In the US and in Europe plasterboard waste disposed of in landfills have allegedly created the dangerous Hydrogen Sulfide Gas (H2S). Hydrogen sulfide is a colourless, flammable, poisonous gas that smells like rotten eggs.

gypsum in landfills

Hydrogen Sulfide gas is very dangerous and in high concentrations is lethal and in low concentration gives a rotten egg smell. The plasterboard and gyprock waste in it self is not dangerous, but when the waste is mixed with organic waste, and exposed to rain in an anaerobic environment, tests have shown that hydrogen sulfide gasses can develop.

For this reason several US states are considering fully or partially banning disposal of plasterboard waste in landfills, whereas the EU have decided to avoid the risk of hydrogen sulfide gasses by regulating that plasterboard waste no longer can be disposed of in simple inert landfills and must be disposed of in controlled landfills in cells where no organic waste is present.

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