Copper and zinc decontamination from single- and binary-metal solutions using hydroxyapatite

Corami, Alessia; Mignardi, Silvano; Ferrini, Vincenzo

doi:10.1016/j.jhazmat.2006.12.003

Cited by 192 publications

(92 citation statements)

References 40 publications

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“…8,9 In the previous paper, 10 we reported that reaction of heavy metal ions such as Pb 2+ 6 (OH) 2 , HAP-300 (Ca/P=1.68, slightly containing CO 3 ), and Ca-deficient hydroxyapatite Ca 10-x (HPO 4 ) x (PO 4 ) 6-x (OH) 2-x , HAP-400 (Ca/P=1.38), afforded the corresponding metal-treated hydroxyapatites. Particularly, complete inclusion of heavy metal ions along with stoichiometric elution of Ca 2+ were recognized in the following combinations, Fe 3+ versus HAP-300, Fe 3+ versus HAP-400, and Pb 2+ versus HAP-400.…”

Section: Introductionmentioning

confidence: 98%

“…Hydroxyapatite indicates a unique property, exchange of Ca 2+ and OH -for outer cations [1][2][3][4][5][6][7] and anions. 8,9 In the previous paper, 10 we reported that reaction of heavy metal ions such as Pb 2+ 6 (OH) 2 , HAP-300 (Ca/P=1.68, slightly containing CO 3 ), and Ca-deficient hydroxyapatite Ca 10-x (HPO 4 ) x (PO 4 ) 6-x (OH) 2-x , HAP-400 (Ca/P=1.38), afforded the corresponding metal-treated hydroxyapatites.…”

Section: Introductionmentioning

confidence: 99%

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ADSORBABILITY OF ALIZARIN RED S ON Fe(III)- AND Pb(II)-TREATED HYDROXYAPATITES IN WATER

Moriguchi

Nakagawa

Kaji

2010

Phosphorus Research Bulletin

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We studied on adsorbability of alizarin red S (ARS) on Fe(III)-and Pb(II)-treated hydroxyapatites in distilled water (H 2 O) and phosphate buffer solution (PBS). The Fe(III)-treated apatites indicated high adsorption capacity from their isothermic curves both in H 2 O and PBS: The capacities in PBS were larger than those in H 2 O. On the other hand, adsorption capacities of Pb(II)-treated apatites in PBS were much lower than those in H 2 O. Surface analysis of those treated apatites by electron probe micro analysis and FT-IR microspectroscopy affords significant information on surface element (P, Ca, Fe, or Pb) distribution and interaction patterns between ARS and the corresponding metal (Fe or Pb) sites. Eventually, predominant adsorption mechanisms were elucidated as follows, chelate form adsorption for Fe(III)-treated apatites and salt form adsorption for Pb(II)-treated apatites.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

ADSORBABILITY OF ALIZARIN RED S ON Fe(III)- AND Pb(II)-TREATED HYDROXYAPATITES IN WATER

Moriguchi

Nakagawa

Kaji

2010

Phosphorus Research Bulletin

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“…Stoichiometric hydroxyapatite, Ca 10 (PO 4 ) 6 (OH) 2 , has substitution ability with cations such as sodium 1,2 and heavy metal [3][4][5][6][7][8][9] ions as well as anions such as sulfonate 1,2 and halogen 10,11 ions. It is supposed that Ca-deficient hydroxyapatite, 12 denoted as Ca 10-x (HPO 4 ) x (PO 4 ) 6-x (OH) 2-x , exhibits ion substitution ability different from stoichiometric hydroxyapatite since Ca-deficient apatite has a crystal structure with many Ca-deficient sites.…”

Section: Introductionmentioning

confidence: 99%

REACTION OF Ca-DEFICIENT HYDROXYAPATITE WITH HEAVY METAL IONS ALONG WITH METAL SUBSTITUTION

Moriguchi

Nakagawa

Kaji

2008

Phosphorus Research Bulletin

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Reaction of Ca-deficient hydroxyapatite, HAP-400, with heavy metals, Pb (II), Fe (III), Fe (II), Cu (II), Cd (II), Cr (II), Co (II), Ni (II), and Zn (II) was investigated at 25˚C for 4 h in water, compared with stoichiometric hydroxyapatite HAP-300. From heavy metal consumption and [Ca]/[Metal], which is defined by molar ratio of eluted Ca and consumed heavy metal, the reactions of HAP-400 with the heavy metals except for Pb (II) and Fe (III) proceed via metal-adsorptive substitution mechanism. In the reactions of HAP-400 with Pb (II) and Fe (III), the metals were completely consumed with equivalent elution of Ca, but these reactions proceeded by no simple substitution mechanism to afford Pb (II)-and Fe (III)-bearing HAP-400 with specific structures, namely HAP-400-Pb and HAP-400-Fe.By XRD and FT-IR microspectroscopy, it was found that HAP-400-Pb is constituted of both newly formed lead apatite crystal and the original apatite crystal, and that HAP-400-Fe is constituted of much amorphous FePO 4 phase around the original apatic phase. Therefore, it was concluded that the reactions of HAP-400 with Pb (II) and Fe (III) proceed by the following mechanism: erosion of the apatic structure and formation of a brand-new structure containing metal. This mechanism can be named apatite-erosive substitution mechanism.

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“…The effectiveness of P amendments decreases in multielement contaminated soils. The competitive metal sorption was observed to reduce the binding capacity of hydroxyapatite, as example, Pb, Cu and Zn when simultaneously present in soil solution (Corami et al, 2007;Cao et al, 2004).…”

Section: Lead Concentration In O Stamineusmentioning

confidence: 99%

In-situ immobilization of lead using different source of phosphate amendments for the organic production of misai kucing (Orthosiphon stamineus)

Mulana¹,

Ishak²,

Bakar³

2017

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Copper and zinc decontamination from single- and binary-metal solutions using hydroxyapatite

Cited by 192 publications

References 40 publications

ADSORBABILITY OF ALIZARIN RED S ON Fe(III)- AND Pb(II)-TREATED HYDROXYAPATITES IN WATER

ADSORBABILITY OF ALIZARIN RED S ON Fe(III)- AND Pb(II)-TREATED HYDROXYAPATITES IN WATER

REACTION OF Ca-DEFICIENT HYDROXYAPATITE WITH HEAVY METAL IONS ALONG WITH METAL SUBSTITUTION

In-situ immobilization of lead using different source of phosphate amendments for the organic production of misai kucing (Orthosiphon stamineus)

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