDE with baPWV and ten-year ASCVD risk were observed after adjusting for covariates. Specifically, each 1 standard deviation (SD) increase in CDE was related to a 0.27 m/s (95% CI: 0.21, 0.34) increase in baPWV and a 1.29 (95% CI: 1.14, 1.46) elevation in OR (odds ratio) of risk of abnormal baPWV. Moreover, each 1 SD increase in CDE was associated with a 0.74% (95% CI: 0.63%, 0.85%) increase in scores of ten-year ASCVD and a 1.91 (95% CI: 1.62, 2.26) increase in OR of risk of ten-year ASCVD. When compared with groups unexposed to coal mine dust, significant increase in the risk of arterial stiffness and ten-year ASCVD in the highest CDE groups were detected. CONCLUSION The study suggested that cumulative exposure to coal mine dust was associated with elevated arterial stiffness and ten-year ASCVD risk in a dose-response manner. These findings contribute valuable insights for cardiovascular risk associated with coal mine dust.
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Affiliation(s)
- Xuezan Huang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Min Mu
- Key Laboratory of Industrial Dust Control and Occupational Health of the Ministry of Education, Anhui University of Science and Technology, Huainan, 232000, Anhui, China
| | - Bin Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Haozhe Zhang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Yang Liu
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Linling Yu
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Min Zhou
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Jixuan Ma
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China
| | - Dongming Wang
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
| | - Weihong Chen
- Department of Occupational & Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection and State Key Laboratory of Environmental Health (Incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, Hubei, China.
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Kong D, Li Y, Duan M. Fire and smoke real-time detection algorithm for coal mines based on improved YOLOv8s. PLoS One 2024; 19:e0300502. [PMID: 38635515 PMCID: PMC11025809 DOI: 10.1371/journal.pone.0300502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/28/2024] [Indexed: 04/20/2024] Open
Abstract
Fire and smoke detection is crucial for the safe mining of coal energy, but previous fire-smoke detection models did not strike a perfect balance between complexity and accuracy, which makes it difficult to deploy efficient fire-smoke detection in coal mines with limited computational resources. Therefore, we improve the current advanced object detection model YOLOv8s based on two core ideas: (1) we reduce the model computational complexity and ensure real-time detection by applying faster convolutions to the backbone and neck parts; (2) to strengthen the model's detection accuracy, we integrate attention mechanisms into both the backbone and head components. In addition, we improve the model's generalization capacity by augmenting the data. Our method has 23.0% and 26.4% fewer parameters and FLOPs (Floating-Point Operations) than YOLOv8s, which means that we have effectively reduced the computational complexity. Our model also achieves a mAP (mean Average Precision) of 91.0%, which is 2.5% higher than the baseline model. These results show that our method can improve the detection accuracy while reducing complexity, making it more suitable for real-time fire-smoke detection in resource-constrained environments.
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Affiliation(s)
- Derui Kong
- School of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan, Hebei, China
| | - Yinfeng Li
- School of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan, Hebei, China
| | - Manzhen Duan
- School of Emergency Management and Safety Engineering, North China University of Science and Technology, Tangshan, Hebei, China
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Vidal LLL, de Souza Santos LV, Talamoni SA. Ecotoxicology of heavy metal contamination of Neotropical bats. ENVIRONMENTAL MONITORING AND ASSESSMENT 2024; 196:391. [PMID: 38517570 DOI: 10.1007/s10661-024-12553-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/16/2024] [Indexed: 03/24/2024]
Abstract
Although bats are responsible for many ecosystem services on which humans depend, they are frequently exposed to multiple anthropogenic stressors. Heavy metal (HM) exposure is an emerging threat of great significance to bats, yet the toxicity threshold for most metallic elements remains unknown. The greatest diversity of bats worldwide is in the Neotropical region, where ecotoxicological studies are scarce. Thus, this review provides a current overview of the knowledge available on HMs contamination of Neotropical bats. Analysis of the results of 17 articles published between 2000 and 2023 documented a trend of increasing interest in the topic, although it is incipient and in few countries. Of the 226 species known for the Neotropics, 95 have been investigated for metal concentrations. Seven different matrices were used to assess concentrations of heavy metals in tissues, with fur being the subject of eight studies, highlighting the search for non-invasive analysis. Twenty-one HMs were detected in bats, with mercury being the most common. The highest concentrations of this HM were detected in insectivorous/omnivorous bats, highlighting its magnification in this trophic guild compared to frugivorous bats. Copper, lead, and cadmium did not differ significantly among the other trophic guilds. This review shows that there is knowledge about concentrations of heavy metals in several Neotropical species, but knowledge about the impact of these concentrations on bat health is limited, which highlights the need for research to determine critical concentrations that cause damage to bat health, and that guide conservation actions for their populations, as well as environmental monitoring actions for these pollutants.
