Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis
In this present work, organo-modified rice husk (SMRH) adsorbent was prepared by using cetyltrimethyl ammonium bromide (CTAB) for removing Congo red (CR), a model anionic dye, from aqueous solution. The FTIR analysis indicated that CTAB was adsorbed onto the surface of rice husk. The adsorption wa...
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| Format: | Article |
| Language: | English |
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Prince of Songkla University
2019-10-01
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| Series: | Songklanakarin Journal of Science and Technology (SJST) |
| Subjects: | |
| Online Access: | https://rdo.psu.ac.th/sjstweb/journal/41-5/15.pdf |
| _version_ | 1818522277491245056 |
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| author | Chanut Bamroongwongdee Songsiri Suwannee Manit Kongsomsaksiri |
| author_facet | Chanut Bamroongwongdee Songsiri Suwannee Manit Kongsomsaksiri |
| author_sort | Chanut Bamroongwongdee |
| collection | DOAJ |
| description | In this present work, organo-modified rice husk (SMRH) adsorbent was prepared by using cetyltrimethyl ammonium
bromide (CTAB) for removing Congo red (CR), a model anionic dye, from aqueous solution. The FTIR analysis indicated that
CTAB was adsorbed onto the surface of rice husk. The adsorption was found to be favored at a lower pH. The amount of CR
uptake was found to increase with increasing the initial CR concentration and contact time but decrease with increasing the
amount of adsorbent. The equilibrium adsorption data were fitted well with the Langmuir model. The adsorption kinetics showed
that CR adsorption onto SMRH followed the pseudo-second-order model. It was found that intra-particle diffusion was not the
only rate-determining step. Thermodynamic studies revealed that CR adsorption onto SMRH was spontaneous and endothermic
in nature. |
| first_indexed | 2024-12-11T05:31:08Z |
| format | Article |
| id | doaj.art-4942477ee1a44903989a89a7005e4cd6 |
| institution | Directory Open Access Journal |
| issn | 0125-3395 |
| language | English |
| last_indexed | 2024-12-11T05:31:08Z |
| publishDate | 2019-10-01 |
| publisher | Prince of Songkla University |
| record_format | Article |
| series | Songklanakarin Journal of Science and Technology (SJST) |
| spelling | doaj.art-4942477ee1a44903989a89a7005e4cd62022-12-22T01:19:25ZengPrince of Songkla UniversitySongklanakarin Journal of Science and Technology (SJST)0125-33952019-10-014151076108310.14456/sjst-psu.2019.135Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysisChanut Bamroongwongdee0Songsiri Suwannee1Manit Kongsomsaksiri2Department of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bang Sue, Bangkok, 10800 ThailandDepartment of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bang Sue, Bangkok, 10800 ThailandDepartment of Industrial Chemistry, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok, Bang Sue, Bangkok, 10800 ThailandIn this present work, organo-modified rice husk (SMRH) adsorbent was prepared by using cetyltrimethyl ammonium bromide (CTAB) for removing Congo red (CR), a model anionic dye, from aqueous solution. The FTIR analysis indicated that CTAB was adsorbed onto the surface of rice husk. The adsorption was found to be favored at a lower pH. The amount of CR uptake was found to increase with increasing the initial CR concentration and contact time but decrease with increasing the amount of adsorbent. The equilibrium adsorption data were fitted well with the Langmuir model. The adsorption kinetics showed that CR adsorption onto SMRH followed the pseudo-second-order model. It was found that intra-particle diffusion was not the only rate-determining step. Thermodynamic studies revealed that CR adsorption onto SMRH was spontaneous and endothermic in nature.https://rdo.psu.ac.th/sjstweb/journal/41-5/15.pdfadsorptioncongo redmodified rice huskkineticsthermodynamics |
| spellingShingle | Chanut Bamroongwongdee Songsiri Suwannee Manit Kongsomsaksiri Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis Songklanakarin Journal of Science and Technology (SJST) adsorption congo red modified rice husk kinetics thermodynamics |
| title | Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis |
| title_full | Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis |
| title_fullStr | Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis |
| title_full_unstemmed | Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis |
| title_short | Adsorption of Congo red from aqueous solution by surfactant-modified rice husk: Kinetic, isotherm and thermodynamic analysis |
| title_sort | adsorption of congo red from aqueous solution by surfactant modified rice husk kinetic isotherm and thermodynamic analysis |
| topic | adsorption congo red modified rice husk kinetics thermodynamics |
| url | https://rdo.psu.ac.th/sjstweb/journal/41-5/15.pdf |
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