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Tytuł:
The 1st Conference on Contemporary Problems of Geochemistry
Autorzy:
Migaszewski, Zdzisław M.
Gałuszka, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2086497.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
acid mine drainage
pollution sources
acid precipitation
natural disasters
Opis:
This issue of “Mineralogy” includes selected papers based on some oral and poster presentations of the 1st Geochemical Conference on “Contemporary Problems of Geochemistry” organized by the Geochemical Group of the Mineralogical Society of Poland and Jan Kochanowski University in Kielce. The conference was held at the Institute of Chemistry of Jan Kochanowski University in Kielce on 27–30 September 2010.
Źródło:
Mineralogia; 2011, 42, 1; 3--5
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The 1st Conference on Contemporary Problems of Geochemistry
Autorzy:
Migaszewski, Z. M.
Gałuszka, A.
Powiązania:
https://bibliotekanauki.pl/articles/2086533.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Mineralogiczne
Tematy:
acid mine drainage
pollution sources
acid precipitation
natural disasters
Opis:
This issue of “Mineralogy” includes selected papers based on some oral and poster presentations of the 1st Geochemical Conference on “Contemporary Problems of Geochemistry” organized by the Geochemical Group of the Mineralogical Society of Poland and Jan Kochanowski University in Kielce. The conference was held at the Institute of Chemistry of Jan Kochanowski University in Kielce on 27–30 September 2010.
Źródło:
Mineralogia; 2011, 42, 1; 3--5
1899-8291
1899-8526
Pojawia się w:
Mineralogia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pyrite oxidation inhibition by hydrophobic films for acid mine drainage control at the source
Autorzy:
Wang, Shuncai
Zhao, Yue
Li, Shuang
Powiązania:
https://bibliotekanauki.pl/articles/110200.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydrophobic film
pyrite
suppression
linoleic acid
acid mine drainage
Opis:
Acid mine drainage (AMD), which is also known as acid rock drainage (ARD), can cause serious environmental pollution, especially for surrounding aquatic and terrestrial ecosystems due toits low pH, high metal and sulfate concentration. Acid mine drainage is an urgent environmental problem for the worldwide ore mining industry. In this paper, we demonstrated that hydrophobic films can inhibit the oxidation of pyrite-bearing tailings to achieve the control of at-source AMD. The results of chemical leaching testing showed that the hydrophobic films formed by linoleic acid can suppress the oxidation of pyrite-bearing tailings and reduce the AMD production. In addition, the presence of hydrophobic films of linoleic acid on the surface of pyrite-bearing tailings was confirmed by the results from Fourier transform infrared (FTIR) analyses and scanning electron microscopy with energy dispersive spectrometry (SEM / EDS).
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1132-1140
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geomicrobiology of Acid Mine Drainage in the weathering zone of pyrite-bearing schists in the Rudawy Janowickie Mountains (Poland)
Autorzy:
Borkowski, A.
Parafiniuk, J.
Wolicka, D.
Kowalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/2060320.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Acid Mine Drainage
microbial communities
pyrite
weathering zone
Opis:
This paper presents the geomicrobiological analysis of acid water reservoirs and Acid Mine Drainage (AMD) developed in the weathering zone of pyrite-bearing schists near the closed-down pyrite mine in Wieściszowice (south-western Poland). The analysis was focused on two reservoirs characterized by different physical and chemical properties (pH, redox potential, content of sulphates and heavy metals). The study is the first thorough report on the geomicrobiological relationships taking place in the AMD setting in Wieściszowice and enables a description of the microbiological processes that significantly influence biogeochemical cycles of sulfur and iron in the analyzed water reservoirs. The reservoir water also harbors numerous big, organized microbial structures in the form of streamers. Samples of these structures were studied in detail using optical and electron microscopy, as well as microbiological cultivation and molecular methods. According to the obtained results, the slime streamers from the Wieściszowice mine are characterized by the co-occurrence of typical chemolithoautotrophic microorganisms oxidizing sulphur and iron together with sulphate reducing bacteria. The presence of these structures probably depends on the occurrence of iron (II) in the surrounding environment.
