Research Article
Optimization by Response Surface Methodology of Biodiesel Production from Podocarpus falcatus Oil as a Cameroonian Novel Nonedible Feedstock
Figure 4
(a) Response surface contour for the effect of interaction between temperature and time on viscosity (KOH concentration: 1 wt.%). (b) Response surface contour for the effect of the interaction between time and molar ratio on viscosity (KOH concentration: 1 wt.%).
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| (b) |