Nitroglycerin (NG) is a nitrate ester used in dynamites, propellants, and medicines and is therefore a common constituent in propellant-manufacturing and pharmaceutical wastewaters. In this study we investigated the reduction of NG with cast iron as a potential treatment method. NG was reduced stepwise to glycerol via 1, 2-and 1, 3-dinitroglycerins (DNGs) and 1-and 2-mononitroglycerins (MNGs). Nitrite was released in each reduction ...