Degradation of natural organic matter and disinfection byproducts formation by solar photolysis of free available chlorine.

ABSTRACT: Environment disinfection effectively curbs transmission of the Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). However, elevated concentration of free available chlorine (FAC) in disinfectants can be discharged into surface water, generating toxic disinfection byproducts (DBPs). The impact of solar photolysis of FAC on natural organic matter (NOM) to form DBPs has not been well studied. In this work, solar photolysis of FAC was found to result in higher formation of DBPs, DBPs formation potential (DBPsFP), total organic chlorine (TOCl) and lower specific ultraviolet absorbance at 254 nm (SUVA₂₅₄), compared to dark chlorination. In solar photolysis of FAC, formation of total DBPs was promoted by pH=8, but hindered by the addition of HCO₃^-, radi

SUBMITTER: Chen C 

PROVIDER: S-EPMC10149525 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature