NOVELTY - Process for purification of gas or liquefied gas flows (1) from hydrogen sulfide (H2S) through aqueous solutions containing ferric ions electrochemically regenerated comprises: gas-liquid or liquid-liquid absorption with reaction of gas flow containing hydrogen sulfide in an acid liquid flow (2) containing predominantly ferric ions; a removal of suspended elementary sulfur from the liquid flow (3) leaving the gas-liquid or liquid-liquid absorption; and a regeneration of ferric ions from ferrous ions contained in the acid liquid flow, purified from sulfur, through anodic oxidation in electrolytic cell.    USE - The process is useful for purification of gas, gas mixtures or liquefied gas from hydrogen sulfide through ferric ion solutions electrochemically regenerated.    ADVANTAGE - The process is: continuous or discontinuous purification process; and more versatile and economic and obtaining by-products of high added value.    DETAILED DESCRIPTION - Process for the purification of gas or liquefied gas flows (1) from hydrogen sulfide (H2S) through aqueous solutions containing ferric ions electrochemically regenerated comprises: a gas-liquid or liquid-liquid absorption with reaction of the gas flow containing H2S in an acid liquid flow (2) containing predominantly ferric ions and, in a smaller quantity, ferrous ions, obtaining a from H2S purified gas flow and a liquid flow containing essentially ferrous ions, and in a smaller quantity ferric ions and in which elementary sulfur is suspended; a removal of suspended elementary sulfur from the liquid flow (3) leaving the gas liquid or liquid-liquid absorption; and a regeneration of ferric ions from ferrous ions contained in the acid liquid flow, purified from sulfur, through anodic oxidation in an electrolytic cell.    DESCRIPTION OF DRAWING(S) - The figure shows the process of gas or liquefied gas flow from hydrogen sulfide.    Gas or liquefied gas flow (1)    Acid liquid flow (2)    Liquid flow (4)    Solid phase (6)    Gaseous hydrogen flow (7)