Geochemical processes controlling fate and transport of arsenic in acid mine drainage (AMD) and natural systems

Cheng, Hefa; Hu, Yuanan; Luo, Jian; Xu, Bin; Zhao, Jianfu

doi:10.1016/j.jhazmat.2008.10.070

Cited by 387 publications

(183 citation statements)

References 158 publications

(217 reference statements)

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“…The risks posed by other metals, including As, Pb, Cu, Cr and Ni, were not high, either, because their contents in the surface sediments were not very high and they were mostly present in the residual fraction. Heavy metals found in the surface sediments in the non-aquafarming zone could come from multiple sources, such as industrial and municipal wastewaters, mine discharge, irrigation discharge, and local rivers and creeks, along with erosion of rocks and soil parent materials (Tanner et al, 2000;Dai et al, 2007;Meng et al, 2008;Besser et al, 2009;Cheng et al, 2009;Cheng and Hu, 2010a;Hosono et al, 2010Hosono et al, , 2011. In addition, deposition of aerosol particles emitted from vehicles, coal-fired plants and waste incineration could also be a source of heavy metals Cheng and Hu, 2010a,b).…”

Section: Heavy Metals In Surface Sedimentsmentioning

confidence: 99%

“…Arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) are some of the most common heavy metal pollutants (Hakanson, 1980;Chen et al, 1991;Wong et al, 2001). These metals can enter estuaries and coastal waters through the discharge of industrial and municipal wastewaters, storm run-off, dust deposition, mine discharge, waste incineration, and other diffuse sources (Tanner et al, 2000;Dai et al, 2007;Meng et al, 2008;Zhang et al, 2008;Cheng et al, 2009;Besser et al, 2009;Cheng and Hu, 2010a,b;Hosono et al, 2010Hosono et al, , 2011. Sediment-bound heavy metals have a tendency to adsorb and accumulate on finegrained particles that eventually move into the depositional areas (Zhang et al, 2001;Morillo et al, 2002;Jain, 2004;Man et al, 2004;Qiu et al, 2005;Singh et al, 2005;Mendiguchía et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Heavy metal pollution in sediments of a typical mariculture zone in South China

Zhang

Liu

Cheng

et al. 2012

Marine Pollution Bulletin

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161

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Section: Heavy Metals In Surface Sedimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heavy metal pollution in sediments of a typical mariculture zone in South China

Zhang

Liu

Cheng

et al. 2012

Marine Pollution Bulletin

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161

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“…Under such pH conditions as observed in the study area, As becomes more mobile compared to other metals. Although arsenopyrite has been identified as a major sulphide mineralization event within this catchment, the relatively low dissolved concentrations of As can be related to its strong tendency to adsorb on hydrous Mn oxide mineral surfaces (Smedley and Kinniburgh 2002;Cheng et al 2009). Factor 4 is composed of Hg and pH and Fe and Mn levels in some samples were above the WHO standards for drinking water.…”

Section: Sources and Geochemical Behaviour Of Trace Metals In Streamwmentioning

confidence: 99%

Seasonal Hydrological Inputs of Major Ions and Trace Metal Composition in Streams Draining the Mineralized Lom Basin, East Cameroon: Basis for Environmental Studies

et al. 2017

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Purpose The aim of this study is to assess the seasonal variation in major ion distribution patterns and identify the origin and geochemical behavior of some trace metals of streamwaters bathing the mineralized Lom Basin. Methods Eighty-one water samples were collected during the dry and wet seasons and analyzed for major ions using AAS and 12 trace metals (Fe, Mn, V, Cr, Co, Ni, Cu, Zn, As, Cd, Pb, Hg) by ICP-MS. Results All physicochemical parameters besides pH and Cl -varied narrowly between both seasons. No seasonal variability was observed for Cl -given its conservative nature, while NO 3 -levels decreased in the wet period due to the dilution effect. Similarly, SO 4 2-concentrations were low for both seasons reflecting the dissolution of low sulphide minerals associated with gold deposits. In contrast, the concentration of Ca 2? , Mg 2? , Na ? , K ? and HCO 3 -slightly increased during the wet season as they are flushed from the soil layers by rain. Water samples had very low concentrations (\ 1 lg/l) of V, Cr, Co, Cu, Zn, Cd, Pb and significant concentrations of Fe and Mn.Conclusions The seasonal regime of streamwater chemistry is controlled by groundwater supply of major cations and HCO 3 -from chemical weathering, leaching of ions from surface soil layers during precipitation and dilution of nitrate by surface runoff during the wet season. In this tropical basin, low acidity and trace metal loadings revealed lateritic weathering of sulphides, entrapment of trace metals in Fe and Mn oxides and leaching into deep groundwater. Although the streams have not been impacted, these findings may guide policymakers for water chemistry evaluation in Cameroon.

