Agrowaste Based Carbon Adsorbent For Dyes Removal: Equilibrium, Kinetic And Thermodynamic Studies

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dc.contributor.authorNga, Eng Yew
dc.date.accessioned2016-11-21T07:42:46Z
dc.date.available2016-11-21T07:42:46Z
dc.date.issued2014-09
dc.description.abstractThe aim of this work is to investigate the feasibility of peanut shell based activated carbon (PSAC) and coconut peduncle based activated carbon (CPAC) for methylene blue (MB) and remazol brilliant blue R (RBBR) removal from aqueous solution. Physiochemical activation consisting of potassium hydroxide (KOH) impregnation and carbon dioxide (CO2) gasification were used to prepare PSAC and CPAC. The optimum preparation conditions were 653oC, 0.75 hour and impregnation ratio (IR) of 1 for PSAC whereas 673oC, 0.75 hour and IR of 0.85 for CPAC. The effect of initial dye concentration (50 – 500 mg/L), contact time (0 - 24 hour), solution temperature (30 - 60°C) and pH of solution (3–11) onto dyes removal were evaluated. Freundlich model was found best suited for MB and RBBR adsorption for PSAC and CPAC. Dyes adsorption with PSAC and CPAC were best suited the pseudo-second-order kinetic model and pseudo-first-order kinetic model, respectively. The activation energy for all adsorption processes showed values lower than 40 kJ/mol indicating the physisorption mechanism in adsorption.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/3134
dc.language.isoenen_US
dc.publisherUniversiti Sains Malaysiaen_US
dc.subjectPeanut shell based activated carbonen_US
dc.subjectCoconut peduncle based activated carbonen_US
dc.titleAgrowaste Based Carbon Adsorbent For Dyes Removal: Equilibrium, Kinetic And Thermodynamic Studiesen_US
dc.typeThesisen_US
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