Carbon nanotubes, which are comprised of graphene, one of the world's strongest materials, have shown features that can be employed in energy storage devices, electron emission devices, and environmental engineering. Researchers have recently concentrated their efforts on identifying the impact of carbon nanotubes on soil microbes and plants.
The goal of this research was to see if multi-walled carbon nanotubes would alter Phaseolus vulgaris growth as well as prevent the growth of certain soil microorganisms.
Methods: On bean plants grown in hydroponic circumstances and on selected soil bacteria, the impacts of Multi-Walled Carbon Nanotubes were studied. The seedlings were treated to varying concentrations of distributed multi-walled carbon two weeks after germination. 0 ug (control), 50 g, 250 g, 500 g, 750 g, and 1000 g mL l50 g, 250 g, 500 g, 750 g, and 1000 g mL-1 were the varied concentrations. The plants' growth was measured weekly, as well as the diameter of the leaves, their length and width, the roots, and the fruits. Mesorhizobium sp. and Nitrosomonas stercoris cultures were incubated in the BioScreen reader after being exposed to 0ug (control), 50 g, 250 g, 500 g, 750 g, and 1000 g mL-1 of dispersed MWCNTs. For 24 hours, the optical density was reported every 30 minutes.
Results: Bean plants demonstrated resistance to multi-walled carbon nanotubes at 50 g/mL, however plants at 250 g/mL and 500 g/mL of MWCNTs showed lower growth and development, as well as plant death. MWCNT aliquots of 750 g/mL and higher reduced microbial biomass. Microbes are expected to be stressed in the presence of high concentrations of carbon nanotubes, and direct contact with CNTs could damage their cell membrane, resulting in cell death.
Conclusion: When releasing multi-walled carbon nanotubes into the soil or environment, the concentration should be set at a maximum of 500 g mL-1, according to the findings of this study.
Author (S) Details
Kadiatou Keita
Alabama A&M University, Alabama, USA
Florence Okafor
Alabama A&M University, Alabama, USA.
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