Mineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA

Bayless, E. Randall; Schulz, Marjorie S.

doi:10.1007/s00254-003-0875-1

Cited by 34 publications

(32 citation statements)

References 33 publications

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“…Al, Fe, Ni, Sr and V), a pattern identified at other slag disposal sites (e.g. Bayless and Schulz 2003) and sites with similar leachates from fly ash weathering (Donahoe 2004). Low accumulation rates of these trace metals relative to the high calcite precipitation rates are reflected in low concentrations of trace metals in the secondary precipitates.…”

Section: Scope For Passive Treatmentmentioning

confidence: 54%

“…While the geochemistry of steel slags in the groundwater environment has been well described at a small number of slag disposal sites (e.g. Bayless and Schulz 2003;Roadcap et al 2005), the constituent and behaviour of steel slag leachate in the surface water environment has received less attention. Steel slag leachates are of ecological concern to surface waters due to excess rates of calcite precipitation which armour benthic habitats and reduce light penetration to benthic primary producers (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogeochemistry of Alkaline Steel Slag Leachates in the UK

Mayes

Younger

Aumonier

2008

Water Air Soil Pollut

103

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Drainage from steel slag disposal sites can be extremely alkaline and a source of pollution to surface and ground waters. Data is presented detailing the hydrogeochemistry of seven highly alkaline (pH> 10) steel slag surface discharges in the UK. While there is the consistent presence of Ca-OH type groundwater in all the discharges, there are clear disparities in hydrochemical facies within and between sites, reflecting native hydrochemistry, source material and hydrogeological setting. The longevity of the pollution problem from steel slag disposal sites is highlighted at one site where the water quality records date back three decades. The consistent presence of Al, B, Ba, Fe, Sr, V and occasional presence of Cr, Mo, Ni, Pb were found at concentrations typically below surface water quality standards in the leachates. Some of the monitored metals (Al, Fe, Ni, V) were found to be lost from solution downstream of emergence in calcitedominated precipitates which rapidly form at all sites at rates up to 100 g m −2 day −1 . The low concentrations of potentially problematic trace elements in both solution and the sediments are discussed with regard development of economically viable passive treatment wetlands for highly alkaline industrial discharges.

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Section: Scope For Passive Treatmentmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Hydrogeochemistry of Alkaline Steel Slag Leachates in the UK

Mayes

Younger

Aumonier

2008

Water Air Soil Pollut

103

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“…Additionally, zeolites could be present at low concentrations resulting from weathering of the slag minerals and glass (Nadine Piatak, U.S. Geological Survey, written commun., 2004). The calcium-silicate minerals and glasses of similar composition are typical of steel slag (Bayless and Schulz, 2003;Ceramics Research Center, 2003) and account for the bulk composition (Ca 2 SiO 4 = 2 CaO + SiO 2 ;…”

Section: Considerations For Remediation Of the Abandoned Mine Drainagmentioning

confidence: 99%

Assessment of characteristics and remedial alternatives for abandoned mine drainage : case study at Staple Bend Tunnel unit of Allegheny Portage Railroad National Historic Site, Cambria County, Pennsylvania, 2004

Cravotta¹

2005

Open-File Report

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“…In addition to extremely high pH values, the waters are characterized by high content of total dissolved solids (TDS), oxygen depletion, tufa precipitation, the occurrence of color and odor nuisances, and the release of sulfur. Slag-related mineral precipitation may hold rainwater, disrupt natural groundwater flow patterns, and cause bed-sediment armoring in adjacent surface-water systems [11][12]. Variations in metal concentrations of more than one order of magnitude were found in leachates from different sites [7][8].…”

Section: Introductionmentioning

confidence: 99%

Main and Trace Element Distribution in Slag-Leachate-Tufa System Precipitate

Smieja-Król¹,

Bauerek²,

Bebek³

2017

Pol. J. Environ. Stud.

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Detailed chemical and mineralogical analyses were conducted to characterize slag wastes, leachate, and associated tufa precipitates at an iron slag dump near Kraków in southern Poland. The slag contained elevated content of Cr (1,800-6,500 mg/kg), V (500-1,800 mg/kg), and Zn (up to 4,500 mg/kg). The negative environmental impact posed by the wastes can be potentially caused by the formation of leachate with extremely high pH (12.5-12.9), high sulphate (720 mg/l) and K concentrations (420-520 mg/l), and elevated concentrations of fluoride (1.7-2.1 mg/l) and Al (up to 2.7 mg/l). A dominant feature of the leachate was massive precipitation of calcareous tufa forming a cascade of tufa barrier ponds at the base of the slag dump. The tufa preferentially concentrated Pb, Sr, Ba, Rb, sulfur, and phosphorus, while Fe, Zn, Mg, Mn, Cr, and V were depleted relative to the content in the slag material.

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Mineral precipitation and dissolution at two slag-disposal sites in northwestern Indiana, USA

Cited by 34 publications

References 33 publications

Hydrogeochemistry of Alkaline Steel Slag Leachates in the UK

Hydrogeochemistry of Alkaline Steel Slag Leachates in the UK

Assessment of characteristics and remedial alternatives for abandoned mine drainage : case study at Staple Bend Tunnel unit of Allegheny Portage Railroad National Historic Site, Cambria County, Pennsylvania, 2004

Main and Trace Element Distribution in Slag-Leachate-Tufa System Precipitate

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