Removal of salicylic acid by electrochemical processes using stainless steel and platinum anodes


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Koktas I. Y. , GÖKKUŞ Ö.

CHEMOSPHERE, vol.293, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 293
  • Publication Date: 2022
  • Doi Number: 10.1016/j.chemosphere.2022.133566
  • Journal Name: CHEMOSPHERE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Artic & Antarctic Regions, BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, EMBASE, Environment Index, Food Science & Technology Abstracts, Geobase, Greenfile, MEDLINE, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Salicylic acid, Peroxicoagulation, Graphite, Carbon fiber, Water treatment, Stainless Steel, ELECTRO-FENTON PROCESS, BORON-DOPED DIAMOND, GAS-DIFFUSION ELECTRODES, CARBON-FELT CATHODE, WASTE-WATER, HYDROGEN-PEROXIDE, PHOTOELECTRO-FENTON, AQUEOUS-SOLUTION, OXIDATION PROCESSES, GRAPHITE ELECTRODE
  • Erciyes University Affiliated: Yes

Abstract

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 H2O2 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 Fe2+ and H2O2 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.