scholarly journals IoT Based Underground Drainage Monitoring System

2020 ◽  
Vol 9 (3) ◽  
pp. 247-249
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Monitoring System ◽  
Hydrogen Sulphide ◽  
Sulphur Dioxide ◽  
Smart Phone ◽  
Threshold Value ◽  
Ammonia Nitrogen ◽  
Network System

Underground drainage monitoring system plays an important role in keeping the cities clean and healthy. Compared to other countries, India consists of highest number of sewage workers. Exposure of sewage workers to poisonous gases like hydrogen sulphide, sulphur dioxide, carbon monoxide, methane, ammonia, nitrogen oxide increases the death of the sewage workers. The main aim of this project is to design a network system which helps in monitoring poisonous gases present in sewage. Whenever the gas level crosses the threshold value, the information with different gas ppm values is displayed in the smart phone through the app. It also indicates whether it is safe for the manual scavengers to work in the environment or not.

ECOLOGICAL STATE OF THE ATMOSPHERE OF ROSTOV-ON-DON IN 2000–2018

2020 ◽  
Author(s):  
V.L Gaponov ◽  
◽  
T.N. Savuskan ◽  
E.Y. Gaponova ◽  
Y.S. Matyushkin. ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Dioxide ◽  
Nitrogen Oxide ◽  
Sulphur Dioxide ◽  
Maximum Permissible Concentration ◽  
Quantitative Composition ◽  
Ecological State ◽  
Qualitative And Quantitative ◽  
Suspended Substances ◽  
The City

The article reduced a qualitative and quantitative composition of pollutants (suspended substances, sulphur dioxide, carbon monoxide, nitrogen dioxide, nitrogen oxide, formaldehyde, benz (a) pyrene) in the atmosphere of the city of Rostov-on-Don in 2000–2018 year. An assessment of their possible impact on human health when using this criterion is made, as the maximum permissible concentration

scholarly journals Remote Detection for the Presence of NH3, CO2, CH4, H2S, CO and Other Toxic Gases at Various Locations in a Sewer to Alert the User

2021 ◽  
pp. 93-114
Author(s):  
Dr. G. S. Uthayakumar ◽  
F. Albinus Sagay Tomson ◽  
R. Ashwin
Keyword(s):  
Carbon Monoxide ◽  
Sulfur Dioxide ◽  
Hydrogen Sulphide ◽  
Complex Mixture ◽  
Threshold Value ◽  
Industrial Wastes ◽  
Remote Detection ◽  
Threshold Values ◽  
Toxic Gases ◽  
Sewage Systems

Sewer gasis a complex mixture of toxic and nontoxic gases produced and collected in sewage systems by the decomposition of organic household or industrial wastes, typical components of sewage. Sewer gases may include Hydrogen Sulphide, Ammonia, Methane, Sulfur Dioxide, Carbon Monoxide and Nitrogen oxides. This project aims to deliver a system that will be useful in detecting and alerting the user before getting exposed to the toxic gases accumulated inside the sewer. This project uses MQ-135 and MQ-4 sensors to detect various toxic gases such as NH3, CO2, CH4, H2S and CO. This project also has a water level detection sensor which is used to detect the level of water and to reveal any blockage present inside the sewer. These detected gases are measured using the unit “parts per million (ppm)”. It is then compared with the threshold values that have been fed earlier inside the controller. If the detected values are higher than the threshold value, then a warning is sent to the user along with the ppm values. If the detected values are lower than the threshold value, then only the ppm values are shown to the user without any warnings. This project stores the values recorded in a dedicated webpage. This is where the information from our system is displayed to the user.

scholarly journals EFFECT OF BIOMASS BLENDING AND DESULPHURIZATION ON FLUE GAS EMISSIONS OF NIGERIAN SUB BITUMINOUS COAL BRIQUETTES

2020 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Flue Gas ◽  
Sulphur Dioxide ◽  
Bituminous Coal ◽  
Ambient Air ◽  
Gas Emissions ◽  
Binding Material ◽  
Combustion Emission ◽  
Sulphur Dioxide Emission

