inuakena

Has anyone tried acidifying their wash with propionic acid to try and capture some of that Caribean magic? It's a powerfully smelly acid, but the pKa is only 4.87.

Sounds good. I'll watch this space!

Wondering if you got any further on this nab. I know Kona Brewing is putting in a small digester at their new brewery on the Big Island, but their wastewater volumes are larger, of course. I've worked on treatment projects for vinasse both digested and undigested using membranes, but only as the result of various regulatory actions. The bigger distilleries like Serralles and Demerara Distillers digest their vinasse, which makes up more than half of their power to the stills, which is pretty awesome. Angostura put one in last year but only because the local WWTP couldn't handle their BOD/COD anymore. In Brazil, the vinasse mostly goes back into the fields, but the phenols build up over time and eventually attenuate sugar production in the cane, so more are looking at treatment options there as well.