brandl h microbial leaching of metals

8 Microbial Leaching of Metals Wiley VCH Home

8 Microbial Leaching of Metals HELMUT BRANDL Z252;rich, Switzerland 1 Introduction 192 2 Terminology 192 3 Historical Background 192 4 Principles of Microbial Metal Leaching 194 4.1 Leaching Mechanisms 194 4.2 Models of Leaching Mechanisms 194 4.3 Factors Influencing Bioleaching 197 4.4 Bacterial Attachment on Mineral Surfaces 200

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Development of a Laboratory Scale Leaching Plant for Metal

Chemical leaching with 5 N H 2 SO 4 resulted in significantly increased solubilization only for Zn. The LSLP developed in this study is a promising first step toward a pilot plant with a high capacity to detoxify fly ash for reuse for construction purposes and economical recovery of valuable metals.

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Open Access Journals

30. Bossard PP, Bachofen R, Brandl H. (1996) Metal leaching of fly ash from municipal waste incineration by Aspergillus niger. Environ Sci Technol 30 30663070. 31. Becker S, Bullmann M, Dietze HJ, et al. (1986) Mass spectrographic determination of selected chemical elements by microbial leaching of zircon. Fresenius Z Anal Chem 32437 42

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Extraction and recovery of precious metals from electronic

Printed circuit boards contain precious metals. They are produced in large volumes, rendering them an important component of the electronic waste. In view of the heterogeneity of the metals present, reprocessing of electronic waste is a heinous task. The present study focused on leaching of valuable

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Bioleaching

Bioleaching is the extraction of metals from their ores through the use of living organisms. This is much cleaner than the traditional heap leaching using cyanide . [1] Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper , zinc , lead , arsenic , antimony , nickel , molybdenum

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Metal Leaching of Fly Ash from Municipal Waste

Biological leaching of fly ash from municipal waste incineration by Aspergillus niger was examined in batch cultures and compared with chemical leaching. A. niger grew in the presence of up to 10% (w/v) of fly ash in the medium. In the presence of fly ash A. niger produced gluconate, whereas in its absence citrate was produced.

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microbial leaching of gold ore durbanlizards

Microbial Leaching (Bioleaching, Biomining) Environmental Microbial leaching is the process by which metals are dissolved from ore Bioleaching has

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Metals bioleaching from electronic waste by

Brandl, H, Faramarzi, MA, Stagars, MA (2003) Novel type of microbial metal mobilization cyanogenic bacteria and fungi solubilize metals as cyanide complexes. Proceedings of the International Biohydrometallurgy Symposium, IBS2003 , 1318 September , Athens, Greece, National Technical University of Athens .

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Development of a Laboratory Scale Leaching Plant for Metal

Biohydrometallurgy, an interdisciplinary field involving geomicrobiology, microbial ecology, microbial biochemistry, and hydrometallurgy (), is a novel promising technology for recovering valuable metals from industrial waste materials (e.g., bottom and fly ash, galvanic sludge, and filter dust) and for detoxifying these materials for environmentally safe deposition.

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A comparison of microbial leaching and chemical leaching

The results showed that except for Zn, the microbial leaching achieved higher removal efficiencies than the chemical leaching with As, Cu, Mn, and Fe after 300 h of incubation. It was observed that 95% Mn, 38% Cu, 67% Zn, 41% As, and 47% Fe were removed from the mine tailings by the microbial leaching

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Development of a Laboratory Scale Leaching Plant for Metal

Chemical leaching with 5 N H 2 SO 4 resulted in significantly increased solubilization only for Zn. The LSLP developed in this study is a promising first step toward a pilot plant with a high capacity to detoxify fly ash for reuse for construction purposes and economical recovery of valuable metals.

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brandl h 200;1 microbial leaching of metals

8 Microbial Leaching of Metals Wiley VCH Leaching of Metals. HELMUT BRANDL 4 Principles of Microbial Metal Leaching 194. 4.1 Leaching 5 Microbial Diversity in Bioleaching Environments 200. 6 Case Studies of .. imately 250 h suggesting a psychrotrophic na ture of the

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Recovery of critical metals using PubMed Central (PMC)

In addition to organic acids, another interesting microbial process for metal leaching is the use of cyanogenic cultures. This process for Au leaching has been demonstrated by using cyanide lixiviants microbially produced from glycine [41,42].

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Column bioleaching of metals from electronic scrap Munir

No physical/ mophilic bacteria for column bioleaching of metals from electronic mechanical separation process was used before its transportation to scrap particularly from printed circuit boards except some optimiza the laboratory.

