Stefanescu, MihaiMihaiStefanescuBumbac, CostelCostelBumbacDinu, Laurentiu RazvanLaurentiu RazvanDinuCosma, CristianaCristianaCosmaPatroescu, Viorel IonViorel IonPatroescu2021-07-022021-07-022018http://hdl.handle.net/123456789/1758Editia XVII- PROINVENT 2019, 20-22.03.2019, Universitatea Tehnica Cluj Napoca, pp. 141, 2019enCombined ultrasonic and alkaline pretreatment method of wastewater treatment plant sludge for the improvement of biogas production by anaerobic fermentationconference poster