Comparative removal of emerging contaminants from aqueous solution by adsorption on an activated carbon
| Autor: | A. M. García, Sophia A. Korili, N. Taoufik, Antonio Gil |
|---|---|
| Přispěvatelé: | Universidad Pública de Navarra. Departamento de Ciencias, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. INAMAT2 - Institute for Advanced Materials and Mathematics, Nafarroako Unibertsitate Publikoa. Zientziak Saila, Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. InaMat - Institute for Advanced Materials |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Granular activated carbon
Emerging water pollutants Activated carbon 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences 01 natural sciences Adsorption medicine Environmental Chemistry Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Pollutant Aqueous solution Chemistry Water Sorption General Medicine Contamination Hydrogen-Ion Concentration 020801 environmental engineering Solutions Kinetics Chemical engineering Pharmaceutical pollutants Charcoal Thermodynamics Water Pollutants Chemical medicine.drug |
| Zdroj: | Academica-e: Repositorio Institucional de la Universidad Pública de Navarra Universidad Pública de Navarra Academica-e. Repositorio Institucional de la Universidad Pública de Navarra instname |
| Popis: | Batch sorption experiments were performed to study the adsorption of six emerging pollutants from aqueous solutions using a commercial granular activated carbon as adsorbent. Caffeine, clofibric acid, diclofenac, gallic acid, ibuprofen and salicylic acid were selected as representative contaminants. The activated carbon was characterized by nitrogen adsorption at 77 K, and through the determination of point of zero charge. The effects of several operational parameters, such as pH, initial concentration of organic molecules, mass of adsorbent and contact time, on the sorption behaviour were evaluated. The contact time to attain equilibrium for maximum adsorption was found to be 40 min. The kinetic data were correlated to several adsorption models, and the adsorption mechanism found to follow pseudo-second-order and intraparticle-diffusion models with external mass transfer predominating in the first 15 min of the experiment. The equilibrium adsorption data were analysed using the Freundlich, Langmuir and Toth isotherm equation models. The similar chemical structure and molecular weight of the organic pollutants studied to make the adsorption capacity of the activated carbon used very similar for all the molecules. This work was supported by the Spanish Ministry of Science and Innovation (MICINN) through project MAT2013-47811-C2-1-R. |
| Databáze: | OpenAIRE |
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