Comparative sorption study of dissolved manganese and cobalt ions onto alginate beads (ABs) and thermally activated nano-carbon beads (NCBs) was performed. Acidic functionalities dominate over sorbent surface. Elemental analysis confirmed that divalent calcium replacement with heavy metal ions might be a possible sorption mechanism. Optimum metal uptake was observed at pH 8. Most of the metal ions (80-92%) were sorbed within 4. h, followed by a slower sorption stage. Mn(II) and Co(II) recovery was greater than 99% with 0.1. N HCl, and NCB could be repeatedly utilized for Mn(II) and Co(II) sorption with negligible loss in sorption capacity.
Bibliographical noteFunding Information:
This work was supported by the Global Research Laboratory Project (2010-00248), the Eco-Innovation project (Global-Top project) of the Korea Ministry of the Environment, and the Small & Medium Business Administration (SMBA) under grant C0103527 through Academic-Industrial Common Technology Development Project.
© 2014 The Korean Society of Industrial and Engineering Chemistry.
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)