Yazar "Majewski, Grzegorz" seçeneğine göre listele

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Immobilization of potentially toxic elements (PTE) by mineral-based amendments: Remediation of contaminated soils in post-industrial sites
    (MDPI AG, 2020) Radziemska, Maja; Bȩś, Agnieszka; Gusiatin, Zygmunt Mariusz; Majewski, Grzegorz; Mazur, Zbigniew; Bilgin, Ayla; Jaskulska, Iwona; Brtnicky, Martin
    In many post-industrial sites, the high contents and high mobility of different potentially toxic elements (PTEs) make the soils unsuitable for effective management and use. Therefore, immobilization of PTE seems to be the best remediation option for such areas. In the present study, soil samples were collected in post-industrial areas in Northeastern Poland. The analyzed soil was characterized by especially high contents of Cd (22 mg·kg?1), Pb (13 540 mg·kg?1), and Zn (8433 mg·kg?1). Yellow lupine (Lupinus luteus L.) and two types of mineral-based amendments were used to determine their combined remediation effect on PTE immobilization. A greenhouse pot experiment was conducted to evaluate the influence of chalcedonite and halloysite on plant growth, chlorophyll a fluorescence, the leaf greenness index (SPAD), PTE uptake, and the physicochemical properties and toxicity of soil. The application of chalcedonite resulted in the greatest increase in soil pH, whereas halloysite contributed to the greatest reduction in the contents of Ni, Pb, Zn, and Cr in soil, compared with the control treatment. The addition of halloysite significantly increased plant biomass. The application of mineral-based amendments increased the ratio of variable fluorescence to maximum chlorophyll fluorescence (Fv/Fm) in yellow lupine leaves. The leaf greenness index was highest in plants growing in soil amended with chalcedonite. The results of this study suggest that mineral-based amendments combined with yellow lupine could potentially be used for aided phytostabilization of multi-PTE contaminated soil in a post-industrial area.
  • Küçük Resim
    Öğe
    Nanoporous zeolite and its effect on the immobilization of trace elements in soils from scrap landfills under aided phytostabilization
    (Wiley Online Library, 2022) Radziemska, Maja; Blazejczyk, Aurelia; Gusiatin, Mariusz Z.; Cydzik-Kwiatkowska, Agnieszka; Majewski, Grzegorz; Bilgin, Ayla
    The rising prerequisite for developing novel green remediation methods for trace-ele-ment-contaminated lands is allied to the necessity to really mend the soil environs.The effectiveness of zeolite-aided phytostabilization (AP) of soil contaminated withtrace elements (TEs), from a scrap yard, usingLolium perenneas the plant for testing,was determined and discussed. The variability and activity of the rhizospheric bacte-rial community were also examined. The initial soil used in the AP experiment wascharacterized by especially high total contents of Zn, Pb, Cu and Cd. The TE totalcontents in roots and aboveground parts ofL. perenneas well as in the phytostabil-ized soil materials were analyzed with flame atomic absorption spectrometry. Thestudy revealed that the addition of natural zeolite into TE-contaminated soilincreased the relative plant biomass as well as the soil pH value as compared to thephytostabilized non-amended series, whereas the total contents (with respect to anabsolute value) of Zn, Pb, Cu and Cd were generally higher in roots than in theaboveground parts ofL. perenne. In particular, the incorporation of zeolite to the soilcontributed most significantly to the considerable relative decrease in the total con-tents of Cu, Pb, Cd and Zn in the soil, as well as the content of bioavailable and leach-able speciations of Cd, Cu, Zn and Pb extracted from the soil using CaCl2solution ascompared to the non-amended series. In the phytostabilized zeolite-amended soil,the overall bacterial diversity decreased but the presence of zeolite favoured thegrowth of microorganisms belonging toGammaproteobacteria,Planctomycetia, andThermomicrobia, in particular, the generaMycobacterium,Williamsia, andProchlorococcus