Abstract: The invention relates to a method for the removal of gaseous organo-sulphur compounds, in particular THT, from fuel gas streams. The method comprises bringing the gas stream into contact with an adsorbent, with a clay mineral from the hormite group, such as palygorskite, attapulgite, sepiolite and paramomtmorillonite as adorbent. In particular, the clay mineral is sepiolite and the fuel gas stream comprises natural gas. In this way large gas volumes can be purified for a prolonged period with the aid of an environmenetally friendly and inexpensive adsorbent. The invention also relates to a combination of a gas filter based on a clay mineral from the hormite group and a fuel cell. The invention also relates to a method wherein the clay mineral has been provided with a metal salt or a metal oxide, or a method wherein the clay mineral is combined with a second adsorbent.