Leachability of heavy metals and arsenic from slags of metal extraction industry at Angleur (eastern Belgium)

Ganne, Patrick; Cappuyns, Valérie; Vervoort, André; Buvé, Lucia; Swennen, Rudy

doi:10.1016/j.scitotenv.2005.03.022

Cited by 59 publications

(34 citation statements)

References 15 publications

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“…These values are much higher than those reported in the studies of Kavanagh et al (1997) and Ganne et al (2006) in mine wastes and soils, but comparable with the studies of Xu, Thornton (1985) and Cao, Ma (2004). Arsenic contents associated with Fe and Mn oxides (18.67-935 mg kg -1 ) showed positive correlation with those of water soluble As (r 2 = 0.929, p < 0.001), suggesting that the Fe and Mn oxides are the source of the more mobile and bioavailable As in stream sediments and impoundment materials.…”

Section: Impoundmentcontrasting

confidence: 74%

Arsenic and zinc in impoundment materials and related stream sediments from a polluted area in Eastern Slovakia: distribution, mobility, and water quality

Jankulár¹,

Hiller²,

Jurkovič³

et al. 2009

Journal of Hydrology and Hydromechanics

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The impoundment located near the village of Poša in eastern Slovakia is a significant source of arsenic. Waters penetrating the impoundment become enriched in As and other potentially toxic elements. As a consequence, the Kyjov brook and the Ondava River have been extensively polluted by arsenic. Although, zinc is of minor environmental significance regarding pollution in the area, it was also monitored to compare its behaviour with that of arsenic. The mobility and solid-state distribution of As and Zn in the impoundment materials and stream sediments have been investigated using a five-step sequential extraction procedure. Moreover, to investigate the bioavailability of As and Zn, two native plant species (Typha latifolia and Phragmites australis) growing at the site were collected and analyzed. The As concentrations in representative sediment and water samples ranged from 36.28 to 3208.35 mg kg -1 and from 4.05 to 612.8 μg l -1 , respectively, both being many times above the background levels. The Zn concentrations of environmental importance were found to be high only in the impoundment materials (up to 3390 mg kg -1 ). Although a part of As was present in a readily soluble form (6.62%), the majority of As was mainly associated with Fe/Mn oxides (37.30%) and residual phases (51%). Similarly, the most dominant fractions for zinc distribution were Fe/Mn oxides (38.5%), residual (34%) and exchangeable (18%). Combined results of the sequential extraction tests as well as chemical and mineralogical analysis indicated that As mobilisation potential from the sediments is likely controlled by Fe/Mn oxyhydroxide mineral phases. Plants growing in the impoundment had As concentrations 10 to 100 times higher than the same plants growing in a relatively nonpolluted area, indicating an enhanced bioavailability of arsenic in the area with high total As contents in the impoundment materials. Odkalisko, ktoré sa nachádza pri obci Poša (východné Slovensko), je významným zdrojom arzénu. Vody presakujúce cez materiál uložený v odkalisku sa tak obohacujú o As a ďalšie potenciálne toxické prvky. Dôsledkom je výrazné znečistenie toku Kyjov a rieky Ondava arzénom. Aj keď v tejto oblasti zinok nepredstavuje až tak veľký environmentálny problém, je zahrnutý v tejto štúdii s cieľom porovnať správanie sa týchto dvoch potenciálne toxických prvkov. Na štúdium pohyblivosti a distribúcie As a Zn v materiáloch odkaliska a v riečnych sedimentoch sa použila päťkroková sekvenčná extrakcia. Okrem toho sme skúmali bioprístupnosť As a Zn v dvoch typoch rastlín (Typha latifolia a Phragmites australis), ktoré prednostne rastú na odkalisku. Koncentrácie As v odobratých vzorkách sedimentov boli v intervale od 36,28 do 3208,35 mg kg -1 a v povrchových vodách od 4,05 do 612,8 μg l -1 . Tieto koncentrácie sú oveľa vyššie ako pozaďové hodnoty pre danú oblasť. Bolo zistené, že koncentrácie Zn významné z hľadiska znečistenia sú vysoké len v odkaliskových materiáloch (až 3390 mg kg -1 ). Aj keď určitý podiel As v sedimentoch bol prítomný v ľahko rozpustnej ...

