10. An oil pipeline burst and spreads oil over a hectare. You are asked to help
ID: 114891 • Letter: 1
Question
10. An oil pipeline burst and spreads oil over a hectare. You are asked to help with the dleanup by devising a method to treat the soil so soil miaroorganisms will decompose the oil. By reviewing the results of research on dleaning up pet mirobial activity and thus accelerate decomposition of the oil. You determine that nitrogen should be you find that the oil has moved to a depth of 18 am and is present in this layer of soil at a concentration of 1500 mgoilkg soil. You also determine that the bulk density of this 18-am layer is 1.75 Mg'm2. You decide to use ammonium nit rate (NIN), 34% nitrogn) as the nitrogen source. (4 points total) a. What is the volume (m2) of contaminated soil? (1 pts) b. What is the weight (Mg) of contaminated soil? (1 pts) G. How many kg of nitrogen is required? (1 pts) d· How many kg of ammonium nitrate isrequired?(1 pts) (Hints use 34-00 for ammonium nitrate)Explanation / Answer
a) The volume of contaminated soil is 10000 m3.
b) The weight(mg) of contaminated soil is 1500 mg oil/kg soil.
c) nitrogen required is 3.5 kg for every 100kg of oil.
d) if 100N are 100 units of nitrogen (as an element), the content of N in NH4NO3 is 34% so if we divide 100 by 0.34, then we obtain 294 which is the amount of fertilizer that will provide 100 units of N. so 294kg/ha of ammonium nitrate is require.
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