Abstract

E. Porselvi¹ and P. Krishnamoorthy²

Activated carbon prepared fromAsadiractaIndica (neem)Seed Hull (AIH)was used for removal of Rhodamine-B (RDB) dye fromaqueous solutions. The process was studied as a function of contact time, adsorbent dose andpH. Adsorption process was attained to the equilibrium within 90 min for initial dye concentrations of 80 mg /l. pH 5 was optimum condition for adsorption of dye at room temperature, and the maximum dye removal at that pH was 83.56 %. The isotherm data could be well described via Langmuir equation andFreundlichequations.Kinetic studies revealed that the experimental data correlated well with pseudo second-order model

Adsorption; Isotherm; Kinetic; Rhodamine-B; Activated Charcoal

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