Enhanced photodegradation of diphenhydramine in aqueous solution containing natural sand particles.

ABSTRACT: Understanding the effects of natural solid particles on the phototransformation of pharmaceuticals in aqueous environments is very important, but studies on this are still limited. In this study, natural sands were selected as a solid particle model due to their wide distribution in surface waters during the rainy season, and the phototransformation of diphenhydramine (DP) in the presence of the sands was investigated. The kinetic studies showed that the natural sands exhibited significant photocatalytic activity for the DP photodegradation, and the activity varied depending on their sources. Scavenging experiments and electron paramagnetic resonance analysis demonstrated that O₂ ^-˙ and ˙OH were produced in the irradiated natural sand systems, and O₂ ^-

SUBMITTER: Yi C 

PROVIDER: S-EPMC9053472 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature