调查了在不同的pH条件下,Sb(V)在针铁矿表面的吸附与解吸以及竞争性离子与胡敏酸存在的条件下Sb(V)在针铁矿表面的吸附行为。pH对sb(V)在针铁矿表面的吸附行为影响显著,pH3—10范围内,随介质pH的升高,Sb(V)的吸附减弱;Sb(V)的解吸量随吸附反应pH值的增加而增加。pH6~8.5的范围内,胡敏酸的存在对Sb(V)在针铁矿表面的吸附有抑制作用;P0产的存在对Sb(V)在针铁矿表面的吸附有明显的抑制作用。
Sb (V) adsorption/desorption on goethite and influence of environmental parameters such as pH, competitive ions and humic acid was examined. Data indicated that adsorption was affected strongly by pH. Sb (V) adsorption decreased with increasing pH from 3 to 10. The magnitude of Sb (V) desorption was dependent on the original suspension pH and Sb (V) desorption showed a increase with increasing original pH. Humic acid inhibited the adsorption of Sb (V) on goethite at the range of pH 6 - 8.5. The presence of PO4^3- significantly inhibited Sb (V) adsorption on goethite.