Application of Pseudomonas cepacia CCT 6659 Biosurfactant as a Metal Corrosion Inhibitor in a Constructed Accelerated Corrosion Chamber (ACC) DOI Creative Commons
Rita de Cássia F. Soares da Silva, Alexandre Augusto P. Selva Filho, Yslla Emanuelly da Silva Faccioli

et al.

Fermentation, Journal Year: 2024, Volume and Issue: 10(12), P. 602 - 602

Published: Nov. 25, 2024

Corrosion is the deterioration of metals due to environmental exposure. Commercial inhibitors used control corrosion often contain heavy metal salts, which are highly toxic both environment and human health. A biosurfactant produced by bacterium Pseudomonas cepacia CCT 6659 was tested as a inhibitor on carbon steel galvanized iron surfaces. Matrices based plant ingredients with different compositions were in laboratory-constructed accelerated chamber (ACC) simulating critical maritime atmosphere conditions 40 °C, 5% NaCl, 100% humidity. The most stable matrix selected for incorporation concentrations, expressed micellar concentration (CMC), applied surfaces evaluate its ability inhibit corrosion. Additionally, potential low-toxicity additive paint systems, samples coated three biosurfactant-containing commercial paints subjected atmospheric testing coating effectiveness. formulation containing vegetable resin plasticizer, oleic acid, ethanol, CaCO3 chosen incorporate biosurfactant. addition at twice CMC led reduction sample mass loss from 123.6 82.2 g/m2, while plates, decreased 285.9 226.7 g/m2 same concentration. When supplemented biosurfactant, alkyd resin-based (A) ensured less (46.0 g/m2) compared without (58.0 g/m2). Using formulated oil-based (B), 53.0 24.1 that petroleum derivatives (C), it 27.6 g/m2. These results confirm feasibility using biosurfactants biodegradable coatings, reducing need inhibitors.

Language: Английский

Mono- and di-Rhamnolipids mixtures from Pseudomonas aeruginosa for use in extreme conditions of pre- and post-salt oil reservoirs compared with synthetic surfactants DOI
Livia Vieira Araújo de Castilho,

Alan Magalhães Duarte,

Ilson Pasqualino

et al.

Colloids and Surfaces B Biointerfaces, Journal Year: 2024, Volume and Issue: 245, P. 114311 - 114311

Published: Oct. 9, 2024

Language: Английский

Citations

2
Application of Pseudomonas cepacia CCT 6659 Biosurfactant as a Metal Corrosion Inhibitor in a Constructed Accelerated Corrosion Chamber (ACC) DOI Creative Commons
Rita de Cássia F. Soares da Silva, Alexandre Augusto P. Selva Filho, Yslla Emanuelly da Silva Faccioli

et al.

Fermentation, Journal Year: 2024, Volume and Issue: 10(12), P. 602 - 602

Published: Nov. 25, 2024

Corrosion is the deterioration of metals due to environmental exposure. Commercial inhibitors used control corrosion often contain heavy metal salts, which are highly toxic both environment and human health. A biosurfactant produced by bacterium Pseudomonas cepacia CCT 6659 was tested as a inhibitor on carbon steel galvanized iron surfaces. Matrices based plant ingredients with different compositions were in laboratory-constructed accelerated chamber (ACC) simulating critical maritime atmosphere conditions 40 °C, 5% NaCl, 100% humidity. The most stable matrix selected for incorporation concentrations, expressed micellar concentration (CMC), applied surfaces evaluate its ability inhibit corrosion. Additionally, potential low-toxicity additive paint systems, samples coated three biosurfactant-containing commercial paints subjected atmospheric testing coating effectiveness. formulation containing vegetable resin plasticizer, oleic acid, ethanol, CaCO3 chosen incorporate biosurfactant. addition at twice CMC led reduction sample mass loss from 123.6 82.2 g/m2, while plates, decreased 285.9 226.7 g/m2 same concentration. When supplemented biosurfactant, alkyd resin-based (A) ensured less (46.0 g/m2) compared without (58.0 g/m2). Using formulated oil-based (B), 53.0 24.1 that petroleum derivatives (C), it 27.6 g/m2. These results confirm feasibility using biosurfactants biodegradable coatings, reducing need inhibitors.

Language: Английский

Citations

0