title: The biocidal effect of a novel synthesized gemini surfactant on environmental sulfidogenic bacteria: planktonic cells and biofilms.
abstract: A cationic gemini surfactant was synthesized and characterized. The surfactant was successfully applied as a biocide against environmental sulfidogenic bacteria in the bulk phase (planktonic) and on the surface (biofilm). The activity of the synthesized surfactant was discussed based on the redox potential and the sulfide productivity in the bulk phase. The cultivated biofilm structure analysis and corrosion rate were estimated on the metal surface. The lowest metal corrosion rate was recognized at a concentration of 1mM with a metal corrosion inhibition efficiency of 95%. The synthesized gemini surfactant prevented the biofilm formation at a concentration of 0.1mM. The synthesized gemini surfactant displayed a broad spectrum antibacterial activity against Gram-positive and Gram-negative bacteria.
authors.affiliation: Technical University of Munich, Chair of Urban Water Systems Engineering, Am Coulombwall, 85748 Garching, Germany. Electronic address: labena.labena@gmail.com.
authors.forename: A
authors.initials: A
authors.lastname: Labena
authors.affiliation: Egyptian Petroleum Research Institute (EPRI), Nasr City, Cairo, Egypt.
authors.forename: M A
authors.initials: MA
authors.lastname: Hegazy
authors.affiliation: Karlsruhe Institute of Technology, Engler-Bunte-Institut, Chair for Water Chemistry and Water Technology, Engler-Bunte-Ring 1, 76121 Karlsruhe, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Horn
authors.affiliation: Technical University of Munich, Chair of Urban Water Systems Engineering, Am Coulombwall, 85748 Garching, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Müller
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects*; D018441:Biofilms / Q000187:drug effects*; D003343:Corrosion; D010084:Oxidation-Reduction; D010933:Plankton / Q000187:drug effects*; D013501:Surface-Active Agents / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D013501:Surface-Active Agents
keywords: Biofilm; Microbiological corrosion; Mild steel; Weight loss