Impact of micelles on the biocidal efficiency in a diesel–water interface |
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| Authors: | N. Muthukumar S. Maruthamuthu A. Ilangovan N. Palaniswamy |
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| Affiliation: | 1. Central Electrochemical Research Institute, Karaikudi—630 006, India;2. Central Electrochemical Research Institute, Karaikudi—630 006, IndiaCentral Electrochemical Research Institute, Karaikudi—630 006, India.;3. School of Chemistry, Bharathidasan University, Trichirappalli—620024, India |
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| Abstract: | 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. Copyright © 2007 John Wiley & Sons, Ltd. |
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| Keywords: | biocide micelle interface surfactants |
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