Preparation of coagulants Inorganic coagulants, FeCl3, AlCl3, TiCl4 (reagent grade), and organic polyelectrolyte, non-ionic polyacrylamide (PAM) (Mw 5.103–6.103 Da), anionic polyacrylamide (aPAM) (Poly (2-acrylamido-2-methyl-1-propanesulfonic acid) solution average, MW 2 × 103 Da were obtained from Sigma-Aldrich, Australia.
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