Ciprofloxacin Adsorption on Graphene and Granular Activated Carbon: Kinetics, Isotherms, and Effects of Solution Chemistry Xuan Zhu1, Daniel C.W. Tsang2, Feng Chen3, Shiyu Li1, Xin Yang1,* Supplemental Material Table S1. Comparison of Ciprofloxacin Adsorption Results in the Literature 1 SYSU-HKUST Research Center for Innovative Environmental Technology, School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China. 2 Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China. 3 Foshan Water Group, Foshan 52800, China. * Corresponding author (email: yangx36@mail.sysu.edu.cn, phone: 0086-20-39332690, fax: 0086-2039332690). 1 Table S1. Comparison of Ciprofloxacin Adsorption Results in the Literature. Ciprofloxacin Concentration Adsorbent Conditions Adsorption capacity Name Concentratio n Surface area pH Temperature Contact time 0-35 mg/L single-walled carbon nanotubes 100 mg/L 541 m2/g 7.0±0.2 298 K 72 h 130 mg/g 0-35 mg/L multi-walled graphitized carbon nanotubes 167 mg/L 117 m2/g 7.0±0.2 298 K 72 h 43 mg/g 0-35 mg/L multi-walled carboxylized carbon nanotubes 167 mg/L 164 m2/g 7.0±0.2 298 K 72 h 42 mg/g 0-35 mg/L multi-walled hydroxylized carbon nanotubes 133 mg/L 228 m2/g 7.0±0.2 298 K 72 h 50 mg/g 0-80 mg/L 6% graphene oxide/calcium alginate 2 g/L - 6.1 293 K 24 h 40 mg/g 0-25 mg/L Commercial activated carbon 50 mg/L 1237 m2/g 5 298 K 72 h 230 mg/g 0-25 mg/L Carbon xerogel 50 mg/L 617 m2/g 5 298 K 72 h 110 mg/g 0-25 mg/L Multi-walled carbon nanotubes 50 mg/L 284 m2/g 5 298 K 72 h 135 mg/g 2 Reference Haibo Li, Di Zhang, Xiaozeng Han, Baoshan Xing_2014_ Adsorption of antibiotic ciprofloxacin on carbon nanotubes: pH dependence and thermodynamics Wu, Shaoling; Zhao, Xindong; Li, Yanhui_2013_Adsorption of ciprofloxacin onto biocomposite fibers of graphene oxidecalcium alginate Carabineiro, S. A. C; Thavorn-amornsri, T; Pereira, M. F. R; Serp, P; Figueiredo, J. L_2012_Comparison between activated carbon, carbon xerogel and carbon nanotubes for the adsorption of the antibiotic ciprofloxacin 40-140 mg/L modified coal fly ash 40 mg/L 17.5 m2/g - 303 K 100 min 1.4 mg/g 25-400 mg/L Chitosan 1 g/L - 6.8 310±2 K 300 min 32.9 mg/g 25-400 mg/L Chitosan-Fe(II) 1 g/L - 6.8 310±2 K 300 min 105.7 mg/g 25-400 mg/L Chitosan-Fe(III) 1 g/L - 6.8 310±2 K 300 min 305.3 mg/g 25-400 mg/L Chitosan-Zn(II) 1 g/L - 6.8 310±2 K 300 min 302 mg/g 0.1-2 mmol/L (33-663 mg/L) Highly defected kaolinite 100 g/L - <4.5 Room temperature 24 h 18 mmol/kg (6 mg/g) 2-60 mg/L Graphene 50 mg/L 1556 m2/g 7 298 K 5 min 322.6 mg/g Zhang, C. L; Qiao, G. L; Zhao, F; Wang, Y_2011_Thermodynamic and kinetic parameters of ciprofloxacin adsorption onto modified coal fly ash from aqueous solution Reynaud, F; Tsapis, N; Deyme, M; Vasconcelos, T. G; Gueutin, C; Guterres, S. S; Pohlmann, A. R; Fattal, E_2011_Spray-dried chitosan-metal microparticles for ciprofloxacin adsorption: Kinetic and equilibrium studies Z. Li, H. Hong, L. Liao, C.J. Ackley, L.A. Schulz, R.A. MacDonald, A.L. Mihelich, S.M. Emard_2011_A mechanistic study of ciprofloxacin removal by kaolinite This study 2-60 mg/L GAC 50 mg/L 27.4 m2/g 7 298 K 3 24 h 188.3 mg/g