scholarly journals Methane, carbon monoxide and light non-methane hydrocarbon emissions from African savanna burnings during the FOS/DECAFE experiment

1995 ◽  
Vol 22 (1-2) ◽  
pp. 149-162 ◽  
Author(s):  
B. Bonsang ◽  
C. Boissard ◽  
M. F. Le Cloarec ◽  
J. Rudolph ◽  
J. P. Lacaux
1955 ◽  
Vol 23 (8) ◽  
pp. 1551-1551 ◽  
Author(s):  
V. Mathot ◽  
L. A. K. Staveley ◽  
J. A. Young ◽  
N. G. Parsonage

1961 ◽  
Vol 41 (2) ◽  
pp. 187-196 ◽  
Author(s):  
J. M. McArthur ◽  
J. E. Miltimore

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.


Author(s):  
P. J. Fraser ◽  
P. Hyson ◽  
R. A. Rasmussen ◽  
A. J. Crawford ◽  
M. A. K. Khalil

2019 ◽  
Vol 32 (2) ◽  
pp. 312-317 ◽  
Author(s):  
Ahmad El-Hellani ◽  
Samira Al-Moussawi ◽  
Rachel El-Hage ◽  
Soha Talih ◽  
Rola Salman ◽  
...  

Volume 2 ◽  
2004 ◽  
Author(s):  
Madhuri Jakkaraju ◽  
Vasudha Patri

I. C. Engines consume large amounts of fossil fuel emitting harmful pollutants like carbon monoxide (CO), unburnt hydrocarbons (UBHC), and oxides of nitrogen (NOx). By using a catalytic converter (CC), the carbon monoxide, hydrocarbon emissions can be transformed into less harmful carbon dioxide (CO2) & water vapor (H2O). Currently available CC’s are using costly noble metals like platinum (pt), palladium (pd), rhodium (rh) etc., hence making them expensive. This paper deals with the use of low-cost palletized silver coated alumina as the catalyst element in a CC. In this study, alumina and silver were used in the ratio of 10:1. All tests have been conducted on a stationary S.I. Engine at a constant speed of 1500 r.p.m with and without CC. Also, the performance of the palletized CC in combination with promoters like Bismuth, Cerium and Lanthanum was tested which have shown better results than silver alone as the coating element. It has been experimentally determined that the CO emissions have dropped from 7.25 (% vol) to 3.03(% vol) and the HC values have reduced from 350 ppm to 190 ppm.


2019 ◽  
Vol 31 (8) ◽  
pp. 1303-1317 ◽  
Author(s):  
Ibrahim Yildiz ◽  
Hakan Caliskan ◽  
Kazutoshi Mori

In this paper, the exergy analysis and environmental assessment are performed to the biodiesel and diesel-fueled engine at full 294 Nm and 1800 r/min. The exergy loss rates of fuels are found as 15.523 and 18.884 kW for the 100% biodiesel (BDF100) (obtained from cooking oil) and Japanese Industrial Standard Diesel No. 2 (JIS#2) fuels, respectively. In addition, the exergy destruction rate of the JIS#2 fuel is found as 80.670 kW, while the corresponding rate of the BDF100 is determined as 62.389 kW. According to environmental assessments of emissions and nanoparticles of the fuels, the biodiesel (BDF100) fuel is more environmentally benign than the diesel (JIS#2) fuel in terms of particle concentration and carbon monoxide and hydrocarbon emissions. So, it is better to use this kind of the 100% biodiesels in the diesel engines for better environment and efficiency in terms of the availability and environmental perspectives.


1995 ◽  
Vol 11 (5) ◽  
pp. 1056-1062 ◽  
Author(s):  
Thomas A. Sullivan ◽  
Diane Linne ◽  
Lee Bryant ◽  
Kriss Kennedy

2002 ◽  
Vol 29 (1) ◽  
pp. 687-694 ◽  
Author(s):  
Daniel L. Flowers ◽  
Salvador M. Aceves ◽  
Joel Martinez-Frias ◽  
Robert W. Dibble

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