期刊
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS
卷 22, 期 -, 页码 25-28出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colcom.2017.11.007
关键词
Adsorption; Anthropogenic markers; Emerging water pollutants; Multiwalled carbon nanotubes
资金
- Spanish Ministry of Economy, Industry and Competitiveness (AEI/MINECO)
- European Regional Development Fund (ERDF) [MAT2013-47811-C2-1-R]
- Santander Bank through the Research Intensification Program
A commercial multiwalled carbon nanotube has been used to adsorb caffeine and diclofenac, which are representative anthropogenic markers for wastewater contamination of surface waters. The effect that several parameters, such as the initial concentration of organic molecules, the mass of adsorbent and the contact time, may have on the adsorption behavior of the solid has also been studied. In addition, the adsorption kinetics were studied and found to best fit pseudo-second-order and intraparticle-diffusion models. Equilibrium, which was usually achieved after a contact time of 30 min, is described using various isotherm equation models. After treatment with HCl, the adsorbent was found to maintain its adsorption capacity after one cycle of reuse.
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