| Literature DB >> 20398999 |
Tatiana Calvete1, Eder C Lima, Natali F Cardoso, Júlio C P Vaghetti, Silvio L P Dias, Flavio A Pavan.
Abstract
Activated (AC-PW) and non-activated (C-PW) carbonaceous materials were prepared from the Brazilian-pine fruit shell (Araucaria angustifolia) and tested as adsorbents for the removal of reactive orange 16 dye (RO-16) from aqueous effluents. The effects of shaking time, adsorbent dosage and pH on the adsorption capacity were studied. RO-16 uptake was favorable at pH values ranging from 2.0 to 3.0 and from 2.0 to 7.0 for C-PW and AC-PW, respectively. The contact time required to obtain the equilibrium using C-PW and AC-PW as adsorbents was 5 and 4h at 298 K, respectively. The fractionary-order kinetic model provided the best fit to experimental data compared with other models. Equilibrium data were better fit to the Sips isotherm model using C-PW and AC-PW as adsorbents. The enthalpy and entropy of adsorption of RO-16 were obtained from adsorption experiments ranging from 298 to 323 K. Copyright 2010 Elsevier Ltd. All rights reserved.Entities:
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Year: 2010 PMID： 20398999 DOI： 10.1016/j.jenvman.2010.03.013
Source DB: PubMed Journal: J Environ Manage ISSN： 0301-4797 Impact factor: 6.789