Does the dry wash system clean the biodiesel better than the bubble wash method? Will it remove more caustic than the water wash?
The resin removes all the remaining catalyst, soap & glycerol, but does not remove the methanol, allowing recovery of this methanol from the purified biodiesel via distillation etc. It is indeed much more effective than any type of water wash method, and at very little additional cost, without the generation of large quantities of waste water which presents a treatment/disposal problem.
