A process for the preparation of a liquid fuel

A process for the preparation of a liquid fuel and resulting fuel including a sulfur and nitrogen capturing additive consisting substantially of a first ingredient Na , a second ingredient, Fe and a third ingredient comprising one or more of Mg , Ba , Ca , Li , K wherein Na is present in an amount of less than or equal to 40 wt.% based on the total weight of the water soluble additive, Fe is present in an amount of greater than or equal to 0.4 wt.% based on the total weight of the water soluble additive with the balance thereof being substantially said third ingredient wherein the ratio of Na and Fe is effective to reduce sulfur oxide and nitrogen oxide formation and emissions to acceptable levels.