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Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/29093

Title: Removal of residual phenols from coke wastewater by adsorption
Author(s): Vázquez, Isabel
Rodríguez Iglesias, Jesús Avelino
Marañón Maison, María Elena
Castrillón Peláez, Leonor
Álvarez, M.
Keywords: Adsorption
Phenol
COD
Coke wastewater
Tertiary treatment
Issue date: 2007
Publisher: Elsevier
Publisher version: http://dx.doi.org/10.1016/j.jhazmat.2007.01.019
Citation: Journal of Hazardous Materials, 147(1-2), p. 395-400 (2007), doi:10.1016/j.jhazmat.2007.01.019
Format extent: p. 395-400
Abstract: After biological treatment, coke wastewater contains small amounts of phenolic compounds resistant to such treatment. The removal of phenols and COD from coke wastewater subjected to biological treatment was studied. The adsorbents used were granular activated carbon and the resins XAD-2, AP-246 and OC-1074. Equilibrium, kinetics and column assays were carried out, fitting the equilibrium data to Langmuir and Freundlich models and the kinetic data to the Lagergren equation. The best results were obtained with GAC, which presented higher adsorption capacities. In the equilibrium assays, the adsorption capacities (Q) found were 1.48 mg g−1 for GAC versus 0.07 and 0.04 mg g−1 for resins AP-246 and OC-1074, respectively. In the kinetic assays, the values of the Lagergren adsorption parameter, qe, were 1.69, 0.15 and 0.14 mg g−1 for GAC, AP-246 and OC-1074, respectively. In the column assays, the dynamic capacity of GAC for up to 480 bed volumes was 1.82 mg mL−1. No saturation was obtained for this volume due to the asymptotic shape of the breakthrough curve, whereas for the same percolated volume, the resins AP-246 and OC-1074 were saturated. These two resins presented similar saturation capacities of around 1.1 mg mL−1
URI: http://hdl.handle.net/10651/29093
ISSN: 0304-3894
Sponsored: European Union - ECSCS. Project BIOCONTROL (Ref. No. 7210-PR-235)
Appears in Collections:Artículos
Ingeniería Química y Tecnología del Medio Ambiente

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