The removal of thiols from sour gas streams is a major challenge for the petrol industry. Current treatment methods are based on either chemical oxidation or flaring of thiols. These methods are energy intensive, consume large amounts of chemicals, produce toxic waste and are often economically unfeasible. Previous studies have demonstrated that bioelectrochemical systems enable biological conversions of complex chemicals at high(er) rates. Hence, we postulate that the conversion of thiols is a cost effective and sustainable alternative to current technologies. We will study at what rate and efficiency thiols can be degraded in such a system.