Gold Refining Electrolysis

Is possible to refine gold using electrolysis? How?

Yes. it can be. These days a more refined technique Zone refining is used for purifying metals. to purify gold by electrolysis one must use pure Gold cathode and impure metal as anode. the electrolye must be some gold salt e.g. may be AuCl3.

Electrolysis in aqua regia