Sorption Kinetic Studies of Medical Grade Activated Carbon Prepared from Papaya Seeds | Zendy

Collin G. Joseph | Zendy; Mei P. Lee | Zendy

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Sorption Kinetic Studies of Medical Grade Activated Carbon Prepared from Papaya Seeds

Author(s) -

Collin G. Joseph,

Mei P. Lee

Publication year - 2008

Publication title -

modern applied science

Language(s) - English

Resource type - Journals

eISSN - 1913-1852

pISSN - 1913-1844

DOI - 10.5539/mas.v2n6p115

Subject(s) - sorption , activated carbon , methylene blue , adsorption , muffle furnace , kinetics , aqueous solution , chemistry , nuclear chemistry , langmuir adsorption model , kinetic energy , carbon fibers , materials science , organic chemistry , catalysis , physics , photocatalysis , calcination , quantum mechanics , composite number , composite material

The aim of this investigation was to determine the adsorption behavior and kinetics of methylene blue in aqueous solution on activated carbons prepared from papaya seeds by way of the two stage activation method in self-generated atmosphere using a muffle furnace. The optimised activated carbon, AK7, had a sorption kinetic that complied with the pseudo-second order kinetics and was fitted well to Langmuir isotherm model. The highest adsorption capacity of 97.09 mg g^-1was obtained when the samples (AK7) were subjected to activation temperature of 500^oC for 60 minutes with the percentage of methylene blue removal efficiency of 99.5%.

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