Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica
Porous nanosilica material was synthesized using tetraethyl orthosilicate as the silica source and ethanol as solvent under basic condition. The product was characterized by a number of techniques, including single point BET nitrogen adsorption, field emission scanning electron microscope (FESEM) an...
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Elsevier Ltd
2018
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| Online Access: | http://umpir.ump.edu.my/id/eprint/23737/ http://umpir.ump.edu.my/id/eprint/23737/7/Isotherm%20and%20Kinetic%20Studies1.pdf |
| _version_ | 1848821876258766848 |
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| author | Tan, Suat Hian Nurul Ain, Ismail |
| author_facet | Tan, Suat Hian Nurul Ain, Ismail |
| author_sort | Tan, Suat Hian |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Porous nanosilica material was synthesized using tetraethyl orthosilicate as the silica source and ethanol as solvent under basic condition. The product was characterized by a number of techniques, including single point BET nitrogen adsorption, field emission scanning electron microscope (FESEM) and point of zero charge (pHPZC) by mass titration. Results of the studies confirmed the porous structures of the nanoparticles. The adsorption capacity of L-phenylalanine under optimized condition of pH 5.37 with 0.1 mol/L concentrations of L-phenylalanine and 2 hour contact time by using 40 mg of silica nanoparticles is 748.9 μg/g. Equilibrium data were modeled using the Langmuir and the Freundlich isotherms and both models fit well with the
experimental data which suggest chemisorption and physisorption reaction. For kinetic studies, the pseudo-second-order equation was the best-fit model for describing the adsorption process. |
| first_indexed | 2025-11-15T02:32:18Z |
| format | Article |
| id | ump-23737 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T02:32:18Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-237372019-01-21T07:22:42Z http://umpir.ump.edu.my/id/eprint/23737/ Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica Tan, Suat Hian Nurul Ain, Ismail Q Science (General) QC Physics T Technology (General) Porous nanosilica material was synthesized using tetraethyl orthosilicate as the silica source and ethanol as solvent under basic condition. The product was characterized by a number of techniques, including single point BET nitrogen adsorption, field emission scanning electron microscope (FESEM) and point of zero charge (pHPZC) by mass titration. Results of the studies confirmed the porous structures of the nanoparticles. The adsorption capacity of L-phenylalanine under optimized condition of pH 5.37 with 0.1 mol/L concentrations of L-phenylalanine and 2 hour contact time by using 40 mg of silica nanoparticles is 748.9 μg/g. Equilibrium data were modeled using the Langmuir and the Freundlich isotherms and both models fit well with the experimental data which suggest chemisorption and physisorption reaction. For kinetic studies, the pseudo-second-order equation was the best-fit model for describing the adsorption process. Elsevier Ltd 2018 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/23737/7/Isotherm%20and%20Kinetic%20Studies1.pdf Tan, Suat Hian and Nurul Ain, Ismail (2018) Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica. Materials Today: Proceedings, 5 (1 Part 3). pp. 3193-3201. ISSN 2214-7853. (Published) https://doi.org/10.1016/j.matpr.2018.01.128 https://doi.org/10.1016/j.matpr.2018.01.128 |
| spellingShingle | Q Science (General) QC Physics T Technology (General) Tan, Suat Hian Nurul Ain, Ismail Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title | Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title_full | Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title_fullStr | Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title_full_unstemmed | Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title_short | Isotherm and Kinetic Studies of L-Phenylalanine Adsorption onto Porous Nanosilica |
| title_sort | isotherm and kinetic studies of l-phenylalanine adsorption onto porous nanosilica |
| topic | Q Science (General) QC Physics T Technology (General) |
| url | http://umpir.ump.edu.my/id/eprint/23737/ http://umpir.ump.edu.my/id/eprint/23737/ http://umpir.ump.edu.my/id/eprint/23737/ http://umpir.ump.edu.my/id/eprint/23737/7/Isotherm%20and%20Kinetic%20Studies1.pdf |