Abstract
This study focuses on the removal of Mn(II) ions from aqueous solution using esterified saw dust. Most studies report single metal solutions; however, in practice the presence of only a single component in waste waters is highly unlikely. Keeping this in view, binary metal adsorption studies have been undertaken to investigate the effect of Fe(II) on the removal of Mn(II). Succinic anhydride has been used for the esterification of saw dust which has been characterised using proximate and Fourier transform infrared spectroscopy analyses. The effect of parameters such as metal ion concentration, time, pH, particle size of adsorbent and temperature on adsorption has been studied. Results obtained at optimum conditions (concentration 300 mg/L, pH 5 and time 150 min) have been subjected to isotherm analyses which show that adsorption is monolayer and physical in nature. Kinetic studies reveal that the process follows first-order kinetics, and intra-particle diffusion also occurs but it is not the rate-determining step. Thermodynamic studies indicate the adsorption process to be endothermic and spontaneous in nature. The Langmuir competitive model was applied to binary sorption to analyse the nature of competition among Mn–Fe ions, which shows that the adsorption of Mn(II) was supressed by the presence of Fe(II) ions.
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 callDisclaimer: 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.
