Stabilization of Pb and As in soils by applying combined treatment with phosphates and ferrous iron

Xenidis, Anthimos; Stouraiti, Christina; Papassiopi, Nymphodora

doi:10.1016/j.jhazmat.2010.01.006

Cited by 98 publications

(26 citation statements)

References 50 publications

(82 reference statements)

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“…Santona et al (2006) used red mud to remove Cd, Pb, and Zn from drinking water. Fine et al (2005) applied activated carbon and peat to remove Cd and Cr, whereas Xenidis et al (2010) used natural zeolites for the removal of Cd, Cr, Cu, and Ni. Industrial by-products and wastes were used for Cd and Pb removal (Mohan et al, 2007), whereas ferrous materials were used for Cu, Cr, Cd, Hg, and Pb removal from drinking water (Chowdhury and Yanful, 2010).…”

Section: Removal Of Heavy Metals From Drinking Watermentioning

confidence: 99%

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Chowdhury

Mazumder

Al-Attas

et al. 2016

Science of The Total Environment

716

296

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Heavy metals in drinking water pose a threat to human health. Populations are exposed to heavy metals primarily through water consumption, but few heavy metals can bioaccumulate in the human body (e.g., in lipids and the gastrointestinal system) and may induce cancer and other risks. To date, few thousand publications have reported various aspects of heavy metals in drinking water, including the types and quantities of metals in drinking water, their sources, factors affecting their concentrations at exposure points, human exposure, potential risks, and their removal from drinking water. Many developing countries are faced with the challenge of reducing human exposure to heavy metals, mainly due to their limited economic capacities to use advanced technologies for heavy metal removal. This paper aims to review the state of research on heavy metals in drinking water in developing countries; understand their types and variability, sources, exposure, possible health effects, and removal; and analyze the factors contributing to heavy metals in drinking water. This study identifies the current challenges in developing countries, and future research needs to reduce the levels of heavy metals in drinking water.

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Section: Removal Of Heavy Metals From Drinking Watermentioning

confidence: 99%

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Chowdhury

Mazumder

Al-Attas

et al. 2016

Science of The Total Environment

716

296

View full text Add to dashboard Cite

show abstract

“…5, with increasing of FeOS from 1 to 10 %, the soil pH decreased from about 7.5 to 6.5. It was reported that soil pH decreased from the initial value of 7.8 down to 6.4 when ferrous sulfate was added into soil at a rate of 1.5 % (w/w) (Xenidis et al 2010). Although FeOS application slightly decreased soil pH, this effect was less than that of ferrous Effect of FeOS/soil mass ratio on As immobilization Figure 6 shows the immobilization efficiency of water-soluble and NaHCO 3 -extractable As in soils at different mass ratios of FeOS/soil (w/w).…”

Section: Effect Of Feos On Soil Phmentioning

confidence: 99%

“…Due to its adsorption properties, iron-containing materials have been extensively investigated in the immobilization of As (Komárek et al 2013). Zero-valent iron (Ascher et al 2009;Kumpiene et al 2012) and ferrous sulfate (Kim et al 2003; Moore et al 2000;Xenidis et al 2010) have demonstrated its great ability to reduce the mobility of As. However, the application of zero-valent iron more than 5 % by weight can lead to soil structure problems, such as changes in porosity and aggregate (Mench et al 1999).…”

Section: Introductionmentioning

confidence: 99%

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

Yang

Liu

Chai

et al. 2015

Environ Sci Pollut Res

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A low crystalline Fe-oxyhydroxy sulfate (FeOS) was used to immobilize arsenic (As) in soils in this study. The effects of FeOS amount, treatment time and soil moisture on As immobilization were investigated. The results showed that water-soluble and NaHCO3-extractable As were immobilized by 53.4-99.8 and 13.8-73.3% respectively, with 1-10% of FeOS addition. The highest immobilization of water-soluble (98.5%) and NaHCO3-extractable arsenic (47.2%) was achieved under condition of 4% of FeOS and 80% of soil moisture. Further, more amounts of FeOS addition resulted in less time requirement for As immobilization. Sequential chemical extraction experiment revealed that easily mobile arsenic phase was transferred to less mobile phase. The FeOS-bonded As may play a significant role in arsenic immobilization. Under leaching with simulated acid rain at 60 times pore volumes, accumulation amount of As release from untreated soil and soil amended with FeOS were 98.4 and 1.2 mg, respectively, which correspond to 7.69 and 0.09% of total As amounts in soil. The result showed that the low crystalline FeOS can be used as a suitable additive for arsenic immobilization in soils.

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“…Both H 3 PO 4 and Ca(H 2 PO 4 ) 2 were added to 2.5 kg of soils in solution forms as the stabilizing additives at a 2.5:1 molar ratio of P/Pb [12], and zeolite was added with a mass fraction of 1% (w/w) [13]. The amended soils were thoroughly homogenized in large plastic containers prior to use.…”

Section: Incubation Experimentsmentioning

confidence: 99%

Using Phosphorus and Zeolite to Immobilize Lead in Two Contrasting Contaminated Urban Soils

Jia

Lü

et al. 2016

Pol. J. Environ. Stud.

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Stabilization of Pb and As in soils by applying combined treatment with phosphates and ferrous iron

Cited by 98 publications

References 50 publications

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries

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

Using Phosphorus and Zeolite to Immobilize Lead in Two Contrasting Contaminated Urban Soils

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