Wireless Monitoring of Volatile Organic Compounds/Water Vapor/Gas Pressure/Temperature Using RF Transceiver

2018 ◽  
Vol 67 (9) ◽  
pp. 2223-2234 ◽  
Author(s):  
Amarjit Kumar ◽  
Nagendra Prasad Pathak
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Pressure ◽  
Rf Transceiver ◽  
Wireless Monitoring ◽  
Volatile Organic

Insights into a “seesaw effect” between reducibility and hydrophobicity induced by cobalt doping: Influence on OMS-2 nanomaterials for catalytic degradation of carcinogenic benzene

2021 ◽  
Author(s):  
chunlan Ni ◽  
Jingtao Hou ◽  
Qian Zheng ◽  
Mengqing Wang ◽  
Lu Ren ◽  
...  
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Catalytic Degradation ◽  
Cobalt Doping ◽  
Volatile Organic

OMS-2 is one of the most promising catalytic nanomaterials for the elimination of volatile organic compounds. However, water poisoning resulting from water vapor inevitably leads to the deactivation of active...

scholarly journals Stability and Selective Vapor Sensing of Structurally Colored Lepidopteran Wings Under Humid Conditions

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3258
Author(s):  
Gábor Piszter ◽  
Krisztián Kertész ◽  
Zsolt Bálint ◽  
László Péter Biró
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Color Change ◽  
Response Times ◽  
Principal Component ◽  
Time Dependent ◽  
Dependent Manner ◽  
Vapor Sensing ◽  
Volatile Organic

Biological photonic nanoarchitectures are capable of rapidly and chemically selectively sensing volatile organic compounds due to changing color when exposed to such vapors. Here, stability and the vapor sensing properties of butterfly and moth wings were investigated by optical spectroscopy in the presence of water vapor. It was shown that repeated 30 s vapor exposures over 50 min did not change the resulting optical response signal in a time-dependent manner, and after 5-min exposures the sensor preserved its initial properties. Time-dependent response signals were shown to be species-specific, and by using five test substances they were also shown to be substance-specific. The latter was also evaluated using principal component analysis, which showed that the time-dependent optical responses can be used for real-time analysis of the vapors. It was demonstrated that the capability to detect volatile organic compounds was preserved in the presence of water vapor: high-intensity color change signals with short response times were measured in 25% relative humidity, similar to the one-component case; therefore, our results can contribute to the development of biological photonic nanoarchitecture-based vapor detectors for real-world applications, like living and working environments.

Gas Phase Adsorption of Volatile Organic Compounds and Water Vapor on Activated Carbon Cloth

1997 ◽  
Vol 11 (2) ◽  
pp. 311-315 ◽  
Author(s):  
Mark P. Cal ◽  
Mark J. Rood ◽  
Susan M. Larson
Keyword(s):  
Activated Carbon ◽  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Gas Phase ◽  
Organic Compounds ◽  
Carbon Cloth ◽  
Activated Carbon Cloth ◽  
Gas Phase Adsorption ◽  
Volatile Organic

Sorbents for treatment of water vapor-air flows to remove volatile organic compounds of radioactive iodine

2009 ◽  
Vol 51 (3) ◽  
pp. 283-286
Author(s):  
S. A. Kulyukhin ◽  
N. A. Konovalova ◽  
I. A. Rumer
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Radioactive Iodine ◽  
Volatile Organic ◽  
Air Flows

Breath analysis of ammonia, volatile organic compounds and deuterated water vapor in chronic kidney disease and during dialysis

Bioanalysis ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 843-857 ◽  
Author(s):  
Simon J Davies ◽  
Patrik Španěl ◽  
David Smith
Keyword(s):  
Chronic Kidney Disease ◽  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Kidney Disease ◽  
Organic Compounds ◽  
Breath Analysis ◽  
Deuterated Water ◽  
Volatile Organic

Effects of Oxygen and Water Vapor on Volatile Organic Compounds Decomposition Using Gliding Arc Gas Discharge

2007 ◽  
Vol 27 (5) ◽  
pp. 546-558 ◽  
Author(s):  
Zh. Bo ◽  
J. H. Yan ◽  
X. D. Li ◽  
Y. Chi ◽  
K. F. Cen ◽  
...  
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Discharge ◽  
Gliding Arc ◽  
Volatile Organic ◽  
Gliding Arc Gas Discharge

Minimization of water vapor interference in the analysis of non-methane volatile organic compounds by solid adsorbent sampling

2002 ◽  
Vol 958 (1-2) ◽  
pp. 219-229 ◽  
Author(s):  
Christine M. Karbiwnyk ◽  
Craig S. Mills ◽  
Detlev Helmig ◽  
John W. Birks
Keyword(s):  
Water Vapor ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Solid Adsorbent ◽  
Volatile Organic

Separation of Volatile Organic Compounds from Water by Pervaporation

MRS Bulletin ◽  
1999 ◽  
Vol 24 (3) ◽  
pp. 50-53 ◽  
Author(s):  
R.W. Baker
Keyword(s):  
Volatile Organic Compounds ◽  
Vapor Pressure ◽  
Organic Compounds ◽  
Driving Force ◽  
Liquid Mixtures ◽  
Vapor Condensation ◽  
Gas Pressure ◽  
Vapor Pressures ◽  
Volatile Organic ◽  
The Difference

Pervaporation is a membrane process used to separate liquid mixtures. Separation is achieved by a combination of evaporation and membrane permeation. As a result, the process offers the possibility of removing dissolved volatile organic compounds (VOCs) from water, dehydrating organic solvents, and separating mixtures of components with close boiling points or azeotropes that are difficult to separate by distillation or other means.A schematic diagram of the pervaporation process is shown in Figure 1. In the example shown, the feed liquid is a solution of toluene in water which contacts one side of a membrane that is selectively permeable to toluene. The permeate, enriched in toluene, is removed as a vapor from the other side of the membrane. The driving force for the process is the difference in the partial vapor pressures of each component in the feed liquid and the permeate gas. This driving force can be increased by raising the temperature of the feed liquid to increase its vapor pressure or by decreasing the permeate gas pressure. The permeate gas pressure can be adjusted by using a vacuum pump, but industrially the most economical method is to cool and condense the vapor. Condensation spontaneously generates a vacuum. The permeate vapor pressure is then determined by the temperature of the permeate condenser and the composition of the permeate liquid generated by cooling and condensing the permeate vapor.Pervaporation membranes are made by coating a thin layer of selective polymer material onto a microporous support.

Sign in / Sign up

Export Citation Format

Share Document