Environmental assessment and management of metal-rich wastes generated in acid mine drainage passive remediation systems

Macías, Francisco; Caraballo, Manuel A.; Nieto, José Miguel

doi:10.1016/j.jhazmat.2012.05.080

Cited by 53 publications

(17 citation statements)

References 24 publications

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“…Oxidation-reduction potential (ORP) and pH time course at three tailing concentrations, three initial pH and medium with nitrogen source (9K). Oxidation-reduction potential: ■; pH: ■ Steger (1976) reported the complete dissolution of rhodochrosite in 8 % of H 2 SO 4 (pH ≈ 0.85), whilst Macías et al (2012) observed high dissolution of Zn and Mn (77 and 86 %, respectively) in loseyite by using an oxidizing medium (8.8 mol/L H 2 O 2 and pH 2.0), compared to Zn and Mn dissolution (12 and 10 %, respectively) by aqua regia digestion (12 mol/L HCl and 15.8 mol/ HNO 3 in a 3:1 ratio).…”

Section: Resultsmentioning

confidence: 99%

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

Zazueta-Álvarez

Medrano-Roldán

Reyes-Jáquez

et al. 2018

Rev. Int. Contam. Ambie.

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The aim of this research was to evaluate bioleaching of Mn, As, Pb and Zn from mining tailings using two different sets of variable processing conditions. In the first set pH (2.0, 4.0 and 6.0), tailings concentrations (10, 20 y 30 %, w/v [111.11, 250.00 and 428.57 g/L, respectively]), and two types of culture medium (9K [with nitrogen source] and nonN (nitrogen-free medium) were evaluated; in the second set the evaluation focused on continuous supplementation of biogenic H2SO4 oxidized with two types of culture medium (9K and nonN) at different tailings concentrations (10, 20 y 30 %, w/v [111.11, 250.00 and 428.57 g/L, respectively]), with continuous supplementation of the media previously described (9K and nonN) oxidized by the native strains Leptospirillum ferriphilum and Leptospirillum ferrooxidans. In the first set, the highest removal of Mn (93.49 %), As (13.92 %) and Pb (> 99 %) was observed in both media at 10 % of tailings and initial pH of 2.0. In the second experimental set, the highest removal of Mn (99 %), As (> 85 %), Pb (> 99 %) and Zn (67 %) was found with both media at 10 % of tailings and initial pH 6.0. Continuous supplementation of biologically acidified and oxidized culture media enhanced the metals removal from solid waste or tailings. Similar metals removal in media without nitrogen compared to medium with nitrogen was observed in this research.

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Section: Resultsmentioning

confidence: 99%

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

Zazueta-Álvarez

Medrano-Roldán

Reyes-Jáquez

et al. 2018

Rev. Int. Contam. Ambie.

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“…The good hydraulic performance of the DAS reactive substrate has been widely verified by mineralogical and geochemical approaches (Caraballo et al 2011b), and a new potential economic source of metals by the exploitation of the DAS solid waste has been suggested (Pérez-López et al 2011;Macías et al 2012c). All these studies have demonstrated that the DAS system successfully treats metal-rich AMD from the IPB.…”

Section: Remediation Strategiesmentioning

confidence: 91%

A geochemical approach to the restoration plans for the Odiel River basin (SW Spain), a watershed deeply polluted by acid mine drainage

Macías

Pérez‐López

Caraballo

et al. 2016

Environ Sci Pollut Res

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The Odiel River Basin (SW Spain) drains the central part of the Iberian Pyrite Belt (IPB), a world-class example of sulfide mining district and concomitantly of acid mine drainage (AMD) pollution. The severe AMD pollution and the incipient state of remediation strategies implemented in this region, coupled with the proximity of the deadline for compliance with the European Water Framework Directive (WFD), urge to develop a restoration and water resources management strategy. Furthermore, despite the presence of some reservoirs with acid waters in the Odiel basin, the construction of the Alcolea water reservoir has already started. On the basis of the positive results obtained after more than 10 years of developing a specific passive remediation technology (dispersed alkaline substrate (DAS)) for the highly polluted AMD of this region, a restoration strategy is proposed. The implementation of 13 DAS treatment plants in selected acid discharges along the Odiel and Oraque sub-basins and other restoration measurements of two acidic creeks is proposed as essential to obtain a good water quality in the future Alcolea reservoir. This restoration strategy is also suggested as an economically and environmentally sustainable approach to the extreme metal pollution affecting the waters of the region and could be considered the starting point for the future compliance with the WFD in the Odiel River Basin.

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“…AMD generally contains highly toxic heavy metals which may have harmful effects on the environment [1]. At Sarcheshme copper mine (SCM), Iran, the AMD formed contains high copper concentrations [2].…”

Section: Introductionmentioning

confidence: 99%

Behavior and mechanism of various components of soil in Cu (II) adsorption from aqueous solution

Jalayeri

Salarirad

Ziaii

2016

Desalination and Water Treatment

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A B S T R A C TSoil plays a significant role in control of heavy metals in the environment. Therefore, understanding of the adsorption properties of soil is essential in solving pollution problems. The aim of this paper is to study Cu (II) adsorption onto two soil samples taken from around Sarcheshmeh copper mine (i.e. SA and SE). Also, the adsorption isotherms of Cu (II) onto soil samples were studied. The Langmuir isotherm indicated the best fit for the experimental data in comparison with other isotherms such as Freundlich and Temkin. The capacity of Cu (II) adsorption was assessed by distribution coefficient (K d ) for soil samples that SA sample showed high K d values. Sequential extraction was conducted for the evaluation of main sorbents of Cu (II) in soils. The results of sequential extraction were indicated and demonstrated that carbonate phase in SA and SE samples play a significant role in the adsorption of Cu (II) metal. In this study, scanning electron microscopy was used to evaluate the relationship between clay content of soil and adsorption process.

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Environmental assessment and management of metal-rich wastes generated in acid mine drainage passive remediation systems

Cited by 53 publications

References 24 publications

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

A geochemical approach to the restoration plans for the Odiel River basin (SW Spain), a watershed deeply polluted by acid mine drainage

Behavior and mechanism of various components of soil in Cu (II) adsorption from aqueous solution

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