Biosorption of engine oil using rice husk in a filtration system by Aminuddin, Irfan Hafeez, Taufik, Siti Hajar, Puasa, Nurul Aini, Mohamed Radziff, Syahirah Batrisyia, Zamree, Nur Diyanah, Shaharudddin, Noor Azmi, Che Abdullah, Che Azurahanim, Rahman, Muhammad Fahdli, Azmi, Alyza Azzura, Ahmad, Siti Aqlima