Adsorptive removal of arsenic in saturated sand filter containing amended adsorbents

- Arsenic removal performance of SSFs containing HBC and Fe-HBC (50% w/w) is studied.
- Over 99% and 98% arsenic removals were achieved in SSF(a) and SSF(b) under oxic-environment.
- Two steps in situ mechanism is proposed to convert As(III) into As(V) and subsequent adsorption.
- Low levels of influent co-occurring ions did not significantly interfered arsenic removal.
- Filter with low-cost adsorbents could be proposed as feasible and efficient method for arsenic removal.