Copper and cadmium removal by Mn oxide-coated granular activated carbonOriginal Research Article
Separation and Purification Technology, Volume 45, Issue 1, September 2005, Pages 61-67
Huan-Jung Fan, Paul R. Anderson
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Abstract
Mn oxide-coated granular activated carbon (MnTOG) was prepared by coating Mn oxide onto granular activated carbon (TOG). The Cu(II) and Cd(II) adsorption capacities of granular activated carbon were significantly improved by Mn oxide coating. Mn oxide, TOG and MnTOG had pHzpc about 6, 8.5, and 5.8, respectively. From multiple Cu(II) adsorption/regeneration cycle tests, MnTOG can be regenerated and reused through at least six cycles. More than 70% of the adsorbed Cu(II) was recovered at the end of six adsorption cycles. MnTOG has the ability to remove Cu(II) and Cd(II) to trace levels (