The effect of blending, briquetting and desulphurization of coal and biocoal briquettes of Nigerian sub bituminous coal is discussed. The flue gas of the coal and biocoal samples were analyzed to study the emission characteristics of nitrogen oxide (NO2), sulphur dioxide (SO2) and carbon monoxide (CO) due to environment concern with the use of coal as either domestic or industrial fuel. Sub bituminous coal sample from eight coal mines and sites in five states in Nigeria were collected. The states and sites included Kogi (Ogboyoga, Okaba), Benue(Owukpa),Nassarawa (Lafia/Obi), Ebonyi (Afikpo) and Enugu (Okpara,Onyeama and Ezinmo).The samples were pulverized and blended with sawdust at various constituent ratios of 0:100, 10:90, 20:80, 30:70, 40:60, 50:50 and 100:0 sawdust : coal. Cassava starch was used as binding material while calcium hydroxide was used as desulphurizing agent for the briquettes. Emission tests for various compositions of the briquettes were carried out and the O2, CO2, CO, NO2 and SO2 of the briquettes were compared. Results showed reduction in combustion emission with increase in sawdust concentration with the reduction in smoke and noxious gas emission. The sulphur dioxide range of the coal briquettes is between 0.018ppm and 0.028ppm which decreased to between 0.025and 0.005 ppm in biocoal briquettes. Same for nitrogen oxide which range between 0.034ppm and 0.038ppm but decreased to between 0.025 and 0.019 ppm and carbon monoxide range of between 0.3ppm and 0.48ppm which decreased to between 0.43ppm and 0.12 ppm in the biocoal briquettes. The 50:50 blends of sawdust to coal for Ogboyaga has the lowest carbon monoxide emission of 0.12 ppm; Okpara has the lowest sulphur dioxide emission of 0.005ppm while Onyeama has the lowest nitrogen oxide emission of 0.019 ppm. These are below the national ambient air quality standards which put sulphur dioxide at 1.4 x 10-1 ppm. The biocoal briquette emits less sulphur dioxide because it contains desulphurizing agent which fixes some of the sulphur that would have gone to the atmosphere to ash. Keywords: biocoal briquettes, blending, flue gas emissions, sub - bituminous coal.

Kinetics of catalytic reduction of nitrogen oxide by carbon monoxide on CuO/Al2O3 catalyst

1983 ◽  
Vol 48 (11) ◽  
pp. 3202-3208 ◽  
Author(s):  
Zdeněk Musil ◽  
Vladimír Pour
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Rate Equation ◽  
Catalytic Reduction ◽  
Zero Order ◽  
Spectroscopic Measurements ◽  
First Order ◽  
Ir Spectroscopic ◽  
Kinetics Of ◽  
Al2o3 Catalyst

The kinetics of the reduction of nitrogen oxide by carbon monoxide on CuO/Al2O3 catalyst (8.36 mass % CuO) were determined at temperatures between 413 and 473 K. The reaction was found to be first order in NO and zero order in CO. The observed kinetics are consistent with a rate equation derived from a mechanism proposed on the basis of IR spectroscopic measurements.

Reduction of sulphur dioxide using carbon monoxide over gold supported catalysts

Gold Bulletin ◽  
2018 ◽  
Vol 51 (4) ◽  
pp. 153-162 ◽  
Author(s):  
Thelma Ngwenya ◽  
Isaac Nongwe ◽  
Linda L. Jewell
Keyword(s):  
Carbon Monoxide ◽  
Sulphur Dioxide ◽  
Supported Catalysts

scholarly journals COMBUSTION PERFORMANCE OF SYNGAS FROM BIOMASS WASTE IN GAS BURNER SYSTEM/PRESTASI PEMBAKARAN SYNGAS DARI SISA BIOJISIM DALAM SISTEM PEMBAKAR GAS

2018 ◽  
Vol 80 (5) ◽  
Author(s):  
Mohd Oryza Mohd Mokhtar ◽  
Mohammad Nazri Mohd Ja’afar ◽  
Mustafa Yusoff ◽  
Mazlan Said ◽  
Muhammad Roslan Rahim ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Combustion Temperature ◽  
Fossil Fuel ◽  
Biomass Waste ◽  
Gas Combustion ◽  
Combustion Performance ◽  
Positive Effects ◽  
Gas Burner

Syngas from biomass residues is an alternative fuel to address the ever-increasing fossil fuel supply problem and the issue of releasing toxic gases from the fossil fuel burning process. Syngas is also a renewable fuel and features environmentally friendly fuel. This study was conducted to investigate the performance of the syngas produced from oil palm shells (PKS) using fluidized bed gasifier. In this study, the produced syngas was tested for its combustion performance from the aspect of gas combustion temperature and resulting emission concentrations such as nitrogen oxide (NOx), carbon monoxide (CO) and sulfur dioxide (SO2). The resulting syngas was studied at different ratio of air velocities to fuels. From the test, the ratio of velocity of air to fuel affects the gas combustion temperature and emission emission concentration. By increasing the air velocity to fuel ratio during the gasification process produces more positive effects primarily in improving the temperature of the gas burner combustion and reducing carbon monoxide (CO) emissions. However, the concentration of sulfur dioxide release (SO2) and nitrogen oxide (NOx) increase.

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.

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