A Review on Ecotoxicity of Zinc Oxide Nanoparticles on Freshwater Algae

Bhuvaneshwari, M.; Iswarya, V.; Chandrasekaran, N.; Mukherjee, Amitava

doi:10.1007/978-3-030-05144-0_10

Cited by 4 publications

(3 citation statements)

References 64 publications

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“…In general, the lower dose of microalgae and nanoparticles in this process with smaller nanoparticle sizes results in higher performance efficiencies. Nanoparticles with smaller sizes are more likely to pass through the cell walls and interact with cytomembrane and organelles (Bhuvaneshwari et al, 2018;Rana and Prajapati, 2023). In comparison, larger sizes or aggregates of nanoparticles that fail to get through the cell wall can accumulate on the cell surface (Khan et al, 2022;Yang et al, 2022b).…”

Section: Microalgae Biomass Harvestingmentioning

confidence: 99%

Nanomaterials and their role in advancing biodiesel feedstock production: A comprehensive review

2023

Biofuel Res. J.

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Sustainable socio-economic development largely depends on the sustainability of the energy supply from economic, environmental, and public health perspectives. Fossil fuel combustion only meets the first element of this equation and is hence rendered unsustainable. Biofuels are advantageous from a public health perspective, but their environmental and economic sustainability might be questioned considering the conflicts surrounding their feedstocks, including land use change and fuel vs. food conflict. Therefore, it is imperative to put more effort into addressing the downsides of biofuel production using advanced technologies, such as nanotechnology. In light of that, this review strives to scrutinize the latest developments in the application of nanotechnology in producing biodiesel, a promising alternative to fossil diesel with proven environmental and health benefits. The main focus is placed on nanotechnology applications in the feedstock production stage. First, the latest findings concerning the application of nanomaterials as nanofertilizers and nanopesticides to improve the performance of oil crops are presented and critically discussed. Then, the most promising results reported recently on applying nanotechnology to boost biomass and oil production by microalgae and facilitating microalgae harvesting are reviewed and mechanistically explained. Finally, the promises held by nanomaterials to enhance animal fat production in livestock, poultry, and aquaculture systems are elaborated. Despite the favorable features of using nanotechnology in biodiesel feedstock production, the presence of nanoparticles in living systems is also associated with important health and environmental challenges, which are critically covered and discussed in this work.

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Section: Microalgae Biomass Harvestingmentioning

confidence: 99%

Nanomaterials and their role in advancing biodiesel feedstock production: A comprehensive review

2023

Biofuel Res. J.

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“…Miao et al [44] studied the effects on Thalassiosira pseudonana exposed to ZnO NPs and found that dissolution of Zn 2+ could be the major cause for its toxicity, as revealed in growth inhibition and lower chlorophyll content. Bhuvaneshwar et al [45] reported that ZnO NPs toxicity was strongly dependent on particle morphology and stability. Aravantinou et al [38] investigated the effect of ZnO NPs on freshwater (Chlorococcum sp.…”

Section: Brackish Watermentioning

confidence: 99%

A Multidisciplinary Approach to Evaluate the Effects of Contaminants of Emerging Concern on Natural Freshwater and Brackish Water Phytoplankton Communities

Pastorino

Broccoli²,

Bagolin

et al. 2021

Biology

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Ecotoxicological assays on monospecific phytoplankton have limited application for detecting the effects of environmental pollutants on multiple species communities. With this study, we took an ecotoxicological, ecological, and biochemical approach to evaluate the effects of two contaminants of emerging concern (zinc oxide nanoparticles, ZnO NPs, and potassium dichromate, K2Cr2O7) at different concentrations (K2Cr2O7 5.6–18–50 mg/L; ZnO NPs 10–100–300 mg/L) on natural freshwater and brackish water phytoplankton communities. Cell density and absorbance values decreased in freshwater and brackish water phytoplankton communities after exposure to ZnO NPs (100 mg/L and 300 mg/L only for freshwater), whereas growth rate was increased in both freshwater and brackish water phytoplankton communities after exposure to ZnO NPs 10 mg/L. Differently, there was no clear relationship between concentration and inhibition growth after exposure to K2Cr2O7: the lowest cell density was recorded after exposure to 18 mg/L. Moreover, the evenness index value was lower compared to the other concentrations, indicating the growth of a few, albeit resistant species to higher K2Cr2O7 concentrations. Generally, Bacillariophyceae and Dinoficee were prevalent in phytoplankton cultures after exposure to ZnO NPs and K2Cr2O7. The Shannon-Wiener index was slightly higher in the negative than the positive controls, but diversity was low after all treatments in both ecotoxicological assays. The evenness index was always very close to zero, indicating the numerical predominance of one or very few species. Finally, the decrease in chlorophyll-a and pheophytin-a in both ecotoxicological assays indicated a change in photosynthetic activity. Our findings provide evidence for alterations in natural phytoplankton after exposure to emerging contaminants that can disrupt an entire ecosystem’s integrity.

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“…Nanoparticles TiO 2 (npTiO 2 ), zinc oxide (npZnO), cerium oxide (npCeO 2 ), copper oxide (npCuO), and silver (npAg) are the most studied metal and metal oxide nanoparticles which have toxic effects on freshwater biota and food web dynamics. Even though the NP toxicity studies on freshwater organisms (algae, zooplankton, and fish) were carried out on different experimental models, the impact of food web on NP toxicity is still not clear [8][9][10][11][12]. The behaviors of NPs in the aquatic system include aggregation, flocculation, redox reactions, speciation, dissolution (release of + ions like Zn 2+ ), surface modifications (interactions with other metal and pollutants), and complexation with natural organic matter.…”

Section: Nanoparticlesmentioning

confidence: 99%

Introductory Chapter: Current Status of Freshwater Ecosystems

Gökçe¹

2019

Limnology - Some New Aspects of Inland Water Ecology

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A Review on Ecotoxicity of Zinc Oxide Nanoparticles on Freshwater Algae

Cited by 4 publications

References 64 publications

Nanomaterials and their role in advancing biodiesel feedstock production: A comprehensive review

Nanomaterials and their role in advancing biodiesel feedstock production: A comprehensive review

A Multidisciplinary Approach to Evaluate the Effects of Contaminants of Emerging Concern on Natural Freshwater and Brackish Water Phytoplankton Communities

Introductory Chapter: Current Status of Freshwater Ecosystems

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