Bio-recycling of metals: Recycling of technical products using biological applications

Pollmann, Katrin; Kutschke, Sabine; Matys, Sabine; Raff, Johannes; Hlawacek, Gregor; Lederer, Franziska L.

doi:10.1016/j.biotechadv.2018.03.006

Cited by 123 publications

(71 citation statements)

References 229 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bioleaching is a cutting-edge technology for metal extraction being studied by numerous research groups dealing with biohydrometallurgy [11,13,15,69]. It is known that the chemical process is generally unsurpassed for its shorter duration as compared to a biological process; however, the latter has a "green" connotation, which is seen as highly desirable given current trends in waste management [10].…”

Section: Bioleaching Efficiencymentioning

confidence: 99%

“…As a result of slag treatment, the generation of metal-free or metal-depleted residue is strongly desired [10]. Therefore, the development of suitable extraction protocols is a hotly contested subject of waste management debates [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…In this vein, sulfuric acid (H 2 SO 4 ) leaching is well known for its good metal extraction efficiency [20]; however, this traditional chemical reagent can also be replaced by a biologically produced one [11,13,14]. Likewise, organic acids produced in the presence of microbial consortia can contribute to the extraction process as well [15,26,27]. Therefore, the use of these acids is reasonable for a simplified model of the biotic process and for shaping its optimal conditions.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

Potysz

Kierczak

2019

Minerals

View full text Add to dashboard Cite

The aim of this study was to evaluate the feasibility of (bio)hydrometallurgical methods for metal extraction from historical copper slags. Two types of slags (amorphous slag—AS, and crystalline slag—CS) were subjected to 24 to 48 h of leaching with: (i) Sulfuric acid at 0.1, 0.5, and 1 M concentrations at 1%, 5%, and 10% pulp densities (PDs); and (ii) normality equivalent (2 N) acids (sulfuric, hydrochloric, nitric, citric, and oxalic) at pulp densities ranging from 1% to 2%. Bioleaching experiments were performed within 21 days with Acidithiobacillus thiooxidans accompanied by an abiotic control (sterile growth medium). The results demonstrated that the most efficient treatment for amorphous and crystalline slag was bioleaching at 1% PD over 21 days, which led to extraction of Cu at rates of 98.7% and 52.1% for AS and CS, respectively. Among the chemical agents, hydrochloric acid was the most efficient and enabled 30.5% of Cu to be extracted from CS (1% PD, 48 h) and 98.8% of Cu to be extracted from AS (1% PD, 24 h). Slag residues after leaching were characterized by strong alteration features demonstrated by the complete dissolution of fayalite in the case of CS and the transformation of AS to amorphous silica and secondary gypsum. Based on this study, we conclude that amorphous slag is a more suitable candidate for potential metal recovery because of its generally high susceptibility to leaching and due to the generation of residue significantly depleted in metals as the end product. The inventory of economically relevant metals showed that 1 ton of historical copper slag contains metals valued at $47 and $135 for crystalline and amorphous slag, respectively, suggesting that secondary processing of such materials can potentially be both economically and environmentally viable.

show abstract

Section: Bioleaching Efficiencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

Potysz

Kierczak

2019

Minerals

View full text Add to dashboard Cite

show abstract

“…Considerable research efforts have been directed toward the development of efficient biological methods for recovering small amounts of these materials from wastewater systems [48,49]. Research has recently focused on environmentally friendly technologies of metal recovery, including REEs, from secondary resources [56,57] including bio-sorption by algae or cyanobacteria [52,58]; for review, see [59,60].…”

Section: Rare Earth Elementsmentioning

confidence: 99%

The Red MicroalgaGaldieriaas a Promising Organism for Applications in Biotechnology

Čížková¹,

Vítová²,

Zachleder³

2020

Microalgae - From Physiology to Application

View full text Add to dashboard Cite

The genus Galdieria refers to red algae and includes microscopic inhabitants of highly acidic (pH 1-2), often volcanic habitats. They are thermophilic or thermo-tolerant organisms, some of them surviving temperatures up to 56°C. As other extremophilic microorganisms, they exhibit unique features derived from their modified metabolisms. In this chapter, we will review the special abilities of Galdieria species such as metabolic flexibility to grow photoautotrophically, heterotrophically or mixotrophically, ability to utilize a whole range of unusual carbon sources, capability of surviving extreme environments or their extremely high resistance to metals. We will discuss the potential of Galdieria for applications in biotechnology, for example, phycocyanin production, nutrient removal from urban wastewaters, bio-mining, treatment of acidic mine drainage, selective metal precipitation, bioremediation of acidic metal-contaminated areas or recovery of critical and scarce metals from secondary sources.

show abstract

“…Flue dust residues are promising candidates as they contain metals as easily accessible oxides and can contain strategically important metals at concentrations that can exceed those in primary resources . An innovative hydrometallurgical technique for indium extraction from sulfidic ores such as sphalerite (ZnS) is microbial leaching , where indium concentrations are typically between 100 and 200 mg/kg . Oxidation of metal sulfides occurs, e.g.…”

Section: Introductionmentioning

confidence: 99%

Quantifying indium with ion chromatography in hydro‐ and biohydrometallurgical leaching solutions

Ashworth

Weller

Frisch

2019

J of Separation Science

View full text Add to dashboard Cite

A methodology has been developed to chromatographically quantify indium in polymetallic (bio)hydrometallurgical processing solutions using the Dionex IonPac CS5A column and pyridine-2,6-dicarboxylic acid eluent. Cu(II) and In(III) could be separated by elevating the column temperature to 45 • C. The comparatively low stability constant of the In-eluent complex (log K 2 = 3.8) required typical leaching samples to be diluted in the eluent rather than acid or water to overcome ligand competition between components of the sample solution and the eluent. The methodology was applied to leachates from (bio)hydrometallurgical processing of oxidic flue dust residues and sulfidic zinc ores, where both are promising candidates for the recovery of indium from low grade ores and metallurgical wastes. Indium, ferrous iron, ferric iron, copper, zinc, nickel, and manganese concentrations could be simultaneously quantified. The method was found suitable for samples containing at least 0.25 mg/L indium and an iron to indium ratio of up to 100:1. K E Y W O R D Scomplex stability, hydrometallurgy, indium, ion exchange chromatography, leaching

show abstract

Bio-recycling of metals: Recycling of technical products using biological applications

Cited by 123 publications

References 229 publications

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

Prospective (Bio)leaching of Historical Copper Slags as an Alternative to Their Disposal

The Red MicroalgaGaldieriaas a Promising Organism for Applications in Biotechnology

Quantifying indium with ion chromatography in hydro‐ and biohydrometallurgical leaching solutions

Contact Info

Product

Resources

About