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Computer munching microbes metal leaching from electronic

Read quot;Computer munching microbes metal leaching from electronic scrap by bacteria and fungi, Hydrometallurgyquot; on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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3.0 References CHE 433 Modern Separations, Leaching

Spring 2014 CHE 433 Modern Separations Project Regarding Leaching Prepared in Consideration with the Guidelines of Professor Nielsen

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8 Microbial Leaching of Metals Wiley VCH Home

8 Microbial Leaching of Metals HELMUT BRANDL Z252;rich, Switzerland 1 Introduction 192 2 Terminology 192 3 Historical Background 192 4 Principles of Microbial Metal Leaching 194 4.1 Leaching Mechanisms 194 4.2 Models of Leaching Mechanisms 194 4.3 Factors Influencing Bioleaching 197 4.4 Bacterial Attachment on Mineral Surfaces 200

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In bioleaching application (the releasing of metals from

Each microbial species has another fingerprint of metabolites which are excreted and other preferences in oxidizing/reducing metals, all mechanisms responsible for metal mobilization from

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Computer munching microbes metal leaching from electronic

The objective of this study is to apply a bacterial leaching process (bioleaching) for the mobilization of metals from different metal containing solid wastes such as fine grained electronic waste. Leached and recovered metals might be recycled and re used as raw materials by metal manufacturing industries.

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Removal techniques for heavy metals from fly ash

Krebs W, Brombacher C, Bosshard PP, Bachofen R, Brandl H (1997) Microbial recovery of metals from solids. FEMS Microbiol Rev 20(34), 605617 CrossRef Google Scholar 36.

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Leaching Processes Springer for Research Development

Leaching is a step in hydro and electrometallurgical processes and has been also employed for the recovery of metals from waste of electrical and electronic equipment (WEEE). The process may be preceded by a mechanical pretreatment of the waste (see Chap. 6) and followed by purification and metal recovery from the solution (see Chaps.

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Metal Containing Residues from Industry and in the

Brandl H, Stagars M, Faramarzi MA (2003) A novel type of microbial metal mobilization cyanogenic bacteria and fungi solubilize metals as cyanide complexes. In Tsezos M, Hatzikioseyian A, Remoundaki E (eds) Biohydrometallurgy a sustainable technology in evolution (First edition 2004).

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Development of a Laboratory Scale Leaching Plant for Metal

Biohydrometallurgy, an interdisciplinary field involving geomicrobiology, microbial ecology, microbial biochemistry, and hydrometallurgy (), is a novel promising technology for recovering valuable metals from industrial waste materials (e.g., bottom and fly ash, galvanic sludge, and filter dust) and for detoxifying these materials for environmentally safe deposition.

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Microbial Recovery of Gold Metal From Untreated and

The exist metals in solution were dissolved via the pretreatment, that way, contest for the cyanide ion from other metals was reduced. The bacteria were subjected to mutation to be able grow at pH 9, 9.5 and 10, where the pKa of HCN is 9.3, thereby, the cyanide ion concentration available for bioleaching was increased by alkaline pH.

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Microbial Leaching of Metals Biotechnology Special

Brandl, H. (2001) Microbial Leaching of Metals, in Biotechnology Special Processes, Volume 10, Second Edition (eds H. J. Rehm and G. Reed), Wiley VCH Verlag GmbH

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Minerals Free Full Text Chemoorganotrophic Bioleaching

In microbially assisted leaching, the living microorganisms were present during the leaching phase, and assisted with the extraction of metals. In biogenic substance leaching, the microbial broth was autoclaved (15 min at 120 176;C) at the end of the growth phase to sterilize the broth, and filtered to remove the dead biomass; this way, only the

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Microbial Leaching of Metals from Printed Circuit Boards

Electrical and electronic equipment (EEE), e.g. printed circuit boards, contain substantial amounts of metals, e.g. Cu, Pb and Sn. The objective of this work was to investigate the bioleaching of a material, originating from a technical waste processing facility, as one possible way of a complete separation of the metals from the polymer carrier.

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Microbial Leaching of Metals Biotechnology Set, Second

How to Cite. Brandl, H. (2001) Microbial Leaching of Metals, in Biotechnology Set, Second Edition (eds H. J. Rehm and G. Reed), Wiley VCH Verlag GmbH, Weinheim

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Microbial Recovery of Copper from Printed Circuit Boards

As the microbial leaching progressed, pale brown precipitate was observed to form in the solution. Based on the total amount of copper, both in solution and precipitate, the optimal addition of ferrous ion for the leaching of copper was around 7 g L1.

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Fungal Bioleaching of Metals From Mine Tailing Mineral

So, the main objective of this research was to check the feasibility of fungal bioleaching of metals from this mine tailing as an economical and environment friendly process by using different agriculture wastes as substrates.

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