Wyniki wyszukiwania - Biblioteka Nauki

Ten serwis zostanie wyłączony 2025-02-11.

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

2 2024

2 Kostrz-Sikora P.

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: industrial wastewater treatment plants

Sortuj według:

Ogranicz wyniki do:

An investigation of rare earth elements in sewage sludge generated in Poland

100%

Kostrz-Sikora P.

Geology, Geophysics and Environment

2024

tom Vol. 50, no. 4

341--356

According to Statistics Poland, an average of around 1 million tonnes DM of sewage sludge has been generated in Poland annually over the past several years, of which approximately 30% has been used in nature, e.g. in agriculture, to grow plants for compost production, or for land reclamation (Statistics Poland 2004–2022). Most research on sewage sludge has focused on investigating its fertilizing value (nitrogen, phosphorus), identi-fying the composition of organic matter and determining the total content of heavy metals (including primarily cadmium, copper, nickel, lead, zinc, mercury and chromium) and the forms of their occurrence that determine their mobility and bioavailability. The occurrence of rare earth elements (REEs) in sewage sludge has hardly been addressed in research, even though their presence in production processes and everyday objects is increasingly common. The results presented in this article of studies of the concentrations of individual REEs in sewage sludge from selected industrial and municipal wastewater treatment plants located in Poland indicate that they are significantly lower than the average lanthanide level in the Earth’s crust. This may suggest that anthropogenic sources of REEs do not affect the composition of the wastewater and sludge studied. The calculated median con-centration of ∑REE in sludge from industrial wastewater treatment plants is 9.47 mg/kg, whereas in municipal sewage sludge, the midpoint value for REE concentration is 13.5 mg/kg. Normalization of the obtained results with respect to Post-Archean Australian Shale (PAAS) and to topsoil and subsoil from Poland shows that the sludge is generally depleted in REE relative to the standards used. An assessment of the contamination of sewage sludge with rare earth elements, based on the calculated values of the geoaccumulation index (Igeo) for these ele-ments, also shows that the content of lanthanides in the studied sewage sludge is lower than in the soils of Poland.

Zmienność zawartości pierwiastków śladowych w osadach ściekowych wybranych oczyszczalni ścieków w Polsce

63%

Kostrz-Sikora P.

Przegląd Geologiczny

2024

tom Vol. 72, nr 7

308--324

Environmental policy places great emphasis on the implementation of a circular economy model, in which products and raw materials should remain in circulation for as long as possible and waste generation should beminimized as much as possible. The starting point for the effectiveness of these measures is the identification of opportunities for optimal use of both: raw materials and waste based on knowledge of their chemical composition. In the area of sewage sludge management, most research work to date has focused on investigating its fertilizer value (nitrogen, phosphorus), identifying the composition of organic matter and the content of heavy metals, primarily cadmium, copper, nickel, lead, zinc, mercury and chromium. The occurrence of other trace elements has been studied to a limited extent. Meanwhile, such studies could not only expand the body of information in environmental geochemistry with new data, but could also beusedin the analysis of environmental pressures associated with sewage sludge recovery and disposal processes. In the aspect of the environmental use of sewage sludge, especially in agriculture and for land reclamation, more complete data on the chemical composition of sewage sludge, and thus on the potential pollutant load contained in it, could be useful for decision-making and the implementation of solutions to maintaining the chemical balance and biodiversity of soil ecosystems. This article presents information on the occurrence of 1 7 trace elements determined in 49 sewage sludge samples from different wastewater treatment plants from Poland, both in terms of the types of wastewater treated and the technological processes used.