Evaluation and techno-economic analysis of packed bed scrubber for ammonia recovery from drying fumes produced during the thermal drying of sewage sludgeAli Saud, Jouni Havukainen, Mika Mänttäri and Mika HorttanainenE3S Web Conf., 191 (2020) 03001DOI: https://doi.org/10.1051/e3sconf/202019103001