Raharjo, Sonya Hakim, et al. “Optimization of Rotation Speed, Disc Diameter, and Lighting Time in Batik Waste Treatment Using Rotary Algae Biofilm Reactor (RABR) With Ulva Sp”. Eksergi, vol. 22, no. 3, Aug. 2025, pp. 175-8, doi:10.31315/eksergi.v22i3.15084.