Efficiency comparison of advanced oxidation processes for ciprofloxacin removal from aqueous solutions: Sonochemical, sono-nano-chemical and sono-nano-chemical/persulfate processes

Abstract

The aim of this study is to investigate the degradation of ciprofloxacin (CIP) from its aqueous solutions via different advanced oxidation processes (AOP). The effects of persulfate (PS) concentration, pH, zinc oxide nanoparticles (ZnO-NPs) dose, initial CIP concentration, and reaction time on the degradation of CIP were studied. It was found that the sonochemical (US) degradation is a less efficient process (with removal efficiency of 36%) compared to the sono-nano-chemical (US/ZnO) process which resulted in removal efficiency of 70%. Maximum removal of 99% was obtained using the sono-nano-chemical/PS (US/ZnO/PS) process at a frequency of 60 kHz, time of 10 min, pH of 7, initial CIP concentration of 25 mg/L, and PS concentration of 476.06 mg/L. The addition of PS and ZnO-NPs to the process enhanced the rate of US degradation of CIP. In addition, the kinetic parameters for the US/ZnO/PS process were obtained by fitting the kinetic data into the pseudo-first-order and pseudo-second-order kinetic models. The kinetic data was found to fit into the pseudo-first-order kinetic model than the pseudo-second-order model. The results showed that the AOP using US/ZnO/PS is a promising technique for the treatment of ciprofloxacin containing solutions.

Investigating the Efficiency of Zirconium Oxide Nanoparticles in Removal of Ciprofoxacin from Aqueous Environments

“…Residues of antibiotics in soil environments can lead to increased resistance of microorganisms [3][4] . As a broad-spectrum antibacterial, Ciprofloxacin (CIP) is one of the most frequently detected fluoroquinolone antibiotics which pose a serious threat to the ecosystem and human health by inducing proliferation of bacterial drug resistance 5,6 . Although the CIP concentration in the environment is low, it can induce chronic allergic reactions and antibiotic resistance in bacteria 7 .Antibiotics are potentially unchanged during the activity of conventional wastewater treatment plants [8][9] .…”

Efficacy of persulfate-based advanced oxidation process (US/PS/Fe3O4) for ciprofloxacin removal from aqueous solutions

“…One of such antibiotics is ciprofloxacin (CIP-F). Ciprofloxacin (CIP-F) is a common antibiotic of fluoroquinolone class (Onyechi and Igwegbe 2018) that is widely prescribed for the treatment of intra-abdominal infections; this type of infection is associated with diarrhea, respiratory tract infections, and urinary tract infection (Zhang et al 2011;Igwegbe et al 2020). The antibiotic is classified into the fluoroquinolone class, which has a stable naphthol ring and is toxic to microorganisms, and their stability in the environment (Martinez 2009).…”