Biogas Adsorption-B ased Sep aration by Metal O rganic Fr ameworks: a Gra nd Cano nical Monte Carlo S tudy

Biogas typically refers to a ga s produced by the biological break down of organic matter in the absen ce of oxyge n. Typical c omposition of biogas is methane (۵ ۰–۷۵ %) carbon dioxide (۲۵– ۵۰ %) nitrogen (۰–۱۰ %) hydrogen (۰–۱ %) hydrogen sulfide (۰–۳ %) [۱], however, in some cases, biogas con tains siloxan es.The com position of biogas vari es depending upon the origin of the anaerobic digestion pr ocess. Landfill gas typi cally has m ethane concentrations around ۵۰%. Advanced waste treat ment technologies can produce bio gas with ۵۵–۷۵% methane,which for reactors with free liquids can be increase d to ۸۰-۹۰ % methane using in-situ gas purifi cation techniques. As-produced, biogas also con tains water vapor. The fractional vo lume of water vapor is a function of biogas temperature; correction of measured gas volume fo r both water vapor content and thermal expansion is easily done via a si mple mathematic algorithmwhich yields the standardized volume of dry bio gas [۲, ۳]. The exis tence consid erable amount sulfur compounds in biogas is caused to t his type of gas would b e the most harmful components. So, the sep aration of sulfur compounds in particular; sulfur dioxide, hydrogen sul¿dethrough the physical adsorptionhas been considered by many scientific researchers and they try to find new materials to remov e gas emissions from human living environmen ts. This research intends to study t he biogas ad sorption-based separation by using a MOF and powerful molecular simulation tool s.

کلیدواژه ها:

Separation ، GCMC ، Biogas ، MOF ، Sulfur.