期刊
JOURNAL OF ENVIRONMENTAL MANAGEMENT
卷 99, 期 -, 页码 44-51出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2012.01.006
关键词
K-acid; Electrocoagulation; Response surface methodology (RSM); AOX; Acute toxicity; Operating cost analysis
资金
- Istanbul Technical University Scientific Research Project Foundation
The commercially important naphthalene sulfonate K-acid (C10H9NO9S3; 2-naphthylamine 3,6,8-tri sulfonic acid) was subjected to electrocoagulation employing stainless steel electrodes. An experimental design tool was used to mathematically describe and optimize the single and combined influences of major process variables on K-acid and its organic carbon (COD and TOC) removal efficiencies as well as electrical energy consumption. Current density, followed by treatment time were found to be the parameters affecting process responses most significantly, whereas initial K-acid concentration had the least influence on the electrocoagulation performance. Process economics including sludge generation, electrode consumption, and electrochemical efficiency, as well as organically bound adsorbable halogen formation and toxicity evolution were primarily considered to question the feasibility of K-acid electrocoagulation. Considering process economics and ecotoxicological parameters, process implementation appeared to be encouraging. (C) 2012 Elsevier Ltd. All rights reserved.
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