*Corresponding author: badruszaman2@gmail.com Decomposition of food waste using bulking agent and bio-drying technology Wiharyanto Oktiawan1, Mochtar Hadiwidodo1, Ika Bagus Priyambada1, Purwono Purwono 2* 1Department of Environmental Engineering, Faculty of Engineering, Diponegoro University, Semarang - Indonesia