Fig. 3

The AFI reduction ratio from (a) soluble microbial product-like (SMPL), b humic acid-like (HAL), c fulvic acid-like (FAL) and d aromatic protein-like (APL) substances in EOM suspensions and IOM-EOM mixture after 1 h of EO and EF treatment. (Anode: BDD, Cathode: graphite felt, pH 3, 20 mM Na2SO4, 3 mM FeSO4 in EF, CD: 10 mA cm−2, Initial DOC: 6 ± 0.5 mg L−.1)