Abstract
The permissible limit of fluoride level in ground water is 1.5mg/L and if it is exceeded, it causes fluorosis and about 3.2% people have been affected by this disease worldwide. The potential of ferric hydroxide and activated alumina impregnated sawdust (SFAA) for fluoride removal from groundwater by fixed bed study is presented. The dynamic removal of fluoride in the packed bed column has been studied as a function of particle size, concentration and flow rate. The adsorption of fluoride by the adsorbent increased with decrease in particle size of SFAA, flow rate and initial fluoride concentration. The studies show that SFAA is efficient at flow rate of 0.5mL/min for initial fluoride concentration of 12mg/L and average particle size of 0.082mm. To predict the breakthrough and to determine the column parameters for process design, four breakthrough models viz., Thomas, Yoon-Nelson, Bohart-Adam and Clark model were applied. Among these models, the models proposed by Thomas and Clark give the most satisfactory fit, which indicates the adsorption behaviour follows second order reversible reaction kinetics. Logistic model also tested for the non linear regression approach.
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.
