The potential of Sphagnum moss peat to adsorb oxyanions (As(III), As(V), Sb(III), Sb(V) and Se(VI)) from aqueous solution was studied in batch mode. For arsenic (both species) and selenium, the results were negative: moss peat is not able to retain these oxyanion. For antimony, the hydroxyl and carboxyl groups from the Sphagnum moss peat surface seems to be responsible for Sb uptake. Kinetic studies were conducted for both Sb(III) and Sb(V) and a fast uptake process was observed, equilibrium being achieved in about 2 hours. Equilibrium studies reveals considerable adsorbed amounts of Sb(III) and Sb(V).The experimental sorption capacity resulted for Sb(III) was around 3 mg/g and nearly 3.3 mg/g for Sb(V), at pH 2 and 23 ± 1ºC. The influence of pH (in the 2-8 range) is modest in case of Sb(III) and insignificant for Sb(V) sorption. Following the results, it is possible to conclude that Sphagnum moss peat could be used in ecological remediation of antimony contaminated aqueous solutions.