Nanotechnology for the bioremediation of heavy metals and metalloids

Sharma, Urja; Sharma, Jai Gopal

doi:10.7324/jabb.2022.100504

Cited by 5 publications

(2 citation statements)

References 87 publications

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“…economic and ecological aspects. The studies report the consequences and hazardous impact of heavy metals and metalloids which could be treated through biogenic nanoparticles [ 50 ]. The HMs can be easily removed from the wastewater using NM adsorbents.…”

Section: Nanotechnological Approaches For Wastewater Treatmentmentioning

confidence: 99%

Exploring Microbial-Based Green Nanobiotechnology for Wastewater Remediation: A Sustainable Strategy

Malik

Dhasmana

Preetam³

et al. 2022

Nanomaterials

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Water scarcity due to contamination of water resources with different inorganic and organic contaminants is one of the foremost global concerns. It is due to rapid industrialization, fast urbanization, and the low efficiency of traditional wastewater treatment strategies. Conventional water treatment strategies, including chemical precipitation, membrane filtration, coagulation, ion exchange, solvent extraction, adsorption, and photolysis, are based on adopting various nanomaterials (NMs) with a high surface area, including carbon NMs, polymers, metals-based, and metal oxides. However, significant bottlenecks are toxicity, cost, secondary contamination, size and space constraints, energy efficiency, prolonged time consumption, output efficiency, and scalability. On the contrary, green NMs fabricated using microorganisms emerge as cost-effective, eco-friendly, sustainable, safe, and efficient substitutes for these traditional strategies. This review summarizes the state-of-the-art microbial-assisted green NMs and strategies including microbial cells, magnetotactic bacteria (MTB), bio-augmentation and integrated bioreactors for removing an extensive range of water contaminants addressing the challenges associated with traditional strategies. Furthermore, a comparative analysis of the efficacies of microbe-assisted green NM-based water remediation strategy with the traditional practices in light of crucial factors like reusability, regeneration, removal efficiency, and adsorption capacity has been presented. The associated challenges, their alternate solutions, and the cutting-edge prospects of microbial-assisted green nanobiotechnology with the integration of advanced tools including internet-of-nano-things, cloud computing, and artificial intelligence have been discussed. This review opens a new window to assist future research dedicated to sustainable and green nanobiotechnology-based strategies for environmental remediation applications.

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Section: Nanotechnological Approaches For Wastewater Treatmentmentioning

confidence: 99%

Exploring Microbial-Based Green Nanobiotechnology for Wastewater Remediation: A Sustainable Strategy

Malik

Dhasmana

Preetam³

et al. 2022

Nanomaterials

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“…The surface area of bio-synthesized α-Fe 2 O 3 NPs were four times higher compared to the ones obtained by traditional methods and exhibited double reactivity 8 . Also, the green synthesis of metal and metalloid NPs is of interest due to their applications in removing potentially toxic elements from industrial effluents and recovering metals and metalloids from leachates and wastes of ore refining plants 9,10 .…”

mentioning

confidence: 99%

Shortening the sulfur cell cycle by a green approach for bio-production of extracellular metalloid-sulfide nanoparticles

Asghari-Paskiabi

Imani

Rafii-Tabar

et al. 2023

Sci Rep

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In the present study, a new approach was introduced regarding the extracellular synthesis of selenium sulfide micro/nano-particles using Saccharomyces cerevisiae in different ammonium sulfate supplementation and in the presence of sodium selenosulfate precursors (S1) and a blend of selenous acid and sodium sulfite (S2). In S1, only cell supernatant exposed to ammonium sulfate was able to reduce sodium selenosulfate. Whereas, in S2, cell supernatant in both pre-conditions of with or without ammonium sulfate (S2 + or S2−) were able to reduce selenous acid and sodium sulfite. Electron microscopy, also indicated that selenium sulfide NPs were successfully synthesized with average size of 288 and 332 nm for S2 + and S2− in SEM and 268 and 305 nm in TEM. Additionally, elemental mapping by energy-dispersive x-ray analysis confirmed the presence of sulfur/selenium elements in the particles in a proportion of 24.50 and 23.31 for S2− and S2 + , respectively. The mass spectrometry indicated the probability of Se2S2, SeS1.1, Se2, Se, SeS5, SeS3, Se3S5/Se5, Se3/SeS5, Se6, Se4/SeS7, Se2.57S5.43/Se2S2 and Se4S/Se2S6 molecules for S2 + and of Se, Se2, Se3S5/Se5, Se6 and Se4 species for S2−. In FTIR spectra, primary (i.e. 1090–1020 and 1650–1580 cm−1) and secondary (1580–1490 cm−1) amine bands duly confirmed the protein corona around the NPs.

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