Mtana, H.M. et al. 2024. Effectiveness of Natural Coagulants in Purification of Industrial Wastewater: A case of Cactus Pads and Watermelon Seeds. Tanzania Journal of Engineering and Technology. 43, 4 (Dec. 2024), 133–152. DOI:https://doi.org/10.52339/tjet.v43i4.985.