Clement Oguche Ataguba, and Isobel Brink. “A Comparison of Oil and Grease Removal from Automobile Workshop Stormwater Runoff Using Gravel, Granular Activated Carbon, Rice Husk and Conventional Oil and Grease (O&G) Trap”. Water SA 48, no. 1 January (January 26, 2022). Accessed April 20, 2024. https://watersa.net/article/view/13132.