Laksono, S., Butar, R., & Adityosulindro, S. (2024). Investigation of direct Coagulation-Flocculation-Ultrafiltration (CFU) at lab-scale constant pressure and flux operation of copper removal. Sustinere: Journal of Environment and Sustainability, 8(2), 138–149. https://doi.org/10.22515/sustinere.jes.v8i2.377