Abstract
Anaerobic filter treatment of beet molasses distillery slops was carried out in laboratory and pilot scale reactors. During a one year operation period volumetric loadings of up to 50 kg VS m−3 d−1, corresponding to a hydraulic residence time of approx. 1 day, were achieved. The biogas yield was between 430 and 460 l kg VS−1 resulting in a gas productivity of between 13 and 20, 5 m3 m−3 d−1.