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    Wyświetlanie 1-3 z 3
    Tytuł:
    Źródła oraz metody badań związków arsenu w próbkach środowiskowych
    Sources and methods of determination of arsenic compounds in environmental samples
    Autorzy:
    Burzyńska, O.
    Siebielska, I
    Powiązania:
    https://bibliotekanauki.pl/articles/1819341.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    soil
    bioavailability
    incubation
    fate
    Opis:
    The article is a review of information available in literature about arsenic and its compounds. The paper characterizes forms of arsenic that can be found in the environment, main chemical and physical transformations it undergoes, application of arsenic in industry and agriculture, dangers associated with arsenic contamination and its toxicity for humans and the environment. Natural and artificial sources of arsenic are discussed. Final part presents fractionating of arsenic in detail, as well as main methods of arsenic determination in the laboratory.
    Źródło:
    Rocznik Ochrona Środowiska; 2012, Tom 14; 417-426
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wstępna ocena możliwości zastosowania β-cyklodekstryny jako czynnika wpływającego na skuteczność oczyszczania gazów metodą biofiltracji
    Preliminary Assessment of the Use of β-cyclodextrin as a Factor Affecting the Efficiency of Purifying Gases by Biofiltration
    Autorzy:
    Sówka, I.
    Miller, U.
    Adamiak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818077.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    biodegradacja
    biodostępność
    zanieczyszczenia hydrofobowe
    surfaktanty
    biodegradability
    bioavailability
    hydrophobic pollutants
    surfactants
    Opis:
    Biotechnological processes are widely used in environmental engineering. However, a common problem associated with the biological method relating to the removal of certain pollutants from the environment is low solubility in water, which significantly limits the possibility of their biodegradation or washing. Therefore, a growing interest in the application of surfactants, for instance, for the remediation of soil, is observed. Surfactants can significantly influence the removal of pollutants from the environment. Not only do they increase the solubility of hydrophobic compounds, but also aid in their leaching and increase their bioavailability. Moreover, the use of surfactants by leaching of pollutants is relatively cheap compared to the extraction with organic solvents. As in the case of bioremediation of soil, the use of surfactants could potentially affect the growth of the removal efficiency of hydrophobic pollutants from combustion gases by increasing their bioavailability. This paper presents the results of preliminary laboratory studies using β cyclodextrin in purifying of air contaminated by toluene vapors by biofiltration. In the assumed concentrations (1, 2, 3 g/dm3) the positive effect of cyclodextrin on toluene biofiltration was not observed.
    Źródło:
    Rocznik Ochrona Środowiska; 2016, Tom 18, cz. 2; 100-109
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chemofitostabilizacja gleby zanieczyszczonej kadmem, cynkiem i ołowiem
    Chemophytostabilisation of Soil Contaminated with Cadmium, Lead and Zinc
    Autorzy:
    Grobelak, A.
    Kacprzak, M.
    Grosser, A.
    Napora, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1819023.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    chemofitostabilizacja
    gleba
    metale ciężkie
    heavy metals
    amendments
    bioavailability
    biosolids
    immobilization
    stabilization
    remediation
    mobility
    compost
    zn
    Opis:
    Assisted phytostabilisation involves the use of plants and soil additives for physical stabilization of the soil and chemical immobilization of contaminants. This technique aims to establish a vegetation cover with metal-tolerant plants and thus reduce leaching of metals. The main aim is to reduce the risk of incorporation of metal into the food chain. In the conducted experiment contaminated soil was collected from the area surrounding a zinc smelter in Miasteczko Slaskie, in the Silesia region of Poland. Soil in the study area has been contaminated with metals, especially Cd, Pb and Zn. Moreover, soils of the study area are also acidified. The role of sewage sludge and inorganic amendments as an immobilising agents in the attenuating phytostabilisation of metal-contaminated soil was evaluated using grass species Festucaarundinacea Schreb. The biosolid used was anaerobically digested sewage sludge, collected from the industrial waste water treatment plant and juices manufacturer (food industry). The soil was mixed with sewage sludge (sewage sludge accounted for 1and 3% of dry weight), lime and inorganic fertilizers (potassium phosphate, TSP at 0.8% each). A plant growth experiment was conducted in a growth chamber for 10 weeks. The plants were grown under artificial conditions, suitable for proper growth of plants. Plants growing on amended soil were devoid of any macroscopic symptoms of metal toxicity or nutrient deficiency, in contrast to plants grown on non-amended soil, where growth was inhibited and some phytotoxic effects were observed. For amended soil, plant growth was most likely influenced by improved soil conditions due to nutrient-rich amendments and metals immobilisation. Mobile fractions of metals decreased in amended soil, and the same pattern was observed for metal concentrations in plant tissues. However, the best results were obtained for the variants of combined application of sewage sludge and inorganic amendments. All investigated metals accumulated mainly in root tissues in combination with sewage sludge application. A significant reduction in metal uptake by plants was achieved after sewage sludge application, which is attributed to decreased bioavailability and the stabilisation of metals in soil. In the experiment the introduction of soil liming treatment allowed to maintain the pH at a constant level after 10 weeks of the experiment (5.5–7) (Fig. 1). The K5-K10 variants achieved a significant reduction in bioavailable forms (0.01 M CaCl2 extraction). In a study of biomass (Fig. 3) the highest yield (5.5 g DM) was obtained for the combined use of a combination of potassium and phosphate deposits and combinations of superphosphate and combined use of sewage sludge (2.5 g DM/pot). The highest immobilization effects were obtained for combined application of sewage sludge, lime fertilizer and superphosphate or potassium phosphate as compared to other options. The highest degree of immobilization of three tested heavy metals: cadmium, zinc and lead was obtained only with the application of sewage sludge and mineral amendments at a dose of TW +FP 0.8% + 1% d.m. sewage sludge. Effective process of chemophytostabilisation with the use of grass and organic additive and inorganic additives in situ sandy areas and heavily contaminated with heavy metals, can be obtained solely with the combined use of investigated additives and treatment.
    Źródło:
    Rocznik Ochrona Środowiska; 2013, Tom 15, cz. 2; 1982-2002
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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