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I don't understand. The plants are fed by a solar still, so they are not in contact with the water. What are they supposed to do that is useful?
by cjensen 11y ago
I don't understand. The plants are fed by a solar still, so they are not in contact with the water. What are they supposed to do that is useful?
- marcosdumay 11y agoTheir roots are in contact with the water, or at least with soacked soil. Looks like an expensive and inefficient version of placing aquatic plants there. Maybe there's no good aquatic plant adapted to there.
- hesparrow 11y agoOften plants will take up the toxin through their roots and sequester it in their aerial tissues. In this case the tissue could be harvested (and then perhaps incinerated) and the pollution will be removed from the canal. If aquatic plants were used and they didn't fully degrade the pollutants, then the waterway would be still contaminated.