Arsenic immobilization in the contaminated soil using poorly crystalline Fe-oxyhydroxy sulfate

Yang, Zhihui; Liu, Lin; Chai, Liyuan; Liao, Yingping; Yao, Wenjie; Xiao, Ruiyang

doi:10.1007/s11356-015-4455-1

Cited by 60 publications

(4 citation statements)

References 30 publications

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“…Nickel and zinc have an average immobilization of 96% and 99%, respectively (Table 11), which are fairly expected for these trace elements [45]. Arsenic has an immobilization rate, on average, of 99% indicating coprecipitation with secondary iron minerals [46]. Molybdenum (as molybdate) has, as expected, a lower immobilization rate at around 94%.…”

Section: Nisupporting

confidence: 70%

“…Specific immobilization mechanisms are hard to determine, but secondary immobilization takes place between the release from the waste and the sampling point in the surface waters. A major fraction of the release of trace elements is immobilized on surfaces close to the release through sorption, coprecipitation with iron oxyhydroxides and precipitation [45][46][47]. Immobilization in the pit lakes through sedimentation seems to be minor as the concentrations in the sediments are fairly low as indicated by the concentrations found in pit lake Norrtorpssjön (43 mg/kg dw As, 102 mg/kg dw Mo, 25 mg/kg dw Ni, 86 mg/kg dw U and 68 mg/kg dw V) [32].…”

Section: Trace Element/sulfate Ratiosmentioning

confidence: 99%

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Estimating Release of Trace Elements from an Area with Historical Open Pit Mining of Alum Shale Using Mass Transport and Element/Sulfate Ratios Calculations

2020

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Alum shale was mined for oil and uranium production in Kvarntorp, Sweden, 1942–1966. Remnants such as pit lakes, exposed shale and a 100-meter-high waste deposit with a hot interior affect the surrounding environment, with elevated concentrations of, e.g., Mo, Ni and U in the recipient. Today most pit lakes are circumneutral while one of the lakes is still acidic. All pit lakes show signs of sulfide weathering with elevated sulfate concentrations. Mass transport calculations show that for elements such as uranium and molybdenum the western lake system (lake Söderhavet in particular) contributes the largest part. For sulfate, the two western lakes contribute with a quarter each, the eastern lake Norrtorpssjön about a third and a serpentine pond system receiving water from the waste deposit contributes around 17%. Except for a few elements (e.g., nickel 35%), the Serpentine system (including the waste deposit area) is not a very pronounced point source for metal release compared to the pit lakes. Estimates about future water runoff when the deposit has cooled down suggest only a slight increase in downstream water flow. There could possibly be first flush effects when previous hot areas have been reached by water.

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Section: Nisupporting

confidence: 70%

Section: Trace Element/sulfate Ratiosmentioning

confidence: 99%

Estimating Release of Trace Elements from an Area with Historical Open Pit Mining of Alum Shale Using Mass Transport and Element/Sulfate Ratios Calculations

2020

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“…The characteristics of the soil samples were determined according to the previously described protocols . Briefly, soil pH was measured by a pH meter and the ratio of soil to water was 1:5 v / v .…”

Section: Methodsmentioning

confidence: 99%

Isolation and Identification of Two Novel Alkaligenous Arsenic(III)‐Oxidizing Bacteria From a Realgar Mine, China

Yang

Liu

Liao

et al. 2016

CLEAN Soil Air Water

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Two novel As(III)‐oxidizing bacterial strains were isolated from highly arsenic‐contaminated (2938.6 mg/kg) soils. The phylogenetic tree based on the bacterial 16S rRNA sequences indicated that the two strains were closely related to Brevibacterium yomogidense and Bacillus beijingensis strain YMD‐2, respectively, and were therefore named Brevibacterium sp. YZ‐1 (YZ‐1) and Bacillus beijingensis YZ‐2 (YZ‐2). The strains YZ‐1 and YZ‐2 with vigorous tolerance to As(III) (1500 mg/L) can oxidize 73.5 and 66 mg/L As(III) in 72 h, respectively. Moreover, the two strains were alkaligenous and YZ‐2 increased the pH in the culture medium more effectively than YZ‐1 in 3 days. The optimum culture initial pH and temperature to oxidize As(III) were 8 and 30–31°C, respectively. The results indicate that it is promising to develop a cost‐effective and eco‐friendly bioremediation strategy to alkaline arsenic‐contaminated soils with the two strains, Brevibacterium sp. YZ‐1 and B. beijingensis YZ‐2.

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“…Studies have demonstrated that iron has a strong affinity for arsenic and can be utilized for soil remediation [12,8,13]. It has also been shown that poorly crystalline Fe-oxyhydroxy sulfate effectively removes arsenic from soils [14]. While numerous studies have investigated the toxicity of arsenic to rice plants, only a limited number have focused on microorganisms, which play a crucial role as decomposers in the soil ecosystem [15,13,16,17].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Arsenic and Biochar Levels on Soil Microbial Population and Enzymatic Activity

Pandey,

Singh,

Sharma

et al. 2023

IJPSS

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Arsenic (As) poses a pervasive environmental contamination problem on a global scale. Human activities have significantly contributed to the extensive presence of arsenic (As) in soils. Recently, there has been growing interest in exploring the potential of biochar in addressing the issue of As-contaminated soils. This study focused on evaluating the effects of two types of biochar, namely straw biochar and iron-modified biochar, on the composition of soil microbial communities and enzymatic activity in soil contaminated with arsenic. After conducting a pot experiment for a duration of 9 months, the microbial communities and enzymatic activity were analyzed. Biochar refers to carbon-rich porous solids that are produced by heating biomasses under low oxygen conditions. These biochars are regarded as environmentally friendly sorbents that can be employed for the treatment of different types of arsenic contamination. The increased abundance of soil microbial populations and the enhanced enzymatic properties suggest that biochar fosters the richness and diversity of bacterial communities. Consequently, these improvements in the soil environment and biological quality highlight the potential of iron-modified biochar as an alternative agent for remediating arsenic-contaminated soils.

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Arsenic immobilization in the contaminated soil using poorly crystalline Fe-oxyhydroxy sulfate

Cited by 60 publications

References 30 publications

Estimating Release of Trace Elements from an Area with Historical Open Pit Mining of Alum Shale Using Mass Transport and Element/Sulfate Ratios Calculations

Estimating Release of Trace Elements from an Area with Historical Open Pit Mining of Alum Shale Using Mass Transport and Element/Sulfate Ratios Calculations

Isolation and Identification of Two Novel Alkaligenous Arsenic(III)‐Oxidizing Bacteria From a Realgar Mine, China

Effect of Different Arsenic and Biochar Levels on Soil Microbial Population and Enzymatic Activity

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