Abstract
In this study, the potential of oil palm (Elaeis guineensis) leaves (OPL) to remove methylene blue (MB) from aqueous solution was investigated. The adsorption of MB onto OPL was optimized using response surface methodology (RSM) based on a four-variable face-centered central composite design (FCCCD) to determine the effect of adsorbent dosage (0.25–2.5g/L), initial pH (2–8), initial MB concentration (50–400mg/L) and temperature (30–70°C) on the adsorption process. The optimum conditions for the adsorption system were found as follows: adsorbent dosage of 2.22g/L, initial pH of 6, initial MB concentration of 259mg/L and temperature of 53°C; with MB removal of 88.72%. The experimental data best fits the Freundlich isotherm model and followed the pseudo-second-order kinetic model. At temperature range of 30–55°C, the adsorption process was found to be endothermic with increase in degree of spontaneity as the temperature increases. The characterization results revealed that the porous surface structure and functional groups of OPL play an important role in the adsorption of MB onto OPL.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Taiwan Institute of Chemical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
