Electrochemical Treatment of Petroleum Refinery Wastewater Using SnO2 and Graphite Anodes

IF 1.3 4区工程技术 Q3 CHEMISTRY, ORGANIC Petroleum Chemistry Pub Date : 2024-05-23 DOI:10.1134/s0965544124020075

Husham M. Al-Tameemi, Khalid A. Sukkar, Ali H. Abbar

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Abstract

In recent years, clean water has become increasingly scarce because of the highly consumption by human and industry. Therefore, a huge amount of wastewater was discharged to the environment and their treatment is essential by using cost-effective methods. In this study, wastewater from petroleum refinery was processed by an electrochemical oxidation using two types of anodic materials graphite and SnO₂ film deposited on Cu substrate. SnO₂ anode was prepared from nitrate media and characterized by XRD and SEM. Experiments were conducted to determine the performance of each electrode at a current density of 12 mA/cm² in the absence of NaCl addition. The SnO₂ electrode showed better processing ability than the graphite electrode at the same current density in case of no addition of NaCl. Addition NaCl resulted in increasing the activity of graphite in the treatment of wastewater but never exceeded the efficiency of SnO₂. The best removal of chemical oxygen demand (COD) at a current density of 12 mA/cm² and 150 min was 79% in case of SnO₂ in comparison with 72% in case of using graphite with addition of NaCl. Energy consumption in case of SnO₂ was 9.93 kWh/kg COD which is very low in comparison with the using of graphite (49.6 kWh/kg COD). The decay of COD was found to obey pseudo first order for anodic oxidation using SnO₂ or graphite electrodes.

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使用二氧化锡和石墨阳极对石油炼制废水进行电化学处理

摘要近年来，由于人类和工业的大量消耗，清洁水变得越来越稀缺。因此，大量废水被排放到环境中，必须采用经济有效的方法对其进行处理。本研究利用沉积在铜基板上的石墨和二氧化锡薄膜这两种阳极材料，通过电化学氧化法处理石油精炼厂的废水。二氧化锡阳极由硝酸盐介质制备而成，并通过 XRD 和 SEM 进行了表征。实验确定了在不添加氯化钠的情况下，电流密度为 12 mA/cm2 时每种电极的性能。在不添加 NaCl 的情况下，相同电流密度下二氧化锡电极的处理能力优于石墨电极。加入 NaCl 会提高石墨处理废水的活性，但不会超过二氧化锡的效率。在电流密度为 12 mA/cm2 和 150 分钟的条件下，二氧化锡对化学需氧量（COD）的去除率为 79%，而使用石墨并添加氯化钠的去除率为 72%。二氧化锡的能耗为 9.93 千瓦时/千克 COD，与使用石墨（49.6 千瓦时/千克 COD）相比非常低。使用二氧化锡或石墨电极进行阳极氧化时，发现 COD 的衰减服从假一阶。

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来源期刊

Petroleum Chemistry 工程技术-工程：化工

CiteScore

2.50

自引率

21.40%

发文量

102

审稿时长

6-12 weeks

期刊介绍： Petroleum Chemistry (Neftekhimiya), founded in 1961, offers original papers on and reviews of theoretical and experimental studies concerned with current problems of petroleum chemistry and processing such as chemical composition of crude oils and natural gas liquids; petroleum refining (cracking, hydrocracking, and catalytic reforming); catalysts for petrochemical processes (hydrogenation, isomerization, oxidation, hydroformylation, etc.); activation and catalytic transformation of hydrocarbons and other components of petroleum, natural gas, and other complex organic mixtures; new petrochemicals including lubricants and additives; environmental problems; and information on scientific meetings relevant to these areas. Petroleum Chemistry publishes articles on these topics from members of the scientific community of the former Soviet Union.