USE OF MUNICIPAL SOLID WASTE INCINERATION BOTTOM ASH FOR THE REMOVAL OF HYDROGEN SULPHIDE (H₂S)

Abstract

Hydrogen sulphide (H2S) is a common malodorous gas causing many problems of odour and industrial atmospheric emissions potentially harmful to health. Québec City has mandated the Centre de Recherche Industrielle du Québec to determine the capacity of the bottom ash (BA) produced by its municipal solid waste (MSW) incinerator for the elimination of H2S. Tests carried out under controlled conditions (laboratory prototype consisting of three reactors containing respectively 10, 20 and 30 cm BA beds) over a total period of 1750 h (~73 days) established that the elimination capacity of demetalized bottom ash produce by the Québec City MSW incinerator varies between 77 ± 13 and 121 ± 20 g H2S /kg dry BA. These results are considerably higher than those published by other authors and demonstrate the potential of this material for various industrial applications (i.e. treatment of landfill gas, pretreatment of biogas produced by anaerobic digestion, etc.) in accordance with the principles of industrial ecology.

Use of Alternative Cover Materials to Control Surface Emissions (H2S and VOCs) at an Engineered Landfill

“…The different materials tested here have already been subjected to a variety of scientific studies, which demonstrated their capacity for removing H 2 S and other foul-smelling gaseous contaminants. For example, MSWI bottom ash, because it is alkaline, was used in several studies, and the results indicate that this material would have a strong affinity for certain sulfur compounds and for CO 2 (Mostbauer et al, 2012;Tirnoveanu, 2004;Turgeon et al, 2017).…”