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Affiliation(s)
- Luísa Lauren Lima Vidal
- Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, 30535-610, Brazil.
| | - Lucilaine Valéria de Souza Santos
- Departamento de Engenharia Química, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, 30535610, Brazil
| | - Sônia Aparecida Talamoni
- Programa de Pós-Graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Minas Gerais, 30535-610, Brazil.
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Destro ALF, Gonçalves DC, Alves TDS, Gregório KP, da Silva VM, Santos VR, de Castro OW, Filho HB, Garbino GST, Gonçalves RV, Oliveira JMD, Freitas MB. Iron and aluminum ore mining pollution induce oxidative and tissue damage on fruit-eating bats from the Atlantic Forest. JOURNAL OF HAZARDOUS MATERIALS 2024; 465:133285. [PMID: 38154190 DOI: 10.1016/j.jhazmat.2023.133285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/30/2023] [Accepted: 12/13/2023] [Indexed: 12/30/2023]
Abstract
Mining, a vital industry for economic growth, poses significant environmental pollution challenges. Failures in tailings dam containment have caused environmental contamination and raised concerns about preserving the globally significant biodiversity in the Atlantic Forest, which is under severe threat. Fruit-eating bats are key for forest regeneration as essential seed dispersers and pollinators. This study focuses on two keystone species, Artibeus lituratus and Sturnira lilium, exploring the effects of iron ore mining area (FEOA) and aluminum ore mining area (ALOA) on these bats, respectively, and comparing to individuals from a preserved Atlantic Forest fragment (FFA). Bats from FEOA showed higher Aluminum (Al), Calcium (Ca), Iron (Fe) and Barium (Ba) liver accumulation, as well as Ca and Fe muscle accumulation. These animals also showed higher liver and kidney oxidative damage associated with liver fibrosis and kidney inflammation. Brain and muscle also showed oxidative stress. Bats from ALOA showed higher Ca and Ba liver accumulation and Ca, Zinc (Zn), and Ba muscle accumulation, along with higher brain oxidative stress, liver fibrosis, and kidney inflammation. Our findings indicate that iron and aluminum ore mining activities cause adverse effects on bat tissues, posing a potential threat to biodiversity maintenance in the Atlantic Forest.
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Affiliation(s)
| | | | | | | | | | | | | | - Hernando Baggio Filho
- Department of Geography, Federal University of the Jequitinhonha and Mucuri Valleys, MG, Brazil
| | | | | | - Jerusa Maria de Oliveira
- Rede Nordeste de Biotecnologia (RENORBIO), Institute of Chemistry and Biotechnology, Federal University of Alagoas, Maceió, AL, Brazil
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Boaretto FBM, da Silva J, Scotti A, Torres JS, Garcia ALH, Rodrigues GZP, Gehlen G, Rodrigues VB, Charão MF, Soares GM, Dias JF, Picada JN. Comparative toxicity of coal and coal ash: Assessing biological impacts and potential mechanisms through in vitro and in vivo testing. J Trace Elem Med Biol 2024; 81:127343. [PMID: 38035449 DOI: 10.1016/j.jtemb.2023.127343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 11/13/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
BACKGROUND Coal and coal ash present inorganic elements associated with negative impacts on environment and human health. The objective of this study was to compare the toxicity of coal and coal ash from a power plant, assess their inorganic components, and investigate the biological impacts and potential mechanisms through in vitro and in vivo testing. METHODS Particle-Induced X-ray Emission method was used to quantify inorganic elements and the toxicity was evaluated in Caenorhabditis elegans and Daphnia magna in acute and chronic procedures. The genotoxic potential was assessed using alkaline and FPG-modified Comet assay in HepG2 cells and mutagenicity was evaluated using Salmonella/microsome assay in TA97a, TA100, and TA102 strains. RESULTS Inorganic elements such as aluminum (Al) and chromium (Cr) were detected at higher concentrations in coal ash compared to coal. These elements were found to be associated with increased toxicity of coal ash in both Caenorhabditis elegans and Daphnia magna. Coal and coal ash did not induce gene mutations, but showed genotoxic effects in HepG2 cells, which were increased using the FPG enzyme, indicating DNA oxidative damage. CONCLUSIONS The combined findings from bioassays using C. elegans and D. magna support the higher toxicity of coal ash, which can be attributed to its elevated levels of inorganic elements. The genotoxicity observed in HepG2 cells confirms these results. This study highlights the need for continuous monitoring in areas affected by environmental degradation caused by coal power plants. Additionally, the analysis reveals significantly higher concentrations of various inorganic elements in coal ash compared to coal, providing insight into the specific elemental composition contributing to its increased toxicity.
