Growth room experiments were conducted to examine terrestrial and wetland-based
phytoremediation approaches as alternatives to biosolids management. Results from both
experiments show that biosolids do not need to be amended with soil to encourage plant
growth and optimize biomass yields. In the terrestrial phytoremediation approach, two
harvests per growth cycle produced greater switchgrass biomass yield than a single
harvest but had no significant effect on cattail biomass yield during the first cycle.
Repeated harvesting also significantly increased mean nutrient uptake in Cycle 1,
reflecting the greater biomass yield from two harvests compared with a single harvest. In
the wetland experiment, nutrient phytoextraction under two harvests was 4.25% of initial
N content and 2.28% of initial P content compared with 2.9% and 1.58%, respectively,
under a single harvest. Terrestrial phytoremediation could be beneficial to small
communities that cannot afford the costly excavation, trucking, and eventual spreading of biosolids on agricultural land.
| Identifer | oai:union.ndltd.org:MANITOBA/oai:mspace.lib.umanitoba.ca:1993/25170 |
| Date | 04 November 2014 |
| Creators | Hassan, Adenike |
| Contributors | Zvomuya, Francis (Soil Science), Goh, Tee Boon (Soil Science) Cicek, Nazim (Biosystems Engineering) Badiou, Pascal (Soil Science) |
| Source Sets | University of Manitoba Canada |
| Detected Language | English |
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