Journal
TOXICS
Volume 10, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/toxics10020077
Keywords
ciprofloxacin; antibiotics; adsorption; graphene oxide; polyacrylamide; alginate; double-network; adsorbent
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Funding
- Nuclear Energy Development Program through the National Research Foundation of Korea (NRF) - Ministry of Science and ICT [2018M2B2B1065631]
- National Research Foundation of Korea [2018M2B2B1065631] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Graphene oxide/calcium alginate-polyacrylamide beads effectively removed the antibiotic ciprofloxacin. The adsorption isotherm data fit well with the Langmuir model.
Ciprofloxacin (CPX), a widely used antibiotic, was removed by synthesizing graphene oxide/calcium alginate-polyacrylamide (GO/Ca-Alg(2)-PAM) beads, a three-dimensional double-network complex. The synthesis of GO/Ca-Alg(2)-PAM beads was performed by crosslinking and cation exchange mechanisms with graphene oxide (GO), sodium alginate (Na-Alg), and polyacrylamide (PAM). The properties of GO/Ca-Alg(2)-PAM beads were confirmed using field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and a thermogravimetric analysis. Furthermore, isothermal adsorption experiments were performed and fitted using three isothermal adsorption models (Langmuir, Freundlich, and Temkin). The adsorption isotherm experimental data fit well with the Langmuir isotherm model with a q(m) value of 6.846 mg/g. In addition, the spontaneous reaction of the CPX adsorption using GO/Ca-Alg(2)-PAM was confirmed by temperature-dependent experiments.
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