| Autor: |
Bidast, Solmaz, Golchin, Ahmad, Baybordi, Ahmad, Mohseni, Amir, Naidu, Ravi |
| Předmět: |
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| Zdroj: |
Archives of Agronomy & Soil Science; Sep2023, Vol. 69 Issue 11, p2104-2120, 17p |
| Abstrakt: |
The potential of bare and carboxymethyl cellulose (CMC)-coated iron oxide nanoparticles (FeONPs), including goethite, hematite, and magnetite, for stabilisation of lead (Pb), zinc (Zn), and cadmium (Cd) in contaminated soil was investigated in a greenhouse experiment. The results showed that FeONPs application decreased the availability of potentially toxic elements in soil, and CMC-coated NPs were more effective than bare NPs. CMC-coated goethite proved to be the most effective treatment in reducing the Zn and Cd availability. Its application decreased the diethylenetriaminepentaacetic acid (DTPA) extractable Zn and Cd concentrations by 49% and 56%, respectively. CMC-coated magnetite was the most effective treatment for the stabilisation of Pb. Its application decreased the DTPA-extractable Pb by 56%. Carbon dioxide (CO2) emission and microbial biomass carbon (MBC) were higher in samples treated with CMC-coated FeONPs than bare FeONPs-treated samples, indicating that CMC coating NPs enhanced microbial activity. CO2 emission and MBC were approximately three and five times higher, respectively, in samples treated with CMC-coated goethite than the control. This study suggests that coating of bare FeONPs with CMC improves the adsorption capacity of NPs, making them more chemically reactive, and is a possible technique to reduce the likely antibacterial effects of bare FeONPs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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