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Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples

In view of the valorisation of the green microalga Scenedesmus obliquus biomass, it was used for the biosorption of two nonsteroidal anti-inflammatory drugs, namely salicylic acid and ibuprofen, from water. Microalgae biomass was characterized, namely by the determination of the point of zero charge...

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Autores principales: Silva, Andreia, Coimbra, Ricardo N., Escapa, Carla, Figueiredo, Sónia A., Freitas, Olga M., Otero, Marta
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7277159/
https://www.ncbi.nlm.nih.gov/pubmed/32466088
http://dx.doi.org/10.3390/ijerph17103707
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author Silva, Andreia
Coimbra, Ricardo N.
Escapa, Carla
Figueiredo, Sónia A.
Freitas, Olga M.
Otero, Marta
author_facet Silva, Andreia
Coimbra, Ricardo N.
Escapa, Carla
Figueiredo, Sónia A.
Freitas, Olga M.
Otero, Marta
author_sort Silva, Andreia
collection PubMed
description In view of the valorisation of the green microalga Scenedesmus obliquus biomass, it was used for the biosorption of two nonsteroidal anti-inflammatory drugs, namely salicylic acid and ibuprofen, from water. Microalgae biomass was characterized, namely by the determination of the point of zero charge (pH(PZC)), by Fourier transform infrared (FT-IR) analysis, simultaneous thermal analysis (STA) and scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS). Kinetic and equilibrium batch experiments were carried out and results were found to fit the pseudo-second order equation and the Langmuir isotherm model, respectively. The Langmuir maximum capacity determined for salicylic acid (63 mg g(−1)) was larger than for ibuprofen (12 mg g(−1)), which was also verified for a commercial activated carbon used as reference (with capacities of 250 and 147 mg g(−1), respectively). For both pharmaceuticals, the determination of thermodynamic parameters allowed us to infer that adsorption onto microalgae biomass was spontaneous, favourable and exothermic. Furthermore, based on the biomass characterization after adsorption and energy associated with the process, it was deduced that the removal of salicylic acid and ibuprofen by Scenedesmus obliquus biomass occurred by physical interaction.
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spelling pubmed-72771592020-06-15 Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples Silva, Andreia Coimbra, Ricardo N. Escapa, Carla Figueiredo, Sónia A. Freitas, Olga M. Otero, Marta Int J Environ Res Public Health Article In view of the valorisation of the green microalga Scenedesmus obliquus biomass, it was used for the biosorption of two nonsteroidal anti-inflammatory drugs, namely salicylic acid and ibuprofen, from water. Microalgae biomass was characterized, namely by the determination of the point of zero charge (pH(PZC)), by Fourier transform infrared (FT-IR) analysis, simultaneous thermal analysis (STA) and scanning electron microscopy with energy dispersive spectroscopy (SEM/EDS). Kinetic and equilibrium batch experiments were carried out and results were found to fit the pseudo-second order equation and the Langmuir isotherm model, respectively. The Langmuir maximum capacity determined for salicylic acid (63 mg g(−1)) was larger than for ibuprofen (12 mg g(−1)), which was also verified for a commercial activated carbon used as reference (with capacities of 250 and 147 mg g(−1), respectively). For both pharmaceuticals, the determination of thermodynamic parameters allowed us to infer that adsorption onto microalgae biomass was spontaneous, favourable and exothermic. Furthermore, based on the biomass characterization after adsorption and energy associated with the process, it was deduced that the removal of salicylic acid and ibuprofen by Scenedesmus obliquus biomass occurred by physical interaction. MDPI 2020-05-25 2020-05 /pmc/articles/PMC7277159/ /pubmed/32466088 http://dx.doi.org/10.3390/ijerph17103707 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Silva, Andreia
Coimbra, Ricardo N.
Escapa, Carla
Figueiredo, Sónia A.
Freitas, Olga M.
Otero, Marta
Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title_full Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title_fullStr Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title_full_unstemmed Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title_short Green Microalgae Scenedesmus Obliquus Utilization for the Adsorptive Removal of Nonsteroidal Anti-Inflammatory Drugs (NSAIDs) from Water Samples
title_sort green microalgae scenedesmus obliquus utilization for the adsorptive removal of nonsteroidal anti-inflammatory drugs (nsaids) from water samples
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7277159/
https://www.ncbi.nlm.nih.gov/pubmed/32466088
http://dx.doi.org/10.3390/ijerph17103707
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