期刊
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION
卷 14, 期 10, 页码 1010-1023出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15226514.2011.649435
关键词
biofuels; dendroremediation; Eucalyptus amplifolia; Eucalyptus grandis; Populus deltoides
资金
- Water Quality Department of the City of Tallahassee, Florida
Various progenies of Eucalyptus grandis and E. amplifolia, and clones of Populus deltoides, were evaluated for plant removal of nitrogen (N) and phosphorus (P) for 26months at a municipal waste spray field in north Florida. Tertiary treated waste water containing 2.73mg L-1 nitrate N and 0.30 mg L-1 total P was applied using sprinkler irrigation (93.8 m(3) ha(-1) d(-1)) to fast growing trees utilized for bioenergy. Eucalyptus amplifolia and E. grandis survived and grew very poorly as the result of severe winter injury in two successive years and were not evaluated for nutrient removal. Survival and growth of P. deltoides demonstrated suitability for phytoremediation, and selected clones were evaluated for biomass and nutrient content. Removals of total N (TN) and total P (TP) were greatest for main stem (36% and 44%, respectively) and foliage (44% and 36%, respectively). Low biomass producing clones generally had higher nutrient concentrations, but high biomass producing clones removed more TN and TP. Approximately 789 kg ha(-1) TN and 103 kg ha(-1) TP were removed by the highest biomass producing P. deltoides clone, representing 215% of N and 615% of P inputs.
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