Ana Laura Santos

TL;DR: In this article, the authors report the kinetics and microbial dynamics of a low pH, laboratory-scale sulfidogenic bioreactor, operated as a continuous flow system for 462 days, at pH values between 4.0 and 5.0, and temperatures between 30 and 45°C.

TL;DR: It is demonstrated how a single low pH sulfidogenic bioreactor can be used to remediate a metal-rich mine water, and to facilitate the recovery (and therefore recycling) of target metals.

TL;DR: The major analytical methods described in this study for ROS were spectrophotometry, high-performance liquid chromatography (HPLC) coupled to ultraviolet (UV) detection, and tandem mass spectrometry (LC–MS/MS).

TL;DR: The results from laboratory-scale experiments in which five cobalt-bearing materials, three primary limonitic laterite ores and two processing residues (filter dust and slag), all sourced from mines and a processing plant in Greece, were bio-leached under reducing conditions by a consortium of acidophilic bacteria (using elemental sulfur as electron donor) in stirred tank bioreactors at pH 15 and 35°C.

TL;DR: In this paper, a model was proposed wherein pyrite had three critical roles in facilitating the genesis of scorodite: (i) providing the catalytic surface to promote the oxidation of As (III) to As (V); (ii) acting as a putative "seed" for the crystallisation of the mineral; and (iii) being a secondary source of iron, since the molar ratios of iron:arsenic in the concentrate itself (0.19:1) was well below that required for effective removal of soluble arsenic as scoroditic (1: