Methane fermentation as method for utilisation of the glycerol fraction from biodiesel production

摘要

Glycerol fraction from transesterification of vegetable oils was added to sewage sludge and fermented to biogas under anaerobic conditions. The kinetics of decompn. of glycerol and fatty acid Me esters during the fermentation was studied. The addn. of glycerol resulted in an increase in pH of the fermentation medium but pH decreased during the process.