Integrated bioleaching-electrometallurgy for copper recovery …
Being economical and environment-friendly, bioleaching has attracted the attention of the scientific community. Copper low abundance, its higher competition with other metals and its higher ionic strength, may hinder the …
Two-step bioleaching of copper and gold from discarded printed circuit
An effective strategy for environmentally sound biological recovery of copper and gold from discarded printed circuit boards (PCB) in a two-step bioleaching process was experimented.
Progress in bioleaching: part B, applications of microbial
Abstract This review provides an update to the last mini-review with the same title pertaining to recent developments in bioleaching and biooxidation published in 2013 (Brierley and Brierley). In the intervening almost 10 years, microbial processes for sulfide minerals have seen increased acceptance and ongoing but also declining …
Producing Copper Nature's Way: Bioleaching
Bioleachingis the extraction of a metal from sulfide ores or concentrates using materials found native to the environment; namely, water, air and microorganisms. In other words, bioleaching is the commercialization of the ability of certain bacteria and archaea, found in nature, to …
Bioleaching
Bioleaching is a biohydrometallurgical technology, in which microorganisms are utilized to aid in the extraction of REE from sulphide- and pyrite-rich ores (Fathollahzadeh et al., 2019). As an example, bioleaching to extract copper has been employed since 1958, and today 20% of the world's copper is mined through bioleaching.
Understanding the mechanism of microcrack-enhanced bioleaching of copper
Investigations on the microcrack distribution characteristics and bioleaching behaviors of particles were conducted to obtain better bioleaching efficiency and deepen the mechanism understanding.
Mission 2015: Bioleaching
The inputs to the process of bioleaching mainly depend on the type of microorganism used and should be extremely favorable for the dissolution of the metal. Inputs to the process include the following: ... Rehman, Mujeeb-ur. "Bioleaching of copper from Saindak ores in columns." Journal of Biological Sciences 2(1) (1999): 158-159. Print.
16.6A: Microbial Ore Leaching
Key Terms. ore leaching: The process of recovering metals from ores by using a number of different techniques.; Microbial ore leaching (bioleaching) is the process of extracting metals from ores with the use …
Bioleaching of Iron, Copper, Lead, and Zinc from the Sludge …
In the bioleaching process, bacterial cells have been established as being able to convert metals from solid to liquid phase. However, the most important parameters of bioleaching are particle size, pH, and pulp density, thus our …
Progress in bioleaching: part B, applications of microbial
Learn about the latest advances in bioleaching and biooxidation, the microbial processes that can enhance the recovery of metals from ores and wastes.
Bioleaching
Along these lines, Zeng et al. [65], developed a process of copper-catalyzed bioleaching to recycle cobalt in spent lithium-ion batteries (mainly LiCoO 2). The authors studied the influence of copper ions on the bioleaching of LiCoO …
Bioleaching of Copper-Containing Electroplating Sludge
The recovery of precious metals from solid waste through bioleaching has become a research hotspot in recent years. Thus, in this study, different strategies, such as chemical sulfuric acid leaching and mixed consortium bioleaching, were adopted to extract copper from Copper-Containing Electroplating Sludge.
Bioleaching of Copper
Natural bioleaching has been taking place for almost as long as the history of the world, but it is only in the last few decades that we have realized that bioleaching is responsible for …
Bio Hydrometallurgical Technology, Application and Process Enhancement
It was dump bioleaching process taken as the first commercial bioleaching in 1950 used to leach copper from sulfide minerals, since then bioleaching bloomed by copper oxide heap leaching, industrial microbial leaching process applied for sulfidic gold and bioheap commercial leaching of copper ore (chalcocite and covellite).
