Effectiveness of alkaline amendments in acid mine drainage remediation

Kastyuchik, Alexey; Karam, Antoine; Aïder, Mohammed

doi:10.1016/j.eti.2016.06.001

Cited by 36 publications

(12 citation statements)

References 32 publications

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“…There are two major factors contributed to the changes; alkalinity generation by sulphate reduction bacteria (SRB) activity in organic substrate and dissolution of limestone (CaCO 3 ). According to Kastyuchik et al 2016, Ca is the most important acid neutralizing element. Meanwhile, Fe removal mechanism could be via adsorption on to the surface of organic substrate, precipitate as iron sulphide (FeS) and precipitate as iron hydroxide (Fe(OH) 3 ).…”

Section: Temporal Changes Of Ph Level and Fe Concentrationmentioning

confidence: 99%

Iron removal and pH stabilization of synthetic acid mine drainage (AMD) using peat soil and limestone.

Halim

Ibrahim

Izhar

et al. 2021

Preprint

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A Successive Alkalinity Producing System (SAPS) was evaluated for the remediation of synthetic Acid Mine Drainage (AMD) by using an organic substrate of peat soil and limestone aggregate. The characterization of the AMD was conducted by the testing the AMD effluent originated from active mining site at Pengkalan Hulu, Perak, Malaysia. The characterization of the peat soil and limestone revealed stipulated composition, carbon content in the peat soil and particle size distribution of the limestone. Synthetic AMD was prepared incorporating iron sulphate (FeSO4) and sulphuric acid (H2SO4). The synthetic AMD was acidic (pH < 4.0) and with 50, 75 and 100 ppm Iron (Fe) concentration. A laboratory scale physical model to simulate a tailing pond was developed. The synthetic AMD was introduced and passed through the filtration media. Subsequently, water samples were collected and analyzed to determine pH level. Additionally, the Fe concentration was analyzed using UV-Vis test at 6 to maximum 48 hours’ retention time. The residues of the peat soil and limestone from the physical model were further analyzed using SEM-EDX microscopic to determine the remaining iron content absorb or precipitate onto the peat soil and limestone. The analysis revealed that the innovative methodology has successfully reduced more than 85 % iron content and neutralized the pH only after 6 hours of retention time. These results proved the combination of peat soil and limestone potentially can be proposed as the alternate solution for treating the AMD effluent from the mining site.

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Section: Temporal Changes Of Ph Level and Fe Concentrationmentioning

confidence: 99%

Iron removal and pH stabilization of synthetic acid mine drainage (AMD) using peat soil and limestone.

Halim

Ibrahim

Izhar

et al. 2021

Preprint

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“…Irrigated agricultural produce often experiences a variety of negative effects caused by changes in the supply and quantity of irrigation water, including reduced yields, deteriorated quality, and soil quality degradation [8]. Researchers [1,[9][10][11] have recommended different methods of ameliorating acid mine drainage so that it can be utilized as irrigation water for crop production, and these include the use of lime, phosphorous rock, artificial wetlands, and the reverse osmosis process. The cost of the methods used in decontaminating AMD water varies, as some, such as fly ash (FA), are less expensive and can boost the irrigation water supply compared to liming, which is expensive [5].…”

Section: Introductionmentioning

confidence: 99%

1H-NMR and LC-MS Based Metabolomics Analysis of Potato (Solanum tuberosum L.) Cultivars Irrigated with Fly Ash Treated Acid Mine Drainage

Raletsena¹,

Mdlalose²,

Bodede³

et al. 2022

Molecules

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1H NMR and LC-MS, commonly used metabolomics analytical platforms, were used to annotate the metabolites found in potato (Solanum tuberosum L.) irrigated with four different treatments based on FA to AMD ratios, namely: control (0% AMD; tap water), 1:1 (50% AMD), 3:1 (75% AMD is 75% FA: AMD), and 100% AMD (untreated). The effects of stress on plants were illustrated by the primary metabolite shifts in the region from δH 0.0 to δH 4.0 and secondary metabolites peaks were prominent in the region ranging from δH 4.5 to δH 8.0. The 1:3 irrigation treatment enabled, in two potato cultivars, the production of significantly high concentrations of secondary metabolites due to the 75% FA: AMD content in the irrigation mixture, which induced stress. The findings suggested that 1:1 irrigation treatment induced production of lower amounts of secondary metabolites in all crops compared to crops irrigated with untreated acid mine drainage treatment and with other FA-treated AMD solutions.

