Influence of solution acidity and CaCl2 concentration on the removal of heavy metals from metal-contaminated rice soils

Kuo, S.; Lai, Miao; Lin, Chi‐Wen

doi:10.1016/j.envpol.2006.02.001

Cited by 100 publications

(65 citation statements)

References 25 publications

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“…1 g of dry sediment was leached with 10 mL of extractant solution 0.2 mol.L − 1 HCl (Kuo et al, 2006) or 0.05 mol.L − 1 EDTA (Chao, 1984;Sahuquillo et al, 2003), at room temperature and shaken for 1 h. The resulting mixture was filtered at 0.45 μm and the filtrate was analysed using ICP-AES.…”

Section: Single Extractionsmentioning

confidence: 99%

Comparison of EDTA, HCl and sequential extraction procedures, for selected metals (Cu, Mn, Pb, Zn), in soils, riverine and marine sediments

Leleyter¹,

Rousseau²,

Biree³

et al. 2012

Journal of Geochemical Exploration

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Section: Single Extractionsmentioning

confidence: 99%

Comparison of EDTA, HCl and sequential extraction procedures, for selected metals (Cu, Mn, Pb, Zn), in soils, riverine and marine sediments

Leleyter¹,

Rousseau²,

Biree³

et al. 2012

Journal of Geochemical Exploration

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“…The heavy metal contents increased significantly with the pH between 6.5 -7.5. However, the heavy metal contents decreased in alkaline soil samples when the pH was over 7.5 (Hellweg et al 2005;Kuo et al 2006;Li et al 2009). The Cation Exchange Capacity ranged from 12.36 -99.15 cmol kg -1 , which was relatively high, indicating that heavy metals could easily be released from the sediments to the water and pore water.…”

Section: Physical and Chemical Parameters Of The Sedimentmentioning

confidence: 99%

“…Because the proportions of fine particles (< 63 muon m) and organic components and the AVS content are the highest in Taihu lake sediments during the spring, these conditions are conducive for sediment to be adsorbed and combined with heavy metals (Hellweg et al 2005;Kuo et al 2006). In addition, decayed hydrobiological residues from the previous year are reserved in sediments and new aquatic organisms have not begun to grow in sediments, so the effects of biological activities are still relatively small.…”

Section: Seasonal and Spatial Variability Of Heavy Metalsmentioning

confidence: 99%

Seasonal, Spatial Distribution and Ecological Risk Assessment of Heavy Metals in Surface Sediments from a Watershed Area in Gonghu Bay in Taihu Lake, China

Wang¹,

Li²,

Wang³

et al. 2014

Terr. Atmos. Ocean. Sci.

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Surface sediments from five stations within Gonghu Bay in Taihu Lake, China, were sampled for seasonal and spatial metal contamination analysis variations and ecological risks assessment from April 2009 to January 2010. The Contamination Factor (CF) and geo-accumulation index (Igeo) indicated that the sediments in Gonghu Bay ranged from unpolluted to moderately polluted, except for Cd. The one-way ANOVA analysis results showed that the Pb, Zn, Cr, and Cu concentrations were higher at station 3 (lake inlet) and the Cr, Pb, and Zn concentrations were significantly higher in the spring. Additionally, using BCR's sequential extraction, the results showed that the fractionated metals Zn and Cd were observed as bioavailable fractions in the sediments, which could have potential moderate mobility in the water system. There was a significant increase in the bioavailable form during winter. The ratio of secondary and primary phrase (RSP) decreased according to the order Zn > Cu > Ni > Pb > Cd > Cr. Finally, these results indicated that the sediments of Gonghu Bay were polluted by Cd, Zn, and Cu, which provides a scientific basis for effectively protecting sediments in watershed areas from long-term heavy metal accumulation.

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“…Unacceptable health and aesthetic problems are associated with untreated sewage pooling on the ground surface or being directly discharged into receiving waterways. So the aim of our work is to estimate the mobility of HMs in the amended soils with sludge and its mixtures with lime, and to estimate the mobility and bioavailability of metals using a modified BCR procedure ) and two single extractions of water (Meers et al 2006) and CaCl 2 (Kuo et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Effect of liming on the distribution of heavy metals in untreated industrial sewage sludge produced in Pakistan for the cultivation of Sorghum bicolor (L.)

et al. 2007

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The recycling of sewage sludge on agriculture land represents an alternative, advantageous, disposal of this waste material. The aim of the present study was to evaluate the feasibility of using industrial sewage sludge, produced in Pakistan, as a fertiliser. Agricultural soil amended with 25% (w/w) sewage sludge with or without lime treatment was used for growing a variety of sorghum (PARC-SS-1). The mobility of the heavy metals (HMs) (Cd, Cu, Cr, Ni, Pb and Zn) and metalloid (As) in the untreated industrial waste water sewage sludge (UIWS) samples were assessed by applying a modified BCR (Community Bureau of Reference) sequential extraction procedure. The single extraction procedure comprised of the application of mild extractant (CaCl 2 ) and water for the estimation of the proportion of easily soluble metal fractions. The precision and accuracy of BCR was evaluated by using a certified reference material of soil amended with sewage sludge BCR 483. The plant available metal contents, as extracted by the deionised water and 0.01 M CaCl 2 solution and exchangeable fraction of BCR sequential, decreased with lime application in the range of 10-44% for As, Cr, Ni, Pb and Zn, except in the cases of Cd and Cu, where their mobility was increased by 10% and 24%, respectively. Sludge amendment enhanced the dry weight yield of sorghum and the increase was more obvious after liming up to 25%. The uptake of HMs were lower in test samples (3.2-21.8%), except for Cu and Cd, which was higher (4%), while they were below the permissible limit of these metals. The present experiment demonstrates that liming was important in factors facilitating the growth of sorghum in sludge-amended soil.

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Influence of solution acidity and CaCl2 concentration on the removal of heavy metals from metal-contaminated rice soils

Cited by 100 publications

References 25 publications

Comparison of EDTA, HCl and sequential extraction procedures, for selected metals (Cu, Mn, Pb, Zn), in soils, riverine and marine sediments

Comparison of EDTA, HCl and sequential extraction procedures, for selected metals (Cu, Mn, Pb, Zn), in soils, riverine and marine sediments

Seasonal, Spatial Distribution and Ecological Risk Assessment of Heavy Metals in Surface Sediments from a Watershed Area in Gonghu Bay in Taihu Lake, China

Effect of liming on the distribution of heavy metals in untreated industrial sewage sludge produced in Pakistan for the cultivation of Sorghum bicolor (L.)

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