Mohamad Ketar@Mokhtar NI, Harun H. Synthesis of Magnetic Biochar Derived from Oil Palm Frond for Waste Cooking Oil Treatment. peat [Internet]. 2021 Dec. 2 [cited 2024 May 3];2(2):116-2. Available from: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/944