Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Wojtkowska, Małgorzata; Bogacki, Jan

doi:10.3390/ijerph19126978

Cited by 6 publications

(3 citation statements)

References 53 publications

(69 reference statements)

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“…It was also demonstrated that the degree of metal immobilization depends on their chemical properties, chemical composition of ash and the ambient environment of the slurry. The heavy metals chosen for the tests (Cu, Cd, Zn, Ni and Pb) exhibit the ease of precipitating from sewage to the soil and groundwaters, as well as high toxicity (Wojtkowska and Bogacki, 2012). Therefore, these metals can be divided into two groups, namely, semivolatile (Pb, Cd) and non-volatile (Zn, Cu, Ni) metals.…”

Section: Discussionmentioning

confidence: 99%

Archives of Environmental Protection

Falaciński¹,

Wojtkowska²

2021

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In Poland, in recent years, there has been a rapid accumulation of sewage sludge -a by-product in the treatment of urban wastewater. This has come about as a result of infrastructure renewal, specifically, the construction of modern sewage treatment plants. The more stringent regulations and strategic goals adopted for modern sewage management have necessitated the application of modern engineering methodology for the disposal of sewage sludge. One approach is incineration. As a consequence, the amount of fly ash resulting from the thermal treatment of municipal sewage sludge has grown significantly. Hence, intensive work is in progress for environmentally safe management of this type of waste. The aim of the experiment was to evaluate the possibility of using the fly ash that results from municipal sewage sludge thermal treatment (SSTT) as an additive to hardening slurries. The article presents the technological and functional parameters of hardening slurries with an addition of fly ash obtained by SSTT. Moreover, the usefulness of these slurries is analyzed on the basis of their basic properties, i.e., density, contractual viscosity, water separation, structural strength, volumetric density, hydraulic conductivity, compressive and tensile strength. The research on technological and functional properties was carried out, the aim of which was to determine the practical usefulness of the hardening slurries used in the experiment. Subsequently, leaching tests were performed for heavy metals in the components, the structure of the hardening slurries. An experiment showed leaching of hazardous compounds at a level allowing their practical application. The article presents the potential uses of fly ash from SSTT in hardening slurry technology.

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Section: Discussionmentioning

confidence: 99%

Archives of Environmental Protection

Falaciński¹,

Wojtkowska²

2021

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“…In the literature, many models were commonly used to describe the kinetic chemical behavior of heavy metals, particularly around mines (Camizuli et al, 2014;Fangueiro et al, 2005;Gismera et al, 2004;Wojtkowska and Bogacki, 2022). The first-order kinetic model has been commonly used and assumed to have good dynamic significance:…”

Section: Kinetic Modelling and Data Processingmentioning

confidence: 99%

Environmental and Geochemical Characteristics of Heavy Metals in Soils Around the Former Mining Area of Zeïda (High Moulouya, Morocco)

Nassiri

Rhoujjati

Moreno‐Jiménez

et al. 2023

Water Air Soil Pollut

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The Zeïda mining center, closed in the mid-1980s, was once intensively exploited for lead concentrates. Throughout its activity, more than 12 Mt of tailings were generated and, to this day, they are still abandoned in the open air, exposed to weathering conditions without any rehabilitation. The purpose of the present study is to evaluate the environmental and geochemical characteristics of the soils, combining physicochemical, mineralogical, sequential, and kinetic extraction analyses, as well as the metallic spatial distribution and pollution indices of heavy metals (Pb, Cd, Cu, As, and Zn), levels, and risks. The results showed that the abandoned tailings had the highest concentrations of heavy metals, far exceeding their equivalents in the international and local guidelines. The soils spatial distribution maps showed that the levels of heavy metals decreased with distance from the tailings. Based on the pollution indices results, the soils located on and near the tailings are highly contaminated mainly by Pb. While downstream of the tailings, this contamination intensity decreased until becoming null. The sequential extraction results indicated that Pb, Zn, and Cd were primarily associated with the exchangeable fraction in tailings and soils. Therefore, they were more mobile and environmentally hazardous in the study area. The As was mainly associated with the residual fraction, and was thus immobile. Cu was more mobile in tailings as long as it was associated with the reducible fraction while it became immobile in the downstream soils. The kinetic extractions using EDTA and H 2 O revealed that the labile and less labile fractions were very significant in tailing for the majority of heavy metals. The methodology applied in this study may constitute a valuable tool to develop appropriate mine reclamation solutions.

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“…Sediments are a crucial part of rivers and lakes. During several physical and chemical processes, suspended solids and different ions in the water are adsorbed and enriched in sediments in river channels, reducing the contamination in water sediments [ 1 , 2 , 3 ]. This can objectively show the area’s water quality.…”

Section: Introductionmentioning

confidence: 99%

Distribution, Assessment, and Source of Heavy Metals in Sediments of the Qinjiang River, China

Zhang

Chen

et al. 2022

IJERPH

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Heavy metals are toxic, persistent, and non-degradable. After sedimentation and adsorption, they accumulate in water sediments. The aim of this study was to assess the extent of heavy metal pollution of Qinjiang River sediments and its effects on the ecological environment and apportioning sources. The mean total concentrations of Mn, Zn, Cr, Cu, and Pb are 3.14, 2.33, 1.39, 5.79, and 1.33 times higher than the background values, respectively. Co, Ni, and Cd concentrations are lower than the background values. Fe, Co, Ni, Cd, Cr, Cu, and Pb are all primarily in the residual state, while Mn and Zn are primarily in the acid-soluble and oxidizable states, respectively. Igeo, RI, SQGs, and RAC together indicate that the pollution status and ecological risk of heavy metals in Qinjiang River sediments are generally moderate; among them, Fe, Co, Ni, Cd, Cr, and Pb are not harmful to the ecological environment of the Qinjiang River. Cu is not readily released because of its higher residual composition, suggesting that Cu is less harmful to the ecological environment. Mn and Zn, as the primary pollution factors of the Qinjiang River, are harmful to the ecological environment. This heavy metal pollution in surface sediments of the Qinjiang River primarily comes from manganese and zinc ore mining. Manganese carbonate and its weathered secondary manganese oxide are frequently associated with a significant amount of residual copper and Cd, as a higher pH is suitable for the deposition and enrichment of these heavy metals. Lead–zinc ore and its weathering products form organic compounds with residual Fe, Co, Cr, and Ni, and their content is related to salinity. The risk assessment results of heavy metals in sediments provide an important theoretical basis for the prevention and control of heavy metal pollution in Qinjiang River.

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Assessment of Trace Metals Contamination, Species Distribution and Mobility in River Sediments Using EDTA Extraction

Cited by 6 publications

References 53 publications

Archives of Environmental Protection

Archives of Environmental Protection

Environmental and Geochemical Characteristics of Heavy Metals in Soils Around the Former Mining Area of Zeïda (High Moulouya, Morocco)

Distribution, Assessment, and Source of Heavy Metals in Sediments of the Qinjiang River, China

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