Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention
Activated carbon obtained from <i>Opuntia ficus indica</i> by sodium hydroxide activation was employed for the adsorption of <i>p</i>-nitrophenol from water. The activated carbons obtained were characterized by Fourier transforms infrared spectroscopy, sorption of nitrogen, s...
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doaj-3584c185d2fc4b0da59ea3649e2692c22020-11-25T03:53:43ZengMDPI AGProcesses2227-97172020-10-0181242124210.3390/pr8101242Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol RetentionHanedi Elhleli0Faten Mannai1Mongi ben Mosbah2Ramzi Khiari3Younes Moussaoui4Materials, Environment and Energy Laboratory (UR14ES26), Faculty of Sciences of Gafsa, University of Gafsa, Gafsa 2112, TunisiaMaterials, Environment and Energy Laboratory (UR14ES26), Faculty of Sciences of Gafsa, University of Gafsa, Gafsa 2112, TunisiaMaterials, Environment and Energy Laboratory (UR14ES26), Faculty of Sciences of Gafsa, University of Gafsa, Gafsa 2112, TunisiaHigh Institute of Technological Studies (ISET), Ksar Hellal 5070, TunisiaFaculty of Sciences of Gafsa, University of Gafsa, Gafsa 2112, TunisiaActivated carbon obtained from <i>Opuntia ficus indica</i> by sodium hydroxide activation was employed for the adsorption of <i>p</i>-nitrophenol from water. The activated carbons obtained were characterized by Fourier transforms infrared spectroscopy, sorption of nitrogen, scanning electron microscopy, and Boehm titration. Effects of pH, contact time, amount of adsorbent, and temperature on the adsorption of <i>p</i>-nitrophenol were studied. Adsorption isotherms were analyzed using Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich models, and the thermodynamic parameters have been determined. The adsorption of <i>p</i>-nitrophenol was spontaneous, exothermic, and propitious at 15 °C and adopted the pseudo-second order model, and the most credible isotherm was Langmuir’s one. The activated carbon used in this work has good <i>p</i>-nitrophenol adsorption characteristics, and the study of the desorption and reuse of this carbon shows that it retains a removal rate greater than 94% after five cycles of adsorption-desorption.https://www.mdpi.com/2227-9717/8/10/1242porous carbonactivated carbonadsorption<i>p</i>-nitrophenol<i>Opuntia ficus indica</i> |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hanedi Elhleli Faten Mannai Mongi ben Mosbah Ramzi Khiari Younes Moussaoui |
spellingShingle |
Hanedi Elhleli Faten Mannai Mongi ben Mosbah Ramzi Khiari Younes Moussaoui Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention Processes porous carbon activated carbon adsorption <i>p</i>-nitrophenol <i>Opuntia ficus indica</i> |
author_facet |
Hanedi Elhleli Faten Mannai Mongi ben Mosbah Ramzi Khiari Younes Moussaoui |
author_sort |
Hanedi Elhleli |
title |
Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention |
title_short |
Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention |
title_full |
Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention |
title_fullStr |
Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention |
title_full_unstemmed |
Biocarbon Derived from <i>Opuntia ficus indica</i> for <i>p</i>-Nitrophenol Retention |
title_sort |
biocarbon derived from <i>opuntia ficus indica</i> for <i>p</i>-nitrophenol retention |
publisher |
MDPI AG |
series |
Processes |
issn |
2227-9717 |
publishDate |
2020-10-01 |
description |
Activated carbon obtained from <i>Opuntia ficus indica</i> by sodium hydroxide activation was employed for the adsorption of <i>p</i>-nitrophenol from water. The activated carbons obtained were characterized by Fourier transforms infrared spectroscopy, sorption of nitrogen, scanning electron microscopy, and Boehm titration. Effects of pH, contact time, amount of adsorbent, and temperature on the adsorption of <i>p</i>-nitrophenol were studied. Adsorption isotherms were analyzed using Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich models, and the thermodynamic parameters have been determined. The adsorption of <i>p</i>-nitrophenol was spontaneous, exothermic, and propitious at 15 °C and adopted the pseudo-second order model, and the most credible isotherm was Langmuir’s one. The activated carbon used in this work has good <i>p</i>-nitrophenol adsorption characteristics, and the study of the desorption and reuse of this carbon shows that it retains a removal rate greater than 94% after five cycles of adsorption-desorption. |
topic |
porous carbon activated carbon adsorption <i>p</i>-nitrophenol <i>Opuntia ficus indica</i> |
url |
https://www.mdpi.com/2227-9717/8/10/1242 |
work_keys_str_mv |
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