The combination of demulsification-flotation processes for separating dissolved oil in gum-rosin industry wastewaterPrayitno, Sri Rulianah, Khalimatus Sa’diyah, Heny Dewajani and Rucita RamdhanaE3S Web Conf., 605 (2025) 03020DOI: https://doi.org/10.1051/e3sconf/202560503020