One step bioconversion of waste precious metals into Serratia biofilm-immobilized catalyst for Cr(VI) reduction

Yong, Ping; Liu, W.; Zhang, Zhibing; Beauregard, Daniel A.; Johns, Michael L.; Macaskie, Lynne E.

doi:10.1007/s10529-015-1894-1

Cited by 18 publications

(19 citation statements)

References 31 publications

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“…Using Serratia sp. biofilms, developed on the polyurethane foam, palladium was recovered as biofilm-Pd 0 nanocatalyst from industrial wastes [65]. The biorecovery of Pd(II) occurs in three concomitant steps: (i) biosorption with biomass via interactions with surface functional groups viz.…”

Section: Au + 8cn + O + 2h O → 4au Cn + 4ohmentioning

confidence: 99%

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Ilyas

Kim

Lee

et al. 2017

Metals

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Abstract:Metals with an average crustal abundance of <0.01 ppm, which are high in supply shortage due to soaring demand, can, under the excessive environmental risk and <1% recycling rate of their production, be termed as 'critical' in a limited geo-boundary. A global trend to the green energy and low carbon technologies with geopolitical scenario is challenging for the sustainable reclamation of these metals from secondary resources. Among the available processes, bio-reclamation can be a sustainable technique for extracting and concentrating these metals. Therefore, in the present paper, the potential reclamation of critical metals (including rare earth elements, precious metals, and a common nuclear fuel element, uranium) via their interaction with microbe/s has been reviewed.

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Section: Au + 8cn + O + 2h O → 4au Cn + 4ohmentioning

confidence: 99%

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Ilyas

Kim

Lee

et al. 2017

Metals

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“…Macaskie, unpublished work), but the same study showed that catalyst stability was retained completely by bio-Pd of E. coli, and also by the related Serratia sp. by self immobilisation of the bacteria as a biofilm onto a support [81]. The adhesive and cohesive strength were quantified via a micromanipulation method [81] and examination of a flow-through column system by MRI showed no evidence of catalyst loss under load [20].…”

Section: Comparison Of Bio-pd Ecoli With Bio-pd Ddesulfuricansmentioning

confidence: 99%

Selective hydrogenation using palladium bioinorganic catalyst

Zhu

Wood

Deplanche

et al. 2016

Applied Catalysis B: Environmental

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a b s t r a c tPalladium bioinorganic catalyst (bio-Pd) was manufactured using bacteria (Desulfovibrio desulfuricans and Escherichia coli) via the reduction of Pd(II) to bio-scaffolded Pd(0) nanoparticles (NPs). The formed Pd NPs were examined using electron microscopy and X-ray powder diffraction methods: a loading of 5 wt% Pd showed an average particle size of ∼4 nm. The catalytic activities of the prepared bio-Pd NPs on both bacteria were compared in two hydrogenation reactions with that of a conventionally supported Pd catalyst (Pd/Al 2 O 3 ). Concentration profiles of the different hydrogenation products were fitted using a Langmuir-Hinshelwood expression. In 2-pentyne hydrogenation, 5 wt% Pd E.coli achieved 100% of 2-pentyne conversion in 20 mins and produced 10.1 ± 0.7 × 10 −2 mol L −1 of desired cis-2-pentene; in contrast 5 wt% Pd/Al 2 O 3 yielded 6.5 ± 0.4 × 10 −2 mol L −1 of cis-2-pentene after 40 mins. In the solvent-free hydrogenation of soybean oil, the use of 5 wt% Pd E.coli yielded cis-C18:1 of 1.03 ± 0.04 mol L −1 and trans-C18:1 of 0.26 ± 0.03 mol L −1 (∼50% less of the latter than 5 wt% Pd/Al 2 O 3 ) after 5 h. Similar results were obtained using bio-Pd E.coli and bio-Pd D.desulfuricans . Bio-Pd was concluded to have the advantage of a lower cis-trans isomerisation in hydrogenation of alkyne/alkenes. Hence biomanufacturing is an environmentally attractive, scalable and facile alternative to conventional heterogeneous catalyst for application in industrial hydrogenation processes. D. desulfuricans is inconvenient to grow at scale but wastes of E. coli are produced from various industrial processes. 'Second life' (i.e. recycled from a pilot scale biohydrogen production process) E. coli cells were used to make bio-Pd catalysts. Although 'bio-Pd secondlife gave a slower conversion rate of 2-pentyne and soybean oil compared to bio-Pd from purpose-grown cells it showed a higher selectivity to the cis-isomer product.

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“…These include commercially relevant synthetic chemistry, (Deplanche et al ., ), sometimes with better product selectivity in comparison with established catalysts (Zhu, ). Bacterially supported catalyst is recoverable in repeated reaction cycles without attrition or loss (Bennett et al ., ), and hence, this approach is beneficial in terms of catalyst conservation and reduced wastage, especially where the catalyst is self‐immobilized onto a tightly adhering biofilm for application in a continuous process (Yong et al ., ).…”

Section: Introductionmentioning

confidence: 97%

“…This approach pioneers a new area of environmental nanotechnology where the potential hazards of nanoparticle migration (Lead and Valsami‐Jones, ; Valsami‐Jones and Lynch, ) are forestalled by the retention of the catalytic NPs onto the micron‐sized, robust ‘carrier’ bacterial cells and macroscopic biofilm, where the catalyst ensemble remains tightly bound (Yong et al ., ).…”

Section: Introductionmentioning

confidence: 97%

Biorefining of platinum group metals from model waste solutions into catalytically active bimetallic nanoparticles

Murray

Zhu

Wood

et al. 2017

Microbial Biotechnology

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SummaryBacteria can fabricate platinum group metal (PGM) catalysts cheaply, a key consideration of industrial processes and waste decontaminations. Biorecovery of PGMs from wastes is promising but PGM leachates made from metallic scraps are acidic. A two‐step biosynthesis ‘pre‐seeds’ metallic deposits onto bacterial cells benignly; chemical reduction of subsequent metal from acidic solution via the seeds makes bioscaffolded nanoparticles (NPs). Cells of Escherichia coli were seeded using Pd(II) or Pt(IV) and exposed to a mixed Pd(II)/Pt(IV) model solution under H2 to make bimetallic catalyst. Its catalytic activity was assessed in the reduction of Cr(VI), with 2 wt% or 5 wt% preloading of Pd giving the best catalytic activity, while 1 wt% seeds gave a poorer catalyst. Use of Pt seeds gave less effective catalyst in the final bimetallic catalyst, attributed to fewer and larger initial seeds as shown by electron microscopy, which also showed a different pattern of Pd and Pt deposition. Bimetallic catalyst (using cells preloaded with 2 wt% Pd) was used in the hydrogenation of soybean oil which was enhanced by ~fourfold using the bimetallic catalyst made from a model waste solution as compared to 2 wt% Pd preloaded cells alone, with a similar selectivity to cis C18:1 product as found using a Pd‐Al2O3 commercial catalyst.

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One step bioconversion of waste precious metals into Serratia biofilm-immobilized catalyst for Cr(VI) reduction

Abstract: A 'one pot' conversion of precious metal waste into new catalyst for waste decontamination was shown in a continuous flow system based on the use of Serratia biofilm to manufacture and support catalytic Pd-nanoparticles.

Cited by 18 publications

References 31 publications

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Bio-Reclamation of Strategic and Energy Critical Metals from Secondary Resources

Selective hydrogenation using palladium bioinorganic catalyst

Biorefining of platinum group metals from model waste solutions into catalytically active bimetallic nanoparticles

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