Novel Biotechnological Approaches for the Recovery of Metals from Primary and Secondary Resources

Pollmann, Katrin; Kutschke, Sabine; Matys, Sabine; Kostudis, Sophias; Hopfe, Stefanie; Raff, Johannes

doi:10.3390/min6020054

Cited by 35 publications

(16 citation statements)

References 65 publications

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“…Affinity peptides have been proposed as promising ways to recover metal ions, and direct nanomaterial and film formation . EF‐hand sequences which consist of helix‐loop‐helix motifs, bind to calcium ions in nature, but are also well‐known to have affinity for lanthanide ions .…”

Section: Introductionmentioning

confidence: 99%

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Renner

2019

Peptide Science

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Cerium has a wide range of current and emerging applications, and the binding of cerium ions to solid substrates is important for cerium recovery, or in advanced material synthesis. In this study, we investigate the affinity of a surface‐bound peptide derived from the EF‐hand loop I of calmodulin for cerium (III) ions and compare the results to a scrambled control. Results obtained via quartz crystal microbalance with dissipation are used to estimate the dissociation constant between the bound EF‐hand loop I peptide and cerium (III) ions (1.3 ± 0.1 μM), which is comparable with other dissociation constants measured for EF‐hand peptides and cerium ions in solution reported this work and in literature (0.95‐5.8 μM). Circular dichroism also suggests that the peptide binds to cerium (III) ions in solution, and undergoes a secondary structural change upon binding. Overall, this study shows that EF‐hand loop peptides are capable of binding cerium (III) ions in solution and when attached to a solid substrate.

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Section: Introductionmentioning

confidence: 99%

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Renner

2019

Peptide Science

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“…In recent years, two different types of biomining processes have attracted researchers' interest as alternatives to conventional methods: bioleaching and biological oxidation, as they proved to be cost-efficient, sustainable and nonhazardous [46][47][48].…”

Section: Microbial Leachingmentioning

confidence: 99%

Hydrometallurgical Recovery of Gold from Mining Wastes

Neag¹,

Kovács²,

Dinca³

et al. 2021

Strategies of Sustainable Solid Waste Management

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Gold is a highly required material for a wide range of personal and industrial applications. The high demand for gold, together with the shortage of natural resources and high pollution potential of wastes generated during mining and ore processing activities led to search for alternative sources of gold. A possible source is represented by mine wastes resulting from the processing of polymetallic or sulfidic ores. The reprocessing of wastes and old tailings with moderate to low content of gold offers not only a business opportunity, but also enhances the quality of the surrounding environment, changes the land use and offers a wide range of socio-economic benefits. Cyanidation, the most widespread Au leaching option, is progressively abandoned due to the high risk associated with its use and to the low public acceptance. Therefore, alternative methods such as thiocyanate, thiourea, thiosulphate and halide leaching gained more and more interest. This chapter presents the most important features of some Au leaching methods, emphasizing their advantages, limitations and potential applications.

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“…These natural binding properties, originated by the evolutionary development, can be used for a wide variety of nanotechnological applications [11][12][13][14][15], e.g. for the development of water treatment systems or for the recovery of valuable metals from water [16].…”

Section: Introductionmentioning

confidence: 99%

S-layer protein-AuNP systems for the colorimetric detection of metal and metalloid ions in water

Jung

Lakatos

Bengs

et al. 2019

Colloids and Surfaces B: Biointerfaces

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Bacterial surface layer proteins (S-layer) possess unique binding properties for metal ions. By combining the binding capability of S-layer proteins with the optical properties of gold nanoparticles (AuNP), namely plasmonic resonance, a colorimetric detection system for metal and metalloid ions in water was developed. Eight Slayer proteins from different bacteria species were used for the functionalization of AuNP. The thus developed biohybrid systems, AuNP functionalized with S-layer proteins, were tested with different metal salt solutions, e.g. Indium(III)-chloride, Yttrium(III)-chloride or Nickel(II)-chloride, to determine their selective and sensitive binding to ionic analytes. All tested S-layer proteins displayed unique binding affinities for the different metal ions. For each S-layer and metal ion combination markedly different reaction patterns and differences in concentration range and absorption spectra were detected by UV/vis spectroscopy. In this way, the selective detection of tested metal ions was achieved by differentiated analysis of a colorimetric screening assay of these biohybrid systems. A highly selective and sensitive detection of yttrium ions down to a concentration of 1.67 × 10 −5 mol/l was achieved with S-layer protein SslA functionalized AuNP. The presented biohybrid systems can thus be used as a sensitive and fast sensor system for metal and metalloid ions in aqueous systems.

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Novel Biotechnological Approaches for the Recovery of Metals from Primary and Secondary Resources

Cited by 35 publications

References 65 publications

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Hydrometallurgical Recovery of Gold from Mining Wastes

S-layer protein-AuNP systems for the colorimetric detection of metal and metalloid ions in water

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