Evaluation of the soluble fraction of B100 biodiesel and S500 diesel in seawater using Experimental Design

Biodiesel is considered a clean and renewable energy source, however it important to know the environmental impacts caused by water-soluble fraction (WSF) of this fuel, in event spill. The objective research was evaluate seawater-soluble biodiesel (B100) compared diesel (S500). A factorial design used carry out experiments WSF's, varying type fuel contact time between oil water (O/W) from 1h 24h. mortality rate (%) Mysidopsis juniae concentration total hydrocarbons (TPH) were as response variables. results obtained demonstrate that showed greater toxicity, with an average 98.4 % TPH 475.8 µg/L fraction. On other hand, did not present significant toxicity exposure organisms, even after 24 hours contact, but can still cause risks cases spillage (average 15.0%). empirical models using experimental methodology able satisfactorily estimate concentrations WSF, precision above 99%, correlation coefficients (R²) 0.9963 0.9970. Pure biodiesel, due its low lethality biodegradable ecologically favorable proposal causing less seawater.