Predicting the speciation of ionizable antibiotic ciprofloxacin by biochars with varying carbonization degrees.

ABSTRACT: Sorption mechanisms of ionizable organic pollutants by biochars and approaches for the prediction of sorption are still unclear. In this study, batch experiments were conducted to explore the sorption mechanisms of woodchip-derived biochars prepared at 200-700 °C (referred as WC200-WC700) for cationic, zwitterionic and anionic species of ciprofloxacin (referred as CIP⁺, CIP^± and CIP^-, respectively). The results revealed that the sorption affinity of WC200 for different CIP species was in the order of CIP^± > CIP⁺ > CIP^-, while that of WC300-WC700 remained the order of CIP⁺ > CIP^± > CIP^-. WC200 exhibited a strong sorption ability, which could be attributed to hydrogen bonding and electrostatic

SUBMITTER: Shi G 

PROVIDER: S-EPMC10052695 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature