Porous Pr(OH)3 nanowires as novel high-performance adsorbents for phosphate removal

J. Tang; J. Chen; W. Huang; D. Li; Y. Zhu; Y. Tong; Y. Zhang

doi:10.1016/j.cej.2014.04.091

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Porous Pr(OH)3 nanowires as novel high-performance adsorbents for phosphate removal

Journal article

Open access

Peer reviewed

Porous Pr(OH)3 nanowires as novel high-performance adsorbents for phosphate removal

J. Tang, J. Chen, W. Huang, D. Li, Y. Zhu, Y. Tong and Y. Zhang

Chemical Engineering Journal, Vol.252, pp.202-209

2014

DOI: https://doi.org/10.1016/j.cej.2014.04.091

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Abstract

Porous Pr(OH)3 nanowires (NWs), which were synthesized via an electrodeposition approach, were utilized in phosphate removal for the first time. Our prepared porous Pr(OH)3 NWs exhibited superior phosphate removal performances, due to their large surface area, unique porous structure, and abundant hydroxyl groups as active sites. Their phosphate adsorption equilibrium data were well described by utilizing the Langmuir isotherm model (R2≥0.996), with a maximum phosphate adsorption capacity of 128.96mgP/g at 25°C. The thermodynamic study showed that the phosphate adsorption of Pr(OH)3 NWs was a spontaneous and exothermic process. On the other hand, the phosphate adsorption kinetics was well described with the use of the pseudo-second-order model, suggesting the adsorption process be chemisorption. In the pH range of 3.0-10.0, the high adsorption capacities of Pr(OH)3 NWs were observed; whilst, the presence of Cl-, HCO3 -, or NO3 - did not dramatically affect the phosphate uptake. Our experimental results strongly suggest that the use of porous Pr(OH)3 NWs hold a great potential in achieving highly efficient phosphate removal in practical water treatment.

Details

Title: Porous Pr(OH)3 nanowires as novel high-performance adsorbents for phosphate removal
Authors/Creators: J. Tang (Author/Creator) - Jinan University
J. Chen (Author/Creator) - Jinan University
W. Huang (Author/Creator) - Jinan University
D. Li (Author/Creator) - Murdoch University
Y. Zhu (Author/Creator) - Jinan University
Y. Tong (Author/Creator) - Sun Yat-sen University
Y. Zhang (Author/Creator) - Jinan University
Publication Details: Chemical Engineering Journal, Vol.252, pp.202-209
Publisher: Elsevier
Identifiers: 991005540055707891
Copyright: © 2014 Elsevier B.V.
Murdoch Affiliation: School of Engineering and Information Technology
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.90 Water Treatment; 2.90.27 Adsorption
Web Of Science research areas: Engineering, Chemical; Engineering, Environmental
ESI research areas: Engineering