OctaneRender® can render Blender particles by activating the Use as Octane Sphere Primitive parameter located in the Particles tab (figure 1). 



Particles



Figure 1: Activating particles to be rendered with Octane



Particles



Figure 2: Blender particles rendered with Octane


The emitter object can be hidden by activating the Hide Mesh parameter in the Octane Mesh Properties rollout located in the Data tab (figure 3).



Particles



Figure 3: Hiding the emitter mesh object