“Ammonia Removal from Wastewater Using ZnO-Modified Ceratophyllum As a Low-Cost Eco-Friendly Biosorbent”. Bilad Alrafidain Journal for Engineering Science and Technology, vol. 1, no. 1, Mar. 2026, pp. 22-28, https://doi.org/10.56990//bajest/2026.ISCES.04.