Decontamination Efficiency of Phenylamine using Foam coupled Acidic Spray Wang Shouzhong, Zhou Zhen, Zhang Tong, Fang Xiaojun and Miao Chaoyang E3S Web Conf., 143 (2020) 02008 Published online: 24 January 2020 DOI: 10.1051/e3sconf/202014302008