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Anion exchange resins (AERs); chlorination; disinfection by-products (DBPs); natural organic matter (NOM)
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Comparison Of Anion Exchange Resins And Aluminum-Based Coagulants For Natural Organic Matter (Nom) Removal And Disinfection By-Product (Dbp) Formation, Elizabeth Crafton, Dayang Wu, Stephen Duirk
Comparison Of Anion Exchange Resins And Aluminum-Based Coagulants For Natural Organic Matter (Nom) Removal And Disinfection By-Product (Dbp) Formation, Elizabeth Crafton, Dayang Wu, Stephen Duirk
Stephen E. Duirk
Anion exchange resins (AERs) were compared with aluminum-based coagulants for reducing disinfection by-product (DBP) precursor concentrations from a source water collected in northeast Ohio, USA. Three AERs (IRA-910, IRA-958, and MIEX) were evaluated to determine which resin would remove the most natural organic matter (NOM) and moieties responsible for DBP formation. All the AERs were found to be highly proficient at NOM removal specifically the moieties that absorb UV254 (i.e., chromophores) over 75 min of contact time; however, MIEX removed NOM at a faster rate than IRA-910 and IRA-958 resins. Enhanced coagulation was effective at removing approximately 35% of the …