Pretreated aluminium dross waste as a source of inexpensive alumina-spinel composite ceramic hollow fibre membrane for pretreatment of oily saline produced water by Aziz, Mohd Haiqal Abd, Othman, Mohd Hafiz Dzarfan, Hashim, Nur Awanis, Rahman, Mukhlis A., Jaafar, Juhana, Hubadillah, Siti Khadijah, Tai, Zhong Sheng