Removal of volatile organic sulphur compounds by solar advanced oxidation technologies and bioprocesses oxidation treatment of volatile organic sulphur compounds

Abstract

The degradations of volatile organic sulfur compounds (VOSCs) by advanced oxidation technology, solar advanced oxidation technology, biological treatment, and the combination of solar advanced oxidation technology and biological treatment were studied in a pilot plant. Three volatile organic sulfur compounds (Methanthiol (MESH), Dimethyl sulfifde (Me2S) and H2S) were selected as model compounds. Solar advanced oxidation technologies (AOTs) processes eliminate more than 65% of VOSCs under high residence time. VOSCs were oxidized to a very low level ≤ 0.2 μg/L in less than 60 min by solar-AOTs and ozone. A significant VOSCs elimination was achieved by solar advanced oxidation in combination with biological treatment. Removal efficiencies up to 95.7 % and 94.7 % of MSH and Me2S were achieved by combined processes at very low HRT for bioprocess (0.5 day). The results obtained from the combined processes (Solar-AOTs & bioprocess) confirm the suitability of solar AOTs as pre-treatment for VOSCs. Copyright © American Institute of Chemical Engineers. All rights reserved.