Growth and nutrient removal of three macrophytes in response to concentrations and ratios of N and P

Wastewater from different sources shows great differences in concentrations and ratios of N and P. In order to choose suitable plant species to remove excess N and/or P from polluted waters, it is important to know the performances of these plants under different N and P concentrations. In this stud...

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Bibliographic Details
Published in:International journal of phytoremediation 2017-07, Vol.19 (7), p.651-657
Main Authors: Liao, JianXiong, Zhang, DeNan, Mallik, Azim, Huang, YuQing, He, ChengXin, Xu, GuangPing
Format: Article
Language:English
Subjects:
Arundo donax
Biodegradation, Environmental
biomass
Bioremediation
Coix
Coix lacryma-jobi
Flowers & plants
Growth rate
Iris wilsonii
Macrophytes
N and P removal
Nitrogen
Nutrient removal
Phosphorus
Poaceae
relative growth rate
Species
Waste Water
Wastewater
Wastewater treatment
Water pollution
Water treatment
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Summary:Wastewater from different sources shows great differences in concentrations and ratios of N and P. In order to choose suitable plant species to remove excess N and/or P from polluted waters, it is important to know the performances of these plants under different N and P concentrations. In this study, we investigated the growth and N and P removal rate of three macrophytes, Coix lacryma-jobi, Iris wilsonii, and Arundo donax under six N and P combination treatments. C. lacryma-jobi preferred higher N and P concentrations (16 mg N L −1 and 3.2 mg P L −1 ), and increasing N supply could increase its P removal rate. I. wilsonii exhibited a growth preference at a combination of moderate N and P concentrations (8 mg N L −1 and 0.8 mg P L −1 ). A. donax could grow well at all combinations of N and P and had significantly higher relative growth rate and N and P removal rates than the other two species. These results showed A. donax is a promising species to treat various polluted waters and the other two species can be used specifically to treat certain types of wastewater.
ISSN:1522-6514
1549-7879
DOI:10.1080/15226514.2016.1278424