Abstract
ABSTRACT The aim of the present study was to prepare the modified magnetic activated carbon from sawdust (AC/Fe3O4@SiO2-APTMS) as a novel adsorbent for efficient removal of humic acid (HA) from aqueous solutions. The adsorbent was characterised by BET, SEM, FTIR, VSM, and EDS analysis. The optimal values of independent variables were determined using Box-Behnken design based on the response surface methodology (RSM). The maximum HA adsorption of 97.85% was obtained at optimal conditions pH 3, the adsorbent dose 2 g/L, and the contact time 25 min. Analysis of the adsorption data by isothermal, kinetic, and thermodynamic models showed that the adsorption data followed the Langmuir isotherm (R2 = 0.9850) and the pseudo-second-order kinetic model (R2 = 0.9999). The adsorption process was spontaneous and endothermic. The adsorbent regeneration proved high HA removal efficiency after 4 adsorption cycles. The humic acid adsorption behaviour of the adsorbent supports its performance to remove organic contaminants from aqueous solutions.
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: International Journal of Environmental Analytical Chemistry
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.
