Evaluation of disinfection by-product formation potential (DBPFP) during chlorination of two algae species - Blue-green Microcystis aeruginosa and diatom Cyclotella meneghiniana

An evaluation of disinfection by-product formation potential (DBPFP) from Microcystis aeruginosa and Cyclotella meneghiniana during chlorination should be conducted. Five DBPs including trichloromethane (TCM), trichloronitromethane (TCNM), dichloroacetonitrile (DCAN), 1,1-dichloropropanone (1,1-DCP) and 1,1,1-trichloropropanone (1,1,1-TCP) were monitored. M. aeruginosa showed higher DBPFP than C. meneghiniana, the yield of DBPs varied with components of algal cells. The DBPFP order from components of M. aeruginosa was cell suspension (CS) ≈ intracellular organic matter (IOM) > extracellular organic matter (EOM) > cell debris (CD), which indicated that IOM was the main DBP precursors for M. aeruginosa. The yields of DBPs from components of C. meneghiniana were in the order of CS > IOM ≈ CD ≈ EOM.