Bio-derived materials as a green route for precious &amp; critical metal recovery and re-use

Dodson, Jennifer R.; Parker, Helen L.; García, Andrea Muñoz; Hicken, Alexandra; Asemave, Kaana; Farmer, Thomas J.; He, He; Clark, James H.; Hunt, Andrew J.

doi:10.1039/c4gc02483d

Cited by 241 publications

(133 citation statements)

References 196 publications

(75 reference statements)

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“…It is defined as the property of certain biomolecules or types of biomass (biosorbents), to bind and concentrate selected ions or molecules from aqueous solutions by a metabolically-passive process [5]. The mechanisms of biosorption are generally based on physicochemical interactions between adsorbates and the functional groups present on the biomass surface, such as electrostatic interactions, ion exchange, metal ion chelation or complexation [6]. In the last years, biosorption on marine seaweeds, agricultural wastes, forest residues and industrial byproducts, in native or modified forms, have been indicated as promising technologies for the uptake of heavy metals and organic contaminants from waters [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Tannin-based biosorbents for environmental applications – A review

Bacelo

Santos

Botelho

2016

Chemical Engineering Journal

230

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Section: Introductionmentioning

confidence: 99%

Tannin-based biosorbents for environmental applications – A review

Bacelo

Santos

Botelho

2016

Chemical Engineering Journal

230

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“…Because of global modernization and industrialization, pollution caused by the release of heavy metals into the environment has become a critical issue, and thus concerns surrounding the recovery of such heavy metals have been rising (Dodson et al 2015). Among all metals commonly seen in wastes, gold is a noble metal and can be used in luxury jewelry, electronics, and medical applications because of its unique physical and chemical properties such as high biocompatibility and long-term stability (Ramesh et al 2008;Spitzer and Bertazzoli 2004).…”

Section: Introductionmentioning

confidence: 99%

Biofabrication of gold nanoparticles by Shewanella species

2017

Bioresour. Bioprocess.

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Background: Shewanella oneidensis MR-1 (MR-1) and Shewanella xiamenensis BC01 (SXM) are facultative anaerobic bacteria that exhibit outstanding performance in the dissimilatory reduction of metal ions. Shewanella species have been reported to produce metal nanoparticles, but the mechanism and optimization are still not extensively studied and clearly understood. Herein, the effects of pH, biomass, gold ion concentration, and photoinduction are evaluated to optimize gold nanoparticle (Au@NP) production by Shewanella. Results:The highest amount of Au@NPs produced by SXM and MR-1 were 108 and 62 ppm, respectively, at pH 5 when 2.4 g/L biomass was immersed in 300 ppm gold ions and 50 mM lactate under a light intensity of 100 µmol/ m 2 /s. By scanning election microscopy and zeta potential analysis, the proposed mechanism of Au@NP formation was that Shewanella used lactate as electron donors for the Mtr pathway, stimulated by photosensitive proteins resulting in the nucleation of NPs on the cell membrane. Besides, the resting cells retained the ability for biofabrication of nanoparticles for nearly 25 days. Conclusions:The optimal conditions evaluated for Au@NPs production by Shewanella were biomass, pH, ions concentration, and photoinduction. To the best of our knowledge, this is the first attempt to explore a two-step mechanism for Au@NPs formation in Shewanella. First, the HAuCl 4 solution reacted with sodium lactate to form metallic gold ions. Second, the metallic gold ions were adsorbed onto the outer membrane of cell, and the formation of Au@NPs at the surface was triggered. Shewanella-based Au@NPs production could be a potential ecofriendly solution for the recovery of Au ions from secondary resources like industrial waste.

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“…The amount of adsorbed Cd(II) ions per gram wheat bran at equilibrium, qe (mg/g), and the removal percentage, (% A), were calculated using the following equations: %A = C 0 −C e / C 0 × 100 (1) q e = (C 0 −C e )V/m (2) …where C 0 and C e are the initial and equilibrium concentrations of Cd(II), respectively (mg/dm examined by an FTIR spectrophotometer (Shimadzu, FTIR 8400 S with KBr disc). The retentate of biosorbent pretreatment was subjected to heterogeneous (cellulose acetate-coal) asymmetric reverse osmosis membranes (batch 317).…”

Section: Methodsmentioning

confidence: 99%

“…Several conventional methods (e.g., chemical precipitation, coagulation, sedimentation, adsorption, reduction, oxidation, solvent extraction, electrolytic extraction, evaporation, ion exchange, dialysis/electrodialysis, membrane processes, etc.) have been used to achieve effective and rapid removal of these environmental contaminants -particularly metal ions because of their toxic nature and high production cost, and limited or decreasing availability of metal deposits [1][2].…”

mentioning

confidence: 99%

Reverse Osmosis Removal of Heavy Metals from Wastewater Effluents Using Biowaste Materials Pretreatment

Thaçi¹,

Gashi²

2018

Pol. J. Environ. Stud.

100

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The rapid increase in industrial activities during the last decades has caused severe changes in the environment. This development has led to contamination of water resources with toxic contaminants such as heavy metals nutrient ions and dyes. Mining, mineral processing, and metallurgical operations (electroplating units, alloy manufacturing, etc.) generate a considerable amount of polluted water containing toxic heavy metals, which are almost persistent and non-degradable in nature, and which in turn cause adverse effects in the environment. Therefore, the treatment of these wastewaters becomes necessary before being discharged into the environment and river water streams, respectively. Several conventional methods (e.g., chemical precipitation, coagulation, sedimentation, adsorption, reduction, oxidation, solvent extraction, electrolytic extraction, evaporation, ion exchange, dialysis/electrodialysis, membrane processes, etc.) have been used to achieve effective and rapid removal of these environmental contaminants -particularly metal ions because of their toxic nature and high production cost, and limited or decreasing availability of metal deposits [1][2].However, some of these techniques have constrains on their application, such as the high operating cost, energy-intensive use hazardous chemicals, and Pol. J. Environ. Stud. Vol. 28, No. 1 (2019), 337-341 AbstractThe objective of this paper was to investigate the applicability of using biowaste materials prior to reverse osmosis treatment of water and wastewater effluents. The physico chemical properties of wheat bran, maize cob, and olive waste, and adsorption parameters such as metal concentration, adsorbent dose, contact time, and temperature of Cd(II) onto wheat bran are presented. The optimal parameters achieved in these experiment were used for sorptive removal of metal ions (Pb ) from synthetic aqueous solution as well as from wastewater effluents of the mining flotation process. At short pretreatment time, retentate of sufficient concentration was achieved with above biosorbents for further treatment. It is used as feed for reverse osmosis tests. The high removal efficiency of metal ions from synthetic as well as wastewater samples was obtained with low-pressure heterogeneous asymmetric reverse osmosis membranes almost completely by this process.

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Bio-derived materials as a green route for precious & critical metal recovery and re-use

Abstract: Overview of research in critical and precious metal recovery using biosorption, application to real-life wastes and uses of the metal-loaded materials.

Cited by 241 publications

References 196 publications

Tannin-based biosorbents for environmental applications – A review

Tannin-based biosorbents for environmental applications – A review

Biofabrication of gold nanoparticles by Shewanella species

Reverse Osmosis Removal of Heavy Metals from Wastewater Effluents Using Biowaste Materials Pretreatment

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