All Issues
Preparation and characterization of activated carbon from spent coffee grounds using NaOH and KCl as activating agents
†
Author : S. Meshram, D. Katiyar, T. Asha, G. P. Dewangan, A. N. Joshi and R. S. Thakur*
DOWNLOAD (604)
ABSTRACT
Activated carbons were prepared by double stage activation method using spent coffee grounds (SCG) as precursor. The process involved impregnation of SCG with NaOH or KCl followed by heat treatment. Proximate analysis of raw SCG was done to investigate moisture, ash, volatile matter and fixed carbon content. Characterization of the adsorbents was done through FTIR, BET and XRD analyses. Activated carbon (AC) prepared using NaOH as activating agent was used to adsorb lead (Pb(II)) from an aqueous solution. Adsorption study result showed that 98% Pb(II) could be removed with the adsorbent dose of 20 g/L and 90 min of contact time from the aqueous solution initially containing 400 mg/L of Pb(II).
KEYWORD
Activated carbon, double stage activation, spent coffee grounds, lead