Safitri, Rizki Tri, Lisa Adhani, and Andi Nuraliyah. 2024. “Pengaruh Karbon Aktif Sekam Padi Terhadap Penyerapan Pb (timbal) Dalam Pelumas Bekas Kendaraan Bermotor”. Journal of Innovation Materials, Energy, and Sustainable Engineering 1 (2). https://doi.org/10.61511/jimese.v1i2.2024.555.