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“…However, the case at the abandoned Leadhills and Wanlockhead mines is more complex where the pH of drainage water is buffered at circum-neutral pH values due to the presence of carbonate minerals in the host rock (SEPA 2011b). Little is known about the controls on release into the hydrological cycle of lead and other potentially toxic elements (PTEs) from either primary or secondary minerals in deposits (Anawar 2013(Anawar ,2015Kastyuchik et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluating controls on potentially toxic element release in circum-neutral mine water: a case study from the abandoned Pb–Zn mines of Leadhills and Wanlockhead, South of Scotland, United Kingdom

Chukwura

Hursthouse

2020

Environ Earth Sci

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Historic sulphidic Pb-Zn mining catchments at Leadhills and Wanlockhead, in the south of Scotland, UK have a legacy of mining of PbS (galena) and ZnS (sphalerite) from the twelfth century to the 1930s. The mining activities created tailing piles, ponds, adits and contaminated soils that contribute leaching and surface runoff of potentially toxic elements, particularly lead (Pb), which impact on the surface water and groundwater and are rapidly diluted in the wider catchment area. Studies by environmental regulators have shown that Pb, Cd and Zn in water can locally exceed the Environmental Quality Standards (EQS), particularly at Leadhills. To evaluate geochemical controls on release, 20 water sources (adits, surface water and near-surface groundwater) were sampled over four seasons (spring, summer, autumn and winter) over a 1-year period and characterized. Samples were circum-neutral pH from 6.3 to 7.9 (with average total dissolved solids < 55.0 mg/L), with no characteristics of acid mine drainage. The concentrations of PTEs in the water exceed UK EQS and WHO standards (and non-compliance on the Water Framework Directives). Geochemical modelling (GWB and PHREEQC v2) predicted mineral control on solubility which identified PbSO 4 (anglesite), Fe 2 O 3 ferric oxide (haematite), Fe 3 O 4 (magnetite), FeCO 3 (siderite), CaMg(CO 3) 2 (dolomite), CaCO 3 (calcite) and Ca(Fe•Mg)(CO 3) 2 (ankerite) to be important. These were confirmed in solid phases analysed from tailings and sediments in contact with the hydrological cycle at the sites. Multivariate statistical analysis (PCA) of water samples associated with leaching through mine tailings showed strong seasonal variation with some elements (Fe, Cu, Cd, Pb, Na, Ca and Zn) with higher variance. The strong negative association of pH with soluble Zn, Cu, As, Cd and Pb highlights typical sulfide oxidation processes are taking place and supported by a positive correlation with temperature. Dissolution processes of mineral phases indicated by positive association of TDS and EC with Na, Ca and Zn. The data from PCA suggest contributions with potential for active generation of acid mine drainage and dissolution of solid phases influencing the release of PTEs into surface waters.

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Effectiveness of alkaline amendments in acid mine drainage remediation

Cited by 36 publications

References 32 publications

Iron removal and pH stabilization of synthetic acid mine drainage (AMD) using peat soil and limestone.

Iron removal and pH stabilization of synthetic acid mine drainage (AMD) using peat soil and limestone.

1H-NMR and LC-MS Based Metabolomics Analysis of Potato (Solanum tuberosum L.) Cultivars Irrigated with Fly Ash Treated Acid Mine Drainage

Evaluating controls on potentially toxic element release in circum-neutral mine water: a case study from the abandoned Pb–Zn mines of Leadhills and Wanlockhead, South of Scotland, United Kingdom

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