Rustiah, W., and D. Arisanti. “Lead (Pb) Reduction Efficiency in Used Lubricating Oil in Ship Using The Acid Clay Treatment Method: Perspective of Environmental Pollution Control at Paotere Port, South Sulawesi, Indonesia”. Al-Kimia, Vol. 10, no. 2, Dec. 2022, doi:10.24252/al-kimia.v10i2.32560.