MNPs
Tigris river
citric acid coated MNPs
turbidity removal
coagulation and flocculation
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The coagulation and flocculation process using coated magnetic nanoparticles is considered one of the effective
technologies for turbidity removal. This study investigates an application of magnetic nanoparticles coated with
citric acid in the coagulation and flocculation process on Tigris River water in Baghdad, Iraq. Magnetic nanoparticles (MNP1) were synthesized by the co-precipitation method and coated with citric acid (MNP2). The prepared
MNP1 and MNP2 were characterized by XRD, FTIR, AFM, FE-SEM, EDS, and zeta potential analysis. For
coagulation process, the effect of different types of coagulants (alum, FeCl3, MNP1, MNP2), coagulant dosage
(10–110 mg/l), and initial pH (3–9) were examined in this work. The best coagulant was MNP2
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