Determination of the chemical properties of water and sediments in agricultural land use by using energy dispersive X-ray fluorescence spectrometry

Mancuso, Malva Andrea; Azevedo, Francéllwika Catharine Gomes de; Wastowski, Arci Dirceu; Fioreze, Mariele

doi:10.11606/issn.2316-9095.v16i1p85-100

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…56 In this way the presence of iron in the raw samples are also due to a significant amount of this metal in Brazilian soils. 57,58 This amount of iron is due to the characteristic of soils rich in hematite (Fe 2 O 3 ), magnetite (Fe 3 O 4 ), olivine ((MgFe) 2 SiO 4 ), limotita (Fe(OH) 3 .nH 2 O), among others. 59 The metals Al and Cr appeared in equal amounts to 1.11% in the SEM analysis and ± 0.33% in XRF analysis for Al, and 20.9% in the SEM analysis and ± 9.98% in XRF analysis for Cr.…”

Section: Analysis Of Raw Sludge Samplesmentioning

confidence: 99%

Application of thermal plasma for inertization of sludge produced during treatment of landfill leachate

et al. 2016

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One of the outstanding issues of concern by governments and society in general relates to the final destination of solid waste, which can bring severe impacts on social, political, economic and environmental dimensions. The sustainable development of enterprises and industries goes for the care of the planet, thus ensuring the quality of life for future generations and the planet. The disposal of municipal waste in landfills is the technique most commonly employed for the remediation of solid residues. The residues undergo decomposition beneath the soil and in the presence of water this generates leachate, which percolates down to the bottom of the landfill through drainage. This drained liquid is collected from the landfill installations and subjected to treatment, which involves physico-chemical and biological processes. Landfill leachate commonly contains heavy metals due to the incorrect disposal of products such as fluorescent bulbs and batteries. In this context, a method for the treatment of sludge originating from the physicochemical remediation of leachate using thermal plasma is proposed in this paper. The efficiency of the method was verified by monitoring the total organic carbon content, water content and density of the sludge. The quantity of metals present in the samples was determined before and after pyrolysis by thermal plasma using flame atomic absorption spectroscopy (FAAS), scanning electron microscopy (SEM) and X-ray fluorescence (XRF) spectrometry techniques. The results show that the leachate treatment method used was efficient, presenting the best results for the samples of iron and zinc.

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Section: Analysis Of Raw Sludge Samplesmentioning

confidence: 99%

Application of thermal plasma for inertization of sludge produced during treatment of landfill leachate

et al. 2016

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“…Na falta de referências locais, muitos estudos brasileiros estabelecem o uso de referências internacionais como balizadoras da qualidade dos sedimentos (HORTELLANI et al, 2013;MANCUSO et al, 2016;SILVA et al, 2012;VOIGT;CAMPOS, 2016).…”

Section: Valores Guias Da Qualidade Dos Sedimentosunclassified

Potenciais riscos associados à qualidade de sedimentos em zonas de prospecção mineral: Rio da Várzea, Rio Grande do Sul - Brasil

Silva¹

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Mineral prospection zones are known for their ability to alter environmental quality. The most recent cases of degradation of water resources in the cities of Brumadinho (MG), Mariana (MG) Santo Antônio do Grama (MG) and Barcarena (PA) show that this is a difficult theme to approach. The presence of potentially deleterious chemical species in mining tailings may negatively impact aquatic environments, making it impossible to use the contaminated water for consumption and leading to the extinction of local life. In this sense, environmental assessments in the mining, water and sediment tailings of water systems close to the mining areas present themselves as a tool to identify changes in the river basins that support them. Although studies point to the influence of mining activities on the quality of sediments of water systems, there are few contributions on the risks associated with the environmental quality of sediments in zones of mineral extraction of semiprecious rocks. Thus, this study characterized the influence of mineral extraction activities (amethyst, quartz, agate, calcite and gypsum) on the potential risk associated with the sediment quality of Rio de Várzea, southern Brazil, the world's largest region of ametetic rock extraction. Physical and chemical parameters (OD, pH, EH, CE, NTU, STD and T) of the water column were quantified in situ. Daily and monthly precipitations were also evaluated in the year of collection and the historical series (1976-2017) at the station 2753015, the fluviometry of the monthly and daily flows, and the historical flow series (2008-2017) at station 74270000, data from the National System Information on Water Resources. Sediment grading classes were investigated for coarse fractions (from 2000 to 75 μm) and for fine fractions (< 75 μm), their moisture content (gravimetric methods) was determined. Chemical species concentrations were quantified by Wavelength Scattering Spectrometry (WDXRF), Dispersive Energy X-ray Emission Spectrometry (EDXRF); Optical Emission Spectrometry by Coupled Inductive Plasma (ICP OES). It was demonstrated, through Background strategies and Environmental Quality Indexes, the moderate contamination of the sediments of Rio de Várzea-RS. It was established, by distinct geochemical strategies, the construction of the baseline (Background) of the Várzea River Watershed-RS, through the use of local soils of environmental preservation areas and, finally, the negative implication of the non use of local references in the evaluation of sediment quality.

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Sediments of Hydropower Plant Water Reservoirs Contaminated with Potentially Toxic Elements as Indicators of Environmental Risk for River Basins

Cabral,

Gentil,

Ramalho

et al. 2024

Water

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The aim of this work was to determine the concentrations, distribution, and fate of potentially toxic elements [lead (Pb), zinc (Zn), nickel (Ni), copper (Cu), mercury (Hg), arsenic (As), and cadmium (Cd)] in sediments of a hydropower plant water reservoir located in the Brazilian Cerrado biome (used as system model). The purpose of this study was achieved with an analysis of the level of contamination based on the geoaccumulation index (Igeo) and factor contamination (FC) and comparisons with values established by environmental legislation. The physical–chemical–biological properties of sediment samples, the distribution, and the fate of potentially toxic elements (PTEs) in the basin of the stream studied were also investigated using Pearson’s correlation coefficient (r) and principal component analysis (PCA). Cu, Hg, and Cd concentrations in the sediment samples from most of the points analyzed were above level II of the categorization stipulated in environmental legislation, characterizing sediments of poor quality. Moreover, Igeo and FC values indicated potential pollution of the water reservoir sediment by Cd. Concentrations of Cd exceeding 0.34 mg kg−1 surpassed the reference values for water quality established by Conama Resolution No. 454/2012, highlighting the urgent need for ongoing sediment quality monitoring strategies. Hence, the study water reservoir was classified as being moderately to extremely polluted due to the fate of potentially toxic metals in the sediment samples. Frequent monitoring of the sediment quality in watersheds with hydropower plants is indispensable for the assessment of water resources, considering the importance of the water supply and power generation for the population. Moreover, water contaminated by PTEs poses potential risks to river basins, as well as to human and animal health. The results of this work can assist in the investigation of other water reservoirs around the world.

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Determination of the chemical properties of water and sediments in agricultural land use by using energy dispersive X-ray fluorescence spectrometry

Cited by 3 publications

References 13 publications

Application of thermal plasma for inertization of sludge produced during treatment of landfill leachate

Application of thermal plasma for inertization of sludge produced during treatment of landfill leachate

Potenciais riscos associados à qualidade de sedimentos em zonas de prospecção mineral: Rio da Várzea, Rio Grande do Sul - Brasil

Sediments of Hydropower Plant Water Reservoirs Contaminated with Potentially Toxic Elements as Indicators of Environmental Risk for River Basins

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