Schwertmannite and Fe oxides formed by biological low-pH Fe(II) oxidation versus abiotic neutralization: Impact on trace metal sequestration

Burgos, William D.; Borch, Thomas; Troyer, Lyndsay D.; Luan, Fubo; Larson, Lance N.; Brown, Juliana F.; Lambson, Janna; Shimizu, Masayuki

doi:10.1016/j.gca.2011.10.015

Cited by 106 publications

(51 citation statements)

References 42 publications

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“…The obtained sulphate levels are very low, and they can be ascribed to the local alkaline carbonate environment which favours the precipitation of CaSO 4 . Although sulphur (sulphate form) is notorious for its role in acid/coalmine drainage problems (Burgos et al, 2012), the Raša coal is characterised by low pyritic and sulphate (below 0.50%) sulphur levels (Chou, 1997). Hence, the sulphate levels dissolved in surface streams of the Labin City area are low and should not pose an environmental threat.…”

Section: Tablementioning

confidence: 99%

Geochemistry of Croatian superhigh-organic-sulphur Raša coal, imported low-S coal and bottom ash: their Se and trace metal fingerprints in seawater, clover, foliage and mushroom specimens

Medunić

Kuharić

Krivohlavek

et al. 2018

IJOGCT

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Abstract:The Labin City area has represented the major Croatian coal mining, metal industry and coal-fired electricity centre for more than two centuries. The domestic superhigh-organic-sulphur (SHOS) Raša coal is a unique variety compared to other coal types worldwide, based on its highest organic sulphur values, up to 11%. It was utilised in the Plomin coal-fired power plant during the period 1970-2000, and was replaced by an imported low-S coal afterwards. This paper presents the levels of S, Se, V, U, Hg, Sr, Cd, Cr, Pb, Cu and Zn in the two coal types, their bottom ash, seawater and plant (clover, mushroom and foliage) specimens collected from the Labin City area, while the sulphate was measured in surface stream water. Their levels were compared with relevant legislative as well as the published data from different world localities. Data analysis was interpreted in the context of past and recent coal combustion activities.

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Section: Tablementioning

confidence: 99%

Geochemistry of Croatian superhigh-organic-sulphur Raša coal, imported low-S coal and bottom ash: their Se and trace metal fingerprints in seawater, clover, foliage and mushroom specimens

Medunić

Kuharić

Krivohlavek

et al. 2018

IJOGCT

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“…However, iron removal may also be achieved at low pH by promoting biological iron oxidation by acidophilic microorganisms. Low-pH biological iron oxidation might enhance existing passive treatment technologies or be developed for novel alternative bioremediation strategies (5,6).…”

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confidence: 99%

Geochemical Niches of Iron-Oxidizing Acidophiles in Acidic Coal Mine Drainage

Jones

Kohl

Grettenberger

et al. 2015

Appl Environ Microbiol

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A legacy of coal mining in the Appalachians has provided a unique opportunity to study the ecological niches of iron-oxidizing microorganisms. Mine-impacted, anoxic groundwater with high dissolved-metal concentrations emerges at springs and seeps associated with iron oxide mounds and deposits. These deposits are colonized by iron-oxidizing microorganisms that in some cases efficiently remove most of the dissolved iron at low pH, making subsequent treatment of the polluted stream water less expensive. We used full-cycle rRNA methods to describe the composition of sediment communities at two geochemically similar acidic discharges, Upper and Lower Red Eyes in Somerset County, PA, USA. The dominant microorganisms at both discharges were acidophilic Gallionella-like organisms, "Ferrovum" spp., and Acidithiobacillus spp. Archaea and Leptospirillum spp. accounted for less than 2% of cells. The distribution of microorganisms at the two sites could be best explained by a combination of iron(II) concentration and pH. Populations of the Gallionella-like organisms were restricted to locations with pH >3 and iron(II) concentration of >4 mM, while Acidithiobacillus spp. were restricted to pH <3 and iron(II) concentration of <4 mM. Ferrovum spp. were present at low levels in most samples but dominated sediment communities at pH <3 and iron(II) concentration of >4 mM. Our findings offer a predictive framework that could prove useful for describing the distribution of microorganisms in acid mine drainage, based on readily accessible geochemical parameters.

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“…The emissions of CO 2 , SOx, NOx, and some volatile inorganic elements (As, Be, Cd, Co, Cr, Hg, Mn, Ni, Pb, Sb, Se), and their compounds in fl ue gases from coal combustion, may have important environmental impacts such as global temperature rising, and direct hazards of volatile compounds to agriculture, soil, water, and human health. Amongst them, sulphur is the most notorious environmental contaminant, resulting in acid rain (Kolker and Finkelman, 1998;Sparks, 2003;Rađenović, 2006;Kampa and Castanas, 2008), and also acid-mine drainage problems (Burgos et al, 2012). Numerous studies have shown that coal-fi red power plants are one of the largest global sources of pollution that pose a potential threat to the environment and human health (Laumbach et al, 2015).…”

Section: Air Pollution Associated With Coal Combustion Processesmentioning

confidence: 99%

Comparative Review of Croatian and Indian Air Pollution Studies With Emphasis on Pollutants Derived by Coal Combustion

Rađenović

Medunić

Saikia

2016

MGPB

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Human health, the environment, and climate are being profoundly aff ected by complex pollutant interactions in the atmosphere. Almost all human activities cause the emissions of air pollutants. Their understanding and quantifi cation is the fi rst step towards the control and mitigation of air pollution. The general aim of this paper is to summarise the fi ndings of selected Croatian and Indian papers addressing air pollution, particularly those focusing on sulphur and aerosols associated with coal-fi red power plants. The two countries are essentially diff erent regarding their size, geography, history, economy, industrial potential, to name but a few. However, they both have had certain relations to the fossil fuel extraction and its usage in power stations and industry for decades. Various research approaches are presented, together with a brief outline of national air pollution policies.

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Schwertmannite and Fe oxides formed by biological low-pH Fe(II) oxidation versus abiotic neutralization: Impact on trace metal sequestration

Cited by 106 publications

References 42 publications

Geochemistry of Croatian superhigh-organic-sulphur Raša coal, imported low-S coal and bottom ash: their Se and trace metal fingerprints in seawater, clover, foliage and mushroom specimens

Geochemistry of Croatian superhigh-organic-sulphur Raša coal, imported low-S coal and bottom ash: their Se and trace metal fingerprints in seawater, clover, foliage and mushroom specimens

Geochemical Niches of Iron-Oxidizing Acidophiles in Acidic Coal Mine Drainage

Comparative Review of Croatian and Indian Air Pollution Studies With Emphasis on Pollutants Derived by Coal Combustion

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