Hyperion process in which H2S involved under exothermic process is also a option.But Silica and Na-K-Ca geothermometers widely used for the evaluaton of reservoir temperature of geothermal system.

Thank you for your answer. I asked little bit wrong I guess. I meant, what are the abatement methods for H2S in a geothermal power plants for increase the efficiency and decrease the environmental impacts?(such as after the condenser .... method before the cooling tower .... method or some physical membranes.) @virendrakumarsaxena

Appreciated your remark. Thanks.