Preparation And Characterization Of Modified Oil Palm (Elaeis Guineensis) Frond For The Removal Of Rhodamine B In Wastewater
| dc.contributor.author | Low, Ling Wei | |
| dc.date.accessioned | 2017-01-09T01:05:50Z | |
| dc.date.available | 2017-01-09T01:05:50Z | |
| dc.date.issued | 2016-09 | |
| dc.description.abstract | The adsorption process has been applied in various wastewater treatments, including dye wastewater. However, research on the use of agricultural waste such as oil palm frond and modified oil palm frond is still not thoroughly investigated. In this research, the adsorption of Rhodamine B (RB) from the aqueous solutions onto (a) raw Elaeis guineensis frond fiber (EGFF), (b) phosphoric acid modified EGFF (A-EGFF), (c) carbonized phosphoric acid modified EGFF (AC-EGFF), and (d) carbonized phosphoric acid modified EGFF impregnated with ferric oxide (AC-EGFF-Fe3O4) have been investigated. In order to remove organic compounds and to improve the reduction of chemical oxygen demand (COD), the raw EGFF was thoroughly washed with boiling distilled water instead of using room temperature distilled water. The preparation conditions of the adsorbents were optimized using response surface methodology (RSM)-face centered composite design (FCCD). The effects of pH, shaking speed, adsorbent dosage, initial dye concentration, contact time and temperature on color removal and COD reduction were studied and optimized. The results showed that the AC-EGFF-Fe3O4 has higher BET surface area and was more effective in terms of color removal and COD reduction of RB dye than the raw EGFF, A-EGFF, and AC-EGFF. The optimal adsorption conditions for AC-EGFF-Fe3O4 were obtained at 550 mg/L initial RB dye concentration, pH 8.49, 28.43 oC, 27 min, and 0.97 g adsorbent with 98.63 % color removal and 98.06 % CO reduction. The BET surface area for AC-EGFF-Fe3O4 was 797.68 m2/g which was higher than that of raw EGFF (13.80 m2/g), A-EGFF (31.67 m2/g), and AC-EGFF (555.53 m2/g). Adsorption isotherms, kinetics and thermodynamics for the adsorption of RB dye were determined. The equilibrium data for the adsorption of RB dye using AC-EGFF-Fe3O4 was best represented by Langmuir isotherm model, followed by Freundlich isotherm model. The adsorption kinetics was found to follow the pseudo-second-order kinetic model. The thermodynamic study showed that the adsorption process was endothermic. Spent AC-EGFF-Fe3O4 can be effectively regenerated using 0.1 M NaOH. The results indicated that modified agricultural waste EGFF is suitable to be used as adsorbent for the treatment of dye wastewater. | en_US |
| dc.identifier.uri | http://hdl.handle.net/123456789/3342 | |
| dc.subject | Characterization Of Modified Oil Palm (Elaeis Guineensis) Frond | en_US |
| dc.subject | For The Removal Of Rhodamine B In Wastewater | en_US |
| dc.title | Preparation And Characterization Of Modified Oil Palm (Elaeis Guineensis) Frond For The Removal Of Rhodamine B In Wastewater | en_US |
| dc.type | Thesis | en_US |
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