Research Article
Biosorption of Fe(II) and Mn(II) Ions from Aqueous Solution by Rice Husk Ash
Table 1
XRF analysis on the RHA before and after adsorption of Fe(II) and Mn(II) (%).
| Element | Unloaded biomass | Fe(II)-loaded biomass | Mn(II)-loaded biomass |
| O | 26.650 | 24.530 | 24.183 | Na | 0.040 | — | — | Mg | 0.301 | 0.090 | 0.057 | Al | 0.132 | 0.014 | 0.012 | Si | 29.433 | 27.538 | 27.276 | P | 0.511 | 0.054 | 0.054 | S | 0.102 | 0.154 | 0.069 | Cl | 0.190 | 0.342 | 0.097 | K | 2.123 | 0.338 | 0.290 | Ca | 0.942 | 0.061 | 0.048 | Mn | 0.183 | 0.187 | 0.293 | Zn | 0.011 | 0.002 | 0.003 | Fe | — | 0.175 | 0.013 | Cu | — | 0.003 | 0.004 |
|
|