(PDF) Copper heap leaching: Process, principles and practical
Number and distribution of the commercial heap bioleaching plants and examples for the main industrial applications are shown in Figure 3 and Table 1, …
Bioleaching of copper from waste printed circuit boards by …
Background The toxicity of waste printed circuit boards (PCBs) to bacteria was considered as the major limitation in bioleaching of copper from PCBs. To reduce the toxicity of PCBs, copper extraction from PCBs was investigated using bacteria-free cultural supernatant from some metallurgical microbial consortium, whose predominant …
Microbial leaching for valuable metals harvesting: versatility …
The present article intends to highlight the valuable metals which are being recovered by the process of microbial leaching from various kind of solid waste, the mechanism by which metals are mobilized, commercially used bioleaching processes along with their benefits and shortcomings, conditions and factors necessary for the …
Biofilm Formation Is Crucial for Efficient Copper Bioleaching …
Biofilm formation within the process of bioleaching of copper sulfides is a relevant aspect of iron- and sulfur-oxidizing acidophilic microorganisms as it re...
Bioleaching: Introduction, Methods, Application, Copper, …
Bioleaching: Introduction, Methods, Application, Copper, Microorganisms, and Processes! Introduction to Bioleaching: Leaching process was first observed in pumps and …
Bioleaching kinetics of copper from copper smelters dust
The apparent lack of a universal mechanism to explain the bioleaching of different copper sulfide minerals in the copper dust warrants fundamental studies of biological and electrochemical mechanisms to understand optimized conditions and to develop models for bioleaching process. The bioleaching data from copper smelters …
Progress in bioleaching: fundamentals and mechanisms of …
The mobilization of metal cations from often almost insoluble minerals in ores by biological acidification, oxidation, and complexation processes is referred to as …
Synthetic biology approaches to copper remediation: bioleaching …
A review of current technologies in bacterial bioremediation, biorecycling and bioleaching, of copper homeostasis strategies used by bacteria, and how thes
Synthetic biology approaches to copper remediation: …
A review of current technologies in bacterial bioremediation, biorecycling and bioleaching, of copper homeostasis strategies used by bacteria, and how thes
(PDF) Copper heap leaching: Process, principles and …
Heap bioleaching is a microbial technology that catalyzes the decomposition of ore without grinding. The crushed ore is stacked on the liner, and the microbial solution flows through the heap from ...
Bioleaching Modeling—A Review
2. Bioleaching Process. Bioleaching—as opposed to traditional (heap) leaching—has become an attractive alternative in recent decades due to its potential in mineral leaching on a laboratory scale and, mainly, due to its industrial applications . The industrial operation applied to the leaching of copper sulfides considers the formation of …
Re-inoculated Bacteria Driving Microbial Community
Low-grade ores generated by mining activities can lead to resource waste and environment pollution, which is of great concern. Thus, low-grade copper sulfide ores bioleaching is investigated in this study by re-inoculating bacteria at different intervals. The highest bacteria concentration of 5.830 × 107 cells·mL−1, improved attached bacteria …
Biological methods of metal extraction
For example, high-grade copper ores, which contain a high percentage of copper, are becoming harder to find and mine. ... The solution is called a leachate and the process is called bioleaching ...
Bioleaching of copper from chalcopyrite ore at higher NaCl
Controlling jarosite makes the process attractive from technical and economical viewpoints. • Two main strategies were studied: ORP control and chloride addition in irrigation. • A hybrid lixiviant (Sulfate-chloride) resulted in more than 80% copper recovery by ore bioleaching.
Bioleaching of Metals from E-Waste Using Microorganisms: …
The bioleaching process is carried out at optimum bioprocess conditions suitable for the growth of the organisms, secretion of biolixiviants, and biorecovery of metals from waste materials. ... Luo, X.; Zou, J. A copper-catalyzed bioleaching process for enhancement of cobalt dissolution from spent lithium-ion batteries. J. Hazard. Mater. …
Elemental Copper Recovery from e-Wastes Mediated with a …
The aim of the present work was to optimize the copper bioleaching from e-waste through a two-step process in order to shorten process execution times.