1. School of Postgraduate Studies, Diponegoro University, Jl. Imam Bardjo SH, Pleburan, Semarang, 50241, Indonesia
2. Department of Chemical Engineering, Institut Teknologi Indonesia, Jl. Raya Puspitek Serpong, South Tangerang, 15320, Indonesia
3. Center of Biomass and Renewable Energy (CBIORE), Diponegoro University, Indonesia
4. Department of Chemistry, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia