Karaagac, Sakine UgurluAbujazar, Mohammed Shadi S.Kopan, MahmutAbu Amr, Salem S.Alazaiza, Motasem Y. D.2024-09-292024-09-2920221944-39941944-3986https://doi.org/10.5004/dwt.2022.29036https://hdl.handle.net/20.500.14619/7678The use of olive seed powder as a plant-based natural coagulant in treating iron and steel factory wastewater was studied. The concentrations of chemical oxygen demand (COD), total suspended solids (TSS), ammonia-nitrogen (NH3-N), manganese (Mn), iron (Fe), zinc (Zn), aluminum (Al), and nickel (Ni) in effluent wastewater were investigated. Coagulation experiments on the effects of iron and steel factory wastewater, pH, and olive seed powder dosage on coagulation efficacy were conducted using an orbital shaker and a flocculation device. The maximum removal percentages of COD, TSS, NH3-N, Mn, Fe, Zn, Al, and Ni by olive seeds powder were 86.3%, 99%, 72.4%, 80.9%, 91.5%, 92.6%, 73.7%, and 84.3% for effluent at natural pH 8 using a 5 g/L dosage, respectively. The Fourier-transform infrared spectroscopy study showed the presence of several functional groups involved in the coagulation process. It is possible to argue that olive seed powder has enormous potential as a plant-based natural coagulant for wastewater treatment and that it might be used to treat wastewater from iron and steel factories.eninfo:eu-repo/semantics/closedAccessIndustrial wastewaterNatural coagulantHeavy metalsRemoval efficiencyArticle10.5004/dwt.2022.290362-s2.0-85146124919176Q3169277WOS:001031413800014N/A