Biofeedstock-induced metal corrosion: Reactions between carbon steel and triacylglycerol-based solutions at elevated temperature

Deborah Liu, Samyukta Shrivastav, Soheil Daraydel, Nathan Levandovsky, Hyosung An, Siddhesh Shevade, Qian Chen, Jessica A. Krogstad, Daniel V. Krogstad

Research output: Contribution to journalArticlepeer-review

Abstract

Triacylglycerol-based feedstocks are crucial for renewable fuel production, but their increased reactivity results in accelerated corrosion of process equipment. We performed systematic corrosion experiments of carbon steel at 274 °C in the presence of a 10 wt. % soybean oil in white oil solution throughout the early stages of corrosion (0–30 h). The corrosion rate peaked at 10 h, followed by substantial iron oxide growth on the surface. The maximum corrosion rate was preceded by an increase in fatty acid concentration and succeeded by an increase in iron and water concentration in solution. Our findings provide insight into the fundamental mechanisms of biofeedstocks-induced corrosion.

Original languageEnglish (US)
Article number111088
JournalCorrosion Science
Volume216
DOIs
StatePublished - May 15 2023
Externally publishedYes

Keywords

  • Carbon steel
  • Fatty acids
  • IR spectroscopy
  • Nonaqueous corrosion
  • TEM

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • General Materials Science

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