Biochar accelerates methane production efficiency from Baijiu wastewater: Some viewpoints considering direct interspecies electron transfer - Yun He; Shilei Wang; Caihong Shen; Zhi Wang; Yiyang Liu; Xingyao Meng; Xiaoyong Li; Xiaoling Zhao; Jinmeng Chen; Jingliang Xu; Jiadong Yu; Yafan Cai; et al. (Chemical Engineering Journal, 2024)