Biological contamination of naval steel surface after non-thermal plasma treatment

S. Ghita; B. Hnatiuc; M. Hnatiuc; A. Sabau

doi:10.1117/12.2572205

31 December 2020 Biological contamination of naval steel surface after non-thermal plasma treatment

S. Ghita, B. Hnatiuc, M. Hnatiuc, A. Sabau

Proceedings Volume 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X; 1171830 (2020) https://doi.org/10.1117/12.2572205
Event: Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies 2020, 2020, Online Only

Abstract

For the naval field there are two major problems related to the existence of microorganisms: the deposition of Biofouling and the treatment of ballast water. The first problem is strictly related to corrosion with an important economic impact on maintenance costs. In accordance with new IMO (International Maritime Organization) regulations, different green technologies have been proposed for solving this particular issue, among them being also considered the technology based on plasma discharge produced at low pressure. The proposed study concerns the opportunity of atmospheric plasma treatment for naval steel preparation or conditioning. Five different treatments, with three types of plasma working under different gases, have been used. Their effects were evaluated based on microbiological analysis. These analyses concern the biological contamination of each sample by bacteria control at 2 different moments of time. For this purpose, the Gram-negative bacteria Escherichia coli has been used, because it is one of the most important microbial indicators according to Ballast Water Performance Standard D2 (http://www.imo.org). Three different types of electric discharges were used as non-thermal plasmas for the surface treatment.

Citation Download Citation

S. Ghita, B. Hnatiuc, M. Hnatiuc, and A. Sabau "Biological contamination of naval steel surface after non-thermal plasma treatment", Proc. SPIE 11718, Advanced Topics in Optoelectronics, Microelectronics and Nanotechnologies X, 1171830 (31 December 2020); https://doi.org/10.1117/12.2572205

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