Enhancing anaerobic digestion using free nitrous acid: Identifying the optimal pre-treatment condition in continuous operation

Angelica Guerrero Calderon, Haoran Duan, Xiaoguang Chen, Ziping Wu, Wenbo Yu, Carlos E. Silva, Yijing Li, Sohan Shrestha, Zhiyao Wang, Jurg Keller, Zhongwei Chen, Zhiguo Yuan, Shihu Hu