Źródło:
Geological Quarterly; 2013, 57, 4; 601--612
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Forming of Acid Mine Drainage Based on Characteristics of Coal Mining, East Kalimantan, Indonesia
Autorzy:
Widayati Amy, Sri
Dani, Umar
Nu'man, Harits
Muslim, Dicky
Nasruddin, Dudi
Nuryahya, Himawan
Nurhasan, Rully
Agustin, Daryl Sarah
Powiązania:
https://bibliotekanauki.pl/articles/27323828.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
coal
sulfur
acid mine drainage
NAPP
net acid production potential
Opis:
As one of the world’s coal producers, Indonesia continues to increase its coal production. The purpose of this study is to identify and analyze the characteristics of coal that has the potential to produce acid mine drainage. The research method is coal mapping and zoning based on formation, observation, and description of coal characteristics, coal sampling, ultimate and proximate testing, and analysis. The results of the study describe the characteristics of coal related to distribution in the early stages of evaluating the potential for acid mine formation, besides that it can be used as a basis for classifying the potential for acid mine drainage which has a high enough total sulfur based on the results of testing on 15 samples. To prevent the reaction to acid mine drainage, it can be based on the geochemical characteristics of coal by constructing a mine reservoir or making water drainage in a mine that is not close to the stockpile, because there is a possibility that water has the potential to form acid mine drainage (AMD) when it comes in contact with coal potential. So that coal does not have the potential to be a source of acid mine drainage.
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 301--310
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biogenic catalysis in sulphide minerals weathering processes and acid mine drainage genesis
Autorzy:
Kušnierová, Mária
Praščáková, Mária
Nowak, Anna
Gorazda, Katarzyna
Wzorek, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/1039326.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
sulphide minerals
weathering
acid mine drainage
biotransformation
Acidithiobacillus ferrooxidans
Opis:
Bioleaching and biogenesis are the main outputs from a large group of environmental processes participating in the natural material cycle, used in raw materials processing. Bio-oxidation reactions are the main basis for bioleaching procedures, often participating in parallel leaching processes. During the leaching processes of polycomponent sulphide substrates, the factor of process selection also plays an important role, being in direct relation to the electric properties and galvanic effect occurring between the individual components of the leaching substrate. This work gives a summary of the results of a research focused on the possibilities of using biotechnological procedures for treatment of Slovak sulphide ores. The object of the research is extraction of valuable metals, undesirable admixtures and degradation of crystal lattice of sulphides for subsequent chemical leaching processing of precious metals. The results of experiments on the existence of biogenic processes in situ on waste dumps from exploitation containing residual sulphides are also presented. The processes result in acid mine drainage water generation. These waters are strongly mineralised (over 48 g/L) and of low pH; that is why they are very caustic. The arsenic content (2.558 mg/L) in outflowing waters from old mines is high and over the limits set by the law.
Źródło:
Acta Biochimica Polonica; 2014, 61, 1; 33-39
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Schwertmannite precipitated from acid mine drainage in theWestern Sudetes (SW Poland) and its arsenate sorption capacity
Autorzy:
Parafiniuk, J.
Siuda, R.
Powiązania:
https://bibliotekanauki.pl/articles/2059129.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Western Sudetes
schwertmannite
ochre
acid mine drainage
arsenate sorption
Opis:
This paper contains XRD, Mössbauer and IR spectroscopy, chemical composition and thermal analysis results for the mineral schwertmannite present in the weathering zone developed in two abandoned sulphide mines in the Sudetes (SW Poland). In Wieściszowice a pyrite deposit was exploited, and in Radzimowice the deposit consisted of polymetallic mineralization with predominant arsenopyrite. In both localizations schwertmannite is developed as dripstones in underground workings and loose sediments precipitating from the acid mine drainage (AMD) waters. Schwertmannite forms tiny, needle-like crystals 2–3 m in size, usually grouped in botryoidal aggregations. The chemical composition of schwertmannite from Wieściszowice is typical for this mineral, and in Radzimowice the mineral contains up to 5.20 wt. % of As2O5. Due to highly developed specific surface and structural features, schwertmannite has the strongest sorption capabilities among the components of ochres, and takes up the largest amounts of arsenate oxyanion fromAMD, as well as considerable amounts of phosphates and heavymetals. About 71-87% of arsenate is sorbed on to the surface of the schwertmannite crystals and may readily be released into solution, 12–30% is bound into the structure of the mineral, and about 1% is an admixture of insoluble ferric arsenates.
Źródło:
Geological Quarterly; 2006, 50, 4; 475-486
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Treatment of acid drainage in a uranium deposit by means of a natural wetland
Autorzy:
Groudeva, V.
Groudev, S.
