Open AccessExperimental investigations of methane hydrate in sediment suspensions
Author(s) -
Ikkurti Radhika,
Pinnelli S. R. Prasad,
D. Suresh Babu
Publication year - 2018
Publication title -
international journal of engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2227-524X
DOI - 10.14419/ijet.v7i4.5.21178
Subject(s) - hydrate , clathrate hydrate , methane , isochoric process , chemical engineering , autoclave , sediment , phase (matter) , capillary action , mineralogy , materials science , chemistry , geology , thermodynamics , composite material , organic chemistry , paleontology , physics , engineering
Methane hydrate structural stability and formation, were studied in water suspensions with synthetic clay (44.17nm),SiO2(60.62nm) and zeolite (35.08nm) at different weight percentages (1wt%,10wt%,20wt%) in isochoric method using stirred autoclave. The for- mation kinetics in these sediments greatly differs from those of the bulk hydrate owing to surface and capillary effects in the pores. It has been confirmed that hydrate formation in confined pores is severely restricted due to increased inner capillary pressure. Further- more in principle , the clay particles suspended in water play a negative role in structuring the crystalline hydrate .More specifically, even though the addition of clay enhances the hydrate yield insignificantly, from our results, the addition of sediments did not affect the phase equilibrium much because water exists in excess around clay particles and therefore the hydrate formed in the bulk water phase is much more dominant than that in the pores.