Performance Evaluation of Palm Kernel Shell Adsorbents for the Removal of Phosphorus from WastewaterReportar como inadecuado




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Studies were carried out on Palm Kernel Shell, an agricultural waste available in large quantity in Nigeria, to evaluate its ability to remove phosphorus from wastewater. The adsorbents, which were prepared from Palm Kernel Shells PKN, were characterized using Fourier Transform Infrared FT-IR, Energy dispersive X-ray EDX and Scanning Electron Microscopy SEM. Batch mode experiments were conducted to study the effects of adsorbent dosage and contact time on phosphorus adsorption. Equilibrium and Kinetic studies of the process were also carried out. Results obtained show that, FT-IR spectrum of the activated carbon displays a number of absorption peaks, reflecting the complex bio-mass structure and a variety of functional groups which explains its improved adsorption behaviour on the colloidal particles. SEM shows the spherical shape of the carbon particles with a wide range of sizes, EDX indicated the constituent elements in the adsorbent in which C and O were found to be the most abundant. Equilibrium data fitted well to the Freundlick and Langmuir models but the data were best described by Langmuir Isotherm model at the temperature of 313 K. Pseudo second order best described the kinetics of the adsorption process. Removal efficiency E% of 97% was attained within 120 minutes at 50 g-l adsorbent concentration, pH6 and 0.2mm particle size of the adsorbent.

KEYWORDS

Phosphorus, Adsorbent, Activated Carbon, Isotherms, Kinetics, Equilibrium, Adsorption

Cite this paper

Babayemi, A. 2017 Performance Evaluation of Palm Kernel Shell Adsorbents for the Removal of Phosphorus from Wastewater. Advances in Chemical Engineering and Science, 7, 215-227. doi: 10.4236-aces.2017.72016.





Autor: Akinpelu Kamoru Babayemi

Fuente: http://www.scirp.org/



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