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Affiliation(s)
- Fernanda B M Boaretto
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil
| | - Juliana da Silva
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil.
| | - Amanda Scotti
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil
| | - Jayne S Torres
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil
| | - Ana L H Garcia
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil
| | - Gabriela Z P Rodrigues
- Laboratory of Ecotoxicology, Posgraduate Program in Environmental Quality, University Feevale, ERS-239, 2755, 93525-075 Novo Hamburgo, RS, Brazil
| | - Günther Gehlen
- Laboratory of Ecotoxicology, Posgraduate Program in Environmental Quality, University Feevale, ERS-239, 2755, 93525-075 Novo Hamburgo, RS, Brazil
| | - Vinícios B Rodrigues
- Laboratory of Bioanalyses, Posgraduate Program in Toxicology and Toxicological Analysis, University Feevale, ERS-239, 2755, 93525-075 Novo Hamburgo, RS, Brazil
| | - Mariele F Charão
- Laboratory of Bioanalyses, Posgraduate Program in Toxicology and Toxicological Analysis, University Feevale, ERS-239, 2755, 93525-075 Novo Hamburgo, RS, Brazil
| | - Guilherme M Soares
- Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Agronomia, Porto Alegre, RS, Brazil
| | - Johnny F Dias
- Ion Implantation Laboratory, Institute of Physics, Federal University of Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500, Agronomia, Porto Alegre, RS, Brazil
| | - Jaqueline N Picada
- Laboratory of Genetic Toxicology, PPGBioSaúde, Lutheran University of Brazil (ULBRA), Av. Farroupilha 8001, 92425-900 Canoas, RS, Brazil.
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Benvindo-Souza M, Sotero DF, Dos Santos CGA, de Assis RA, Borges RE, de Souza Santos LR, de Melo E Silva D. Genotoxic, mutagenic, and cytotoxic analysis in bats in mining area. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:92095-92106. [PMID: 37480534 DOI: 10.1007/s11356-023-28861-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 07/14/2023] [Indexed: 07/24/2023]
Abstract
Pollution generated by the mining industry can cause harm to wildlife. This study aimed to evaluate the cytotoxicity, genotoxicity and mutagenicity in bats environmentally exposed to open pit mining. Thus, 62 bats of the following species, Carollia perspicillata, Glossophaga soricina, Phyllostomus hastatus, and Desmodus rotundus exposed to mining activities (ferronickel) were used in the analysis. The animals were obtained in samplings in July and November of 2021, totaling 8 days of sampling in the field. The results indicated that species differ in the frequency of genotoxic damage between sampling points within the mining landscape. Cytotoxicity was observed by scoring of karyorrhexis, pyknosis and karyolysis. The most captured species, C. perspicillata, showed differences in DNA damage between exposed and unexposed populations, but no differences were observed between males (n = 14) and females (n = 20). G. soricina was also a sensitive species for indicating a high frequency of DNA damages compared to the omnivore P. hastatus. Elements such as Mn, Cr, Pb, and Zn observed in water samples were at high levels in the mining area. We conclude that bats in mining areas are susceptible to increased DNA damage as already identified for other species.
