The growth response of Alternanthera philoxeroides in a simulated post-combustion emission with ultrahigh [CO2] and acidic pollutants

Xu, Cheng-Yuan and Griffin, Kevin L. and Blazier, John C. and Craig, Elizabeth C. and Gilbert, Dominique S. and Sritrairat, Sanpisa and Anderson, O. Roger and Castaldi, Marco J. and Beaumont, Larry (2009) The growth response of Alternanthera philoxeroides in a simulated post-combustion emission with ultrahigh [CO2] and acidic pollutants. Environmental Pollution, 157 (7). pp. 2118-2125. ISSN 0269-7491

Abstract

Although post-combustion emissions from power plants are a major source of air pollution, they contain excess CO2 that could be used to fertilize commercial greenhouses and stimulate plant growth. We addressed the combined effects of ultrahigh [CO2] and acidic pollutants in flue gas on the growth of Alternanthera philoxeroides. When acidic pollutants were excluded, the biomass yield of A. philoxeroides saturated near 2000 mmol mol1 [CO2] with doubled biomass accumulation relative to the ambient control. The growth enhancement was maintained at 5000 mmol mol1 [CO2], but declined when [CO2]rose above 1%, in association with a strong photosynthetic inhibition. Although acidic components (SO2 and NO2) significantly offset the CO2 enhancement, the aboveground yield increased considerably when the concentration of pollutants was moderate (200 times dilution). Our results indicate that using excess CO2 from the power plant emissions to optimize growth in commercial green house could be viable.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author version not held.
Depositing User: Dr Chengyuan-Stephen Xu
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 31 Aug 2010 11:46
Last Modified: 02 Jul 2013 23:50
Uncontrolled Keywords: greenhouse, elevated CO2, SO2, NO2, flue gas, Alternanthera philoxeroides
Fields of Research (FOR2008): 06 Biological Sciences > 0602 Ecology > 060203 Ecological Physiology
05 Environmental Sciences > 0501 Ecological Applications > 050101 Ecological Impacts of Climate Change
Socio-Economic Objective (SEO2008): D Environment > 96 Environment > 9602 Atmosphere and Weather > 960201 Atmospheric Composition (incl. Greenhouse Gas Inventory)
Identification Number or DOI: doi: 10.1016/j.envpol.2009.02.013
URI: http://eprints.usq.edu.au/id/eprint/7689

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