Abstract
Effective emulsification of oil in seawater plays an important role in the marine oil spill remediation process. The negative effects of chemical surfactants have necessitated a search for alternative dispersant that are sustainable and environmentally friendly. After modifying with dodecanol, petroleum hydrocarbon degrading bacteria, Bacillus cereus S-1, was elucidated to produce an extremely stable oil-in-water (o/w) Pickering emulsion, just liking a solid particle emulsifier. In an appropriate concentration range, the presence of dodecanol improved the surface hydrophobicity and wettability of bacterial cells, which was responsible for their adsorption at the oil–water interface. When a sufficient amount of bacteria was added, only a small amount of dodecanol was required to obtain stable emulsions. However, stable emulsion was not prepared with unmodified Bacillus cereus S-1 cells. Scanning electron microscopy (SEM) and confocal laser scanning microscope (CLSM) images indicated that the effective emul...
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