Stoyanova, A.
Powiązania:
https://bibliotekanauki.pl/articles/147283.pdf
Data publikacji:
2004
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
acid mine drainage
bioremediation
natural wetland
uranium
water cleanup
Opis:
Abstract Acid drainage waters generated in the uranium deposit G-1, Western Bulgaria, were treated by means of a natural wetland located in the deposit. The waters had a pH in the range of about 2.4 3.9 and contained uranium and radium radionuclides, heavy metals (copper, zinc, cadmium, iron, manganese), arsenic and sulphates in concentrations usually much higher than the relevant permissible levels for waters intended for use in the agriculture and/or industry. The wetland was characterized by abundant and emergent vegetation and a diverse microflora. Typha latifolia, Typha angustifolia and Phragmites australis were the main plant species in the wetland but representatives of the genera Scirpus, Juncus, Eleocharis, Potamogeton, Carex and Poa as well as different algae were also present. The water flow through the wetland varied in the range at about 0.2 1.2 l/s reflecting water residence times in the wetland of about 10 50 hours. An efficient water cleanup took place in the wetland, even during the cold winter months at ambient temperatures close to 0°C. The removal of pollutants was due to different processes but the microbial dissimilatory sulphate reduction and the sorption of pollutants on organic matter (living and dead plant and microbial biomass) and clays present in the wetland played the main role.
Źródło:
Nukleonika; 2004, 49,suppl.1; 17-20
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of acid buffering capacity on the remobilization of heavy metals in sewage sludge barrier for tailings
Autorzy:
Chen, Y.
Zhang, H.
Ju, Y.
Powiązania:
https://bibliotekanauki.pl/articles/205048.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sewage sludge
heavy metals
acid mine drainage
acid buffering capacity
remobilization
Opis:
Remobilization of heavy metals from the bottom liner system due to the seepage of acid mine drainage (AMD) is an important concern in the long-term management of tailing impoundment. Titration tests were carried out to evaluate the acid buffering capacity (ABC) of sewage sludge and to investigate its effect on the remobilization of heavy metals. Test results demonstrate that the ABC increases with solid/liquid ratio and anaerobic incubation time and it is mainly attributed to the abundant organic matters contained and increasing carbonate loads. The added heavy metals (Zn, Pb, and Cu) were well immobilized during the anaerobic incubation stage but were released out dramatically during the acidification especially when pH drops below 6.0 because of dissolution of carbonates and cation exchange of clay minerals. The calculated results, from a simplified model, indicate that high levels of remobilization of heavy metals are not expected during the typical management time because of the high ABC of compacted sewage sludge barrier. These results support that sewage sludge is a suitable bottom liner material for the management of AMD from tailings.
Źródło:
Archives of Environmental Protection; 2018, 44, 2; 62-72
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating acid mine drainage potential and alteration properties of Zn-Pb wastes from Görgü (Malatya, Türkiye) region
Autorzy:
Sis, Hikmet
Başaran, Basri
Powiązania:
https://bibliotekanauki.pl/articles/24148654.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
degradation of waste ore
acid mine drainage
static test
pyrite
Opis:
Acid mine drainage (AMD) is one of the main causes of environmental threats resulting from mining activities, yet efficient characterization and prediction of AMD potential of wastes play an important role in preventing AMD. In this study, the chemical and mineralogical properties of fresh waste samples, collected from waste ponds of the Görgü (Malatya) zinc-lead ore processing plant, were determined and the results were used to explain its AMD potential. Alteration properties of the wastes in water was investigated by monitoring certain properties of the prepared suspension with respect time. Additionally, pyrite concentrate particles were added into the suspensions at certain proportions to evaluate its effect on the AMD generation and alteration. Analysis and test results showed that the raw waste was rich in carbonate and poor in pyritic sulfur, and hence did not have the AMD generation potential. The pH, electrical conductivity, and metal ions concentrations of the suspension medium were determined at regular intervals, and obtained data were found very beneficial to explain the time-dependent behavior of waste in water. After the depletion of liquid in the suspension, the remained solid residuals were chemically and mineralogically analyzed to compare with raw waste. It was concluded that sufficient aeration and stirring of suspension is required for noticeable alteration of the waste.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 169357
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Origin of sulfates in the post-mining lakes in the eastern part of Muskau Arch (Polish-German borderland)
Autorzy:
Labus, K. M.
Skoczyńska-Gajda, S.
