This report shows research results of adsorb ability of Ni(II) and Mn(II) of modified iron ore as adsorbent desiccant. Experiments were conducted with the following parameters: the mass of absorbent desiccant: 0.5g
the volume of Ni(II) or Mn(II) solution: 25mL
shaking speed: 200 rounds/minute
time to reach adsorption equilibrium of both above ion were 120 minutes at room temperature (25+/- 1oC). The best adsorption pH for Ni(II) was 4 - 5, for Mn(II) was 3.0 - 4.0. The result shows that, according to the adsorption isothermal model Langmuir, the maximum adsorption capacity of modification iron ore for Ni(II) was 3.573 mg/g and for Mn(II) was 4.918 mg/g. Using modification iron ore was adsorption of real water containing of Ni(II) and Mn (II). The result shows that, after two adsorption of Ni (II), Mn (II) concentrations has standard by VN regulations 2009/ Ministry of Natural Resources and Environment.