Report - 078 ' # '5& *#0 & 6Acid-treated coconut shell carbon Zn(II) 60.41 (Amuda et al, 2007) 3 5 Caladium bicolor Cd(II) 42.19 (Jnr et al, 2005) 4 - H3PO4-reated rice bran Ni(II) 102 (Zafar

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