Journal
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
Volume 62, Issue -, Pages 228-238Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jtice.2016.02.009
Keywords
N-doped; Hierarchically porous carbons; Shrimp shell; Adsorption; Sulfamethazine; Chloramphenicol
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Funding
- National Natural Science Foundation of China [21176107, 21174057, 21277063, 21446015, U1407123]
- National Basic Research Program of China (973 Program) [2012CB821500]
- Natural Science Foundation of Jiangsu Province [BK20140534]
- Ph.D. Innovation Programs Foundation of Jiangsu Province [CXZZ13_0668]
- Research Fund for the Doctoral Program of Higher Education of China [20133227110022, 20133227110010]
- Jiangsu Planned Projects for Postdoctoral Research Funds [1102119C]
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In this research, shrimp shell, as an abundant, environmental-friendly and renewable biomass source, was successfully converted into novel N-doped hierarchically porous carbons (N-HPCs) via a simple self template carbonization and KOH activation. The physical-chemical properties of N-HPCs were characterized by FT-IR, SEM, TEM, Raman, BET and elemental analysis. The optimum N-HPCs (named N-HPC-850-2) exhibited the highest specific surface area (3171 m(2)/g) and total pore volume (1.934 cm(3)/g), and was used to effectively eliminate sulfamethazine (SMZ) and chloramphenicol (CAP) from water. Batch adsorption results showed increasing temperature was in favor of adsorption and the N-HPC-850-2 had a high adsorption affinity toward two antibiotics over a broad pH range. Adsorption isotherm data were fitted with Langmuir model very well, with the maximum monolayer adsorption capacity of 699.3 and 742.4 mg/g for SMZ and CAP at 3181<, respectively. The pseudo-second-order rate model described adsorption kinetics data well and adsorption processes were governed predominately by intra-particle diffusion and film diffusion. The thermodynamic parameters indicated the spontaneous and endothermic adsorption. Importantly, the N-HPC-850-2 adsorbent also exhibited a good regeneration capacity. Here, we provided a promising approach to prepare low-cost and high-performance biomass-based N-HPCs for fast and highly efficient removal of antibiotics from aquatic system. (C) 2016 Published by Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers.
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