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“…In most cases, elevated As mobilization may be related to the reductive conditions in flooded soils (Cheng et al, 2009;Langner and Inskeep, 2000;Shaheen et al, 2015). Both field and laboratory experiments to date have identified the reductive dissolution of Fe(III) (hydr)oxides driven by microbial metabolism of dissolved organic matter (DOM) to be a predominant mechanism causing inorganic As mobilization (Burton et al, 2008;Van Geen et al, 2006;Yamaguchi et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Solid-solution partitioning and thionation of diphenylarsinic acid in a flooded soil under the impact of sulfate and iron reduction

Zhu

et al. 2016

Science of The Total Environment

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• We first investigated the solid-solution partitioning of DPAA in a flooded soil.• We first examined the impacts of sulfate and iron reduction on DPAA partitioning.• Elevated DPAA mobilization and thionation was observed in sulfide soil.• DPAA mobilization associated with Fe(III) reductive dissolution was demonstrated.• Enhanced mobilization of DPAA and sulfate reduction promoted DPAA thionation. Editor: Jay Gan Diphenylarsinic acid (DPAA) is a major organic arsenic (As) compound derived from abandoned chemical weapons. The solid-solution partitioning and transformation of DPAA in flooded soils are poorly understood but are of great concern. The identification of the mechanisms responsible for the mobilization and transformation of DPAA may help to develop effective remediation strategies. Here, soil and Fe mineral incubation experiments were carried out to elucidate the partitioning and transformation of DPAA in anoxic (without addition of sulfate or sodium lactate) and sulfide (with the addition of sulfate and sodium lactate) soil and to examine the impact of sulfate and Fe(III) reduction on these processes. Results show that DPAA was more effectively mobilized and thionated in sulfide soil than in anoxic soil. At the initial incubation stages (0-4 weeks), 6.7-74.5% of the total DPAA in sulfide soil was mobilized likely by sorption competition with sodium lactate. At later incubation stage (4-8 weeks), DPAA was almost completely released into the solution likely due to the near-complete Fe(III) reduction. Scanning transmission X-ray microscopy (STXM) results provide further direct evidence of elevated DPAA release coupled with Fe(III) reduction in sulfide environments. The total DPAA fraction decreased significantly to 24.5% after two weeks and reached 3.4% after eight weeks in sulfide soil, whereas no obvious elimination of DPAA occurred in anoxic soil at the initial two weeks and the total DPAA fraction decreased to 10.9% after eight weeks. This can be explained in part by the enhanced mobilization of DPAA and sulfate reduction in G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f o Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v sulfide soil compared with anoxic soil. These results suggest that under flooded soil conditions, Fe(III) and sulfate reduction significantly promote DPAA mobilization and thionation, respectively, and we suggest that it is essential to consider both sulfate and Fe(III) reduction to further our understanding of the environmental fate of DPAA.

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Geochemical processes controlling fate and transport of arsenic in acid mine drainage (AMD) and natural systems

Cited by 387 publications

References 158 publications

Heavy metal pollution in sediments of a typical mariculture zone in South China

Heavy metal pollution in sediments of a typical mariculture zone in South China

Seasonal Hydrological Inputs of Major Ions and Trace Metal Composition in Streams Draining the Mineralized Lom Basin, East Cameroon: Basis for Environmental Studies

Solid-solution partitioning and thionation of diphenylarsinic acid in a flooded soil under the impact of sulfate and iron reduction

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