Thiosulfate salts advantages

It is claimed that side reactions, such as the formation of thiosulfate and sulfate ions from hydrosulfide ions, are minimized because the rapid reaction between H2S and iron ferrate prevents the buildup of hydrosulfide ions in the solution. This is a distinct advantage over processes where the purging and disposal of thiosulfate salts and the requirements for chemical makeup can represent significant cost items. 

---