Preparation and characterization of soybean straw activated carbon for natural gas storageYuliusman, Nasruddin, Yugo WidhiNugroho, Hizba IlmiNaf’an and Jervis SintoE3S Web Conf., 67 (2018) 03019DOI: https://doi.org/10.1051/e3sconf/20186703019