Effect of water matrix on ligand-assisted adsorption of ciprofloxacin from aqueous solutions by zerovalent iron nanoparticles

• Published in: International Exchange and Innovation Conference on Engineering and Sciences
• Main Author: Falyouna O.; Maamoun I.; Idham M.F.; Eljamal O.
• Format: Conference paper
• Language: English
• Published: Kyushu University 2022
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85171880377&doi=10.5109%2f5909063&partnerID=40&md5=0faba3ad8e3b43cdb7a62850c31042de
• ISSN: 24341436
• DOI: 10.5109/5909063

The adsorption of the antibiotic ciprofloxacin (CIP) from natural water and wastewater could be challenging due to the presence of competing compounds and elements. This study illustrates the negative influence of ionic strength, coexisting ions, and natural organic matter on the adsorption of CIP by oxalate-modified zerovalent iron nanoparticles (Fe0/oxalate). The results showed that the ionic strength of aqueous solution slightly decreased CIP removal efficiency from 95.43% to 85.23% after increasing sodium chloride concentration to 100 mM. On the contrary, the competence of (Fe0/oxalate) nanoparticles in adsorbing CIP slightly dropped from 95.43% to 94.42% due to the increase of humic acid from 0 to 40 mg L-1. Also, the outcomes conclude that the inhibitory effect of 10 mM of coexisting ions was ranked as follows: K+ < CO3 2– < Ca2+ < SO₄2– < NO3 – <Mg2+. © 2023 Kyushu University. All rights reserved.