Abstract

AbstractMost antibiotics have been demonstrated to be low biodegradable in biological treatment systems, thus advanced oxidation processes, particularly solar photocatalytic oxidation also known as a green process, have gained an essential attraction for their effective removal from effluents. However, so far there has been a very limited number of studies on ampicillin (AMP) removal that focused on one initial concentration of AMP and fixed photon energy. Therefore, this study was designed to investigate the effect of varying pH and incident photon fluxes on heterogeneous photocatalytic AMP removal at two AMP initial concentrations (50 and 100 mg L−1) using 0.5 g L−1 TiO2 dose under UV-A (315–400 nm wavelengths) irradiation. Photocatalytic experiments were run in a vessel with 200-mL effective sample volume. Process efficiency was monitored by degradation (UV–vis, LC-MS/MS), mineralization (TOC), and acute toxicity to Daphnia magna during 24–48 h exposure times to evaluate possible toxic effect of oxidat...

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