Study to evaluate the effect of ultra-sonication prior to microwave disintegration on anaerobic digestion of dairy sludge

The aim of this work is to study the effect of ultra-sonic pretreatment effeminacy prior to microwave (MW) irradiation on dairy sludge characterization and biogas yield. Pretreatment experiments were performed as batch process with 250 mL of sludge placed in ultrasonication and followed by MW irradiation. Results revealed in higher trend of soluble chemical oxygen demand (SCOD) and dissolved organic carbon (DOC), both, are considered as index for evaluating the efficiency of sludge solubilization. However, further investigation is needed to determine the potential enhancement of methane production after this combined process