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Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics
Diazepam has been detected in water sources around the world affecting the quality of drinking water. Even in small quantities, recent studies have proven the negative effects of the drug on human body. Since traditional water and sewage treatment do not remove this type of contaminant, it became in...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Springer Berlin Heidelberg
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8593643/ https://www.ncbi.nlm.nih.gov/pubmed/34783951 http://dx.doi.org/10.1007/s11356-021-17452-z |
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author | Coslop, Thaísa Frossard Nippes, Ramiro Picoli Bergamasco, Rosangela Scaliante, Mara Heloisa Neves Olsen |
author_facet | Coslop, Thaísa Frossard Nippes, Ramiro Picoli Bergamasco, Rosangela Scaliante, Mara Heloisa Neves Olsen |
author_sort | Coslop, Thaísa Frossard |
collection | PubMed |
description | Diazepam has been detected in water sources around the world affecting the quality of drinking water. Even in small quantities, recent studies have proven the negative effects of the drug on human body. Since traditional water and sewage treatment do not remove this type of contaminant, it became interesting to evaluate forms to remove them from water sources. A cheap and eco-friendly alternative to remove this drug from the water is through adsorption using the natural clinoptilolite zeolite as an adsorbent. This work goal was to study the characterizations of clinoptilolite, such as scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometer (XRD), and Fourier transform infrared spectroscopy (FTIR) and analyze the potential of this material as an adsorbent. Kinetic studies and isotherm analysis were performed in batch. The results showed the potential of the natural zeolite to remove the pollutant in an aqueous medium reaching a maximum adsorption capacity of 8.25 mg g(−1). The adsorption process followed a pseudo-second-order kinetics indicating that the adsorption was based on a chemisorption process. The isotherms curves shown favorable adsorption and the Langmuir isotherm model fit the experimental data better. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11356-021-17452-z. |
format | Online Article Text |
id | pubmed-8593643 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-85936432021-11-16 Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics Coslop, Thaísa Frossard Nippes, Ramiro Picoli Bergamasco, Rosangela Scaliante, Mara Heloisa Neves Olsen Environ Sci Pollut Res Int Adsorption (and Catalysis or Photocatalysis) Applied to Environmental Protection Diazepam has been detected in water sources around the world affecting the quality of drinking water. Even in small quantities, recent studies have proven the negative effects of the drug on human body. Since traditional water and sewage treatment do not remove this type of contaminant, it became interesting to evaluate forms to remove them from water sources. A cheap and eco-friendly alternative to remove this drug from the water is through adsorption using the natural clinoptilolite zeolite as an adsorbent. This work goal was to study the characterizations of clinoptilolite, such as scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometer (XRD), and Fourier transform infrared spectroscopy (FTIR) and analyze the potential of this material as an adsorbent. Kinetic studies and isotherm analysis were performed in batch. The results showed the potential of the natural zeolite to remove the pollutant in an aqueous medium reaching a maximum adsorption capacity of 8.25 mg g(−1). The adsorption process followed a pseudo-second-order kinetics indicating that the adsorption was based on a chemisorption process. The isotherms curves shown favorable adsorption and the Langmuir isotherm model fit the experimental data better. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11356-021-17452-z. Springer Berlin Heidelberg 2021-11-16 2022 /pmc/articles/PMC8593643/ /pubmed/34783951 http://dx.doi.org/10.1007/s11356-021-17452-z Text en © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2021 This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Adsorption (and Catalysis or Photocatalysis) Applied to Environmental Protection Coslop, Thaísa Frossard Nippes, Ramiro Picoli Bergamasco, Rosangela Scaliante, Mara Heloisa Neves Olsen Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title | Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title_full | Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title_fullStr | Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title_full_unstemmed | Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title_short | Evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
title_sort | evaluation of diazepam adsorption in aqueous media using low-cost and natural zeolite: equilibrium and kinetics |
topic | Adsorption (and Catalysis or Photocatalysis) Applied to Environmental Protection |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8593643/ https://www.ncbi.nlm.nih.gov/pubmed/34783951 http://dx.doi.org/10.1007/s11356-021-17452-z |
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