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Preparation of porous nano-calcium titanate microspheres and its adsorption behavior for heavy metal ion in water.
J Hazard Mater. 2011 Feb 28; 186(2-3):971-7.JH

Abstract

Using D311 resin as a template, porous nano-calcium titanate microspheres (PCTOM) were prepared by a citric acid complex sol-gel method and characterized by X-ray diffraction (XRD), SEM and FTIR. The method's adsorption capabilities for heavy metal ions such as lead, cadmium and zinc were studied and adsorption and elution conditions were investigated. Moreover, taking the cadmium ion as an example, the thermodynamics and kinetics of the adsorption were studied. The results show that the microspheres were porous and were made of perovskite nano-calcium titanate. The lead, cadmium and zinc ions studied could be quantitatively retained at a pH value range of 5-8. The adsorption capacities of PCTOM for lead, cadmium and zinc were found to be 141.8 mg g(-1), 18.0 mg g(-1) and 24.4 mg g(-1) respectively. The adsorption behavior followed a Langmuir adsorption isotherm and a pseudo-second-order kinetic model, where adsorption was an endothermic and spontaneous physical process. The adsorbed metal ions could be completely eluted using 2 mol L(-1) HNO(3) with preconcentration factors over 100 for all studied heavy metal ions. The method has also been applied to the preconcentration and FAAS determination of trace lead, cadmium and zinc ion in water samples with satisfactory results.

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Authors+Show Affiliations

Zhang D
School of Environmental and Chemical Engineering, Shenyang Ligong University, Shenyang 110159, PR China. sylgdxdong@sina.com
Zhang CL
No affiliation info available
Zhou P
No affiliation info available

MeSH

AdsorptionAlgorithmsCadmiumCalcium CompoundsHydrogen-Ion ConcentrationIndicators and ReagentsKineticsLeadMetals, HeavyMicroscopy, Electron, ScanningMicrospheresModels, StatisticalOxidesParticle SizePorositySolutionsSpectrophotometry, AtomicSpectroscopy, Fourier Transform InfraredThermodynamicsTitaniumWaterX-Ray DiffractionZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21177018

Citation

Zhang, Dong, et al. "Preparation of Porous Nano-calcium Titanate Microspheres and Its Adsorption Behavior for Heavy Metal Ion in Water." Journal of Hazardous Materials, vol. 186, no. 2-3, 2011, pp. 971-7.
Zhang D, Zhang CL, Zhou P. Preparation of porous nano-calcium titanate microspheres and its adsorption behavior for heavy metal ion in water. J Hazard Mater. 2011;186(2-3):971-7.
Zhang, D., Zhang, C. L., & Zhou, P. (2011). Preparation of porous nano-calcium titanate microspheres and its adsorption behavior for heavy metal ion in water. Journal of Hazardous Materials, 186(2-3), 971-7. https://doi.org/10.1016/j.jhazmat.2010.11.096
Zhang D, Zhang CL, Zhou P. Preparation of Porous Nano-calcium Titanate Microspheres and Its Adsorption Behavior for Heavy Metal Ion in Water. J Hazard Mater. 2011 Feb 28;186(2-3):971-7. PubMed PMID: 21177018.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Preparation of porous nano-calcium titanate microspheres and its adsorption behavior for heavy metal ion in water. AU - Zhang,Dong, AU - Zhang,Chun-li, AU - Zhou,Pin, Y1 - 2010/12/01/ PY - 2010/07/25/received PY - 2010/11/08/revised PY - 2010/11/23/accepted PY - 2010/12/24/entrez PY - 2010/12/24/pubmed PY - 2011/6/7/medline SP - 971 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 186 IS - 2-3 N2 - Using D311 resin as a template, porous nano-calcium titanate microspheres (PCTOM) were prepared by a citric acid complex sol-gel method and characterized by X-ray diffraction (XRD), SEM and FTIR. The method's adsorption capabilities for heavy metal ions such as lead, cadmium and zinc were studied and adsorption and elution conditions were investigated. Moreover, taking the cadmium ion as an example, the thermodynamics and kinetics of the adsorption were studied. The results show that the microspheres were porous and were made of perovskite nano-calcium titanate. The lead, cadmium and zinc ions studied could be quantitatively retained at a pH value range of 5-8. The adsorption capacities of PCTOM for lead, cadmium and zinc were found to be 141.8 mg g(-1), 18.0 mg g(-1) and 24.4 mg g(-1) respectively. The adsorption behavior followed a Langmuir adsorption isotherm and a pseudo-second-order kinetic model, where adsorption was an endothermic and spontaneous physical process. The adsorbed metal ions could be completely eluted using 2 mol L(-1) HNO(3) with preconcentration factors over 100 for all studied heavy metal ions. The method has also been applied to the preconcentration and FAAS determination of trace lead, cadmium and zinc ion in water samples with satisfactory results. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/21177018/Preparation_of_porous_nano_calcium_titanate_microspheres_and_its_adsorption_behavior_for_heavy_metal_ion_in_water_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)01522-0 DB - PRIME DP - Unbound Medicine ER -