Evaluation of the effectiveness of phosphate treatment for the remediation of mine waste soils contaminated with Cd, Cu, Pb, and Zn

Mignardi, Silvano; Corami, Alessia; Ferrini, Vincenzo

doi:10.1016/j.chemosphere.2011.09.050

Cited by 183 publications

(55 citation statements)

References 41 publications

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“…These amendments decrease the availability of heavy metals in contaminated soils based on changes in physicochemical properties of the soil, like soil pH and organic matter content (Adams et al 2004;Sauve et al 2003). Several studies have demonstrated that in situ heavy metal immobilization, using phosphate minerals (Cao et al 2009;Mignardi et al 2012), clay minerals (Sun et al 2013;Liang et al 2014), lime (Geeblen et al 2003), or organic matter (Karer et al 2015), is a costeffective and environmentally sustainable remediation technology. In addition, application of Zn fertilizer has been reported to decrease the accumulation of Cd in crops or vegetables.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

et al. 2017

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Purpose The aim of this study was to evaluate the effectiveness of soil amendments and foliar fertilizer on Cd and Pb immobilization in contaminated soils. Materials and methods A field experiment was conducted in contaminated soils, wherein four amendments (sepiolite (SE), single superphosphate (SSP), triple super phosphate (TSP), calcium magnesium phosphate (CMP)) in combination with one foliar fertilizer (ZnSO 4 ) were investigated to reduce Cd and Pb bioavailability in calcareous soils. Total Cd and Pb concentrations in wheat, soil, and amendments were determined using inductively coupled plasma mass spectrometry. Available concentrations of Cd and Pb in soils were extracted using diethylenetriamine pentaacetic acid. Results and discussion The results indicated that application of these amendments and foliar fertilizer significantly decreased Cd availability in soils and Cd accumulation in wheat (P < 0.05); however, the soil amendments plus Zn fertilizer did not significantly decrease Cd and Pb concentrations in wheat. Compared with the control, application of soil amendments effectively reduced the available Cd and Pb in soils by 25.69~54.13% and 9.86~42.14%, respectively. Accordingly, the reduction of Cd and Pb concentrations in wheat grain by the soil amendments was 20.68~41.38% and 23.68~55.26%, respectively.Conclusions Among all the treatments, the addition of SE + SSP and SE + CMP exhibited the most efficiency in reducing Cd and Pb availability, respectively, in the soil.

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Section: Introductionmentioning

confidence: 99%

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

et al. 2017

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“…Considering the existence of Na(I) and Fe shown by ICP results, the characteristic peaks at 2θ � 26.73 and 20.43°indicate the presence of sodium phosphate hydrate (Na 6 P 6 O 18 ·6H 2 O) and iron silicon carbide (Fe-Si-C). 2 , pyromorphite has a much lower solubility and a greater capacity to resist acid or alkaline attack [52,53]. In addition, the solubility of Zn 3 (PO 4 ) 2 ·4H 2 O or CaZn 2 (PO 4 ) 2 ·2H 2 O is much lower than zinc hydroxide (Zn(OH) 2 ), which is the main product involved in the immobilization of Zn(II) with Portland cement [54].…”

Section: Characterization Of the Materialsmentioning

confidence: 99%

Evaluation of Carbonation Effects on Cement-Solidified Contaminated Soil Used in Road Subgrade

