Rony
Moderator
Gypsum drywall, also referred to as wallboard, is one of the major components of
the construction and demolition (C&D) waste stream. Drywall consists of a gypsum
(CaSO4· H2O) core (90% by weight) with paper facing and backing (10% by weight). It is
an excellent material for interior walls in structures because of its superior fire resistant
properties and ease in construction. The disposal of gypsum drywall in landfills, however,
may result in the production of hydrogen sulfide (H2S), an odorous and toxic gas
(Fairweather and Barlaz, 1998). In Florida, the occurrence of odors at C&D debris
landfills has resulted in numerous complaints from local residents and in some cases has
required remedial action.
the construction and demolition (C&D) waste stream. Drywall consists of a gypsum
(CaSO4· H2O) core (90% by weight) with paper facing and backing (10% by weight). It is
an excellent material for interior walls in structures because of its superior fire resistant
properties and ease in construction. The disposal of gypsum drywall in landfills, however,
may result in the production of hydrogen sulfide (H2S), an odorous and toxic gas
(Fairweather and Barlaz, 1998). In Florida, the occurrence of odors at C&D debris
landfills has resulted in numerous complaints from local residents and in some cases has
required remedial action.