Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal
Potential of agrowastes were harnesses for preparation of activated carbon (AC) for dyes removal from aqueous solution. In this study, longan seed based activated carbon (LSAC) and pistachios shell based activated carbon (PSAC) were prepared using physiochemical activation consisting of potassium hy...
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| Format: | Thesis |
| Language: | English |
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2017
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| Online Access: | http://eprints.usm.my/47281/ http://eprints.usm.my/47281/1/Activated%20Carbon%20From%20Longan%20Seed%20And%20Pistachios%20Shell%20Prepared%20Via%20Microwave%20Irradiated%20For%20Dye%20Removal.pdf |
| _version_ | 1848880828845654016 |
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| author | Baharom, Siti Zawiyah |
| author_facet | Baharom, Siti Zawiyah |
| author_sort | Baharom, Siti Zawiyah |
| building | USM Institutional Repository |
| collection | Online Access |
| description | Potential of agrowastes were harnesses for preparation of activated carbon (AC) for dyes removal from aqueous solution. In this study, longan seed based activated carbon (LSAC) and pistachios shell based activated carbon (PSAC) were prepared using physiochemical activation consisting of potassium hydroxide (KOH) impregnation, CO2 gasification and microwave irradiation. The performance of the LSAC and PSAC were evaluated by conducting a batch adsorption study for methylene blue (MB) and remazol brilliant blue R (RBBR) removal. By using central composite design (CCD), the optimum preparation conditions of radiation power, radiation time and IR were determined for LSAC (440 watt, 2.0 min and IR 0.7) and PSAC (440 watt, 2.07 min and 1.0), which resulted MB removal of 77.0% and 80.9%, respectively; RBBR removal of 59.4% and 69.8%, respectively and yield of 22.1% and 21.7%, respectively. LSAC and PSAC have high surface area (>847 m2/g), pore volume (> 0.49 cm3/g) and fixed carbon content (>76%). The LSAC and PSAC have heterogeneous type pore size in mesoporous region. The effect of initial dye concentrations (25-300 mg/L), contact times (0-24 hours) and solution temperatures (30-60oC) were evaluated. The MB and RBBR adsorption by LSAC and PSAC were increased as the initial dye concentration and contact time increased. The adsorption equilibrium data for both dyes onto LSAC and PSAC were best fitted by Freundlich model. Meanwhile, the kinetic data was best represented by the pseudo first-order kinetic model. For both dyes, the adsorption of LSAC and PSAC were respectively endothermic and exothermic processes. All the adsorption processes were mainly governed by the film-diffusion controlled mechanism |
| first_indexed | 2025-11-15T18:09:20Z |
| format | Thesis |
| id | usm-47281 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T18:09:20Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-472812021-11-17T03:42:14Z http://eprints.usm.my/47281/ Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal Baharom, Siti Zawiyah T Technology (General) TP155-156 Chemical engineering Potential of agrowastes were harnesses for preparation of activated carbon (AC) for dyes removal from aqueous solution. In this study, longan seed based activated carbon (LSAC) and pistachios shell based activated carbon (PSAC) were prepared using physiochemical activation consisting of potassium hydroxide (KOH) impregnation, CO2 gasification and microwave irradiation. The performance of the LSAC and PSAC were evaluated by conducting a batch adsorption study for methylene blue (MB) and remazol brilliant blue R (RBBR) removal. By using central composite design (CCD), the optimum preparation conditions of radiation power, radiation time and IR were determined for LSAC (440 watt, 2.0 min and IR 0.7) and PSAC (440 watt, 2.07 min and 1.0), which resulted MB removal of 77.0% and 80.9%, respectively; RBBR removal of 59.4% and 69.8%, respectively and yield of 22.1% and 21.7%, respectively. LSAC and PSAC have high surface area (>847 m2/g), pore volume (> 0.49 cm3/g) and fixed carbon content (>76%). The LSAC and PSAC have heterogeneous type pore size in mesoporous region. The effect of initial dye concentrations (25-300 mg/L), contact times (0-24 hours) and solution temperatures (30-60oC) were evaluated. The MB and RBBR adsorption by LSAC and PSAC were increased as the initial dye concentration and contact time increased. The adsorption equilibrium data for both dyes onto LSAC and PSAC were best fitted by Freundlich model. Meanwhile, the kinetic data was best represented by the pseudo first-order kinetic model. For both dyes, the adsorption of LSAC and PSAC were respectively endothermic and exothermic processes. All the adsorption processes were mainly governed by the film-diffusion controlled mechanism 2017-08-01 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/47281/1/Activated%20Carbon%20From%20Longan%20Seed%20And%20Pistachios%20Shell%20Prepared%20Via%20Microwave%20Irradiated%20For%20Dye%20Removal.pdf Baharom, Siti Zawiyah (2017) Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | T Technology (General) TP155-156 Chemical engineering Baharom, Siti Zawiyah Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title | Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title_full | Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title_fullStr | Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title_full_unstemmed | Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title_short | Activated Carbon From Longan Seed And Pistachios Shell Prepared Via Microwave Irradiated For Dye Removal |
| title_sort | activated carbon from longan seed and pistachios shell prepared via microwave irradiated for dye removal |
| topic | T Technology (General) TP155-156 Chemical engineering |
| url | http://eprints.usm.my/47281/ http://eprints.usm.my/47281/1/Activated%20Carbon%20From%20Longan%20Seed%20And%20Pistachios%20Shell%20Prepared%20Via%20Microwave%20Irradiated%20For%20Dye%20Removal.pdf |