Gumilar, A., Syafila, M., Handajani, M., Anggamulia, I. and Hidayat, S. (2022) “Wastewater Processing Technology Opportunities for Palm Oil Mill Effluent as a Raw Material for Renewable Bioenergy”, Journal of Engineering and Technological Sciences, 54(3), p. 220313. doi: 10.5614/j.eng.technol.sci.2022.54.3.13.