화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.36, 198-205, April, 2016
DOI10.1016/j.jiec.2016.01.040  Export Citation
Antibiotic amoxicillin removal from aqueous solution using magnetically modified graphene nanoplatelets
Ozge Kerkez-Kuyumcu, Sahika Sena Bayazit, and Mohamed Abdel Salam1, †
  • Chemical Engineering Department, Faculty of Engineering & Architecture, Beykent University, P.O. Box 34396, Istanbul, Turkey
  • 1Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80200, Jeddah 21589, Saudi Arabia
E-mail:
The removal of antibiotic amoxicillin (AA) from aqueous solution was investigated using magnetically modified graphene nanoplatelets (M-GNPs). M-GNPs were prepared by mixing GNPs with freshly prepared magnetite nanopartilcles, and characterized using TEM, and XRD. The characterization results revealed the homogenous distribution of the magnetite nanopartilcles over the surface of transparent platelet-like graphene platlets. The M-GNPs proved to possess superior adsorption capacity compared with the pristine GNPs and the magnetite nanopartilces. The effects of different operational parameters which affect the removal process were explored; adsorbent amounts, contact time, initial pH, temperature, and the initial concentration of AA. The results showed the great affinity of the M-GNPs toward the AA and the maximum adsorption capacity was found to be 14.10 mg g?1. The adsorption mechanism of AA by the M-GNPs involved π?π stacking and electrostatic interaction. The adsorption was studied kinetically and thermodynamically, and was found to mainly follow pseudo-second-order kinetic model, and was spontaneous and exothermic in nature.
Keywords:Adsorption;Antibiotic amoxicillin;Graphene;Kinetics;Magnetic separation
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