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Affiliation(s)
- Marcelino Benvindo-Souza
- Laboratory of Mutagenesis, Instituto de Ciências Biológicas, ICB I - Universidade Federal de Goiás, Samambaia Campus, Goiânia, Goiás, CEP 74.690-900, Brazil.
- Laboratory of Ecotoxicologia e Sistemática Animal - Instituto Federal Goiano - Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde, Goiás, CEP 75.901-970, Brazil.
- Postgraduate Program in Natural Resources of the Cerrado at the State University of Goiás, Anápolis, CEP 75132-903, Brazil.
| | - Daiany Folador Sotero
- Laboratory of Mutagenesis, Instituto de Ciências Biológicas, ICB I - Universidade Federal de Goiás, Samambaia Campus, Goiânia, Goiás, CEP 74.690-900, Brazil
| | - Cirley Gomes Araújo Dos Santos
- Laboratory of Ecotoxicologia e Sistemática Animal - Instituto Federal Goiano - Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde, Goiás, CEP 75.901-970, Brazil
- Department of Biology, Universidade Estadual Paulista, Júlio de Mesquita Filho, São José do Rio Preto, São Paulo, CEP 15.054-000, Brazil
| | - Rhayane Alves de Assis
- Laboratory of Ecotoxicologia e Sistemática Animal - Instituto Federal Goiano - Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde, Goiás, CEP 75.901-970, Brazil
- Department of Biology, Universidade Estadual Paulista, Júlio de Mesquita Filho, São José do Rio Preto, São Paulo, CEP 15.054-000, Brazil
| | - Rinneu Elias Borges
- Laboratory of Zoology - Universidade de Rio Verde - UniRV, Fazenda Fontes do Saber, Rio Verde, Goiás, CEP 75901-970, Brazil
| | - Lia Raquel de Souza Santos
- Laboratory of Ecotoxicologia e Sistemática Animal - Instituto Federal Goiano - Rodovia Sul Goiana, Km 01, Zona Rural, Rio Verde, Goiás, CEP 75.901-970, Brazil
| | - Daniela de Melo E Silva
- Laboratory of Mutagenesis, Instituto de Ciências Biológicas, ICB I - Universidade Federal de Goiás, Samambaia Campus, Goiânia, Goiás, CEP 74.690-900, Brazil
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Torquetti CG, de Carvalho TP, de Freitas RMP, Freitas MB, Guimarães ATB, Soto-Blanco B. Influence of landscape ecology and physiological implications in bats from different trophic guilds. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 857:159631. [PMID: 36280059 DOI: 10.1016/j.scitotenv.2022.159631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 09/28/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
Bats may serve as bioindicators of human impact on landscape ecology. This study aimed to evaluate the health condition of bats from different food guilds captured in two areas with different land use profiles in Brazil and to compare data on the oxidant-antioxidant balance and histopathological changes due to different anthropogenic pressures. Bats were collected from a protected area in Serra do Cipó National Park (SCNP), MG, Brazil, and an area with intense agricultural activity in the municipality of Uberaba (UB), MG, Brazil. Despite the differences in land use and occupation between the studied areas, bats showed similar responses. However, the trophic guilds were affected differently. Frugivorous bats in both areas showed lower activities of the enzymes superoxide dismutase (SOD), catalase (CAT), and glutathione S-transferase (GST) and concentrations of malondialdehyde (MDA) than other guilds, which can be explained by the greater intake of antioxidants from the diet in addition to the lower production of reactive oxygen species (ROS). Histopathological analysis of the livers revealed that the animals had a similar prevalence in the two areas, with some differences related to guilds. Compared with other bats, hematophagous bats from SCNP had a higher prevalence of steatosis and, together with frugivorous bats from Uberaba, had higher frequencies of ballooning degeneration, suggesting that these animals are subjected to anthropogenic factors capable of inducing disturbances in hepatic metabolism. Hematophagous bats from Uberaba had a higher prevalence of portal inflammation, while insectivorous bats from Uberaba had a higher prevalence of lobular and portal inflammation. The profiles of use and occupation of the areas are different; Uberaba bats seem to face worse conditions because they show more liver damage owing to lipoperoxidation.
