Phosphorus removal from domestic wastewater by Echinodorus cordifolius L.
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Publication Details
Author list: Torit J., Siangdung W., Thiravetyan P.
Publisher: Taylor and Francis Group
Publication year: 2012
Journal: Journal of Environmental Science and Health, Part A: Toxic/Hazardous Substances and Environmental Engineering (1093-4529)
Volume number: 47
Issue number: 5
Start page: 794
End page: 800
Number of pages: 7
ISSN: 1093-4529
eISSN: 1532-4117
Languages: English-Great Britain (EN-GB)
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Abstract
This study was to use the plants to remove phosphorus from domestic wastewater which contained high phosphorus concentration. Six higher plant species such as Crinum asiaticum L., Echinodorus cordifolius L., Spathiphyllum clevelandii Schott, Rhizophora apiculata Blume, Thalia dealbata J.fraser., Heliconia psittacorum L.f. were screened for phosphorus removal. Plants were grown in the domestic wastewater and the remaining phosphorus-phosphate concentration in the systems was determined. The results indicated that among studied plants, Echinodorus cordifolius L. was the best for phosphorus removal. Using this plant will improve the quality of domestic wastewater which contained excess phosphorus concentration and induced eutrophication. The relationship between the plants, microorganisms, and soil in the system were also investigated. In this system, adsorption by soil was the major role for phosphorus removal (71%), followed by E. cordifolius (16%), microorganisms in domestic wastewater (7%), and microorganisms in soil (6%). These results indicated the ability of E. cordifolius to remove phosphorus which was superior to that of the microorganisms in the system. Moreover, the rapid phosphorus removal was concomitant to the growth, photosynthesis activity and biomass of E. cordifolius grown in domestic wastewater. The C:N:P ratio of E. cordifolius tissue in the system indicated that elements were taken up from the wastewater. From these results, the suitability of E. cordifolius for domestic wastewater treatment was confirmed. ฉ 2012 Copyright Taylor and Francis Group, LLC.
Keywords
domestic wastewater, Echinodorus cordifolius L, Phosphorus removal, phytoremediation
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