Photovoltaic solar electrochemical oxidation (PSEO) for treatment of lignosulfonate wastewater |
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Authors: | Antonio Dominguez‐Ramos Ruben Aldaco Angel Irabien |
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Affiliation: | Departamento de Ingeniería Química y Química Inorgánica, Universidad de Cantabria, Avda. de Los Castros, s/n, 39005, Santander, Spain |
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Abstract: | BACKGROUND: Under the current global energy scenario, the need for self‐sustainable processes is encouraged. The photovoltaic solar powered electrochemical oxidation (PSEO) process has been developed to remove the organic matter from a lignosulfonate wastewater. RESULTS: An electrochemical reactor using boron‐doped diamond electrodes, in a batch configuration, is directly supplied with current from a set of photovoltaic solar modules. Experimental results show that the process can oxidize about 90% of the total organic carbon (TOC) of the organic matter in the wastewater under the described operating conditions. CONCLUSION: The technical suitability of the PSEO process has been demonstrated. A model to relate solar irradiance and electrical current was applied and used in a kinetic expression which depends on solar irradiance to describe the removal of TOC. Copyright © 2010 Society of Chemical Industry |
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Keywords: | electrochemical oxidation kinetics mathematical modelling photovoltaic solar energy diamond boron‐doped electrodes lignosulfonate |
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