Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent
This research focused on the removal of Fe(III) ions from an aqueous solution of wastewater through an adsorption process using biosorbents of natural palmyra palm fruit fibres (N–PPF) and chemically modified palmyra palm fruit fibres (C–PPF). BET was used to determine the pore volume and pore size...
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MDPI AG
2022-10-01
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| author | Suphapan Satchawan Pongthipun Phuengphai Acharaporn Ratanamanee Nonglak Meethong |
| author_facet | Suphapan Satchawan Pongthipun Phuengphai Acharaporn Ratanamanee Nonglak Meethong |
| author_sort | Suphapan Satchawan |
| collection | DOAJ |
| description | This research focused on the removal of Fe(III) ions from an aqueous solution of wastewater through an adsorption process using biosorbents of natural palmyra palm fruit fibres (N–PPF) and chemically modified palmyra palm fruit fibres (C–PPF). BET was used to determine the pore volume and pore size of the biosorbents; the C–PPF was more than N–PPF at 0.01069 cm<sup>3</sup>/g and 450.2094 Å, respectively. The initial concentration of Fe(III), the adsorbent dosage, solution pH, and contact time for optimal adsorption were investigated for adsorption, and it was found that the dosage of the adsorbent was 2.0 g, pH 4, and 300 min for adsorbent dosage, solution pH, and contact time, respectively. The adsorption data were consistent with the three models, though the Freundlich model provided the best fit. The characteristics for both before/after adsorption were examined by FT–IR, which showed that hydroxyl groups were involved in adsorption. SEM–EDX analysis confirmed the successful increase of containing functional groups during adsorption. Adsorption proceeded according to a pseudo–first–order kinetic model for N–PPF, while the adsorption of C-PPF was according to both kinetic models. It was revealed that Fe(III) adsorption is an exothermic process that occurs on the surface of heterogeneous adsorbents and physisorption. The intra-particle diffusion model is appropriate to explain the rate-controlling step in the Fe(III) adsorption process of natural fibres. |
| first_indexed | 2024-03-09T20:45:49Z |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T20:45:49Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-8b517cbf79fa42b692478cdef88a45c12023-11-23T22:46:22ZengMDPI AGApplied Sciences2076-34172022-10-0112201054010.3390/app122010540Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a BiosorbentSuphapan Satchawan0Pongthipun Phuengphai1Acharaporn Ratanamanee2Nonglak Meethong3Department of Chemistry, Faculty of Science, Chandrakasam Rajabhat University, Bangkok 10900, ThailandProgram of Chemistry, Department of Fundamental Science, Faculty of Science and Technology, Surindra Rajabhat University, Surin 32000, ThailandDepartment of Chemistry, Faculty of Engineering, Rajamangala University of Technology Isan, Khon Kaen Campus, Khon Kaen 40000, ThailandMaterials Science and Nanotechnology Program, Department of Physics, Faculty of Science, Khon Kaen University, Khon Kaen 40002, ThailandThis research focused on the removal of Fe(III) ions from an aqueous solution of wastewater through an adsorption process using biosorbents of natural palmyra palm fruit fibres (N–PPF) and chemically modified palmyra palm fruit fibres (C–PPF). BET was used to determine the pore volume and pore size of the biosorbents; the C–PPF was more than N–PPF at 0.01069 cm<sup>3</sup>/g and 450.2094 Å, respectively. The initial concentration of Fe(III), the adsorbent dosage, solution pH, and contact time for optimal adsorption were investigated for adsorption, and it was found that the dosage of the adsorbent was 2.0 g, pH 4, and 300 min for adsorbent dosage, solution pH, and contact time, respectively. The adsorption data were consistent with the three models, though the Freundlich model provided the best fit. The characteristics for both before/after adsorption were examined by FT–IR, which showed that hydroxyl groups were involved in adsorption. SEM–EDX analysis confirmed the successful increase of containing functional groups during adsorption. Adsorption proceeded according to a pseudo–first–order kinetic model for N–PPF, while the adsorption of C-PPF was according to both kinetic models. It was revealed that Fe(III) adsorption is an exothermic process that occurs on the surface of heterogeneous adsorbents and physisorption. The intra-particle diffusion model is appropriate to explain the rate-controlling step in the Fe(III) adsorption process of natural fibres.https://www.mdpi.com/2076-3417/12/20/10540adsorptionisothermkineticpalmyra palm fruitbiosorbent |
| spellingShingle | Suphapan Satchawan Pongthipun Phuengphai Acharaporn Ratanamanee Nonglak Meethong Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent Applied Sciences adsorption isotherm kinetic palmyra palm fruit biosorbent |
| title | Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent |
| title_full | Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent |
| title_fullStr | Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent |
| title_full_unstemmed | Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent |
| title_short | Kinetic and Equilibrium Studies of Fe(III) Sorption from an Aqueous Solution Using Palmyra Palm Fruit Fibres as a Biosorbent |
| title_sort | kinetic and equilibrium studies of fe iii sorption from an aqueous solution using palmyra palm fruit fibres as a biosorbent |
| topic | adsorption isotherm kinetic palmyra palm fruit biosorbent |
| url | https://www.mdpi.com/2076-3417/12/20/10540 |
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