Production of Biogas from Water Hyacinth with Addition of Cow Dung as Inoculum Using a Plug Flow Anaerobic Reactor - Soeprijanto Soeprijanto; Rakhmat Asrie Wibowo N; Dinal Izzati; Wulan Maghfiro; Risqy Rohmawati (Prosiding Seminar Nasional Teknik Kimia "Kejuangan", 2019)