Powiązania:
https://bibliotekanauki.pl/articles/2060557.pdf
Data publikacji:
2013
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
acid mine drainage
post-mining lakes
stable isotope analyis
Muskau Arch
Opis:
Exploitation of lignites, carried out within glaciotectonic structures of Muskau Arch, led to formation of numerous post-minng lakes impacted by Acid Mine Drainage (AMD). . The isotopic analyses decribed in this paper allowed for identification of sources of the dissolved sulphates in the waters of two representative lakes. One of the sources of sulfur isotopes could be oxidation of sulphides (supplied in debris sliding from the slopes of waste dumps, which are surrounding the lakes) in the water column. The fraction of oxygen from water in forming the sulphates vary from about 5% to 25% in the first lake, while in the second it falls within the range 25%-85%. The research confirmed that the main source of sulfates in the lakes is the oxidation of pyrite.
Źródło:
Geological Quarterly; 2013, 57, 3; 561--566
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of lead ions from acid aqueous solutions and acid mine drainage using zeolite bearing tuff
Autorzy:
Zendelska, A.
Golomeova, M.
Golomeov, B.
Krstev, B.
Powiązania:
https://bibliotekanauki.pl/articles/204844.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
adsorption
acid mine drainage
zeolite bearing tuff
lead ions
equilibrium studies
Sasa mine
Opis:
The adsorption of lead ions onto a zeolite bearing tuff (stilbite) from synthetic acid aqueous solution and acid mine drainage taken from Sasa mine, Macedonia, is elaborated in this paper. The results present that adsorption occurs efficiently in both of cases. The physical and chemical properties of the used natural material, zeolite bearing tuff, are characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy. The concentration of metal ions in solution before and after treatment is obtained by AES-ICP. The effectivity of zeolite bearing tuff is determined through a series of experiments under batch conditions from single ion solutions, whereby the main parameters are the effects of initial pH of solution, mass of adsorbent, initial metal concentration in solution, contacting time and competing cations. The maximum capacity of zeolite bearing tuff for removal of lead ions from solution is determined by equilibrium studies. The experimental obtained data are fitted with Freundlich and Langmuir adsorption models. The experimental data are better fitted with Langmuir adsorption isotherm. Zeolite bearing tuff is effective adsorbent for treating acid mine drainage. The results showed that 99% of lead ions are removed from acid mine drainage, i.e. the concentration of lead ions from 0.329 mg/dm3 decrease to 0.002 mg/dm3. The pH value of acid mine drainage from 3.90 after treatment with zeolite bearing tuff increases to 5.36.
Źródło:
Archives of Environmental Protection; 2018, 44, 1; 87-96
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Employment of Ca2+-rich MgO nanoparticles for effective treatment of real acid mine drainage
Autorzy:
Mothetha, Matome
Kebede, Kefeni
Masindi, Vhahangwele
Msagati, Titus
Powiązania:
https://bibliotekanauki.pl/articles/24201027.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
dewatering of mine
acid mine waters
acid mine drainage
AMD
PHREEQC
odwadnianie kopalni
kwaśne wody kopalniane
Opis:
The efficacy of Ca2+-rich MgO nanoparticles for the effective treatment of real acid mine drainage (AMD) was evaluated. The optimized parameters include the feedstock dosage and contact time. The experimental results were underpinned using state-of-the-art analytical techniques and instruments such as FTIR, HR-FIB/SEM, EDS, XRF, and XRD. The pH REDOX equilibrium (in C language) (PHREEQC) model was also employed to complement experimental results. Optimum conditions were observed to be 45–60 min of mixing time, ≥10 000 mg/dm3 of feedstock dosage, i.e., Ca2+-rich MgO nanoparticles, and ambient temperature and pH. The metal content (Fe3+, Mn2+, Cr2+, Cu2+, Ni2+, Pb2+, Al3+, and Zn2+) embedded in AMD matrices was practically removed (≥99% removal efficacies) whilst the sulfate was also attenuated humongous (≥40%). The PHREEQC predicted metals to exist as multi-valent including carbonates and other chemical complexes. Chemical species in real AMD were predicted to precipitate as metals hydroxides, (oxy)-hydroxides, carbonates, and (oxy)-hydro-sulfates. Henceforth, the use of Ca2+-rich MgO nanoparticles was proved to be effective in the treatment of AMD from coal mining activities. However, a polishing technology will be required to further remove residual sulfates. This could be pursued to recover sulfate in valuable form and then reclaim drinking water for domestic purposes or other defined uses (end-use). This will then be the most effective closed-loop approach in the management of AMD under the circular economy (CE) concept.
