Journal
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
Volume 85, Issue 6, Pages 821-830Publisher
WILEY-BLACKWELL
DOI: 10.1002/jctb.2370
Keywords
electrochemical oxidation; kinetics; mathematical modelling; photovoltaic solar energy; diamond boron-doped electrodes; lignosulfonate
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Funding
- Ministry of Science and Technology of Spain [CTM2006-00317]
- project CENIT Sostaqua
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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. (C) 2010 Society of Chemical Industry
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