Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1551378 | Solar Energy | 2011 | 11 Pages |
Abstract
The optimal initial iron dose for the photo-Fenton treatment of the leachate is 60 mg Fe2+ Lâ1, which is in agreement with path length of 5 cm in the photoreactor. The kinetic behaviour of the process (60 mg Fe2+ Lâ1) comprises a slow initial reaction, followed by a first-order kinetics (k = 0.020 LkJUV-1, r0 = 12.5 mg kJUV-1), with H2O2 consumption rate of kH2O2 = 3.0 mmol H2O2kJUV-1, and finally, the third reaction period, characterized by a lower DOC degradation and H2O2 consumption until the end of the experiment, presumably due to the formation of low-molecular-weight carboxylic groups. A total of 306 mM of H2O2 was consumed for achieving 86% mineralization (DOCfinal = 134 mg Lâ1) and 94% aromatic content reduction after 110 kJUV Lâ1, using an initial iron concentration of 60 mg Fe2+ Lâ1.
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Renewable Energy, Sustainability and the Environment
Authors
Elisangela M.R. Rocha, VÃtor J.P. Vilar, Amélia Fonseca, Isabel Saraiva, Rui A.R. Boaventura,