Degesch Phosphine Scrubber:

Are phosphine emissions regulated in your state?

Is your grain storage or warehouse located in a populated area where residents are likely to complain during aeration of the fumigated structure?

Degesch America has developed an adsorption system or "Scrubber"* to remove phosphine from air streams which may solve your emission problems. The scrubber catalytically oxidizes phosphine, at low temperatures, to produce water and nonvolatile phosphates, thereby freeing up additional sites on the special adsorbent to remove more phosphine. The scrubber operates by recycling air from within the fumigated structure, through the adsorbent and back into the structure until the phosphine levels have been reduced to a satisfactory level. This generally requires about 20 to 30 hours. One or more scrubbers may be installed on a structure, depending on its size.

When phosphine gas level readings indicate that the scrubber is saturated, the adsorption columns may be removed and returned to Degesch America for regeneration.

The scrubber may also be used in conjunction with the J-SystemŽ Low Air Flow Re-circulation Method** on grain storages. At the end of the fumigation period, a valve is switched on the gas distribution piping to reroute the air stream through the scrubber column. Scrubbing is terminated when phosphine concentrations within the storage have been sufficiently reduced, generally in about 20 hours. The air flow may then be diverted to discharge directly to the atmosphere to complete the aeration rather than recirculating back into the storage.

See your Degesch America representative for more information.