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.

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.

Experimental Investigation of Performance and Emission Parameters Changes on Diesel Engines Using Anisole Additive

2014 ◽  
Vol 490-491 ◽  
pp. 987-991
Author(s):  
Mustafa Kaan Baltacioğlu ◽  
Kadi̇r Aydin ◽  
Ergül Yaşar ◽  
Hüseyi̇n Turan Arat ◽  
Çağlar Conker ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Specific Fuel Consumption ◽  
Compression Ignition Engine ◽  
Gas Emissions ◽  
Performance And Emission

In this study, effect of anisole additive into the diesel fuel on performance and emission parameters of diesel engines was investigated. Instead of structural changes which are more difficult and expensive, development of fuel technologies is preferred to provide reduction on exhaust gas emissions which are harmful to environment and human health. Therefore, in this experimental study, anisole was used as additive into diesel fuel with the volumetric ratio of 1,5%, 3% and 5%. The performance characteristics and exhaust emissions of a four cylinder, four stroke, naturally aspirated, water cooled, direct injection compression ignition engine fueled with modified fuels were analyzed. Engine was subjected constant speed, full load conditions during tests. Engine power, torque, specific fuel consumption, carbon monoxide, nitrogen oxide and carbon dioxide emissions were measured and results were evaluated. Changes in performance parameters were negligible for all ratios of modified fuels except specific fuel consumption. Finally, while carbon monoxide gas emissions were increased with anisole additive, carbon dioxide and nitrogen oxide gas emissions were decreased.

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 Correlation between air flow rate and pollutant concentrations during two-stage oak log combustion in a 25 KW residential boiler

2016 ◽  
Vol 37 (3) ◽  
pp. 419-428
Author(s):  
Marek Juszczak
Keyword(s):  
Carbon Monoxide ◽  
Nitrogen Oxide ◽  
Oxygen Concentration ◽  
Flow Rate ◽  
Flue Gas ◽  
Air Flow ◽  
Air Flow Rate ◽  
Pollutant Concentrations ◽  
Oxide Concentration ◽  
Nitrogen Oxide Concentration

Abstract It can be expected that there is a considerable correlation between combustion air flow rate and the concentrations of carbon monoxide, hydrocarbons and nitrogen oxide in the flue gas. The influence of temperature and oxygen concentration in the combustion zone on the concentrations of carbon monoxide, hydrocarbons and nitrogen oxide in the flue gas, for high and low combustion air flow, was analysed. Oxygen concentration for which the concentration of carbon monoxide is the lowest was determined, as well as the mutual relation between carbon monoxide and nitrogen oxide concentration.

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