The dual role of potassium ferrate in promoting primary sludge hydrolysis and acidogenesis in anaerobic fermentation - Ling Wang; Chang Liu; Xing Fan; Thangavel Sangeetha; Kailing Pan; Xuejun Bi; Wenzong Liu; Xiaoqiu Lin; Xiaodong Wang; Aijie Wang; Heliang Pang (Chemical Engineering Journal, 2023)