BioMagnetic-Graphene-Aminoclay Nanocomposites for Sustainable Adsorption and Precious Metal Recovery from Industrial Waste Effluents

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dc.contributor.authorYap, P.L.
dc.contributor.authorTran, T.T.A.
dc.contributor.authorYu, L.
dc.contributor.authorTran, T.
dc.contributor.authorLosic, D.
dc.date.issued2024
dc.description.abstractThe recovery of precious metals from waste effluents using low-cost adsorbents is arousing widespread attention. This attention is driven by the depletion of natural resources, increasing industrial demand for these metals, and intensified awareness of environmental protection. In response to the growing trend of waste valorization, we have developed a novel, cost-effective, and environmentally friendly adsorbent that combines bio-magnetic nanoparticles derived from bacterial biofilm waste with graphene oxide (GO) and aminoclay. This biomag-GOaminoclay nanocomposite adsorbent is synthetised using a simple, environmentally friendly and scalable sonication-assisted electrostatic stabilization approach. The adsorption performance for precious metal is demonstrated for silver ions recovery showing exceptional adsorption with nearly 100 % uptake of Ag+ ions across a wide pH range (pH 2–9), rapid adsorption kinetics, a high maximum sorption capacity (98.04 ± 5.6 mg/g) and 100 % silver recovery over five adsorption-desorption cycles. Furthermore, the biomag-GO-aminoclay facilitates the in-situ reduction of Ag+ ions to Ag0 , thereby enhancing the economic viability of producing value-added silver products while promoting sustainable environmental remediation practices. Overall, this research underlines the potential of new biomag-GO-aminoclay adsorbent as a versatile and effective solution for recovering precious metals from industrial waste streams, offering a pathway towards both economic benefit and environmental stewardship.
dc.description.statementofresponsibilityPei Lay Yapa, Trong Tuan Anh Tran, Le Yu, Thanh Tung Tran, Dusan Losic
dc.identifier.citationAdvanced Nanocomposites, 2024; 1(1):304-317
dc.identifier.doi10.1016/j.adna.2024.09.001
dc.identifier.issn2949-9445
dc.identifier.orcidYap, P.L. [0000-0001-7346-8139]
dc.identifier.orcidLosic, D. [0000-0002-1930-072X]
dc.identifier.urihttps://hdl.handle.net/2440/143481
dc.language.isoen
dc.publisherElsevier BV
dc.relation.granthttp://purl.org/au-research/grants/arc/IH150100003
dc.relation.granthttp://purl.org/au-research/grants/arc/IH210100025
dc.rights© 2024 Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
dc.source.urihttp://dx.doi.org/10.1016/j.adna.2024.09.001
dc.subjectGraphene; Nanocomposites; Magnetic nanoparticles; Silver recovery
dc.titleBioMagnetic-Graphene-Aminoclay Nanocomposites for Sustainable Adsorption and Precious Metal Recovery from Industrial Waste Effluents
dc.typeJournal article
pubs.publication-statusPublished

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