Role of iron colloids in copper speciation during neutralization in a coastal acid mine drainage, South Korea: Insight from voltammetric analyses and surface complexation modeling

Jung, Hwanyup; Yun, Seong Taek; Kwon, Jang Soon; Zheng, Yan

doi:10.1016/j.gexplo.2011.09.002

Cited by 10 publications

(2 citation statements)

References 51 publications

(67 reference statements)

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“…At present, the application of some eco-sustainable full-scale passive treatment systems based on alkaline addition has shown to be highly effective in reducing the pollutant load and acidity in abandoned AMD discharges at the IPB (Martínez et al, 2019;Orden et al, 2021). This research focuses on geochemical processes occurring in the Estuary of Huelva; however, it can be extended to other mining districts around the world where AMD streams mix directly with seawater such as King River (Tasmania, Australia; Augustinus et al, 2010), Chonam-ri Creek (Kwangyang, South Korea;Jung et al, 2012), Afon Goch (Anglesey, North Wales; Dean et al, 2013) and Gromolo Torrent (Liguria, North-West Italy; Consani et al, 2017).…”

Section: Study Sitementioning

confidence: 99%

Effects of estuarine water mixing on the mobility of trace elements in acid mine drainage leachates

Pérez‐López¹,

Millán-Becerro²,

Basallote³

et al. 2023

Marine Pollution Bulletin

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Section: Study Sitementioning

confidence: 99%

Effects of estuarine water mixing on the mobility of trace elements in acid mine drainage leachates

Pérez‐López¹,

Millán-Becerro²,

Basallote³

et al. 2023

Marine Pollution Bulletin

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“…This geochemical modelling software allows the assessment of the transport and precipitation of heavy metals as well as adsorption equilibriums (Shi et al, 2013;Wagner and Kaupenjohann, 2014;Yu et al, 2014). It is also used for leaching predictions and for calculating the composition of the leachates in equilibrium with potential solubility-controlling minerals (Houben et al, 2012;Jung et al, 2012;Comans, 1997, 1999;Sjöstedt et al, 2013). Thus the mineral phases controlling the leaching in the pH range of interest for each by-product were identified by comparing theoretical modelling with experimental data.…”

Section: Reuse Of Mgo By-products As Stabilizing Agentsmentioning

confidence: 99%

Low-grade magnesium oxide by-products for environmental solutions: Characterization and geochemical performance

Valle-Zermeño

Giró-Paloma

Formosa

et al. 2015

Journal of Geochemical Exploration

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The reutilization of the by-products from the calcination of natural magnesite for environmental solutions is conditioned by the availability of MgO, CaO and other compounds. In order to overcome their great heterogeneity, an exhaustive chemical and physical characterization is necessary in order to assess their potential applications. In this study, the acid neutralization capacity (ANC) test was used to categorize three types of byproducts (LG-MgO, LG-D and LG-F), which mainly differed according to source ore and processing conditions. The experimental data concerning the leaching of Mg 2+ , Ca 2+ , Fe 2+ and SO 4 2− was corroborated with geochemical predictions using the modelling software Visual MINTEQ. Likewise, the main solubility-controlling mineral phases were also identified. According to the results, there is a buffer capacity within the pH 8-10 range, mainly dominated by the neutralization of MgO/Mg(OH) 2 , equilibrium with a small contribution from the carbonate content at lower pH values. The release of sulphates showed a non-pH dependency attributed to the solubility of CaSO 4 and elemental sulphur present in petcoke. For dust materials, leaching of Fe was minimal above pH 6 owing to the insoluble nature of the Fe 2 O 3 /Fe 3 O 4 pair. Accordingly, the by-products labeled as LG-D and LG-F are better suited for stabilizing solid wastes or wastewater that are acid while LG-MgO is more appropriate for alkaline residues such as contaminated soils. In both cases, a suitable pH range in which pH-dependent heavy metals and metalloids show minimum solubility can be obtained. The use of these by-products guarantees an environmentally friendly alkali reservoir for the long-term stabilization of heavy metals and metalloids at a very competitive price as a substitute for the widely used lime.

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Geochemical interactions in the trace element–soil–clay system of treated contaminated soils by Fe-rich clays

Kypritidou¹,

Argyraki²

2020

Environ Geochem Health

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Role of iron colloids in copper speciation during neutralization in a coastal acid mine drainage, South Korea: Insight from voltammetric analyses and surface complexation modeling

Cited by 10 publications

References 51 publications

Effects of estuarine water mixing on the mobility of trace elements in acid mine drainage leachates

Effects of estuarine water mixing on the mobility of trace elements in acid mine drainage leachates

Low-grade magnesium oxide by-products for environmental solutions: Characterization and geochemical performance

Geochemical interactions in the trace element–soil–clay system of treated contaminated soils by Fe-rich clays

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