An apparatus for removing contaminants from emissions is provided with a housing shaped as a reverse venturi. The housing includes an entry portion for receiving emissions, an exit portion for expelling emissions, and an enlarged portion disposed therebetween for trapping the contaminants in the emissions. A mass of reactive material is disposed within the enlarged portion and has a reactive outer surface disposed in contact with the emissions. The mass of reactive material contains an amalgam forming metal at the reactive outer surface that chemically binds with the emissions that are passing through the enlarged portion of the housing. Emissions control methods for removing contaminants from gaseous and non-gaseous emissions are also provided. One of the emissions control methods includes passing the gaseous emissions through the reverse venturi apparatus described herein. Another one of the emissions control methods includes treating non-gaseous emissions in a treatment tank containing a sorbent.