You could scrub it with water. 9.4g dissolves in 100ml of water to saturation, so for 4 lbs will saturate about 40 lbs or about 5 gallons of water. You don't want to bring it to saturation though as its exothermic.

I'd say, dissolve into 55 gallon drum full of water using aquarium aerator piece. Tap into refrigerant using a piercing valve. You may want to include a check valve, so at the end, the system doesn't suck water in.