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Affiliation(s)
- Camila Guimarães Torquetti
- Programa de Pós-Graduação em Ciência Animal, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos 6627, Belo Horizonte, MG 30123-970, Brazil
| | - Thaynara Parente de Carvalho
- Programa de Pós-Graduação em Ciência Animal, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos 6627, Belo Horizonte, MG 30123-970, Brazil
| | - Renata Maria Pereira de Freitas
- Programa de Pós-Graduação em Ciências Ambientais, Universidade Federal de Goiás (UFG), Avenida Esperança s/n, Goiânia, GO 74690-900, Brazil
| | - Mariella Bontempo Freitas
- Departamento de Biologia Animal, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Viçosa, MG 36570-000, Brazil
| | - Ana Tereza Bittencourt Guimarães
- Laboratório de Investigações Biológicas, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Rua Universitária 2069, Cascavel, PR 85819-110, Brazil
| | - Benito Soto-Blanco
- Programa de Pós-Graduação em Ciência Animal, Escola de Veterinária, Universidade Federal de Minas Gerais (UFMG), Avenida Antônio Carlos 6627, Belo Horizonte, MG 30123-970, Brazil.
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Trechera P, Moreno T, Córdoba P, Moreno N, Amato F, Cortés J, Zhuang X, Li B, Li J, Shangguan Y, Dominguez AO, Kelly F, Mhadhbi T, Jaffrezo JL, Uzu G, Querol X. Geochemistry and oxidative potential of the respirable fraction of powdered mined Chinese coals. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 800:149486. [PMID: 34391157 DOI: 10.1016/j.scitotenv.2021.149486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
This study evaluates geochemical and oxidative potential (OP) properties of the respirable (finer than 4 μm) fractions of 22 powdered coal samples from channel profiles (CP4) in Chinese mined coals. The CP4 fractions extracted from milled samples of 22 different coals were mineralogically and geochemically analysed and the relationships with the OP evaluated. The evaluation between CP4/CP demonstrated that CP4 increased concentrations of anatase, Cs, W, Zn and Zr, whereas sulphates, Fe, S, Mo, Mn, Hf and Ge decreased their CP4 concentrations. OP results from ascorbic acid (AA), glutathione (GSH) and dithiothreitol (DTT) tests evidenced a clear link between specific inorganic components of CP4 with OPAA and the organic fraction of OPGSH and OPDTT. Correlation analyses were performed for OP indicators and the geochemical patterns of CP4. These were compared with respirable dust samples from prior studies. They indicate that Fe (r = 0.83), pyrite (r = 0.66) and sulphate minerals (r = 0.42) (tracing acidic species from pyrite oxidation), followed by S (r = 0.50) and ash yield (r = 0.46), and, to a much lesser extent, Ti, anatase, U, Mo, V and Pb, are clearly linked with OPAA. Moreover, OPGSH correlation was identified by organic matter, as moisture (r = 0.73), Na (r = 0.56) and B (r = 0.51), and to a lesser extent by the coarse particle size, Ca and carbonate minerals. In addition, Mg (r = 0.70), B (r = 0.47), Na (r = 0.59), Mn, Ba, quartz, particle size and Sr regulate OPDTT correlations. These became more noticeable when the analysis was done for samples of the same type of coal rank, in this case, bituminous.
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Affiliation(s)
- Pedro Trechera
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain; Department of Natural Resources and Environment, Industrial and TIC Engineering (EMIT-UPC), 08242 Manresa, Spain.
