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Adsorptive removal of Methylene blue using Azadirachta Indica (Neem) Leaf

Author Affiliations

  • 1Auditor – Social Compliance, TGT Asia Sourcing, BANGLADESH

Int. Res. J. Environment Sci., Volume 5, Issue (1), Pages 21-24, January,22 (2016)

Abstract

The use of eco friendly and low cost adsorbents were studied as an alternative substitution of activated carbon for removal of dyes from wastewater. Laboratory investigation was done to identify the effectiveness of Azadirecta indica leaves (Neem) to remove methylene blue from aqueous solution. Neem leaves were dried in a thermostatic oven at 105oC for 24 hours. These leaves ground into fine powder with 10-15um mesh size. 1 gm/ 10 lt, 2 gm/ 10 lt, 3 gm/ 10 lt, 4 gm/ 10 lt and 5 gm/ 10 lt working solution were prepared by serial dilution of stock solution. It was noted that percentage of adsorption increased from 43.2% to 80.1% with increased amount of adsorbent. Langmuir adsorption isotherm was applied and R2 value was calculated which shows, Langmuir adsorption is a good fit for the experimental data. The result shows that the 80.1 % colour removal efficiency was achieved at the dose of 5 gm/10lt.

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