Ground jatropha hull samples were used to estimate the proximate analysis. The f
ID: 499397 • Letter: G
Question
Ground jatropha hull samples were used to estimate the proximate analysis. The following are the data from the experiment: An initial sample weighing 2.9657 g was used and placed in the drying oven set at 103 degree C overnight until the final weight became 2.6938 g. About 0.9101 g of bone-dry samples were placed in the tube furnace set at 950 degree C for 7 min, and the resulting weight of the product was 0.2659 g. The same sample was then placed in a muffle furnace set at 600 degree C for 4 h with a resulting final ash weight of 0.0142 g. Calculate the proximate analysis for this sample and also report the values on an as-received basis as well. Calculate the air-to-fuel ratio for the complete combustion of propane (C_3H_8) in air.Explanation / Answer
From 1st step, % of moisture can be calculated.
% moisture = [(2.9657-2.6938)/2.9657] *100 = 9.17 %
From 2nd step, % volatile matter can be calculated.
% volatile content = [(0.9101-0.2659)/0.9101] *100 = 70.78 %
From 3rd step, % ash content can be calculated.
% ash content = [(0.2659-0.0142)/0.0142] *100 = 17.73 %
Fixed carbon = % carbon = 100 - (9.17+70.78+17.73) = 2.32 %
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