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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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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. |
format | Online Article Text |
id | pubmed-7277159 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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