Simultaneous recovery of valuable metal ions and tailings toxicity reduction using a mixed culture bioleaching process

Economic Feasibility Evaluation of Bioleaching-Based Tungsten Recycling of Semiconductor Industry Waste

“…The economic viability of these processes was determined by deducing the parameters necessary for the economic analysis of each case and categorizing them into economic and technical parameters. , This section discusses the methodologies for collecting and processing these values for subsequent analysis. In bioleaching, microbial strains are cultivated in bioreactors and adapted to metal-rich environments. , Rare metals are extracted from pretreated wastewater as ions or ion complexes, leveraging the metabolic byproducts of these strains. A critical technical parameter in bioleaching is PD, which refers to the mass/volume ratio of the reaction material in wastewater.…”

“…In bioleaching, microbial strains are cultivated in bioreactors and adapted to metalrich environments. 45,46 Rare metals are extracted from pretreated wastewater as ions or ion complexes, leveraging the metabolic byproducts of these strains. A critical technical parameter in bioleaching is PD, which refers to the mass/volume ratio of the reaction material in wastewater.…”

Application Prospect of Anaerobic Reduction Pathways in Acidithiobacillus ferrooxidans for Mine Tailings Disposal: A Review

“…Electrochemical repair techniques are expensive and require complex operations [49]. However, bioleaching is considered as a convincing technology for the recovery of valuable metal elements from mine tailings due to the low cost and simple infrastructure, with broad development prospects [50,51]. Moreover, under anaerobic conditions, At.…”

Solvent Extraction Process for Refining Cobalt and Nickel from a “Bulk Hydroxide Precipitate” Obtained by Bioleaching of Sulfidic Mine Tailings

“…13 These intermediates are further processed to recover valuable metals. 14,15 Distinct downstream purification may be applied, including selective oxidation and precipitation, which may be combined with solvent extraction (SX). 13,16−23 The more practical solutions adopted by the mining industry might rely on chemical precipitations, e.g., sulfide precipitations, achieving metal sulfides and mixed metal sulfide (e.g., Ni/CoS) products.…”

“…Because of the low concentrations of metals in the bioleaching stage, downstream processing might include a precipitation step to concentrate the leached metals in solid intermediates, often in the form of a mixed hydroxide precipitate MHP or a mixed sulfide precipitate MSP . These intermediates are further processed to recover valuable metals. , Distinct downstream purification may be applied, including selective oxidation and precipitation, which may be combined with solvent extraction (SX). ,− The more practical solutions adopted by the mining industry might rely on chemical precipitations, e.g., sulfide precipitations, achieving metal sulfides and mixed metal sulfide (e.g., Ni/CoS) products . However, SX-based flowsheets provide the advantage of selectively separating metals from complex aqueous solutions, achieving a high degree of separation, which may reflect in high-purity products, craved by the modern industry, e.g., battery materials. , …”