Biological, Chemical and Nanosorption Approaches in Remediation of Metal Wastes

The present review draws on a wide range of resources available on bioderived, bioconjugated, chemisorption technologies and strategies known for degradation of heavy metals. The prevalent escalation in application of heavy metals, chemically synthesized dyes and xenobiotic compounds has created major environmental disruptions. Industries, mining, vehicles, and household activities release heavy metals and their derivatives into a multitude of water resources. Contaminated water provides an easy ingress of these contaminants into human and animal system resulting in exposure related disorders like mutagenesis, carcinogenesis and other serious health issues. Minimization and management of such chemicals demands high end technology, equipment, time, effort and cost. Thus, the less demanding but more effective strategy would be adoption of biosorption, using whole plant/microbial cells, components, derived and/or synthesized materials to convert toxic compounds/metals into less toxic forms. This review documents, critically analyses and collates heavy metals from mining, processing and industrial effluents followed by remediation technologies based on plants and microbes. Each section in the latter is discussed in detail with relevant examples that illustrate biosorption, bioderived, bioconjugated, chemisorptions, and bioremediation strategies. In the final analysis, though plant materials exhibit efficient removal strategies, particularly when augmented by nanomaterial conjunction, the commercial scale and viability remain to be validated

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Prospects of nanosorption and photocatalysis in remediation of oil spills

Shaibu

Inam

Moses

et al. 2023

J. Nig. Soc. Phys. Sci.

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Nanoremediation approaches have been applied to remove oil from surface and ground water as oil spills have been found to have long-term negative consequences for the ecosystem. Nanoremediation via the nanosorption mechanism of different environmental matrices in the world at large is at its formative stages despite the alarming and extensive prevalence of petroleum related environmental pollution. Over 9 million barrels of oil have been leaked in the last five decades, making that ecosystem one of the most deteriorated by oil exploration and extraction activities. The goal of this research is to assess the current status, trends, and future prospects of the nanosorption of surface and ground water in oil spill regions. High surface area of nanomaterials, wide spectrum of treatable contaminants, non-generation of intermediate or secondary products, as well as speed and extent of contaminant destruction give nanoremediation a superior comparative edge over other treatment technologies. Notably, the remediation efficiency of a cleanup is highly dependent on the type of material and treatment routes employed. It is imperative to employ a concerted and practical approach to the development of nanotechnology to combat the bedeviling oil pollution challenges faced in oil producing counties.

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Biological, Chemical and Nanosorption Approaches in Remediation of Metal Wastes

Cited by 3 publications

References 117 publications

Water purification using recyclable nano composite

Water purification using recyclable nano composite

Bioderived and Bioconjugated Materials for Remediation of Heavy Metals and Dyes from Wastewater

Prospects of nanosorption and photocatalysis in remediation of oil spills

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