Department of Environmental Engineering, Erciyes University, Kayseri, 38039, Turkey.
Chemosphere. 2022 Apr;293:133566. doi: 10.1016/j.chemosphere.2022.133566. Epub 2022 Jan 8.
Salicylic acid is an important pharmaceutic and widely used in plant hormones and personal care products. Peroxicoagulation (PC) method has recently been employed in treatment of various pollutants. In general, carbon-based cathode materials such as graphite and carbon fiber are used for in situ HO production and stainless steel (SS316-L) anode for low iron production in PC studies as an efficient system modification. This study was conducted to investigate salicylic acid removal efficiency of electrochemical processes. Stainless steel was used as anode in this study. It was believed that the oxidation effect of stainless steel could be responsible for partial removal of salicylic acid. In this study, stainless steel anode and graphite or carbon fiber cathodes were employed in PC treatments for removing salicylic acid from aqueous solution, and some model trials were also made to investigate the in-situ Fe and HO production performance. Present findings revealed a total organic carbon (TOC) removal of 30.5% and salicylic acid removal of 69.5% at optimized conditions. The EF system modification used in the study can be proposed as an easy, low-cost and effective treatment alternative for treatment of pharmaceutical industry wastes such as salicylic acid.
水杨酸是一种重要的药物，广泛应用于植物激素和个人护理产品。过氧凝聚（PC）方法最近已被用于处理各种污染物。一般来说，在 PC 研究中，用于原位 HO 生成的碳基阴极材料（如石墨和碳纤维）和用于低铁生成的不锈钢（SS316-L）阳极被用作高效的系统改性。本研究旨在研究电化学过程去除水杨酸的效率。本研究中使用不锈钢作为阳极。据信，不锈钢的氧化作用可能是部分去除水杨酸的原因。在这项研究中，不锈钢阳极和石墨或碳纤维阴极被用于 PC 处理，以从水溶液中去除水杨酸，并进行了一些模型试验以研究原位 Fe 和 HO 的生成性能。研究结果表明，在优化条件下，TOC 的去除率为 30.5%，水杨酸的去除率为 69.5%。本研究中使用的 EF 系统改性可作为一种简单、低成本、有效的替代方法，用于处理水杨酸等制药工业废物。
