Fig. 5: Optimizing conditions for methane hydrate formation in AM-Ice.
From: Rapid conversion of amino acid modified-ice to methane hydrate for sustainable energy storage
a The gas uptake during hydrate formation from tryptophan AM-Ice with various concentrations of tryptophan (300, 1000, 3000, 5000 ppm), as well as from pure water. Each system is tested under 272.7 K and 6 MPa. Each error bar reflects the standard deviation from three individual measurements. b The gas uptake and t90 for tryptophan AM-Ice (3000 ppm tryptophan) obtained for different masses of 10, 20, and 30 g. The inset presents t₉₀ values observed in the three systems. Each system is tested under 272.7 K and 6 MPa. Each error bar reflects the standard deviation from three individual measurements. c The gas uptake and t90 for tryptophan AM-Ice (3000 ppm tryptophan) obtained under different pressures (4, 5 and 6 MPa) at 272.7 K. The inset presents t₉₀ values observed in the three systems. Each error bar reflects the standard deviation from three individual measurements. d The gas uptake and t90 for tryptophan AM-Ice (3000 ppm tryptophan) obtained under different temperatures (271.2, 272.2 and 272.7 K) at 6 MPa. The inset presents t₉₀ values observed in the three systems. Each error bar reflects the standard deviation from three individual measurements.
