Anaerobe Monovergärung von Molke


Acid whey is a dairy byproduct that is suitable for anaerobic conversion
to valuable biogas. Treating raw acid whey in a two-stage anaerobic
digester unfortunately results in mineral precipitates that inhibit the
active biomass. To prevent this, we used a precipitation reactor between
stages, after adjusting temperature and pH. We achieved an average
reduction of 95.3 percent of chemical oxygen demand and produced the
equivalent of 21.6 liters of fossil fuel energy in biogas (192 kWh) for one
cubic meter of acid whey.