Zhou

Pan

Tang

et al. 2018

Advances in Materials Science and Engineering

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Cement solidification/stabilization is widely used towards contaminated soil since it has a low price and significant improvement for the structural capacity of soil. To increase the usage of the solidified matrix, cement-solidified contaminated soil was used as road subgrade material. In this study, carbonation effect that reflected the durability on strength characteristics of cementsolidified contaminated soil and the settlement of pavement were evaluated through experimental and numerical analysis, respectively. According to results, compressive strengths of specimens with 1% Pb(II) under carbonation and standard curing range from 0.44 MPa to 1.17 MPa and 0.14 MPa to 2.67 MPa, respectively. e relatively low strengths were attributed to immobilization of heavy metal, which consumed part of SiO 2 , Al 2 O 3 , and CaO components in the cement or kaolin and reduced the hydration and pozzolanic reaction materials. is phenomenon further decreased the strength of solidified soils. e carbonation depth of 1% Cu(II) or Zn(II) contaminated soils was 18 mm, which significantly increased with the increase of curing time and contamination concentration. Furthermore, the finite element calculation results showed that surface settlements decreased with the increase of modulus of subgrade and the distance away from the center. At the center, the pavement settlement was proportional to the level of traffic load.

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“…L'hydroxyapatite aussi appelé pentacalcium-hydroxy-orto-phosphate Ca 5 (PO 4 ) 3 (OH) est connu et utilisé comme biomatériau (SHARROCK et al, 2013). Sa principale caractéristique est sa capacité de rétention des métaux lourds (BOSTICK, 2003 ;CONCA & WRIGHT, 2006 ;OLIVA et al, 2011 ;MIGNARDI et al, 2012). Cette capacité a été étudiée en condition "batch" pour plusieurs ions, et les tests en colonne contenant du HAP pure ont été réalisés (OLIVA et al, 2011).…”

Section: Introductionunclassified

“…Le mécanisme de réaction d'immobilisation des métaux dépend de plusieurs conditions. Ces derniers peuvent être l'échange ionique, la complexation à la surface, la dissolution des HAP et la précipitation du métal-hydroxy-ortho-phosphate et la coprécipitation (substitution d'ion de calcium par un ion de métal pendant recristallisation), (MIGNARDI et al, 2012 Les phases minérales sont analysées par DRX. La figure 4 montre le diffractogramme du gel d'apatite.…”

Section: Introductionunclassified

L’étude du mécanisme de rétention des métaux lourds des mélanges de gel d’apatite : l’effet de séchage et de l’addition de l’époxy

Berczi¹,

Belhadj²,

Lafhaj³

2014

XIIIèmes JNGCGC, Dunkerque

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Résumé :Le gel d'apatite est un nouveau matériau développé à partir de déchets industriels d'une entreprise chimique. Il est caractérisé par un comportement thixotropique et une capacité de rétention des métaux lourds par échange ionique. Cette dernière caractéristique a permis son utilisation dans les barrières perméables réactives (BPR), un dispositif permettant la dépollution des eaux souterraines. Cette barrière est composée : -du gel d'apatite assurant l'échange ionique ; -du sable pour une perméabilité optimale ; -d'un liant organique, l'époxy assurant la tenue mécanique de la barrière. L'objectif de cette étude est d'étudier le mécanisme de rétention du cuivre par le gel d'apatite. Celui-ci est utilisé sous sa forme brute et séchée pour comparaison. L'effet du liant organique sur le mécanisme de rétention est également étudié. Le principe consiste à injecter l'eau cuivrée à travers une cellule contenant le mélange réactif. L'eau dépolluée est récupérée à la sortie de la cellule afin de déterminer le taux de rétention. Quatre différents mélanges sont étudiés. La composition de chaque mélange est analysée avant et après la rétention avec un diffractomètre à rayons X (DRX), un spectroscope de fluorescence X (FX), un microscope d'électronique à balayage (MEB) et des mesures de la surface spécifique et de la porosité. Mots-clés : Gel d'apatite, Métaux lourds, Barrière perméable réactive.

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Evaluation of the effectiveness of phosphate treatment for the remediation of mine waste soils contaminated with Cd, Cu, Pb, and Zn

Cited by 183 publications

References 41 publications

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

Evaluation of different amendments and foliar fertilizer for immobilization of heavy metals in contaminated soils

Evaluation of Carbonation Effects on Cement-Solidified Contaminated Soil Used in Road Subgrade

L’étude du mécanisme de rétention des métaux lourds des mélanges de gel d’apatite : l’effet de séchage et de l’addition de l’époxy

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