PDF Publication Title:
Text from PDF Page: 008
Appl. Sci. 2020, 10, 4692 7 of 19 (a) (b) Figure 3. Regression of the CH4 (a) and CO2 (b) adsorption isotherm from experimental data at various temperatures with MATLAB (Langmuir 3 isotherm). The regressed curves lead to a slight underestimation of the CO2 adsorption balance at pressures above 2.5 bar. The Langmuir isotherm parameters obtained for CH4 and CO2, corresponding to Type I (among the five types) as identified by Brunauer [23], are summarized in Table 3. It should be noted that these values, to which the experimental data are available, have no physical meaning outside the temperature range (298–323 K). Table 3. Langmuir isotherm parameters. Descriptions CH4 CO2 3.1.2. Mass-Transfer Coefficients IP1 (×10−6) IP2 2.876 1918 12.74 1839 IP3 28.77 0.2486 IP4 −1152 626.8 The rigorous transport model is needed to numerically simulate the PSA process for the separation of biogas containing CH4 and CO2. The mass transfer coefficient and the equilibrium adsorption model are the major parameters for verifying the modelling results with experimental data. These parameters were regressed starting from the experimental concentration as a function of time at 308 K, as provided by Cavenati et al. [8]. In this case, 𝑐 = 𝑃⁄𝑅𝑇 (𝑃 = 1 atm, 𝑇 = 308 K). The linear driving force model can be derived into terms of concentration via the following equation: It is possible to derive 𝑞 as By replacing Equation (6) in Equation (3) 𝜕𝑐(𝑡) = K𝑐 − 𝑐(𝑡) 𝜕𝑡 𝑐 = 𝑐 − 𝜀 ∙ 𝑞 (5) ( 6 ) (7) 𝑞 ∗ − 𝑞 = 𝑐 − 𝑐 ( 𝑡 ) ε It is possible to derive the equation to solve the K of methane and carbon dioxide from the available data. The result of the regression is shown in Figure 4.PDF Image | Biogas Six-Step Pressure Swing Adsorption
PDF Search Title:
Biogas Six-Step Pressure Swing AdsorptionOriginal File Name Searched:
applsci-10-04692.pdfDIY PDF Search: Google It | Yahoo | Bing
CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
Heat Pumps CO2 ORC Heat Pump System Platform More Info
CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com (Standard Web Page)