- Title
- Impact of bare and CMC-coated Fe oxide nanoparticles on microbial activity and immobilising zinc, lead, and cadmium in a contaminated soil
- Creator
- Bidast, Solmaz; Golchin, Ahmad; Baybordi, Ahmad; Mohseni, Amir; Naidu, Ravi
- Relation
- Archives of Agronomy and Soil Science Vol. 69, Issue 11, p. 2104-2120
- Publisher Link
- http://dx.doi.org/10.1080/03650340.2022.2137875
- Publisher
- Taylor & Francis
- Resource Type
- journal article
- Date
- 2022
- Description
- 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.
- Subject
- carboxymethyl cellulose; Fe oxide nanoparticles; microbial biomass carbon; potentially toxic elements; soil respiration; SDG 13; Sustainable Development Goals
- Identifier
- http://hdl.handle.net/1959.13/1488751
- Identifier
- uon:52526
- Identifier
- ISSN:0365-0340
- Language
- eng
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