Evaluation of monobasic calcium phosphate for the immobilization of heavy metals in contaminated soils from Lavrion

Theodoratos, Panagiotis; Papassiopi, Nymphodora; Xenidis, Anthimos

doi:10.1016/s0304-3894(02)00061-4

Cited by 72 publications

(56 citation statements)

References 8 publications

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“…Phosphate is not recommended for arsenic polluted soils, as competition between arsenate and phosphate can provoke increased arsenic levels in plants, causing risks of food chain propagation and accumulation (Alam et al, 2001, Cao et al, 2003b, Tokunaga and Hakuta, 2002, Theodoratos et al, 2002.…”

Section: Discussionmentioning

confidence: 99%

The use of indigenous plant species and calcium phosphate for the stabilization of highly metal-polluted sites in southern Poland

et al. 2005

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Highly metal-polluted (Pb, Cd, Zn) soil from a non-ferrous mine and smelter site in southern Poland, further referred to as ''Waryn´ski'' soil, was used to test indigenous plant species for stabilization effectiveness of heavy metals in soils. Results of pilot investigations with commercially available cultivars of plant species showed that these cultivars could not grow on this highly polluted soil even with the application of soil amendments to stabilize the heavy metals. Based on these results, mesocosm and field experiments with an indigenous, metal-tolerant ecotype of Deschampsia cespitosa from the Warynski site were carried out. The mesocosm experiment showed that applications of calcium phosphate (3.8% w/w) as a heavy metal-stabilizing amendment decreased Cd and Zn concentrations 2 and 3-fold respectively in leachates, whereas lead content was not significantly changed. This decrease in the concentration of heavy metals in leachates was correlated with a lower accumulation of Pb, Cd and Zn in the roots and shoots of D. cespitosa, ecotype Warynski. In the field experiment, lower accumulations of Cd in roots and shoots and Zn in shoots in the amendment added plot were observed during the second year of investigations. In the first growing season, D. cespitosa plant cover in the amendment enriched mesocosms ranged from 95 to 100%, compared to 10% in mesocosms without calcium phosphate. In the second year of the experiment, in non-amendment enriched mesocosms D. cespitosa was substituted with Cardaminopsis arenosa (95% cover). C. arenosa is an undesirable species for phytostabilization, as it accumulates high amounts of zinc and cadmium in its shoots, even thought it provided better growth cover in not amended soils. However, in amended mesocosms, soil surface cover by D. cespitosa was still very high (90%). Similar results were obtained in field experiments. Addition of calcium phosphate to the soil also resulted in excellent D. cespitosa root system development when compared to soils without amendment. In amended mesocosms, high plant cover and root system development significantly decreased the volume of leachates and improved water retention. These results indicate that the use of D. cespitosa, ecotype Waryn´ski in combination with calcium phosphate as a heavy metals immobilizing agent is sufficient to restore a dense vegetative cover to highly heavy metal-polluted soil.

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Section: Discussionmentioning

confidence: 99%

The use of indigenous plant species and calcium phosphate for the stabilization of highly metal-polluted sites in southern Poland

et al. 2005

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“…However, it is possible that additives interacted with trace elements and nutrients in the soil; washing with chelators could remove essential elements from the soil, and adding Slovakite could make them less bioavailable. Theodoratos et al (2002) also reported that soil treatment with Ca-phosphate had a negative effect on Phaseolus vulgaris growth, which was combined with a deficiency of Ca in the leaves. In contrast to these observations, Geebelen et al (2003) reported that soil amendments did not significantly decrease plant biomass production on any of the tested soils, and significantly increased plant biomass produced on the most polluted soil.…”

Section: Pb Phytoavailabilitymentioning

confidence: 95%

“…Theodoratos et al (2002) reported that phosphate soil amendment in molar ratios PO 4 3+ /Pb higher than 0.5 effectively reduced Pb in TCLP extract, while the same treatments failed to reduce Pb phytoavailability. Van Benschoten et al (1997) reported that different Pb contaminated soils successfully passed TCLP limits after extraction with EDTA.…”

Section: Pb Mobilitymentioning

confidence: 99%

Bioavailability and mobility of Pb after soil treatment with different remediation methods

Finzgar¹,

Kos²,

Leštan³

2006

PLANT SOIL ENVIRON

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The risk of Pb contaminated soil after treatment with different remediation techniques was assessed. Soil vitrification (microwaves) reduced Pb orally available from the stomach and intestinal phase measured by a physiologically based extraction test. Solidification of Pb (Slovakite) did not reduce the concentration of orally available Pb and increased the Pb uptake by Thlaspi goesingens for 2-times compared to plants grown on the original soil. Soil extraction with 40 mmol/kg EDTA removed 57.6% of Pb. However, the concentration of orally available Pb and Pb uptake by T. goesingens increased. The concentration of mobile soil Pb also increased for 14-times measured by a toxicity characteristic leaching procedure. Soil leaching with 10 mmol/kg biodegradable chelator [S,S] ethylenediamine disuccinate and using a horizontal permeable reactive barrier for Pb accumulation from the washing solution removed 17.8% of Pb, but increased Pb uptake by T. goesingens by 3-times and slightly increased the concentration of Pb in the intestinal phase. Leaching did not significantly effects Pb availability from the stomach phase or Pb mobility.

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“…In the case of sewage sludge contaminated loam soil the CEC decreased in function of the amount of ash residue added, thus the observed stabilisation in the case of water and acetate soluble Zn concentration can be traced back to the precipitation of zincphosphate due to the P content of ash residue (Crannell et al, 2000;Theodoratos et al, 2002;Diyab et al, 2003).…”

Section: Sinapis Alba Root and Shoot Growth Inhibition Testmentioning

confidence: 99%

A Blend of Bioash and Gypsum Utilized for Agro-Environmental Purposes in a Soil Incubation Experiment

Rékási¹,

Uzinger²,

Szécsy³

et al. 2015

AEER

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Abstract. Soil improver, nutrient supplier and heavy metal stabilizer effects of ash residue remaining after the process for K recovery was examined in a soil incubation model experiment using two soil types (acid sandy soil and neutral loam soil) at 4 ash residue dose levels (0, 1, 3, 5%). Possible environmental risks posed by its application were also studied by ecotoxicological assays. As the result of ash residue treatment alkalinity of the soils has been raised in all treatments. In the case of acid soil even the use of 1% of ash residue proved to be enough for neutralising the soil pH. Ash residue is principally suitable for K and P supply and mostly in soils with poor nutrient content, where ash residue applied in 1% dose is able to increase the concentration of plant available K and P significantly. According to the results, the ash residue proved to be able to decrease the mobility of Pb and Zn which means that it can be an effective stabilizer in acid and neutral soils. Stabilization has probably occurred via adsorption. Based on the findings of the ecotoxicological assays, the use of 1% ash residue does not present substantial environmental risk.

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Evaluation of monobasic calcium phosphate for the immobilization of heavy metals in contaminated soils from Lavrion

Cited by 72 publications

References 8 publications

The use of indigenous plant species and calcium phosphate for the stabilization of highly metal-polluted sites in southern Poland

The use of indigenous plant species and calcium phosphate for the stabilization of highly metal-polluted sites in southern Poland

Bioavailability and mobility of Pb after soil treatment with different remediation methods

A Blend of Bioash and Gypsum Utilized for Agro-Environmental Purposes in a Soil Incubation Experiment

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