Cargando…

Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide

Magnetically modified activated carbon, which synthesized by nanomagnetic iron oxide, was used for fast and effective removal of Crystal Violet from aqueous solutions. The scanning electron microscopy (SEM) images of nano-adsorbent showed that the average sizes of adsorbent are less than 100 nm. The...

Descripción completa

Detalles Bibliográficos
Autores principales: Hamidzadeh, Soheila, Torabbeigi, Marzieh, Shahtaheri, Seyed Jamaleddin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4333261/
https://www.ncbi.nlm.nih.gov/pubmed/25699186
http://dx.doi.org/10.1186/s40201-015-0156-4
_version_ 1782358004154236928
author Hamidzadeh, Soheila
Torabbeigi, Marzieh
Shahtaheri, Seyed Jamaleddin
author_facet Hamidzadeh, Soheila
Torabbeigi, Marzieh
Shahtaheri, Seyed Jamaleddin
author_sort Hamidzadeh, Soheila
collection PubMed
description Magnetically modified activated carbon, which synthesized by nanomagnetic iron oxide, was used for fast and effective removal of Crystal Violet from aqueous solutions. The scanning electron microscopy (SEM) images of nano-adsorbent showed that the average sizes of adsorbent are less than 100 nm. The various parameters, affecting on adsorption process, were examined including pH and temperature of dye solution, dose of adsorbent, and contact time. Then, thermodynamic parameters of sorption were calculated. Langmuir and Freundlich isotherms were used to fit the resulting data. Adsorption kinetics was consistent with a pseudo second order equation. Thermodynamic parameters of adsorption, ∆H(0), and ∆S(0) were calculated. Also, for further investigations, nano magnetic iron oxides was synthesized and used as adsorbent. Sorption capacities were depending on the temperature varied from 44.7 to 67.1 mg/g and from 12.7 to 16.5 mg/g for magnetically modified activated carbon and nanomagnetic iron oxide, respectively.
format Online
Article
Text
id pubmed-4333261
institution National Center for Biotechnology Information
language English
publishDate 2015
publisher BioMed Central
record_format MEDLINE/PubMed
spelling pubmed-43332612015-02-20 Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide Hamidzadeh, Soheila Torabbeigi, Marzieh Shahtaheri, Seyed Jamaleddin J Environ Health Sci Eng Research Article Magnetically modified activated carbon, which synthesized by nanomagnetic iron oxide, was used for fast and effective removal of Crystal Violet from aqueous solutions. The scanning electron microscopy (SEM) images of nano-adsorbent showed that the average sizes of adsorbent are less than 100 nm. The various parameters, affecting on adsorption process, were examined including pH and temperature of dye solution, dose of adsorbent, and contact time. Then, thermodynamic parameters of sorption were calculated. Langmuir and Freundlich isotherms were used to fit the resulting data. Adsorption kinetics was consistent with a pseudo second order equation. Thermodynamic parameters of adsorption, ∆H(0), and ∆S(0) were calculated. Also, for further investigations, nano magnetic iron oxides was synthesized and used as adsorbent. Sorption capacities were depending on the temperature varied from 44.7 to 67.1 mg/g and from 12.7 to 16.5 mg/g for magnetically modified activated carbon and nanomagnetic iron oxide, respectively. BioMed Central 2015-01-31 /pmc/articles/PMC4333261/ /pubmed/25699186 http://dx.doi.org/10.1186/s40201-015-0156-4 Text en © Hamidzadeh et al.; licensee BioMed Central. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Hamidzadeh, Soheila
Torabbeigi, Marzieh
Shahtaheri, Seyed Jamaleddin
Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title_full Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title_fullStr Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title_full_unstemmed Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title_short Removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
title_sort removal of crystal violet from water by magnetically modified activated carbon and nanomagnetic iron oxide
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4333261/
https://www.ncbi.nlm.nih.gov/pubmed/25699186
http://dx.doi.org/10.1186/s40201-015-0156-4
work_keys_str_mv AT hamidzadehsoheila removalofcrystalvioletfromwaterbymagneticallymodifiedactivatedcarbonandnanomagneticironoxide
AT torabbeigimarzieh removalofcrystalvioletfromwaterbymagneticallymodifiedactivatedcarbonandnanomagneticironoxide
AT shahtaheriseyedjamaleddin removalofcrystalvioletfromwaterbymagneticallymodifiedactivatedcarbonandnanomagneticironoxide