An oil storage area, abandoned 19 yr ago, had spilled oil on the ground and saturated the soil at a concentration of perhaps 400 mg/kg of soil. A fast food chain wants to build a restaurant there and samples the soil for contaminants only to discover that the soil still contains oil residues at a concentration of 20 mg/kg. a. How long it will take for the soil to be free of all oil contamination after the soil microorganisms destroyed the oil in zero-order rate? b. How long will it take for the soil reach the acceptable contamination oof 1mg/kg at a first-order rate of reaction?
An oil storage area, abandoned 19 yr ago, had spilled oil on the ground and saturated the soil at a concentration of perhaps 400 mg/kg of soil. A fast food chain wants to build a restaurant there and samples the soil for contaminants only to discover that the soil still contains oil residues at a concentration of 20 mg/kg. a. How long it will take for the soil to be free of all oil contamination after the soil microorganisms destroyed the oil in zero-order rate? b. How long will it take for the soil reach the acceptable contamination oof 1mg/kg at a first-order rate of reaction?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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An oil storage area, abandoned 19 yr ago, had spilled oil on the ground and saturated the soil at a concentration of perhaps 400 mg/kg of soil. A fast food chain wants to build a restaurant there and samples the soil for contaminants only to discover that the soil still contains oil residues at a concentration of 20 mg/kg.
a. How long it will take for the soil to be free of all oil contamination after the soil microorganisms destroyed the oil in zero-order rate?
b. How long will it take for the soil reach the acceptable contamination oof 1mg/kg at a first-order rate of reaction?
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