Preparation of activated carbon from banana peel waste for reducing air pollutant from motorcycle mufflerAchmad Chafidz, Widi Astuti, Dhoni Hartanto, Aulia Septiani Mutia and Purtiah Rantau SariMATEC Web Conf., 154 (2018) 01021DOI: https://doi.org/10.1051/matecconf/201815401021