Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism
The adsorption of manganese ions from aqueous solutions by pure and acid-treated Opuntia ficus indica as natural low-cost and eco-friendly adsorbents was investigated. The adsorbents’ structures were characterized by powder X-ray diffraction and infrared spectroscopy. Specific surface areas were det...
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Slovenian Chemical Society
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doaj-8ea17d0627ab429b9b82abe5181aadc42021-09-30T07:59:00ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552021-09-0168354856110.17344/acsi.2020.6248975Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and MechanismBoutheina Djobbi0Ghofrane Lassoued Ben Miled1Hatem Raddadi2Rached Ben Hassen3University of Tunis El ManarUniversity of Tunis El ManarMinistry of environment TunisiaUniversity of Tunis El ManarThe adsorption of manganese ions from aqueous solutions by pure and acid-treated Opuntia ficus indica as natural low-cost and eco-friendly adsorbents was investigated. The adsorbents’ structures were characterized by powder X-ray diffraction and infrared spectroscopy. Specific surface areas were determined using the Brunauer-Emmett-Tell equation. The study was carried out under various parameters influencing the manganese removal efficiency such as pH, temperature, contact time, adsorbent dose and initial concentration of manganese ion. The maximum adsorption capacity reached 42.02 mg/g for acid-treated Opuntia ficus indica, and only 20.8 mg /g for pure Opuntia ficus indica. The Langmuir, Freundlich and Temkin isotherms equations were tested, and the best fit was obtained by the Langmuir model for both adsorbents. The thermodynamic study shows that chemisorption is the main adsorption mechanism for the activated adsorbent while physisorption is the main adsorption mechanism for the pure adsorbent. The kinetics of the adsorption have been studied using four kinetics models of pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion. Structural analyses indicate the appearance of MnOx oxides on the cellulose fibers. The adsorption mechanisms consist of an electrostatic interaction followed by oxidation of the Mn (II) to higher degrees, then probably by binding to the surface of the adsorbent by different C-O-MnOx bonds.https://journals.matheo.si/index.php/ACSi/article/view/6248adsorption mechanismmanganeseremoval efficiencyopuntia ficus indicaenvironmental |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Boutheina Djobbi Ghofrane Lassoued Ben Miled Hatem Raddadi Rached Ben Hassen |
spellingShingle |
Boutheina Djobbi Ghofrane Lassoued Ben Miled Hatem Raddadi Rached Ben Hassen Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism Acta Chimica Slovenica adsorption mechanism manganese removal efficiency opuntia ficus indica environmental |
author_facet |
Boutheina Djobbi Ghofrane Lassoued Ben Miled Hatem Raddadi Rached Ben Hassen |
author_sort |
Boutheina Djobbi |
title |
Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism |
title_short |
Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism |
title_full |
Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism |
title_fullStr |
Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism |
title_full_unstemmed |
Efficient Removal of Aqueous Manganese (II) Cations by Activated Opuntia Ficus Indica Powder: Adsorption Performance and Mechanism |
title_sort |
efficient removal of aqueous manganese (ii) cations by activated opuntia ficus indica powder: adsorption performance and mechanism |
publisher |
Slovenian Chemical Society |
series |
Acta Chimica Slovenica |
issn |
1318-0207 1580-3155 |
publishDate |
2021-09-01 |
description |
The adsorption of manganese ions from aqueous solutions by pure and acid-treated Opuntia ficus indica as natural low-cost and eco-friendly adsorbents was investigated. The adsorbents’ structures were characterized by powder X-ray diffraction and infrared spectroscopy. Specific surface areas were determined using the Brunauer-Emmett-Tell equation. The study was carried out under various parameters influencing the manganese removal efficiency such as pH, temperature, contact time, adsorbent dose and initial concentration of manganese ion. The maximum adsorption capacity reached 42.02 mg/g for acid-treated Opuntia ficus indica, and only 20.8 mg /g for pure Opuntia ficus indica. The Langmuir, Freundlich and Temkin isotherms equations were tested, and the best fit was obtained by the Langmuir model for both adsorbents. The thermodynamic study shows that chemisorption is the main adsorption mechanism for the activated adsorbent while physisorption is the main adsorption mechanism for the pure adsorbent. The kinetics of the adsorption have been studied using four kinetics models of pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion. Structural analyses indicate the appearance of MnOx oxides on the cellulose fibers. The adsorption mechanisms consist of an electrostatic interaction followed by oxidation of the Mn (II) to higher degrees, then probably by binding to the surface of the adsorbent by different C-O-MnOx bonds. |
topic |
adsorption mechanism manganese removal efficiency opuntia ficus indica environmental |
url |
https://journals.matheo.si/index.php/ACSi/article/view/6248 |
work_keys_str_mv |
AT boutheinadjobbi efficientremovalofaqueousmanganeseiicationsbyactivatedopuntiaficusindicapowderadsorptionperformanceandmechanism AT ghofranelassouedbenmiled efficientremovalofaqueousmanganeseiicationsbyactivatedopuntiaficusindicapowderadsorptionperformanceandmechanism AT hatemraddadi efficientremovalofaqueousmanganeseiicationsbyactivatedopuntiaficusindicapowderadsorptionperformanceandmechanism AT rachedbenhassen efficientremovalofaqueousmanganeseiicationsbyactivatedopuntiaficusindicapowderadsorptionperformanceandmechanism |
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1716863806452269056 |