Źródło:
Environment Protection Engineering; 2023, 49, 1; 25--44
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Active Physical Remediation of Acid Mine Drainage: Technologies Review and Perspectives
Autorzy:
Mulopo, Jean
Powiązania:
https://bibliotekanauki.pl/articles/2105273.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ion-exchange
acid mine drainage
electrochemical
adsorption
membrane process
active physical treatment
Opis:
The successful acid mine drainage (AMD) treatment needs site-specific installation and implementation, as well as the deployment of technology that is compatible with the pollutants contained in the AMD. If key by-products of the AMD can be recovered, the financial sustainability of the AMD remediation method may be greatly improved. Additional research into novel and innovative solutions is necessary to advance in this direction. To accomplish this, it is necessary to have a complete awareness of current remediation technologies that are available and accessible. Active physical treatment methods such as ion exchange, adsorption, electrochemistry, and membrane techniques were examined in this article. Membrane technology excels in terms of ease of use, versatility, and environmental effect but produces brine streams the management of which remains vital for future adoption of the technology. Liquid membranes (LM), Micellar Enhanced Ultra-Filtration (MEUF), and Polyelectrolyte Enhanced Ultra-Filtration (PEUF) are all innovative membrane technologies that may provide some possibilities for metal recovery from chemical sludge and/or brine streams. Electrochemical technologies are considered an attractive alternative for AMD treatment, because they require only electricity as a consumable and can treat AMD to high standards by removing metals via (co)precipitation and sulfate via ionic migration (when an anion-exchange membrane is used in the configuration), while producing significantly less sludge. However, the accepted shortcomings include membrane/electrode fouling produced by (co)precipitates on the active surfaces necessary for the process, a lack of understanding regarding the effective scaling up to industrial scale, and the relatively expensive capital expenditure (CAPEX) required. The removal of heavy metals from AMD effluents by adsorption has a number of technical and environmental benefits, including high efficiency, and environmental friendliness. Despite its benefits, this technique has certain hurdles, such as the production process for low-cost adsorbents.
Źródło:
Journal of Ecological Engineering; 2022, 23, 6; 148--163
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of Trace Elements, Rare Earth Elements and Ecotoxicity in Sediments of the Kosva Bay, Perm Region (Russia)
Autorzy:
Ushakova, Evgeniya
Menshikova, Elena
Blinov, Sergey
Vaganov, Sergey
Perevoshchikov, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2086373.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
trace element
rare earth elements
sedimentation
bottom sediment
ecotoxicity
acid mine drainage
Opis:
Over a long period of time, a huge amount of technogenic bottom sediments has been accumulating in the Kosva Bay with significant concentrations of amorphous iron and aluminium hydroxides, which, in turn, are active sorbents of pollutants. This study examines the distribution of trace elements and rare earth elements and their toxicity in the Kosva Bay of the Kama Reservoir (Perm Region, Russia). In the middle reach, the Kosva River crosses the Kizel coal basin, where acid mine water is discharged from closed mines. The average content of trace elements in the samples of bottom sediments of the bay varies from 0.10 mg/kg (Se) to 176.36 mg/kg (Ba). The amount of rare earth elements varies from 66.8 to 83.6 mg/kg. The ecological significance of trace elements and rare earth elements was studied using an element-by-element assessment (EF and Igeo), Potential Ecological Risk Index (RI), Mean Probable Effect Concentration Quotient (PECQ), and two bioassays (Daphnia magna Straus and Scenedesmus quadricauda (Turp.) Breb. The highest Hg enrichment was found at two sampling points. Taking into account the average value of Igeo, the pollution by Co, V, Nb, Hg, Sn, Zn, Sm, Ni, Cr, and Gd is the highest and corresponds to extremely contaminated category. The RI values indicate that pollution categories vary from moderate risk to considerable risk. According to mean PECQ values, bottom sediments of the bay have moderate potential toxicity towards biological communities. Results of chronic and acute toxicity on test objects D. magna and Scenedesmus quadricauda Breb show the water extract from bottom sediments having no effects on the test objects. The results of the study show that in order to assess the quality of bottom sediments, an integrated approach, combining chemical and ecotoxicological analyses, is needed.
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 1--16
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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