Purity and Poison Gas: Investigating the Relationship between Gypsum Purity and Hydrogen Sulphide Production under Anaerobic Conditions

Calcium Sulphate (CaSO4) more commonly known as gypsum is a naturally occurring white crystalline mineral that has many different uses and applications. When water is added to gypsum, the resulting gypsum paste can be moulded and shaped into various forms and dried to maintain its shape.