Habeeb SA, Abdul Latiff AA, Daud Z, Ahmad Z. Sludge Bed Granules’ Growth in the HUASB Reactor Treating High Strength Industrial Wastewater. IJIE. 2014;6(1). Accessed July 22, 2026. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/378