Sewage sludge ash-derived materials for HS removal from a landfill biogas.

HS removal is a key step for biogas cleaning because this component can lead to premature corrosion of the equipment and its cleaning has a significant cost. The aim of the present work was to assess the use of sewage sludge derived ash (SSA)-materials for HS removal from a landfill biogas. SSA and mixtures made with SSA, activated carbon (AC) and sand were tested for HS removal.