Treatment of naphthalene derivatives with iron-carbon micro-electrolysis

来源期刊：中国有色金属学报(英文版)2006年第6期

论文作者：王玉萍 王连军 彭盘英 陆天虹

文章页码：1442 - 1447

Key words：cast iron scrap; micro-electrolysis; naphthalene; substituent; wastewater treatment

Abstract: The degradation of five naphthalene derivatives in the simulated wastewater was investigated using the iron-carbon micro-electrolysis method. The optimal initial pH of solution and adsorption of iron-carbon and removal efficiency of the total organic carbon(TOC) were investigated. The results show that the removal efficiency of the naphthalene derivatives can reach 48.9%-92.6% and the removal efficiency of TOC is 42.8%-78.0% for the simulated wastewater with 200 mg/L naphthalene derivatives at optimal pH of 2.0-2.5 after 120 min treatment. The degradation of five naphthalene derivatives with the micro-electrolysis shows the apparent first-order kinetics and the order of removal efficiency of the naphthalene derivatives is sodium 2-naphthalenesulfonate, 2-naphthol, 2, 7-dihydroxynaphthalene, 1-naphthamine, 1-naphthol-8-sulfonic acid in turn. It is illustrated that the substituents of the naphthalene ring can affect the removal efficiency of naphthalene due to their electron-withdrawing or electron-donating ability.

基金信息：the Natural Science Foundation of the Education Commission of Jiangsu Province, China
the Science and Technology Foundation of the Environmental Protection Bureau of Jiangsu Province, China