Porous Carrageenan-Derived Carbons for Efficient Ciprofloxacin Removal from Water
authors Nogueira, J; Antonio, M; Mikhalev, SM; Fateixa, S; Trindade, T; Daniel-da-Silva, AL
nationality International
journal NANOMATERIALS
author keywords carrageenan; hydrochar; activated carbon; adsorption; ciprofloxacin
keywords HOSPITAL WASTE-WATER; ACTIVATED CARBON; FLUOROQUINOLONE ANTIBIOTICS; HYDROTHERMAL SYNTHESIS; EMERGING POLLUTANTS; ADSORPTION REMOVAL; AQUEOUS-SOLUTION; PHARMACEUTICALS; SORPTION; OPTIMIZATION
abstract Porous carbon materials derived from biopolymers are attractive sorbents for the removal of emerging pollutants from water, due to their high specific surface area, high porosity, tunable surface chemistry, and reasonable cost. However, carrageenan biopolymers were scarcely investigated as a carbon source to prepare porous carbon materials. Herein, hydrochars (HCs) and porous activated carbons (ACs) derived from natural occurring polysaccharides with variable sulfate content (kappa-, iota- and lambda-carrageenan) were prepared and investigated in the uptake of ciprofloxacin, which is an antibiotic detected in water sources and that poses serious hazards to public health. The materials were prepared using hydrothermal carbonization and subsequent chemical activation with KOH to increase the available surface area. The activated carbons were markedly microporous, presenting high specific surface area, up to 2800 m(2)/g. Activated carbons derived from kappa- and lambda-carrageenan showed high adsorption capacity (422 and 459 mg/g, respectively) for ciprofloxacin and fast adsorption kinetics, reaching the sorption equilibrium in approximately 5 min. These features place the ACs investigated here among the best systems reported in the literature for the removal of ciprofloxacin from water.
publisher MDPI
issn 2079-4991
year published 2018
volume 8
issue 12
digital object identifier (doi) 10.3390/nano8121004
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000455323100042
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journal analysis (jcr 2017):
journal impact factor 3.504
5 year journal impact factor 3.811
category normalized journal impact factor percentile 66.708
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