J. Mater. Sci. Technol. ›› 2020, Vol. 43: 14-20.DOI: 10.1016/j.jmst.2020.01.012

• Research Article • Previous Articles     Next Articles

Inhibition effects of benzalkonium chloride on Chlorella vulgaris induced corrosion of carbon steel

Junlei Wangab, Tiansui Zhanga, Xinxin Zhanga, Muhammed Asifa, Lipei Jianga, Shuang Dongc, Tingyue Gub, Hongfang Liua*()   

  1. a School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
    b Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH, 45701, USA
    c School of Chemical Engineering and Materials, Changzhou Institute of Technology, Changzhou, Jiangsu, 213032, China
  • Received:2019-06-16 Accepted:2019-09-19 Published:2020-04-15 Online:2020-04-26
  • Contact: Liu Hongfang

Abstract:

In this work, a surfactant, benzalkonium chloride (BAC), was used to study its effects on both the growth of Chlorella vulgaris and the corrosion caused by its biofilm. Experimental results indicated that BAC at a low concentration of 3 mg/L suppressed C. vulgaris growth and achieved 81 % corrosion inhibition based on weight loss reduction. The inhibition effects increased when the BAC dosage was increased. At 30 mg/L, the corrosion inhibition increased to 95 %. Electrochemical results supported surface pitting analysis, weight loss results data and confirmed the corrosion inhibition.

Key words: Benzalkonium chloride, Chlorella vulgaris, Carbon steel, Corrosion, Electrochemistry