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


Autoria(s): Reynel-Avila, Hilda E.; Mendoza-Castillo, Didilia I.; Bonilla-Petriciolet, Adrian; Silvestre-Albero, Joaquín
Contribuinte(s)

Universidad de Alicante. Departamento de Química Inorgánica

Universidad de Alicante. Instituto Universitario de Materiales

Materiales Avanzados

Data(s)

13/09/2016

13/09/2016

01/09/2015

Resumo

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.

Identificador

Journal of Molecular Liquids. 2015, 209: 187-195. doi:10.1016/j.molliq.2015.05.013

0167-7322 (Print)

1873-3166 (Online)

http://hdl.handle.net/10045/57844

10.1016/j.molliq.2015.05.013

Idioma(s)

eng

Publicador

Elsevier

Relação

http://dx.doi.org/10.1016/j.molliq.2015.05.013

Direitos

© 2015 Elsevier B.V.

info:eu-repo/semantics/restrictedAccess

Palavras-Chave #Adsorption #Bone char #Fixed-bed columns #Naproxen #Pharmaceuticals #Water treatment #Química Inorgánica
Tipo

info:eu-repo/semantics/article