Nanoparticles in the Aquatic Environment: The Risks Associated with Them and the Possibilities of Their Mitigation with Microalgaeстатья
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Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
Аннотация:Nanoparticles (NPs) are dangerous micropollutants that exhibit biotoxicity even in low (nanogramrange) concentrations. Apart from direct toxicity to living organisms, NPs can absorb and transfer organic orinorganic toxicants as well as potentiate the toxicity of other micropollutants. Increasing use of NPs in industrial and domestic applications leads to their increased production and discharge into the environment givingrise to diverse risks for ecosystems. These risks are exacerbated by the resilience of NPs to biodegradation innatural ecosystems and traditional wastewater treatment plants. Efficient NP removal technologies are complex and expensive, so they cannot be affordably replicated in common wastewater treatment plants. Despitethe risks associated with NPs, humanity will not abandon their use in the nearest future, since NPs are nowat the foundation of many modern technologies. The biodestruction and biosorption of NPs using microalgaecultures and algal-bacterial consortia are considered promising approaches regarding environmental safetyand the conservation of natural resources. However, the progress of this approach is hindered by the paucityand fragmentary nature of the information about the effects of NPs on microalgae cells and microbial communities. This review attempts to fill this gap, at least partially, by considering common industrial NP typesbased on metals and their oxides as well as carbon nanomaterials. The pathways of their entry into aquaticecosystems, toxicity to living organisms, accumulation and biotransformation in cells, synergistic effects ofNPs in combination with heavy metals and antibiotics, as well as methods for the bio-removal of NPs andnanomaterials from aquatic ecosystems using microalgae are discussed