Measurement of enthalpies of mixing in gaseous phase for the binary system carbon dioxide - hydrogen sulphide by an isothermal flow calorimeter

1983 ◽  
Vol 61 (2) ◽  
pp. 241-245 ◽  
Author(s):  
Alpha O. Barry ◽  
Serge C. Kaliaguine ◽  
Rubens S. Ramalho
Keyword(s):  
Carbon Dioxide ◽  
Binary System ◽  
Hydrogen Sulphide ◽  
Gaseous Phase ◽  
Isothermal Flow ◽  
Flow Calorimeter ◽  
Enthalpies Of Mixing

RUMEN GAS ANALYSIS BY GAS-SOLID CHROMATOGRAPHY

1961 ◽  
Vol 41 (2) ◽  
pp. 187-196 ◽  
Author(s):  
J. M. McArthur ◽  
J. E. Miltimore
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Hydrogen Sulphide ◽  
Sample Volume ◽  
Gas Analysis ◽  
Complete Analysis ◽  
Thermal Detector ◽  
Thermal Detection ◽  
Methane Carbon

Methods are described for sampling and analysing rumen gases. The analysis requires less than 15 minutes for the determination of hydrogen, oxygen, nitrogen, methane, carbon monoxide, carbon dioxide, and hydrogen sulphide, i.e., for all gases occurring in the rumen. The method is sensitive and requires only a small quantity of sample, and the sample volume need not be known. The presence of water or other vapours in the sample does not influence the results. Relative thermal detector responses have been determined for gases which occur in the rumen. These eliminate the necessity for the calibration of gas chromatographs using thermal detection. The first complete analysis of rumen gas is presented.

scholarly journals Performance Evaluation of Design AD System Biogas Purification Filter

2018 ◽  
Vol 3 (1) ◽  
pp. 17-27 ◽  
Author(s):  
Ejiroghene Kelly Orhorhoro ◽  
Oghenero Wilson Orhorhoro ◽  
Eruero Victor Atumah
Keyword(s):  
Carbon Dioxide ◽  
Performance Evaluation ◽  
Water Vapour ◽  
Hydrogen Sulphide ◽  
Activated Charcoal ◽  
Preliminary Test ◽  
Decision Matrix ◽  
Percentage Composition ◽  
Detail Design ◽  
Biogas Purification

Biogas purification which is the removal of impurities so as to improve the efficiency of gas produced, ensure the safety of end users and prolong the life of the equipment cannot be neglected. This paper is focused on the design and performance evaluation of AD system biogas purification filter. Three different conceptual designs were generated from possible design consideration, feasibility study and preliminary test and with the help of decision matrix; the best conceptual design was selected from which the purification filter was fabricated. The selected concept for detail design was a transparent polyethene cylindrical purification filter fitted with local iron sponge containing activated charcoal and local potash. The reagents were arranged in this order; local potash for the removal of water vapour and carbon dioxide followed by activated charcoal which serves as a purifying agent for hydrogen sulphide. The results obtained showed reduction in percentage composition of hydrogen sulphide (H2S), carbon dioxide, and water vapour. On the other hand, there was an increase in percentage composition of methane (CH4) which is an indication of improvement in methane production after purification. The outcomes of the results obtained were satisfactory and the combination of local potash and activated charcoal was adequate for biogas purification.

scholarly journals IsochoricPVTxMeasurements for the Carbon Dioxide + 1,1-Difluoroethane Binary System

2007 ◽  
Vol 52 (4) ◽  
pp. 1258-1261 ◽  
Author(s):  
Giovanni Di Nicola ◽  
Fabio Polonara ◽  
Giulio Santori ◽  
Roman Stryjek
Keyword(s):  
Carbon Dioxide ◽  
Binary System

High-Pressure Phase Equilibria of Carbon Dioxide + 1-Octanol Binary System

2018 ◽  
Vol 63 (4) ◽  
pp. 1109-1122 ◽  
Author(s):  
Sergiu Sima ◽  
Simona Ioniţă ◽  
Catinca Secuianu ◽  
Viorel Feroiu ◽  
Dan Geană
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Binary System ◽  
Phase Equilibria ◽  
High Pressure Phase ◽  
Pressure Phase

Enthalpies of mixing in ternary Al–Gd–Mn liquid alloys

2021 ◽  
Vol 112 (9) ◽  
pp. 735-742
Author(s):  
Michael Ivanov ◽  
Natalia Usenko ◽  
Natalia Kotova
Keyword(s):  
Binary System ◽  
Ternary System ◽  
Liquid Alloys ◽  
Enthalpies Of Mixing ◽  
Minimum Value ◽  
Isoperibolic Calorimetry ◽  
Wide Range ◽  
Constituent Binary

Abstract The enthalpies of mixing in liquid alloys of the ternary Al–Gd–Mn system were determined over a wide range of compositions by means of isoperibolic calorimetry at 1650 K. The measurements of the partial enthalpies of components were performed along five sections: for the ΔH̅ Al (sections with x Gd/x Mn = 0.30/0.70 and 0.65/0.35 for x Al changed from 0 up to 0.30); for the ΔH̅ Gd (x Al/x Mn = 0.80/ 0.20 and 0.50/0.50 for x Gd changed from 0 up to 0.30); for the ΔH̅ Mn (x Al/x Gd = 0.29/0.71 for x Mn changed from 0 up to 0.26). The enthalpies of mixing in the ternary system were found to be exothermic and steadily increasing in absolute values from the Mn corner towards the Al–Gd constituent binary system, reaching the minimum value of approximately – 37 kJ · mol–1 in the vicinity of the Al0.6Gd0.4 composition, evidently related to the formation of stable Al2Gd phase.

Solubility of the Ketoconazole (an Antifungal Drug) in Supercritical Carbon Dioxide and Menthol as a Cosolvent (Ternary System): Experimental Data and Empirical Correlations

2021 ◽  
Author(s):  
Gholamhossein Sodeifian ◽  
Seyed Ali Sajadian ◽  
Fariba Razmimanesh ◽  
Seyed Mojtaba Hazaveie
Keyword(s):  
Experimental Data ◽  
Carbon Dioxide ◽  
Binary System ◽  
Supercritical Carbon Dioxide ◽  
Ternary System ◽  
Drug Solubility ◽  
Analysis Method ◽  
Empirical Correlations ◽  
Semiempirical Models ◽  
Supercritical Carbon

Abstract One of the main steps in choosing the drug nanoparticle production processes by supercritical carbon dioxide (SC-CO2) is determining the solubility of the solid solute. For this purpose, the solubility of Ketoconazole (KTZ) in the SC-CO2, binary system, as well as in the SC-CO2-menthol (cosolvent), ternary system, was measured at 308–338 K and 12–30 MPa using the static analysis method. The KTZ solubility in the SC-CO2 ranged between 1.70×10− 6 and 8.02×10− 4, while drug solubility in the SC-CO2 with cosolvent varied from 2.7×10− 5 to 1.96×10− 4. This difference indicated the significant effect of menthol cosolvent on KTZ solubility in the SC-CO2. Moreover, KTZ solubilities in the two systems were correlated by several empirical and semiempirical models. Among them, Sodeifian et al., Bian et al., MST, and Bartle et al. models can more accurately correlate experimental data for the binary system than other used models. Also, the Sodeifian and Sajadian model well fitted the solubility data of the ternary system with AARD,%= 6.45, Radj= 0.995.

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