| | - Teresa Moreno
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain
| | - Patricia Córdoba
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain
| | - Natalia Moreno
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain
| | - Fulvio Amato
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain
| | - Joaquim Cortés
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain
| | - Xinguo Zhuang
- Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, China
| | - Baoqing Li
- Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, China
| | - Jing Li
- Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, China
| | - Yunfei Shangguan
- Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, China
| | - Ana Oliete Dominguez
- MRC-PHE Centre for Environment and Health, King's College London, London SE1 9NH, UK
| | - Frank Kelly
- MRC-PHE Centre for Environment and Health, King's College London, London SE1 9NH, UK
| | - Takoua Mhadhbi
- Univ. Grenoble Alpes, IRD, CNRS, Grenoble INP, IGE (UMR 5001), 38000 Grenoble, France
| | - Jean Luc Jaffrezo
- Univ. Grenoble Alpes, IRD, CNRS, Grenoble INP, IGE (UMR 5001), 38000 Grenoble, France
| | - Gaelle Uzu
- Univ. Grenoble Alpes, IRD, CNRS, Grenoble INP, IGE (UMR 5001), 38000 Grenoble, France
| | - Xavier Querol
- Institute of Environmental Assessment and Water Research (IDAEA), Spanish Research Council (CSIC), 08034 Barcelona, Spain; Key Laboratory of Tectonics and Petroleum Resources, China University of Geosciences, Ministry of Education, Wuhan 430074, China.
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9
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Torabi A, Moosavirad SH, Ariafar S, Eftekhari A. Dust emission reduction in iron ore concentrate production plant using value engineering method. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:37647-37660. [PMID: 33723787 DOI: 10.1007/s11356-021-13331-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Dust emission is one of the critical problems of the mining industry. Dust emission can cause respiratory diseases among workers and adjacent residents of the factory and environmental pollution in the region. This study aims to reduce dust emissions of an iron ore concentrate plant in Iran. Applying dust control methods can affect the production process. Therefore, in this study, the value engineering (VE) method has been used, which focuses on improving the processes without affecting the main functions. This method is implemented in three stages. In the pre-study stage of VE, the prerequisites of study, such as determining the management requirements, study scope, evaluation criteria, forming the VE team, and planning, were met. In the study stage, the required information was collected; the studied process functions were identified and ranked; 62 ideas were created based on the functions and then evaluated; the final scenarios for the selected device, hopper, were developed and ranked using the VIKOR method; and finally, confirmation of the results by the management was obtained. In the post-study stage, the results will be implemented. The approach of this study was based on maintaining the functions of the production process and production rate and finding the most effective solution to reduce dust and environmental hazards, the most efficient solution in terms of performance, and the most cost-effective solution in terms of fixed and variable costs. According to the results, dry and wet dust suppression systems are the best options among the scenarios to meet the objectives of this study.
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Affiliation(s)
- Amirreza Torabi
- Department of Industrial Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Seyed Hamed Moosavirad
- Department of Industrial Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.
| | - Shahram Ariafar
- Department of Industrial Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Alireza Eftekhari
- Industrial Engineering and Management Development Department, Zarand Iranian Steel Company, Kerman, Iran
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Ding J, Zhou G, Liu D, Jiang W, Wei Z, Dong X. Synthesis and Performance of a Novel High-Efficiency Coal Dust Suppressant Based on Self-Healing Gel. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:7992-8000. [PMID: 32459481 DOI: 10.1021/acs.est.0c00613] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
During transportation and storage, coal produces a lot of dust, which pollutes the environment and threatens the occupational health of workers. Although many dust suppressants have been developed for dust prevention at work, the implementation of current dust suppressants does not meet the requirements due to various factors such as the hydrophobic nature of coal dust and a harsh external environment. In this study, hydroxyethyl cellulose, acrylamide, and stearyl methyl acrylate were used for micelle polymerization to prepare an environmental protection dust suppressant for preventing dust during coal storage and transportation. The microstructure of the reactants and the products was analyzed by Fourier transform infrared as well as scanning electron microscopy. The strength and self-healing tensile properties of binder coal were taken as indicators to determine the best synthesis dosage and conditions. The dust suppressant particles are applied to the dust accumulation area, contact each other after water absorption, and swell to complete the healing, to achieve the purpose of dust control. The evaluation of the relevant properties of the dust suppressant reveals that the dust suppressant has a good covering effect, an excellent dust suppressant performance, and a significant dust suppression action.
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Affiliation(s)
- Jianfei Ding
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Gang Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Dong Liu
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Wenjing Jiang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zunyi Wei
- Environmental Protection Technology Center, Shandong Energy Zaozhuang Mining Group, Zaozhuang 277899, China
| | - Xiaosu Dong
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
- State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology, Qingdao 266590, China
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