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Adsorption of Pb(II) and Cd(II) from aqueous solutions using titanate nanotubes prepared via hydrothermal method.
J Hazard Mater. 2011 May 30; 189(3):741-8.JH

Abstract

Titanate nanotubes (TNs) with specific surface areas of 272.31 m(2)g(-1) and pore volumes of 1.264 cm(3)g(-1) were synthesized by alkaline hydrothermal method. The TNs were investigated as adsorbents for the removal of Pb(II) and Cd(II) from aqueous solutions. The FT-IR analysis indicated that Pb(II) and Cd(II) adsorption were mainly ascribed to the hydroxyl groups in the TNs. Batch experiments were conducted by varying contact time, pH and adsorbent dosage. It was shown that the initial uptake of each metal ion was very fast in the first 5 min, and adsorption equilibrium was reached after 180 min. The adsorption of Pb(II) and Cd(II) were found to be maximum at pH in the range of 5.0-6.0. The adsorption kinetics of both metal ions followed the pseudo-second-order model. Equilibrium data were best fitted with the Langmuir isotherm model, and the maximum adsorption capacities of Pb(II) and Cd(II) were determined to be 520.83 and 238.61 mg g(-1), respectively. Moreover, more than 80% of Pb(II) and 85% of Cd(II) adsorbed onto TNs can be desorbed with 0.1M HCl after 3h. Thus, TNs were considered to be effective and promising materials for the removal of both Pb(II) and Cd(II) from wastewater.

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Authors+Show Affiliations

Xiong L
Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing 100871, China.
Chen C
No affiliation info available
Chen Q
No affiliation info available
Ni J
No affiliation info available

MeSH

AdsorptionCadmiumHydrogen-Ion ConcentrationIonsKineticsLeadMetalsNanotubesSpectroscopy, Fourier Transform InfraredTitaniumWater PollutantsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21466911

Citation

Xiong, Lin, et al. "Adsorption of Pb(II) and Cd(II) From Aqueous Solutions Using Titanate Nanotubes Prepared Via Hydrothermal Method." Journal of Hazardous Materials, vol. 189, no. 3, 2011, pp. 741-8.
Xiong L, Chen C, Chen Q, et al. Adsorption of Pb(II) and Cd(II) from aqueous solutions using titanate nanotubes prepared via hydrothermal method. J Hazard Mater. 2011;189(3):741-8.
Xiong, L., Chen, C., Chen, Q., & Ni, J. (2011). Adsorption of Pb(II) and Cd(II) from aqueous solutions using titanate nanotubes prepared via hydrothermal method. Journal of Hazardous Materials, 189(3), 741-8. https://doi.org/10.1016/j.jhazmat.2011.03.006
Xiong L, et al. Adsorption of Pb(II) and Cd(II) From Aqueous Solutions Using Titanate Nanotubes Prepared Via Hydrothermal Method. J Hazard Mater. 2011 May 30;189(3):741-8. PubMed PMID: 21466911.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption of Pb(II) and Cd(II) from aqueous solutions using titanate nanotubes prepared via hydrothermal method. AU - Xiong,Lin, AU - Chen,Cheng, AU - Chen,Qing, AU - Ni,Jinren, Y1 - 2011/03/09/ PY - 2010/10/17/received PY - 2011/02/28/revised PY - 2011/03/03/accepted PY - 2011/4/7/entrez PY - 2011/4/7/pubmed PY - 2011/10/4/medline SP - 741 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 189 IS - 3 N2 - Titanate nanotubes (TNs) with specific surface areas of 272.31 m(2)g(-1) and pore volumes of 1.264 cm(3)g(-1) were synthesized by alkaline hydrothermal method. The TNs were investigated as adsorbents for the removal of Pb(II) and Cd(II) from aqueous solutions. The FT-IR analysis indicated that Pb(II) and Cd(II) adsorption were mainly ascribed to the hydroxyl groups in the TNs. Batch experiments were conducted by varying contact time, pH and adsorbent dosage. It was shown that the initial uptake of each metal ion was very fast in the first 5 min, and adsorption equilibrium was reached after 180 min. The adsorption of Pb(II) and Cd(II) were found to be maximum at pH in the range of 5.0-6.0. The adsorption kinetics of both metal ions followed the pseudo-second-order model. Equilibrium data were best fitted with the Langmuir isotherm model, and the maximum adsorption capacities of Pb(II) and Cd(II) were determined to be 520.83 and 238.61 mg g(-1), respectively. Moreover, more than 80% of Pb(II) and 85% of Cd(II) adsorbed onto TNs can be desorbed with 0.1M HCl after 3h. Thus, TNs were considered to be effective and promising materials for the removal of both Pb(II) and Cd(II) from wastewater. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/21466911/Adsorption_of_Pb_II__and_Cd_II__from_aqueous_solutions_using_titanate_nanotubes_prepared_via_hydrothermal_method_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(11)00309-8 DB - PRIME DP - Unbound Medicine ER -