Removal of odorous compounds emitted from a food-waste composting facility in Korea using a pilot-scale scrubber.

Monitoring and control of odorous compound emissions have been enforced by the Korean government since 2005. One of the point sources for these emissions was from food waste composting facilities. In this study, a pilot-scale scrubber installed in a composting facility was evaluated for its performance in the removal of malodorous compounds.

Performance evaluation of poly-urethane foam packed-bed chemical scrubber for the oxidative absorption of NH and HS gases.

The feasibility of open-pore polyurethane (PU) foam as packing material for wet chemical scrubber was tested for NH and HS removals. The foam is inexpensive, light-weight, highly porous (low pressure drop) and provides large surface area per unit volume, which are desirable properties for enhanced gas/liquid mass transfer. Conventional HCl/HOCl (for NH) and NaOH/NaOCl (for HS) scrubbing solutions were used to absorb and oxidize the gases.