Journal Highlight: Evaluating fluorescence and ultraviolet photometry to assess dissolved organic matter removal during coagulation-flocculation

Evaluating fluorescence and ultraviolet photometry to assess dissolved organic matter removal during coagulation-flocculation

Water and Environment Journal 2011, 25, 540-546
Gone Droh Lancine, Kamagate Bamory, Ligban Raymond, Savane Issiaka, Biemi Jean

Abstract: Ultraviolet absorption at 254 nm (UV₂₅₄) and peaks (A, C and T) fluorescence intensities were evaluated to assess dissolved organic carbon (DOC) removal during coagulation-flocculation. The consistency of fluorescence data was checked to ensure that no inner filter effect, quenching or enhanced intensities affected the data. The decreases in UV₂₅₄ and peak intensities were calculated in percentage terms between raw and clarified water and compared with measured DOC removal. The results indicate that peak A, peak C, peak T and UV₂₅₄ exhibit strong linear relationships (R²: 0.91, 0.89, 0.92 and 0.99, respectively) with DOC removal, implying that these parameters are useful indicators of DOC removal.

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