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Automatic carbon dioxide-methane gas sensor based on the solubility of gases in water.

Cadena-Pereda RO, Rivera-Muñoz EM, Herrera-Ruiz G, Gomez-Melendez DJ, Anaya-Rivera EK - Sensors (Basel) (2012)

Bottom Line: Biogas methane content is a relevant variable in anaerobic digestion processing where knowledge of process kinetics or an early indicator of digester failure is needed.The device described in this work was used for determining the composition of binary mixtures, such as carbon dioxide-methane, in the range of 0-100%.The design and implementation of a digital signal processor and control system into a low-cost Field Programmable Gate Array (FPGA) platform has permitted the successful application of data acquisition, data distribution and digital data processing, making the construction of a standalone carbon dioxide-methane gas sensor possible.

View Article: PubMed Central - PubMed

Affiliation: Laboratorio de Biotrónica, Departamento de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas S/N, Querétaro 76010, Mexico. omar.cadena@upq.edu.mx

ABSTRACT
Biogas methane content is a relevant variable in anaerobic digestion processing where knowledge of process kinetics or an early indicator of digester failure is needed. The contribution of this work is the development of a novel, simple and low cost automatic carbon dioxide-methane gas sensor based on the solubility of gases in water as the precursor of a sensor for biogas quality monitoring. The device described in this work was used for determining the composition of binary mixtures, such as carbon dioxide-methane, in the range of 0-100%. The design and implementation of a digital signal processor and control system into a low-cost Field Programmable Gate Array (FPGA) platform has permitted the successful application of data acquisition, data distribution and digital data processing, making the construction of a standalone carbon dioxide-methane gas sensor possible.

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Related in: MedlinePlus

The experimental data after polynomial linearization (run 1 to run 5). In addition, a plot of the mathematical model with 4 moles of absorption liquid and a plot of the Calibration Sample are shown.
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f5-sensors-12-10742: The experimental data after polynomial linearization (run 1 to run 5). In addition, a plot of the mathematical model with 4 moles of absorption liquid and a plot of the Calibration Sample are shown.

Mentions: Figure 5 shows the curves of the same five runs from Figure 4 along with the plots for CH4_4 and the Calibration Sample, but using polynomial linearization Equation (21). As can be seen, the linearized plots move away from the CH4_4 curve and trend toward the Calibration Sample plot.


Automatic carbon dioxide-methane gas sensor based on the solubility of gases in water.

Cadena-Pereda RO, Rivera-Muñoz EM, Herrera-Ruiz G, Gomez-Melendez DJ, Anaya-Rivera EK - Sensors (Basel) (2012)

The experimental data after polynomial linearization (run 1 to run 5). In addition, a plot of the mathematical model with 4 moles of absorption liquid and a plot of the Calibration Sample are shown.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472854&req=5

f5-sensors-12-10742: The experimental data after polynomial linearization (run 1 to run 5). In addition, a plot of the mathematical model with 4 moles of absorption liquid and a plot of the Calibration Sample are shown.
Mentions: Figure 5 shows the curves of the same five runs from Figure 4 along with the plots for CH4_4 and the Calibration Sample, but using polynomial linearization Equation (21). As can be seen, the linearized plots move away from the CH4_4 curve and trend toward the Calibration Sample plot.

Bottom Line: Biogas methane content is a relevant variable in anaerobic digestion processing where knowledge of process kinetics or an early indicator of digester failure is needed.The device described in this work was used for determining the composition of binary mixtures, such as carbon dioxide-methane, in the range of 0-100%.The design and implementation of a digital signal processor and control system into a low-cost Field Programmable Gate Array (FPGA) platform has permitted the successful application of data acquisition, data distribution and digital data processing, making the construction of a standalone carbon dioxide-methane gas sensor possible.

View Article: PubMed Central - PubMed

Affiliation: Laboratorio de Biotrónica, Departamento de Investigación y Posgrado, Facultad de Ingeniería, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas S/N, Querétaro 76010, Mexico. omar.cadena@upq.edu.mx

ABSTRACT
Biogas methane content is a relevant variable in anaerobic digestion processing where knowledge of process kinetics or an early indicator of digester failure is needed. The contribution of this work is the development of a novel, simple and low cost automatic carbon dioxide-methane gas sensor based on the solubility of gases in water as the precursor of a sensor for biogas quality monitoring. The device described in this work was used for determining the composition of binary mixtures, such as carbon dioxide-methane, in the range of 0-100%. The design and implementation of a digital signal processor and control system into a low-cost Field Programmable Gate Array (FPGA) platform has permitted the successful application of data acquisition, data distribution and digital data processing, making the construction of a standalone carbon dioxide-methane gas sensor possible.

Show MeSH
Related in: MedlinePlus