As far as I can tell, it seems the hot water method is way faster to complete the process.
There's no way that the forced air can finish the process faster, because the Chlorine Dioxide is still generated at a lower % than with the hot water.
I've done two batches, and they complete in less than 5 minutes with the hot water bath. There's no way that any pump could make the process faster, unless a "Hot Air" pump was used. And that would heat the cold water in the collector.
And then, you would have to consider a good air filter, because I wouldn't want dust and air polutants aggregated to the gas mixture. I think Andreas method is hard to beat, and that's the method I will continue to use, because it "Just Works (tm)"
-Karl