Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis
The potential of base treated Shorea dasyphylla (BTSD) sawdust for Acid Blue 25 (AB 25) adsorption was investigated in a batch adsorption process. Various physiochemical parameters such as pH, stirring rate, dosage, concentration, contact time and temperature were studied. The adsorbent was characte...
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| Format: | Article |
| Language: | English |
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Research Center for Eco-environmental Sciences,Chinese Academy of Sciences
2012
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| Online Access: | http://irep.iium.edu.my/29140/ http://irep.iium.edu.my/29140/1/Acid_Blue_25.pdf |
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| author | Megat Hanafiah, Megat Ahmad Kamal Wan Ngah, Wan Saime Zolkafly, Shahira Hilwani Lee, Ching Teong Abdul Majid, Zafri Azran |
| author_facet | Megat Hanafiah, Megat Ahmad Kamal Wan Ngah, Wan Saime Zolkafly, Shahira Hilwani Lee, Ching Teong Abdul Majid, Zafri Azran |
| author_sort | Megat Hanafiah, Megat Ahmad Kamal |
| building | IIUM Repository |
| collection | Online Access |
| description | The potential of base treated Shorea dasyphylla (BTSD) sawdust for Acid Blue 25 (AB 25) adsorption was investigated in a batch adsorption process. Various physiochemical parameters such as pH, stirring rate, dosage, concentration, contact time and temperature were studied. The adsorbent was characterized with Fourier transform infrared spectrophotometer, scanning electron microscope and Brunauer, Emmett and Teller analysis. The optimum conditions for AB 25 adsorption were pH 2, stirring rate 500 r/min, adsorbent dosage 0.10 g and contact time 60 min. The pseudo second-order model showed the best conformity to the kinetic data. The equilibrium adsorption of AB 25 was described by Freundlich and Langmuir, with the latter found to agree well with the isotherm model. The maximum monolayer adsorption capacity of BTSD was 24.39 mg/g at 300 K, estimated from the Langmuir model. Thermodynamic parameters such as Gibbs free energy, enthalpy and entropy were determined. It was found that AB 25 adsorption was spontaneous and exothermic. |
| first_indexed | 2025-11-14T15:27:48Z |
| format | Article |
| id | iium-29140 |
| institution | International Islamic University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T15:27:48Z |
| publishDate | 2012 |
| publisher | Research Center for Eco-environmental Sciences,Chinese Academy of Sciences |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | iium-291402013-03-15T08:11:06Z http://irep.iium.edu.my/29140/ Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis Megat Hanafiah, Megat Ahmad Kamal Wan Ngah, Wan Saime Zolkafly, Shahira Hilwani Lee, Ching Teong Abdul Majid, Zafri Azran QK Botany The potential of base treated Shorea dasyphylla (BTSD) sawdust for Acid Blue 25 (AB 25) adsorption was investigated in a batch adsorption process. Various physiochemical parameters such as pH, stirring rate, dosage, concentration, contact time and temperature were studied. The adsorbent was characterized with Fourier transform infrared spectrophotometer, scanning electron microscope and Brunauer, Emmett and Teller analysis. The optimum conditions for AB 25 adsorption were pH 2, stirring rate 500 r/min, adsorbent dosage 0.10 g and contact time 60 min. The pseudo second-order model showed the best conformity to the kinetic data. The equilibrium adsorption of AB 25 was described by Freundlich and Langmuir, with the latter found to agree well with the isotherm model. The maximum monolayer adsorption capacity of BTSD was 24.39 mg/g at 300 K, estimated from the Langmuir model. Thermodynamic parameters such as Gibbs free energy, enthalpy and entropy were determined. It was found that AB 25 adsorption was spontaneous and exothermic. Research Center for Eco-environmental Sciences,Chinese Academy of Sciences 2012-02 Article PeerReviewed application/pdf en http://irep.iium.edu.my/29140/1/Acid_Blue_25.pdf Megat Hanafiah, Megat Ahmad Kamal and Wan Ngah, Wan Saime and Zolkafly, Shahira Hilwani and Lee, Ching Teong and Abdul Majid, Zafri Azran (2012) Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis. Journal of Environmental Sciences-China, 24 (2). pp. 261-268. ISSN 1001-0742 http://www.sciencedirect.com/science/article/pii/S100107421160764X |
| spellingShingle | QK Botany Megat Hanafiah, Megat Ahmad Kamal Wan Ngah, Wan Saime Zolkafly, Shahira Hilwani Lee, Ching Teong Abdul Majid, Zafri Azran Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title | Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title_full | Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title_fullStr | Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title_full_unstemmed | Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title_short | Acid blue 25 adsorption on base treated Shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| title_sort | acid blue 25 adsorption on base treated shorea dasyphylla sawdust: kinetic, isotherm, thermodynamic and spectroscopic analysis |
| topic | QK Botany |
| url | http://irep.iium.edu.my/29140/ http://irep.iium.edu.my/29140/ http://irep.iium.edu.my/29140/1/Acid_Blue_25.pdf |