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Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder

The present work was aimed at evaluating the adsorption properties of methylene blue dye and phenol by activated carbons derived from pyrolysis tyre powder. The activation was carried out under CO 2 at 1000 °C for 2 h. The activated carbon (AC10-2) was demineralized using H 2 F 2 (AC-Demi), followed...

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Main Authors: Mohd. Shaid, Mohd. Shafiq Hakimi, Ahmad Zaini, Muhammad Abbas, Nasri, Noor Shawal
Format: Article
Published: Elsevier Ltd. 2019
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/88598/
http://dx.doi.org/10.1016/j.jclepro.2019.03.097
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spelling my.utm.885982020-12-15T10:31:38Z http://eprints.utm.my/id/eprint/88598/ Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder Mohd. Shaid, Mohd. Shafiq Hakimi Ahmad Zaini, Muhammad Abbas Nasri, Noor Shawal TP Chemical technology The present work was aimed at evaluating the adsorption properties of methylene blue dye and phenol by activated carbons derived from pyrolysis tyre powder. The activation was carried out under CO 2 at 1000 °C for 2 h. The activated carbon (AC10-2) was demineralized using H 2 F 2 (AC-Demi), followed by oxidation with nitric acid (AC-Oxi). Consequently, the activated carbons were characterized for textural properties, pH PZC , surface functional groups and surface morphology. Batch adsorption studies were conducted by varying the initial concentration of model pollutants, contact time and temperature, from which the experimental data were fitted into isotherm, kinetics and thermodynamics models. Upon oxidation, AC-Oxi shows an increase of surface area to 352 m 2 /g as compared to AC10-2 (237 m 2 /g). Result also shows that AC-Oxi exhibits a higher methylene blue adsorption of 107 mg/g, while AC10-2 shows a higher phenol adsorption of 48 mg/g. The equilibrium data of methylene blue adsorption fitted well with Langmuir and Redlich-Peterson models, while that of phenol adsorption obeyed Freundlich isotherm. The kinetics data of both model pollutants could be described by the pseudo-second-order model, where the rate-limiting step could be dominated by pore diffusion. The adsorption of methylene blue is endothermic and spontaneous at high temperature, while that of phenol adsorption is exothermic and spontaneous at low temperature. Elsevier Ltd. 2019-06-20 Article PeerReviewed Mohd. Shaid, Mohd. Shafiq Hakimi and Ahmad Zaini, Muhammad Abbas and Nasri, Noor Shawal (2019) Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder. Journal of Cleaner Production, 223 . pp. 487-498. ISSN 0959-6526 http://dx.doi.org/10.1016/j.jclepro.2019.03.097 DOI:10.1016/j.jclepro.2019.03.097
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 TP Chemical technology
spellingShingle TP Chemical technology
Mohd. Shaid, Mohd. Shafiq Hakimi
Ahmad Zaini, Muhammad Abbas
Nasri, Noor Shawal
Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
description The present work was aimed at evaluating the adsorption properties of methylene blue dye and phenol by activated carbons derived from pyrolysis tyre powder. The activation was carried out under CO 2 at 1000 °C for 2 h. The activated carbon (AC10-2) was demineralized using H 2 F 2 (AC-Demi), followed by oxidation with nitric acid (AC-Oxi). Consequently, the activated carbons were characterized for textural properties, pH PZC , surface functional groups and surface morphology. Batch adsorption studies were conducted by varying the initial concentration of model pollutants, contact time and temperature, from which the experimental data were fitted into isotherm, kinetics and thermodynamics models. Upon oxidation, AC-Oxi shows an increase of surface area to 352 m 2 /g as compared to AC10-2 (237 m 2 /g). Result also shows that AC-Oxi exhibits a higher methylene blue adsorption of 107 mg/g, while AC10-2 shows a higher phenol adsorption of 48 mg/g. The equilibrium data of methylene blue adsorption fitted well with Langmuir and Redlich-Peterson models, while that of phenol adsorption obeyed Freundlich isotherm. The kinetics data of both model pollutants could be described by the pseudo-second-order model, where the rate-limiting step could be dominated by pore diffusion. The adsorption of methylene blue is endothermic and spontaneous at high temperature, while that of phenol adsorption is exothermic and spontaneous at low temperature.
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 Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
title_short Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
title_full Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
title_fullStr Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
title_full_unstemmed Evaluation of methylene blue dye and phenol removal onto modified CO2- activated pyrolysis tyre powder
title_sort evaluation of methylene blue dye and phenol removal onto modified co2- activated pyrolysis tyre powder
publisher Elsevier Ltd.
publishDate 2019
url http://eprints.utm.my/id/eprint/88598/
http://dx.doi.org/10.1016/j.jclepro.2019.03.097
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score 13.211869

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