Preparation and application of EDTA-functionalized underutilized Adansonia digitata seed for removal of Cu(II) from aqueous solution
The application of ethylenediaminetetraacetic acid surface functionalized Adansonia digitata seed (EAD) from Nigeria was evaluated as a possible means of treating Cu contaminated water. The seed of A. digitata (AD) and EAD were characterized using Fourier Transform Infrared spectrometer, Thermogravi...
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Veröffentlicht in: | Sustainable environment research 2018-05, Vol.28 (3), p.111-120 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The application of ethylenediaminetetraacetic acid surface functionalized Adansonia digitata seed (EAD) from Nigeria was evaluated as a possible means of treating Cu contaminated water. The seed of A. digitata (AD) and EAD were characterized using Fourier Transform Infrared spectrometer, Thermogravimetric analysis, X-ray Diffraction analysis, Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Particle Size Dispersion (PSD), zeta potential and elemental analysis (CHNS/O analyzer). The kinetics studies revealed the adsorption of Cu(II) onto AD and EAD to follow pseudo-second order model which fitted well for Temkin and Freundlich isotherm. The adsorption was controlled by both intra-particle diffusion and liquid film diffusion with adsorption capacity of AD (33 mg g−1) higher than that of EAD (27 mg g−1). The PSD of AD and EAD was found to be mono-modal, the ΔGo values increased as the temperature increased in EAD unlike AD where the value was reduced as temperature increased. The present work showed A. digitata seed as a potential resource for treating Cu contaminated water. The present work also reveals that it is important and necessary to pretreat plant sourced materials before being used for wastewater treatment. |
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ISSN: | 2468-2039 2468-2039 |
DOI: | 10.1016/j.serj.2017.12.002 |