Assessment of naproxen adsorption on bone char in aqueous solutions using batch and fixed-bed processes

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Title: Assessment of naproxen adsorption on bone char in aqueous solutions using batch and fixed-bed processes
Authors: Reynel-Avila, Hilda E. | Mendoza-Castillo, Didilia I. | Bonilla-Petriciolet, Adrian | Silvestre-Albero, Joaquín
Research Group/s: Materiales Avanzados
Center, Department or Service: Universidad de Alicante. Departamento de Química Inorgánica | Universidad de Alicante. Instituto Universitario de Materiales
Keywords: Adsorption | Bone char | Fixed-bed columns | Naproxen | Pharmaceuticals | Water treatment
Knowledge Area: Química Inorgánica
Issue Date: Sep-2015
Publisher: Elsevier
Citation: Journal of Molecular Liquids. 2015, 209: 187-195. doi:10.1016/j.molliq.2015.05.013
Abstract: An integrated analysis of naproxen adsorption on bone char in batch and packed-bed column conditions has been performed. Kinetic, thermodynamic and breakthrough parameters have been calculated using adsorption models and artificial neural networks. Results show that naproxen removal using bone char in batch conditions is a feasible and effective process, which could involve electrostatic and non-electrostatic interactions depending mainly on pH conditions. However, the application of packed-bed column for naproxen adsorption on bone char is not effective for the treatment of diluted solutions due to the low degree of adsorbent utilization (below 4%) at tested operating conditions. The proposed mechanism for naproxen removal using bone char could include a complexation process via phosphate and naproxen, hydrogen bonding and the possibility of hydrophobic interactions via π–π electron. This study highlights the relevance of performing an integrated analysis of adsorbent effectiveness in batch and dynamic conditions to establish the best process configuration for the removal of emerging water pollutants such as pharmaceuticals.
ISSN: 0167-7322 (Print) | 1873-3166 (Online)
DOI: 10.1016/j.molliq.2015.05.013
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2015 Elsevier B.V.
Peer Review: si
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Appears in Collections:INV - LMA - Artículos de Revistas

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