Shorea robusta Bark Extract as a Novel Green Inhibitor for Mild Steel Corrosion in 1 M H2SO4 Solution

Authors

  • Ajay Kumar Bajgai Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu, Nepal
  • Rajaram Karki Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu, Nepal
  • Jamuna Thapa Magar Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu, Nepal
  • Puspa Lal Homagai Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu, Nepal
  • Hari Bhakta Oli Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu
  • Deval Prasad Bhattarai Department of Chemistry, Amrit Campus, Tribhuvan University, Kathmandu

DOI:

https://doi.org/10.3126/arj.v3i01.50494

Keywords:

Shorea robusta, extract, green inhibitors, mild steel, weight loss, polarization

Abstract

Extract of Shorea robusta bark as a novel green inhibitor for mild steel (MS) corrosion has been investigated. Qualitative chemical tests, UV, and FTIR measurements were carried out to confirm phytochemicals in the extract. Gravimetric as well as electrochemical methods were employed to examine the inhibition efficiency of the extract. Effects of inhibitor concentration, immersion time as well as working temperature were investigated by weight loss measurement method. Weight loss measurement reveals the maximum inhibition efficiency of 1000 ppm inhibitor for half an hour immersion time. Also, 1000 ppm inhibitor can work up to a temperature of 55°C with 50% efficiency. Electrochemical measurements reflected the mixed type of inhibition behavior of the inhibitor. Polarization measurement results, the 93.73% and 75%, respectively for as-immersed and immersed samples in1000 ppm inhibitor concentration. Based on these findings, it is revealed that the Shorea robusta bark extract could be used as low temperature inhibitor.

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Published

2022-12-23

How to Cite

Bajgai, A. K., Karki, R., Thapa Magar, J., Homagai, P. L., Oli, H. B. ., & Bhattarai, D. P. (2022). Shorea robusta Bark Extract as a Novel Green Inhibitor for Mild Steel Corrosion in 1 M H2SO4 Solution. Amrit Research Journal, 3(01), 29–45. https://doi.org/10.3126/arj.v3i01.50494

Issue

Vol. 3 No. 01 (2022)

Section

Articles