Faragó T., Jurkovič ľ., Peťková K. & Hiller E., 2017: Column leaching of arsenic in coal ashimpacted soils using citric acid (Zemianske Kostoľany, Slovakia). Acta Geologica Slovaca, 9, 2, 163–170.
Column leaching of arsenic in coal ashimpacted soils using citric acid (Zemianske Kostoľany, Slovakia)
Tomáš Faragó, Ľubomír Jurkovič, Katarína Peťková & Edgar Hiller
Department of Geochemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Ilkovičova 6, 842 15 Bratislava, Slovakia; hiller@fns.uniba.sk
Abstract
This paper describes the mobilization of arsenic (As) in technosols (soils with high content of coal ashes) using 35–d experimental soil column studies. The two soil samples with high total concentrations of As (1100–1139 mg·kg-1) were collected from an environmental burden near the village of Zemianske Kostoľany, which is one of the most As-contaminated areas in Slovakia. Amorphous solid phases, mainly glasses of variable chemical compositions, Fe oxy-hydroxides and unburned coal residues, are the major components of the soil-ash samples. In this study, two different leaching agents (deionized water and 1 mM citric acid aqueous solution) were pumped through soil columns to assess the solubility of As. The results showed that citric acid was more efficient in the mobilization of As (> 14.5% of the total As content) than deionized water, confirming the assumption that organic acids produced by plants and soil microorganisms increase As leaching in soils. Soil column experiments with deionized water indicated lower extractabilities of As that ranged from 9.74% to 11.4%. In addition, water extractable As concentrations increased with increasing pH values of the leachates (R2 = 0.70 at p < 0.01). It was also observed that extraction time was an important factor, affecting the release of As from the soil-ash samples.
Key words: contaminated soil, environmental burden, arsenic mobility, soil column, low molecular weight organic acid, coal ash
Manuskript doručený: 2017-07-01
Manuskript revidovaný: 2017-11-30
Informácie
Pripravované články
AGEOS 2020, roč. 12, č. 1
- Lačný A., Bella P., Velšmid M. & Csibri T.: The Večerná-Čárka cave system (Kuchyňa-Orešany Karst, Malé Karpaty Mountains, Slovakia) – tectonically controlled phreatic speleogenesis in the marginal part of block mountains
- Mashhadi S.R., Nikfarjam M. & Mehrnia A.K.: Reinterpretation of resistivity and induced polarization data to explore gold mineralization zones at Zarzima prospect, Iran
- Mareková Ľ., Lánczos T., Milovský R. & Lačný A.: Stable isotopes and water chemistry in Čachtice Cave and Hladový prameň Cave in relation to karst topology, soil cover, and past land-use
- Hiller E. & Jurkovič Ľ.: Soil sorption and degradation of Agritox herbicide formulation containing Na-K-DMA MCPA salt as an active ingredient
- Vlček T., Hudáčková N., Jamrich M., Halásová E., Franců J., Nováková P., Kováčová M. & Kováč M.: Hydrocarbon potential of the Oligocene and Miocene sediments from the Modrany-1 and Modrany-2 wells (Danube Basin, Slovakia)
- Šedivá M., Obuch J. & Sabol M.: Avifauna from the Neanderthal Site of Prepoštská jaskyňa Cave (Bojnice I) Near Prievidza – Biostratigraphical and Palaeoecological Implications
- Malíčková I., Bačík P., Fridrichová J., Hanus R., Štubňa J., Milovská S. & Škoda R.: Detailed luminescence spectra interpretation of selected oxides: spinel from Myanmar and chrysoberyl – var. alexandrite from Tanzania
Archív
- AGEOS 2019, roč. 11, č. 2
- AGEOS 2019, roč. 11, č. 1
- AGEOS 2018, roč. 10, č. 2
- AGEOS 2018, roč. 10, č. 1
- AGEOS 2017, roč. 9, č. 2
- AGEOS 2017, roč. 9, č. 1
- AGEOS 2016, roč. 8, č. 2
- AGEOS 2016, roč. 8, č. 1
- AGEOS 2015, roč. 7, č. 2
- AGEOS 2015, roč. 7, č. 1
- AGEOS 2014, roč. 6, č. 2
- AGEOS 2014, roč. 6, č. 1
- AGEOS 2013, roč. 5, č. 2
- AGEOS 2013, roč. 5, č. 1
- AGEOS 2012, monografia
- AGEOS 2012, roč. 4, č. 2
- AGEOS 2012, roč. 4, č. 1
- AGEOS 2011, roč. 3, č. 2
- AGEOS 2011, roč. 3, č. 1
- AGEOS 2010, roč. 2, č. 2
- AGEOS 2010, roč. 2, č. 1
- AGEOS 2009, roč. 1, č. 2
- AGEOS 2009, roč. 1, č. 1
- AGEOS 2009, monografia
Návštevnosť
- Spolu: 41291
- Tento rok: 5286
- Tento mesiac: 685
- Tento týždeň: 215