Abstract
This study reports the removal of Ni(II) onto boiled sunflower head (BSH) and formaldehyde sunflower head (FSH) adsorbents by batch technique. The adsorbents were characterized by Fourier transform infrared spectrometer (FTIR), scanning electron microscopy (SEM), and energy dispersive X-ray (EDX) analysis. The results showed that Ni(II) adsorption was dependent on process operating conditions including pH of the solution, adsorbent dosage, temperature, and initial Ni(II) ion concentration in the solution. The optimum pH for Ni(II) was 6.0. Maximum nickel adsorption was 65.5 and 75.9%, respectively, by BSH and FSH at adsorbent dose = 20.0 g/L, initial Ni(II) concentration = 100 mg/L, temperature = 25 ± 1°C. Langmuir and Freundlich isotherm models were used to analyze the equilibrium adsorption data. Freundlich isotherm fitted the data well with R2 values ##xgt;0.99 for both the adsorbents. The results also showed that pseudo-second-order kinetic model correlated well with the adsorption data with R2 values ##xgt;0.99 for both the adsorbents.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Similar Papers
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.