Metal Ion Binding on Hydroxyapatite (Hap) and Study of the Velocity of Sedimentation

Kadouche, Slimane; Zemmouri, Hassiba; Benaoumeur, Kacem; Drouiche, Nadjib; Sharrock, Patrick; Lounici, H.

doi:10.1016/j.proeng.2012.01.1217

Cited by 23 publications

(6 citation statements)

References 7 publications

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“…Unsurprisingly, the possibility of such contamination is related to the chemical composition of the sediment and groundwater surrounding the skeletal material [97]. With regard to Cu, its adsorption in hydroxyapatite powder from finely ground bone has been found to be rapid [98]. Because of the small grain size, such experimental work is not directly applicable to skeletal material, especially intact cortical bone.…”

Section: Copper From Diagenesismentioning

confidence: 99%

Copper exposure in medieval and post-medieval Denmark and northern Germany: its relationship to residence location and social position

et al. 2020

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For medieval and post-medieval Denmark and northern Germany, trace elements can potentially contribute to our understanding of diet, migration, social status, exposure to urban settings, and disease treatment. Copper, of particular interest as a marker of access to everyday metal items, can be used to clarify socioeconomic distinctions between and within communities. Postmortem alteration of bone (diagenesis), however, must be ruled out before the elements can be used to characterize life in the past. Femoral cortical bone samples of ca. 40 mg were thoroughly decontaminated, and the concentrations of Al, Ca, Mn, Fe, Cu, As, Sr, Ba, and Pb were measured using inductively coupled plasma mass spectrometry. The concentrations of these elements were quantified in bone samples from 553 skeletons from 9 rural and urban cemeteries, and 34 soil samples obtained near three burials. Copper, the primary element of interest in this work, is generally absent from the femoral cortical bone of rural people, although it occurs in high concentrations in the skeletons of the inhabitants of towns. The Cu in medieval to post-medieval bones likely originated from everyday objects, notably kitchen utensils. A rural to urban distinction in Cu concentrations, found repeatedly at two sites, likely resulted from differential access to much-desired, although still utilitarian, household items. An uneven distribution of metal objects used in domestic contexts, demonstrated through bone chemistry, was greater between rural and urban communities than it was within urban centres, at least among the socioeconomic positions sampled in this study.

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Section: Copper From Diagenesismentioning

confidence: 99%

Copper exposure in medieval and post-medieval Denmark and northern Germany: its relationship to residence location and social position

et al. 2020

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“…In the case of HAp, the mechanism for removing heavy metals has a dual nature [96,113,114] that involves (i) dissolution-precipitation (releasing Ca and binding metals from the solution through the ion exchange process) and (ii) surface complexation that leads to the formation of chemical bonds between the adsorbent and adsorbate. Depending on the research conditions, the authors reported the predominance of dissolutionprecipitation [94] or chemisorption [78]. The removal of Cu(II) on CFA-HAp1-4 was extended by a desorption test carried out in an acidic environment (pH 2).…”

Section: Cu(ii) and Rb Adsorption Equilibriummentioning

confidence: 99%

Characterization of the Physical, Chemical, and Adsorption Properties of Coal-Fly-Ash–Hydroxyapatite Composites

et al. 2021

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(1) Hydroxyapatite (Hap), which can be obtained by several methods, is known to be a good adsorbent. Coal fly ash (CFA) is a commonly reused byproduct also used in environmental applications as an adsorbent. We sought to answer the following question: Can CFA be included in the method of Hap wet synthesis to produce a composite capable of adsorbing both heavy metals and dyes? (2) High calcium lignite CFA from the thermal power plant in Bełchatów (Poland) was used as the base to prepare CFA–Hap composites. Four types designated CFA–Hap1–4 were synthesized via the wet method of in situ precipitation. The synthesis conditions differed in terms of the calcium reactants used, pH, and temperature. We also investigated the equilibrium adsorption of Cu(II) and rhodamine B (RB) on CFA–Hap1–4. The data were fitted using the Langmuir, Freundlich, and Redlich–Peterson models and validated using R2 and χ2/DoF. Surface changes in CFA–Hap2 following Cu(II) and RB adsorption were assessed using SEM, SE, and FT-IR analysis. (3) The obtained composites contained hydroxyapatite (Ca/P 1.67) and aluminosilicates. The mode of Cu(II) and RB adsorption could be explained by the Redlich–Peterson model. The CFA–Hap2 obtained using CFA, Ca(NO3)2, and (NH4)2HPO4 at RT and pH 11 exhibited the highest maximal adsorption capacity: 73.6 mg Cu/g and 87.0 mg RB/g. (4) The clear advantage of chemisorption over physisorption was indicated by the Cu(II)–CFA–Hap system. The RB molecules present in the form of uncharged lactone were favorably adsorbed even on strongly deprotonated CFA–Hap surfaces.

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“…According to the literature, because the surface of HAP is negatively charged in this range, the most appropriate pH range for Cd 2+ adsorption is above pH pzc (surface charge of HAP is zero). The pH can impact efficient ion exchange adsorption between cationic species and the Ca 2+ in HAP [67,68]. In contrast, HAP has a high adsorption capacity at pH 4, 5, 6, and 7 for Pb, which suggests that Pb ion adsorption in wastewater would be efficient (Figure 5d).…”

Section: Metal Cation Removal Efficiecny Of Hap Catalystmentioning

confidence: 99%

Removal of Various Hazardous Materials Using a Multifunctional Biomass-Derived Hydroxyapatite (HAP) Catalyst and Its Antibacterial Effects

Jang

Park

Song

et al. 2021

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In the present study, oyster shells, a cause of environmental pollution, were employed effectively to synthesize hydroxyapatite (HAP) by facile oxidation and phosphorylation. The ability of HAP to adsorb various metal cations and inhibit bacterial growth was validated. The biomass-derived HAP catalyst exhibited high metal cation adsorption in water at room temperature and under various acidic conditions (M = Cr, Mn, Ni, Cu, Cd, Ba, and Pb). HAP was demonstrated to have a maximum removal efficiency of 92.8% for the heavy metal Pb. Even under different pH conditions, HAP was demonstrated to be effective for the removal of three harmful heavy metals, Cr, Cd, and Pb, with a particularly high removal efficiency demonstrated for Pb under all conditions (average removal efficiency of Cr: 63.0%, Cd: 59.9%, and Pb: 91.6%). In addition, HAP had a significant influence on phosphate ion adsorption in aqueous solution, eliminating 98.1% after 3 min. Furthermore, biomass-derived HAP was demonstrated to have significant antibacterial activity against E. coli and S. aureus (5 mM: 74% and 78.1%, 10 mM: 89.6% and 96.0%, respectively).

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Metal Ion Binding on Hydroxyapatite (Hap) and Study of the Velocity of Sedimentation

Cited by 23 publications

References 7 publications

Copper exposure in medieval and post-medieval Denmark and northern Germany: its relationship to residence location and social position

Copper exposure in medieval and post-medieval Denmark and northern Germany: its relationship to residence location and social position

Characterization of the Physical, Chemical, and Adsorption Properties of Coal-Fly-Ash–Hydroxyapatite Composites

Removal of Various Hazardous Materials Using a Multifunctional Biomass-Derived Hydroxyapatite (HAP) Catalyst and Its Antibacterial Effects

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