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Section: Impoundmentcontrasting

confidence: 74%

Arsenic and zinc in impoundment materials and related stream sediments from a polluted area in Eastern Slovakia: distribution, mobility, and water quality

Jankulár¹,

Hiller²,

Jurkovič³

et al. 2009

Journal of Hydrology and Hydromechanics

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“…The initial pH of the CH 3 COOH solution was 3.02. The reason for this small difference in pH, despite the important difference in ANC, might be the short duration of the CH 3 COOH extraction test (16 h) in which the slow buffering reactions are not fully considered [36]. Hence, pH stat leaching tests, performed for a longer period (96 h in the present study) likely allow a better estimation of ANC from BA samples.…”

Section: Acid Neutralization Capacity (Anc) and Trace Element Releasementioning

confidence: 79%

Release of Trace Elements from Bottom Ash from Hazardous Waste Incinerators

et al. 2018

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Bottom ash is the major by-product of waste incineration and can contain trace elements (As, Cd, Co, Cu, Cr, Mo, Ni, Pb, and Zn) with concentrations up to thousands of mg·k −1 . In this study, a combination of different extractions and leaching tests (i.e., CH 3 COOH and ammonium-EDTA (Ethylenediaminetetraacetic acid) extractions and pH stat leaching tests) was used to investigate the potential release of trace elements from bottom ash samples derived from hazardous waste incineration plants. Although large variations have been found in the release of trace elements by different extractions, in general, the highest concentrations of most trace elements (except As and Mo) were released with the CH 3 COOH extraction, whereas the release of As and Mo was highest with the ammonium-EDTA extraction. Kinetics of element release upon acidification based on a pH stat leaching test at pH 4 could be related to the solid-phase speciation of some selected trace elements. The relatively high-potential mobility and elevated total concentrations of some trace elements imply a threat to the environment if these bottom ashes are not treated properly. Results of the present study may be useful to develop potential treatment strategies to remove contaminants and eventually recover metals from bottom ash.

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“…Physical weathering processes mainly drive the As-bearing mineral phases directly to the depositional site or the soil profile through mechanical transport, while chemical erosion leads to oxidative dissolution of the As-incorporated mineral phases, which subsequently move down-gradient as dissolved ionic As. Although physical weathering partly contributes to the overall As leaching processes, chemical leaching plays a crucial role through dissolution reactions (Ganne et al 2006). Two chemical processes dominantly govern As mobilization: first, oxidation of As-bearing sulphide minerals such as Fe(As, S) 2 or FeAsS by oxidising agents such as atmospheric O 2 (Lengke et al 2009) and second, dissolution/desorption of sorbed As from Fe-(oxyhydr)oxides due to changes in Eh and pH or the presence of PO 4 3-, HCO 3 -, and HSiO 4 3-as competitive ions.…”

Section: Mine Tailingsmentioning

confidence: 99%

Arsenic Geochemistry of Acid Mine Drainage

Paikaray

2014

Mine Water Environ

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Due to geochemical similarity between arsenic and sulphur, polymetallic sulphide deposits and pyrite/ arsenopyrite-bearing coal beds often contain exceptionally high concentrations of arsenic. Arsenic release from mine waste occurs after oxidative dissolution of sulphide minerals. Both arsenite and arsenate forms coexist in many mine drainage localities, with the latter oxidation state more common. The rate of arsenite oxidation to arsenate in such environments is mostly controlled by the availability of oxygen and arsenic-oxidizing microbes. Most released arsenic gets naturally attenuated within few meters downstream by adsorption and co-precipitation; amorphous precipitates such as schwertmannite or hydrous ferric oxides are better sinks than crystalline counterparts, such as goethite and jarosite. Because arsenate has a stronger affinity than arsenite for sorbents at acidic pH, arsenatedominated mine water often contains lower levels of arsenic than arsenite-dominated mine water. Secondary mineral precipitation is largely controlled by distribution of acid-neutralizing minerals, such as carbonates and aluminosilicates. In addition to natural attenuation, active and passive treatment of mine water can lower arsenic levels to meet legal limits.

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Leachability of heavy metals and arsenic from slags of metal extraction industry at Angleur (eastern Belgium)

Cited by 59 publications

References 15 publications

Arsenic and zinc in impoundment materials and related stream sediments from a polluted area in Eastern Slovakia: distribution, mobility, and water quality

Arsenic and zinc in impoundment materials and related stream sediments from a polluted area in Eastern Slovakia: distribution, mobility, and water quality

Release of Trace Elements from Bottom Ash from Hazardous Waste Incinerators

Arsenic Geochemistry of Acid Mine Drainage

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