Treatment of Simulated Steel Pickling Waste Liquor by Electrochemical Synthesis of Fe3O4

被引：0
作者：
Guangtuan Huang
Jingwen Chen
Shuangshuang Gao
机构：
[1] East China University of Science and Technology,National Engineering Laboratory for Industrial Wastewater Treatment, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Env
来源：
Water, Air, & Soil Pollution | 2020年 / 231卷
关键词：
Steel pickling waste liquor; Electrochemical synthesis; Graphite plate; Fe; O;
D O I：
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学科分类号：
摘要：
Due to the serious pollution and great harm of steel pickling waste liquor, the treatment of the waste liquor with high concentration of iron ion has been a problem in a lot of countries around the world. A simple electrochemical method is proposed for recovering iron from steel pickling waste liquor with graphite plates as electrodes. This study investigated the effects of reaction parameters on the concentration of residual total iron (TFe) in steel pickling waste liquor, including initial pH, reaction temperature, electrode distance, current density, and electrolytic time. Under the optimal reaction condition, the removal efficiency of TFe was 99.98%. The obtained precipitates were measured by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. It was found that the precipitates were high purity of Fe3O4 with small amount of γ-Fe2O3. This method will provide an effective and potential solution for resource recycling of steel pickling waste liquor.
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