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Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon
The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatog...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742164/ https://www.ncbi.nlm.nih.gov/pubmed/34997927 http://dx.doi.org/10.1007/s11356-021-18484-1 |
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author | de Freitas, Driélle Aparecida Barbosa, Júlia Adorno Labuto, Geórgia Nocelli, Roberta Cornélio Ferreira Carrilho, Elma Neide Vasconcelos Martins |
author_facet | de Freitas, Driélle Aparecida Barbosa, Júlia Adorno Labuto, Geórgia Nocelli, Roberta Cornélio Ferreira Carrilho, Elma Neide Vasconcelos Martins |
author_sort | de Freitas, Driélle Aparecida |
collection | PubMed |
description | The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatography coupled to a diode array detector (HPLC–DAD). The AC-NP was efficiently synthesized using a co-precipitation method and the impregnation of magnetite (NP) in the activated carbon (AC) was assessed by the crystalline planes found in the AC-NP structure shown in the XRD diffractograms. The AC-NP FTIR analysis also indicated predominant bands of Fe–O stretching of the magnetite at 610–570 cm(−1). Functional groups in AC and AC-NP were identified by absorption bands at 3550 and 1603 cm(−1), characteristic of O–H and C = C, respectively. The TMX adsorption kinetics in sugarcane juice was the pseudo-second-order type with r(2) = 0.9999, indicating a chemical adsorption process. The experimental sorption capacity (SC(exp)) for both TMX (standard) and TMX-I (insecticide) by AC-NP were 13.44 and 42.44 mg/g, respectively. Seven non-linear isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Toth, Hill, Sips, and Redlich-Peterson) were fitted to the experimental adsorption data of TMX and TMX-I by AC-NP. Considering the standard error (SE), Freundlich, Langmuir, and Sips were the most appropriate models to describe the TMX adsorption, and Hill’s best adjusted to TMX-I experimental data. The chromatographic method was highly satisfactory due to its high selectivity and recovery (91–103%). The efficiency of AC-NP in the sorption of TMX was confirmed by the excellent values of SC(exp) and sorption kinetics. |
format | Online Article Text |
id | pubmed-8742164 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-87421642022-01-10 Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon de Freitas, Driélle Aparecida Barbosa, Júlia Adorno Labuto, Geórgia Nocelli, Roberta Cornélio Ferreira Carrilho, Elma Neide Vasconcelos Martins Environ Sci Pollut Res Int Adsorption (and Catalysis or Photocatalysis) Applied to Environmental Protection The removal of the neonicotinoid and systemic pesticide thiamethoxam (TMX) from water and sugarcane juice by magnetic nanomodified activated carbon (AC-NP) is proposed. This adsorbent was synthesized and characterized by FTIR, XRD, and SEM, and TMX was quantified by high-performance liquid chromatography coupled to a diode array detector (HPLC–DAD). The AC-NP was efficiently synthesized using a co-precipitation method and the impregnation of magnetite (NP) in the activated carbon (AC) was assessed by the crystalline planes found in the AC-NP structure shown in the XRD diffractograms. The AC-NP FTIR analysis also indicated predominant bands of Fe–O stretching of the magnetite at 610–570 cm(−1). Functional groups in AC and AC-NP were identified by absorption bands at 3550 and 1603 cm(−1), characteristic of O–H and C = C, respectively. The TMX adsorption kinetics in sugarcane juice was the pseudo-second-order type with r(2) = 0.9999, indicating a chemical adsorption process. The experimental sorption capacity (SC(exp)) for both TMX (standard) and TMX-I (insecticide) by AC-NP were 13.44 and 42.44 mg/g, respectively. Seven non-linear isotherm models (Langmuir, Freundlich, Dubinin-Radushkevich, Toth, Hill, Sips, and Redlich-Peterson) were fitted to the experimental adsorption data of TMX and TMX-I by AC-NP. Considering the standard error (SE), Freundlich, Langmuir, and Sips were the most appropriate models to describe the TMX adsorption, and Hill’s best adjusted to TMX-I experimental data. The chromatographic method was highly satisfactory due to its high selectivity and recovery (91–103%). The efficiency of AC-NP in the sorption of TMX was confirmed by the excellent values of SC(exp) and sorption kinetics. Springer Berlin Heidelberg 2022-01-08 2022 /pmc/articles/PMC8742164/ /pubmed/34997927 http://dx.doi.org/10.1007/s11356-021-18484-1 Text en © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022 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 de Freitas, Driélle Aparecida Barbosa, Júlia Adorno Labuto, Geórgia Nocelli, Roberta Cornélio Ferreira Carrilho, Elma Neide Vasconcelos Martins Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title | Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title_full | Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title_fullStr | Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title_full_unstemmed | Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title_short | Removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
title_sort | removal of the pesticide thiamethoxam from sugarcane juice by magnetic nanomodified activated carbon |
topic | Adsorption (and Catalysis or Photocatalysis) Applied to Environmental Protection |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8742164/ https://www.ncbi.nlm.nih.gov/pubmed/34997927 http://dx.doi.org/10.1007/s11356-021-18484-1 |
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