Ultrasonic-assisted hypochlorite activation accelerated volatile fatty acids production during sewage sludge fermentation: Critical insights on solubilization/hydrolysis stages and microbial traits - Rui Zhu; Shanshan Zhao; Chenlu Ju; Qing Yang; Chengcheng Cui; Lijuan Wu; Min Wang; Leiyu Feng; Yang Wu (Bioresource Technology, 2023)