An effective adsorbent for arsenic removal was synthesized by hydrothermal treatment of waste glass powder (HGP), followed by loading iron(III) oxyhydorxide on the surface of waste glass powder (GP). The ?Si-O-H group was formed on the surface of GP and the specific surface area of GP powder was slightly increased after hydrothermal treatment. FeOOH was loaded on the surface of HGP by the hydrolysis of FeCl3. The formation conditions of FeOOH were also investigated. The ability of this new adsorbent for arsenic removal was tested. The results indicate that the highest arsenic removal efficiency is about 97% for 1 mg/L As(V) solution at pH 6 and keeping time 2h.