Abstract
This paper deals with removal of copper ions from solution by raw rice husk (RRH) and expanding rice husk (ERH). Different column design parameters like bed depth, flow rate and initial copper concentration were investigated. It was found that the equilibrium uptake (qeq(exp)) of the ERH and RRH increased with increase in initial copper concentration but decreased with increase in flow rate and bed depth, respectively. The higher adsorption capacity and longer breakthrough time were observed for ERH in comparison with RRH, under the same conditions. Compared to coconut-shell activated carbon (C-AC), ERH was also found more effective in removing Cu2+. 0.01molL−1 HCl solution was used for desorption of column which was prior to absorb copper ion, and 0.01molL−1 NaOH solution was used for re-activation. Column regeneration and reuse studies were conducted for adsorption–desorption cycle.
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.
