Making biogas desulphurisation more effective by using surfactants

Abstract

This work, studying three surfactants, has proved that if they are added in an amount below 0.1 wt. % to the washing solution of the Fe-EDTA complex capturing hydrogen sulphide from biogas, it is possible to reduce the required amount of oxidation air regenerating washing solution up to four times. This can also lead to a significant reduction in the volumes of technological apparatuses, the washing medium, costs of chemical substances. The aim of this research is to make the desulphurisation process more effective, reducing the costs of chemical solvents make the process quicker, reduce the volume of reaction reactors and reduce the energy requirements.

Keywords

• biogas
• desulphurisation
• surfactants
• EDTA
• complex chelate