Adsorption Behavior of Methylene Blue on Ethylenediaminetetraacetic Dianhydride Modified Neem (Azadirachta indica) Leaf Powder

M.A.K.M. Hanafiah; Mardhiah Ismail; Wan Saime Wan Ngah; Wan Khaima Azira Wan Mat Khalir; Haslizaidi Zakaria

doi:10.4028/www.scientific.net/KEM.594-595.270

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 594-595Adsorption Behavior of Methylene Blue on...

Adsorption Behavior of Methylene Blue on Ethylenediaminetetraacetic Dianhydride Modified Neem (Azadirachta indica) Leaf Powder

Abstract:

Neem (Azadirachta indica) leaf powder was modified using a chelating agent, ethylenediaminetetaraacetic dianhydride (EDTAD) and the adsorption performance in removing methylene blue (MB) was investigated under batch mode. The EDTAD modified neem leaf powder (ENLP) was characterized by spectroscopic technique and elemental analysis. Fourier transform infrared (FTIR) spectra indicated that the ROH, RCOOR, RCOO^- and RNH₂ groups were involved in the removal of MB. The maximum adsorption capacity calculated from the Langmuir isotherm model was 178.57 mg/g at 318 K. Adsorption kinetic was found to be fitted well with the pseudo-first-order model. This study suggests that ENLP can be an attractive adsorbent for MB removal from diluted industrial wastewater.

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Key Engineering Materials (Volumes 594-595)

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270-274

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.594-595.270

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Online since:

December 2013

Authors:

M.A.K.M. Hanafiah, Mardhiah Ismail, Wan Saime Wan Ngah, Wan Khaima Azira Wan Mat Khalir, Haslizaidi Zakaria

Keywords:

Adsorption, Isotherm, Kinetic, Mechanism, Neem Leaf Powder

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