Removal of lead from aqueous solution by hydroxyapatite/magnetite composite adsorbent

Dong, Lu; Zhu, Zhiliang; Qiu, Yanling; Zhao, Jianfu

doi:10.1016/j.cej.2010.10.027

Cited by 214 publications

(88 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because of the relative scarcity of dynamic assays, this comparison has been extended to batch systems. Even for a given material, the removed pollutant amounts in batch mode are generally more important than those obtained in dynamic mode (Dong et al 2010) and the removed lead amount by BGMW in CSTR mode is much higher than the related ones determined for a Mexican soil (MartinezVillegas et al 2004), a Thai Kaolinite (Chantawong et al 2003), an Iranian dolomite (Irani et al 2011) and a Turkish illite clay (Ozdes et al 2011). …”

Section: Effect Of Influent Lead Concentrationmentioning

confidence: 99%

“…Furthermore, for higher initial aqueous concentrations, the contact probability between lead ions contained in the aqueous phase and the BGMW might be more privileged. Moreover, even at a fixed aqueous pH value, the precipitation of lead as Pb(OH) 2 or PbCO 3 should be favored with raising the initial aqueous concentrations since their solubility product were estimated to 1.2 9 10 -15 and 7.4 9 10 -14 , respectively (Dong et al 2010;McQuarrie et al 2000).…”

Section: Effect Of Influent Lead Concentrationmentioning

confidence: 99%

See 1 more Smart Citation

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Mlayah

Jellali

2014

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Lead removal from synthetic solutions and real wastewater by Bianco Gioia marble wastes as abundant, renewable and eco-friendly materials was studied under different experimental conditions in a continuous stirring tank reactor. These marble wastes were found to be very efficient in removing lead for several experimental situations. Indeed, for initial aqueous pH values higher than 3.6, a lead removal efficiency of about 100 % was achieved even for high aqueous concentrations (200 mg L -1 ), important feeding flow rates (60 mL min -1 ) and low marble waste dosage (2 g L -1 ). The best removal capacity (175.7 mg g -1 ) was obtained for an initial lead concentration of 200 mg L -1 , a marble waste dose of 5 g L -1 and an aqueous pH of 5. Even using the real wastewater with low aqueous pH (1.1), lead was also completely removed using 20 g L -1 of the tested marble wastes. According to the energy-dispersive spectroscopy and X-ray diffraction analyses, lead removal seems to be controlled by both precipitation as cerussite (PbCO 3 ) and hydrocerussite (Pb 3 (CO 3 ) 2 (OH) 2 ), and adsorption onto the surface particles through cation exchange and complexation. The proposed low-cost material efficiently removes lead present in synthetic solutions and real wastewaters and constitutes an interesting environmental management option.

show abstract

Section: Effect Of Influent Lead Concentrationmentioning

confidence: 99%

Section: Effect Of Influent Lead Concentrationmentioning

confidence: 99%

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Mlayah

Jellali

2014

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…In the field of water remediation, calcium phosphates and carbons represent two important classes of materials with high affinity for inorganic and organic contaminants, respectively [14,15]. HAp and carbon nanoparticles have already been previously individually associated with iron and iron oxide colloids for remediation [16][17][18][19]. However, to our knowledge, the corresponding triphasic system organized within a single composite structure has never been described so far.…”

Section: Introductionmentioning

confidence: 91%

Hierarchically-organized, well-dispersed hydroxyapatite-coated magnetic carbon with combined organics and inorganics removal properties

Yang

Liu

Masse

et al. 2015

Chemical Engineering Journal

View full text Add to dashboard Cite

Novel hierarchically-organized magnetic microspheres have been successfully developed that consist of an aqueous hollow core, a magnetic porous Fe 3 O 4 -carbon layer and a well-define hydroxyapatite (HAp) shell. The hollow magnetic carbon microspheres were prepared by ultrasonic spray pyrolysis and coated with HAp using a biomimetic approach. The resulting powders exhibit micro-and meso-porosity. The removal capacity of the composite spheres towards an antibiotic (ampicilin), a rare-earth ion (La 3+ ) and two heavy metals (Hg 2+ and Pb 2+ ) has been studied and compared with that of the individual components. The dual organic-inorganic affinity of the magnetic HAp/carbon conjugates was demonstrated, with synergetic effects being evidenced for heavy metal removal enlightening their potentialities in wastewater treatment.

show abstract

“…A number of synthetic methodologies have been described over the last few years (Ansar et al 2012;Mir et al 2010;Muzquiz-Ramos et al 2010;Singh et al 2012;Wakiya et al 2010). However, only two recent reports are related to remediation methods, taking advantage either of photocatalytic activities of the materials for organic degradation (Yang et al 2010) or of the apatite affinity for lead ions (Dong et al 2010). However, none of these studies demonstrate the benefits of iron oxide incorporation in the material recovery after the remediation process.…”

Section: Introductionmentioning

confidence: 99%

“…In this context, magnetic apatites obtained by association of iron oxide phases with hydroxyapatite have recently attracted attention, because they could offer the possibility for an easy and efficient recovery of the sorbent phase after treatment of contaminated waters (Dong et al 2010). Hydroxyapatite Ca 10 (PO 4 ) 6 (OH) 2 has long been considered as one of the most promising mineral phases for remediation of polluted waters and soils (Ma et al 1993;Nzihou and Sharrock 2010).…”

Section: Introductionmentioning

confidence: 99%

Magnetically recoverable iron oxide–hydroxyapatite nanocomposites for lead removal

Yang

Masse

Rouelle

et al. 2014

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Magnetite-hydroxyapatite nanocomposites were prepared by in situ precipitation of the calcium phosphate phase in an iron oxide colloidal suspension. Homogeneous magnetic powders were obtained with iron oxide content up to 50 wt%, without perturbation of the magnetite structure nor formation of additional calcium phosphates. The surface area of the composite powder was significantly increased after incorporation of magnetite due to the better apatite particle dispersion. This results in an increased available reactive surface, favoring lead sorption and hydroxypyromorphite precipitation, both leading to an enhanced lead removal capacity of the composite materials. The magnetic properties of magnetite nanocrystals were preserved upon association with hydroxyapatite. Full recovery of the composite powder after lead removal could be achieved using a simple magnet at a relatively low iron oxide content (20 wt%). This indicates a strong interaction between hydroxyapatite and magnetite particles within the composite powder. The procedure is simple, easily scalable and involves only environmental friendly materials.

show abstract

Removal of lead from aqueous solution by hydroxyapatite/magnetite composite adsorbent

Cited by 214 publications

References 44 publications

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Study of continuous lead removal from aqueous solutions by marble wastes: efficiencies and mechanisms

Hierarchically-organized, well-dispersed hydroxyapatite-coated magnetic carbon with combined organics and inorganics removal properties

Magnetically recoverable iron oxide–hydroxyapatite nanocomposites for lead removal

Contact Info

Product

Resources

About