Optimization of Biogas Production by Solid State Anaerobic Digestion (SS-AD) Method from Water Hyacinth with Response Surface Methodology (RSM)Winardi Dwi Nugraha, Syafrudin, Aurelia Teresa Senduk, Hashfi Hawali Abdul Matin and BudiyonoE3S Web Conf., 73 (2018) 01016DOI: https://doi.org/10.1051/e3sconf/20187301016