Metal-doped apatitic calcium phosphates: preparation, characterization, and reactivity in the removal of hydrogen sulfide from gas phase
Résumé
With the expansion of human activities, there are more and more living areas
adjacent to industrial and/or agricultural activities such as chemical processes, petroleum
processes, paint finishing, food processing, livestock farming, composting plants etc. Bad
odor is part of several nuisances caused by industrial and/or agricultural activities. Hydrogen
sulfide (H2S) is a typical odorous molecule which causes foul odor at very low concentration.
This molecule is formed in different industrial installations, in particular in coal combustion,
and petrochemical refinery. The separation and/or transformation of H2S from gas phase to
odorless products are important processes for sustainable development.
In this paper, we communicate the preparation of new sorbents for the sorption of H2S
from a synthetic gas effluent. These sorbents consist in an inorganic phase (hydroxyapatite) as
host particles, and well-dispersed particles of a metal oxide as guest particles which are the
active phase for the removal of H2S. At room conditions, iron, lead and zinc doped calcium
phosphates were found to be effective for the removal of H2S. The performance of the
sorbents depends on preparation method and the nature of active phases. This opens new
prospects for the treatment of H2S from gas phase.
Domaines
Génie des procédésOrigine | Fichiers produits par l'(les) auteur(s) |
---|
Loading...