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Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder

This work was aimed at evaluating the adsorption properties of methylene blue dye by CO 2 -activated pyrolysis tyre powder carbons. The activated carbons were prepared under the flow of CO 2 at temperatures between 900°C and 1,000°C for durations of 2–8 h. Consequently, the activated carbons were ch...

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Main Authors: Mohd. Shaid, Mohd. Shafiq Hakimi, Ahmad Zaini, Muhammad Abbas, Nasri, Noor Shawal
Format: Article
Published: Desalination Publications 2019
Subjects:
Q Science (General)
Online Access:http://eprints.utm.my/id/eprint/89248/
http://dx.doi.org/10.5004/dwt.2019.23565
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spelling my.utm.892482021-02-22T06:01:17Z http://eprints.utm.my/id/eprint/89248/ Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder Mohd. Shaid, Mohd. Shafiq Hakimi Ahmad Zaini, Muhammad Abbas Nasri, Noor Shawal Q Science (General) This work was aimed at evaluating the adsorption properties of methylene blue dye by CO 2 -activated pyrolysis tyre powder carbons. The activated carbons were prepared under the flow of CO 2 at temperatures between 900°C and 1,000°C for durations of 2–8 h. Consequently, the activated carbons were characterized for textural properties, pH PZC , surface functional groups, and surface morphology. Batch adsorption was conducted by varying the concentrations of methylene blue and contact times, from which the experimental data were fitted into isotherm and kinetic models. Results show that CO 2 activation at 1,000°C for 2 h yields a 57.2% activated carbon with a 243 m ² /g specific surface area and a maximum methylene blue adsorption capacity of 132 mg/g. The Langmuir and Redlich– Peterson models appeared to fit the equilibrium data well. The rate of adsorption data obeyed the pseudo-second-order kinetic model, while the rate-limiting step in the adsorption of methylene blue is probably film diffusion. The adsorption is endothermic and spontaneous with increasing temperature. Activated carbon prepared from pyrolysis tyre powder by CO 2 activation is a promising candidate to abate dye wastewater pollution. Desalination Publications 2019-03 Article PeerReviewed Mohd. Shaid, Mohd. Shafiq Hakimi and Ahmad Zaini, Muhammad Abbas and Nasri, Noor Shawal (2019) Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder. Desalination and Water Treatment, 143 . pp. 323-332. ISSN 1944-3994 http://dx.doi.org/10.5004/dwt.2019.23565 DOI:10.5004/dwt.2019.23565
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic Q Science (General)
spellingShingle Q Science (General)
Mohd. Shaid, Mohd. Shafiq Hakimi
Ahmad Zaini, Muhammad Abbas
Nasri, Noor Shawal
Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
description This work was aimed at evaluating the adsorption properties of methylene blue dye by CO 2 -activated pyrolysis tyre powder carbons. The activated carbons were prepared under the flow of CO 2 at temperatures between 900°C and 1,000°C for durations of 2–8 h. Consequently, the activated carbons were characterized for textural properties, pH PZC , surface functional groups, and surface morphology. Batch adsorption was conducted by varying the concentrations of methylene blue and contact times, from which the experimental data were fitted into isotherm and kinetic models. Results show that CO 2 activation at 1,000°C for 2 h yields a 57.2% activated carbon with a 243 m ² /g specific surface area and a maximum methylene blue adsorption capacity of 132 mg/g. The Langmuir and Redlich– Peterson models appeared to fit the equilibrium data well. The rate of adsorption data obeyed the pseudo-second-order kinetic model, while the rate-limiting step in the adsorption of methylene blue is probably film diffusion. The adsorption is endothermic and spontaneous with increasing temperature. Activated carbon prepared from pyrolysis tyre powder by CO 2 activation is a promising candidate to abate dye wastewater pollution.
format Article
author Mohd. Shaid, Mohd. Shafiq Hakimi
Ahmad Zaini, Muhammad Abbas
Nasri, Noor Shawal
author_facet Mohd. Shaid, Mohd. Shafiq Hakimi
Ahmad Zaini, Muhammad Abbas
Nasri, Noor Shawal
author_sort Mohd. Shaid, Mohd. Shafiq Hakimi
title Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
title_short Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
title_full Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
title_fullStr Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
title_full_unstemmed Isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto CO2-activated pyrolysis tyre powder
title_sort isotherm, kinetics and thermodynamics of methylene blue dye adsorption onto co2-activated pyrolysis tyre powder
publisher Desalination Publications
publishDate 2019
url http://eprints.utm.my/id/eprint/89248/
http://dx.doi.org/10.5004/dwt.2019.23565
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score 13.244367

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