Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption
This work was aimed at evaluating the adsorption characteristics of beta-cyclodextrin (ß-CD) chars. Char was prepared by pyrolysis in a furnace at 550 °C, while spherical hydrochar was obtained through hydrothermal carbonization in a Teflon autoclave at 180 °C. Both chars are water-insoluble and wer...
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| Format: | Article |
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Taylor and Francis Ltd.
2023
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| author | Mohamed Omar, Nawal Hasin Ahmad Zaini, Muhammad Abbas |
| author_facet | Mohamed Omar, Nawal Hasin Ahmad Zaini, Muhammad Abbas |
| author_sort | Mohamed Omar, Nawal Hasin |
| collection | ePrints |
| description | This work was aimed at evaluating the adsorption characteristics of beta-cyclodextrin (ß-CD) chars. Char was prepared by pyrolysis in a furnace at 550 °C, while spherical hydrochar was obtained through hydrothermal carbonization in a Teflon autoclave at 180 °C. Both chars are water-insoluble and were prepared without cross-linking agents. They were characterized for functional groups, thermal degradation, and surface morphology. The applicability of chars in adsorption was studied using malachite green solution at varying concentrations, contact times and temperatures. Hydrochar exhibits a better malachite green capacity of 18 mg/g. The adsorption rate and equilibrium data fitted well into pseudo-first-order and pseudo-second-order kinetics, and Langmuir and Dubinin–Radushkevich models, respectively. The thermodynamic parameters suggested that the removal process is spontaneous and endothermic in nature. |
| first_indexed | 2024-09-24T00:05:12Z |
| format | Article |
| id | utm.eprints-107220 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-09-24T00:05:12Z |
| publishDate | 2023 |
| publisher | Taylor and Francis Ltd. |
| record_format | dspace |
| spelling | utm.eprints-1072202024-08-28T07:01:27Z http://eprints.utm.my/107220/ Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption Mohamed Omar, Nawal Hasin Ahmad Zaini, Muhammad Abbas TP Chemical technology This work was aimed at evaluating the adsorption characteristics of beta-cyclodextrin (ß-CD) chars. Char was prepared by pyrolysis in a furnace at 550 °C, while spherical hydrochar was obtained through hydrothermal carbonization in a Teflon autoclave at 180 °C. Both chars are water-insoluble and were prepared without cross-linking agents. They were characterized for functional groups, thermal degradation, and surface morphology. The applicability of chars in adsorption was studied using malachite green solution at varying concentrations, contact times and temperatures. Hydrochar exhibits a better malachite green capacity of 18 mg/g. The adsorption rate and equilibrium data fitted well into pseudo-first-order and pseudo-second-order kinetics, and Langmuir and Dubinin–Radushkevich models, respectively. The thermodynamic parameters suggested that the removal process is spontaneous and endothermic in nature. Taylor and Francis Ltd. 2023 Article PeerReviewed Mohamed Omar, Nawal Hasin and Ahmad Zaini, Muhammad Abbas (2023) Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption. Fullerenes Nanotubes and Carbon Nanostructures, 31 (2). pp. 182-189. ISSN 1536-383X http://dx.doi.org/10.1080/1536383X.2022.2136169 DOI : 10.1080/1536383X.2022.2136169 |
| spellingShingle | TP Chemical technology Mohamed Omar, Nawal Hasin Ahmad Zaini, Muhammad Abbas Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title | Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title_full | Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title_fullStr | Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title_full_unstemmed | Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title_short | Beta-cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| title_sort | beta cyclodextrin carbon microspheres by hydrothermal carbonization for malachite green adsorption |
| topic | TP Chemical technology |
| work_keys_str_mv | AT mohamedomarnawalhasin betacyclodextrincarbonmicrospheresbyhydrothermalcarbonizationformalachitegreenadsorption AT ahmadzainimuhammadabbas betacyclodextrincarbonmicrospheresbyhydrothermalcarbonizationformalachitegreenadsorption |