biomass combustion-burning of forewsts, grasslands, agricultural wastes and othe
ID: 865684 • Letter: B
Question
biomass combustion-burning of forewsts, grasslands, agricultural wastes and other biological matter-is recognized as a serious threat to the enviroment. the table below shows the distribution of carbon containing compounds released to the atmosphere worldwide from all combustion sources as well as the portion coming from biomass burning.
compound Metric Tons C Metric tons C
all sources % from biomass
CO2 8700 40
CO 1100 26
CH4 380 10
a) determine the combined annual release( in metric tons) of all three special resulting from biomass combustion and the average molecularweight of the combined gases.
b) find a reference on atmosphere pollution and list the enviromental hazzards associated with CO and CO2 release. what other elements might be released in enviromental hazardous forms if biomass is burned?
Explanation / Answer
a)8700 metric tons ----- 100%
X --------------------------- 40%
X= 3480metric tons CO2
110 metric tons ---------100%
X ---------------------------- 26%
X= 28,6 metric tons CO
380 metric tons ---------100%
X ----------------------------10%
X=38metric tons CH4
MW(CO2)= 44g/mol
MW(CO) = 28g/mol
MW(CH4)= 18g/mol
Average= (44g/mol*40% + 28g/mol*26% + 18g/mol*10)/100 = (1760 + 728+ 180)/100= 26,68g/mol
b)Another atomosphere pollution is coming from oxidation of N2 in combustions, from automovils, fires, refineries glass industry among others.
Hazzards:
Climatics: usually they float and can affect the climat of all earth.
Invernader effect makes the planet hotter
The contaminate air can make people sick from hart or pulmunar diseases.
Another gases that can be liberated are NO, SO2,SO3,N2O,NO,NO2
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