Leachates from mine tailing ponds, which usually contain a variety of metallic ions, are highly toxic to human and ecological health. The common methods used remove those trace difficult due the extremely acidic conditions diverse kinds metals in leachates. Herein, we proposed an economical efficient soil-assisted alkali suspension approach reclaim metals. Under optimum conditions, more than 98...

This paper investigates the impact of service quality in e-tailing on site visits and consumer demand (approximated by the last-clickthrough concept). We use a large representative data set obtained from a price-comparison site which covers most of the national (Austrian) market on e-tailing. Customers’ valuations for a broad range of 15 different service characteristics are condensed by factor...

The low grade of copper deposits and the use froth flotation process have caused excessive tailing production. In recent years, experts looked for new alternative methods to improve this situation. Black minerals are abundant resources not exploited by large-scale mining possess high Mn concentrations. On other hand, manganese nodules submarine show concentrations Cu, Ni, Fe, and, mainly, Mn. H...

Abstract The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, extraction copper, zinc, lead sulfidic tailing in sulfate–chloride media was investigated. A 3 Box–Behnken design applied evaluate three variables over a 4-h testing period: sulfuric acid concentrat...

Mine tailing storage represents an important environmental issue. The generation and dispersal of dust from mine tailings can contaminate air surrounding soils. In addition, metals soluble salts present in these wastes could pollute groundwater surface water. recovery contribute to minimize the risk achieve a circular economy model. main objective work is study use two carbon-based materials, c...