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Batch and continuous processes were conducted to study the adsorption of methylene blue dye on to three adsorbent materials, commercial activated carbon, chemically activated corncob carbon with phosphoric acid and ion exchange resin (akualite). Batch processes were established to show the effects of solution pH, contact time, adsorbent dosage, agitation speed and initial dye concentration. Two isotherm models, Freundlich and Langmuir fitted with the experimental data found from batch processes, the Langmuir model fitted well than the Freundlich, with maximum adsorption capacities of 16.21, 30.95 and 77.52 mg/g and R2 of 0.952, 0.992 and 0.995 predicted by commercial activated carbon, corncob activated carbon akualite respectively.

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