Article ID Journal Published Year Pages File Type
10642919 Solar Energy 2011 9 Pages PDF
Abstract
This paper reports on a treatment strategy of cork wastewaters through the design of a solar-photo-Fenton process using cork bleaching wastewater as hydrogen peroxide (H2O2) source, as a pre-oxidation step, before a conventional biological oxidation process. This method proved to be efficient, achieving mineralization rates higher than 90% for different iron concentrations (20-80 mg Fe L−1). Higher iron concentrations resulted in the lower energy consumption and 60 mg Fe L−1 was selected as the optimum dose for 91% mineralization and used for biodegradability studies. According to the Zahn-Wellens test, the optimum phototreatment energy to achieve a biodegradable effluent is 13.6 kJUV L−1 (65% mineralization), which corresponds to H2O2 consumption of 76.1 mM (approximately 8.5 L of cork bleaching wastewater (at 7.7 g H2O2 L−1) for 15 L of cork boiling wastewater).
Related Topics
Physical Sciences and Engineering Energy Renewable Energy, Sustainability and the Environment
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