Muthukumar, N. and Maruthamuthu, S. and Ilangovan, A. and Palaniswamy, N. (2007) Impact of micelles on the biocidal efficiency in a diesel–water interface. Surface and interface analysis, 39. pp. 533-541.

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Biodegradation occurs in the diesel/water interface in petroleum product pipelines. The microbial contamination can result in inhibitor/fuel degradation, leading to unacceptable levels of turbidity, filter plugging, storage tank corrosion and stored product souring. Therefore, selection of the biocide/inhibitor plays an important role in the transportation of petroleum products through pipelines. Three biocides (cationic and nonionic)were employed to study the biodegradation in a diesel-water interface. The biocidal efficiency against degradation of diesel was examined by employing Fourier-transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy and gas chromatography mass spectrometry (GC-MS) techniques. Bronopol (2-bromo-2-nitro-propane-1, 3-diol) was found to have higher bactericidal efficiency than N-cetyl-N,N, N-trimethyl ammonium bromide (CTAB) and cetyl pyridinum bromide (CPB). But the cationic biocides (CTAB and CPB) showed good biocidal efficiency at the interface. The data are explained in terms of a model that postulates the formation of a ‘micelle’ at the diesel-water interface.

Item Type: Article
Uncontrolled Keywords: biocide; micelle; interface; surfactants
Subjects: Biocorrosion
Depositing User: ttbdar CECRI
Date Deposited: 27 Mar 2012 10:57
Last Modified: 27 Mar 2012 11:02

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