fig5
From: Microplastic removal by coagulation: a review of optimizing the reaction conditions and mechanisms
Figure 5. FTIR spectra of MPs and flocs before and after PAC coagulation. Spectra of the precipitate (A) before and (B)-(D) after PAC coagulation supported by coagulant aid[42]. ASA: Activated silicic acid; FTIR: fourier transform infrared spectroscopy; MPs: microplastics; PAC: poly aluminum chloride; PAM: polyacrylamide; PET: polyethylene terephthalate; SA: silicic acid.
