학술논문
Growth and nutrient removal of three macrophytes in response to concentrations and ratios of N and P.
Document Type
Article
Source
Subject
*MACROPHYTES
*PLANT growth
*SEWAGE
*BIOMASS
*PLANT-water relationships
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Language
ISSN
1522-6514
Abstract
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, andArundo donaxunder six N and P combination treatments.C. lacryma-jobipreferred higher N and P concentrations (16 mg N L−1and 3.2 mg P L−1), and increasing N supply could increase its P removal rate.I. wilsoniiexhibited a growth preference at a combination of moderate N and P concentrations (8 mg N L−1and 0.8 mg P L−1).A. donaxcould 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 showedA. donaxis a promising species to treat various polluted waters and the other two species can be used specifically to treat certain types of wastewater. [ABSTRACT FROM PUBLISHER]