​Electrochemical sulfur production from treating petroleum produced water.

An electrochemical cell was used to remove sulfides from synthetic petroleum produced water (PPW). The cell was run for over 2 months in continuous mode. Sulfides were converted to sulfur at anode with an average conversion rate of 65%. Due to the use of a cation exchange membrane to separate cathodic and anodic chambers, along with sulfide removal conductivity and TDS reduction also took place. Conductivity and TDS reduced by 49.27% and 44.79% respectively on anode and was followed by caustic generation at cathode. Thus, in this communication treatment of PPW along with sulfur and caustic generation is being proposed.​