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Phytoremediation of lead in soil

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Indian mustard (brassica juncea) can be used for phytoremediation of lead in soil because it has the ability to hyper accumulate lead by a factor of 17. The average crop yield is about 4.0 kg per square metre.

a) Calculate the expected plant concentration of lead if the soil contains 280 ppm.

b) What mass of lead would potentially be recovered from a crop planted on one square kilometre of soil with 280 ppm lead?

c) Another plant has a lead hyper accumulation factor of 34, but the crop yield is 2.8 kg per square metre. Is this plant a better alternative to Indian mustard for phytoremediation of lead? Show calculations.

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Solution Preview

Indian mustard (brassica juncea) can be used for phytoremediation of lead in soil because it has the ability to hyper accumulate lead by a factor of 17. The average crop yield is about 4.0 kg per square metre.

a) Calculate the expected plant concentration of lead if the soil contains 280 ppm
280 ppm x 17 = 4760 ...

Solution Summary

How different concentrations of lead and abundance of harvest affect the choice in which plants to use for phytoremediation of lead in soil are examined. The expected plant concentration of lead if the soil contained 280 ppm is calculated.

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