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URN etd-0729111-102443 Statistics This thesis had been viewed 2462 times. Download 864 times. Author Guang Huei Chang Author's Email Address email@example.com Department Chemical Engineering Year 2010 Semester 2 Degree Master Type of Document Master's Thesis Language English Page Count 44 Title ADSORPTION OF BENZOIC ACID FROM AQUEOUS SOLUTION WITH ACTIVATED CARBON PREPARED FROM SPENT CHOPSTICKS Keyword equilibrium isotherm adsorption activated carbon kinetic model kinetic model activated carbon adsorption equilibrium isotherm Abstract Phenolic hydrocarbons such as benzoic acid are widely used in pharmaceutical, petrochemical, and other chemical manufacturing process. Benzoic acid in industrial wastewaters is difficult to be removed by biological treatment process. Adsorption process using activated carbon seems quite simple and cost-effective for such refractory organics removal. In this study, activated carbons were prepared by the pyrolysis of spent chopsticks impregnated by phosphoric acid. The adsorption behaviors of benzoic acid onto the activated carbons prepared under different conditions were compared. The adsorption kinetics and adsorption isotherms were measured and analyzed by different models. The results showed that the pseudo-second-order kinetic model and the Elovich model could fit the experimental adsorption kinetic data; both the Langmuir isotherm model and the Freundlich isotherm model could fit the adsorption equilibrium data. Advisor Committee Jia-Ming Chern - advisor
Files Date of Defense 2011-07-26 Date of Submission 2011-08-01