LiuWuChangEtAl2012

Référence

Liu, D., Wu, X., Chang, J., Gu, B., Min, Y., Ge, Y., Shi, Y., Xue, H., Peng, C., Wu, J. (2012) Constructed wetlands as biofuel production systems. Nature Climate Change, 2(3):190-194. (Scopus )

Résumé

Clean biofuel production is an effective way to mitigate global climate change and energy crisis. Progress has been made in reducing greenhouse-gas (GHG) emissions and nitrogen fertilizer consumption through biofuel production. Here we advocate an alternative approach that efficiently produces cellulosic biofuel and greatly reduces GHG emissions using waste nitrogen through wastewater treatment with constructed wetlands in China. Our combined experimental and literature data demonstrate that the net life-cycle energy output of constructed wetlands is higher than that of corn, soybean, switchgrass, low-input high-diversity grassland and algae systems. Energy output from existing constructed wetlands is ~237% of the input for biofuel production and can be enhanced through optimizing the nitrogen supply, hydrologic flow patterns and plant species selection. Assuming that all waste nitrogen in China could be used by constructed wetlands, biofuel production can account for 6.7% of national gasoline consumption. We also find that constructed wetlands have a greater GHG reduction than the existing biofuel production systems in a full life-cycle analysis. This alternative approach is worth pursuing because of its great potential for straightforward operation, its economic competitiveness and many ecological benefits. © 2012 Macmillan Publishers Limited. All rights reserved.

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@ARTICLE { LiuWuChangEtAl2012,
    AUTHOR = { Liu, D. and Wu, X. and Chang, J. and Gu, B. and Min, Y. and Ge, Y. and Shi, Y. and Xue, H. and Peng, C. and Wu, J. },
    TITLE = { Constructed wetlands as biofuel production systems },
    JOURNAL = { Nature Climate Change },
    YEAR = { 2012 },
    VOLUME = { 2 },
    PAGES = { 190-194 },
    NUMBER = { 3 },
    ABSTRACT = { Clean biofuel production is an effective way to mitigate global climate change and energy crisis. Progress has been made in reducing greenhouse-gas (GHG) emissions and nitrogen fertilizer consumption through biofuel production. Here we advocate an alternative approach that efficiently produces cellulosic biofuel and greatly reduces GHG emissions using waste nitrogen through wastewater treatment with constructed wetlands in China. Our combined experimental and literature data demonstrate that the net life-cycle energy output of constructed wetlands is higher than that of corn, soybean, switchgrass, low-input high-diversity grassland and algae systems. Energy output from existing constructed wetlands is ~237% of the input for biofuel production and can be enhanced through optimizing the nitrogen supply, hydrologic flow patterns and plant species selection. Assuming that all waste nitrogen in China could be used by constructed wetlands, biofuel production can account for 6.7% of national gasoline consumption. We also find that constructed wetlands have a greater GHG reduction than the existing biofuel production systems in a full life-cycle analysis. This alternative approach is worth pursuing because of its great potential for straightforward operation, its economic competitiveness and many ecological benefits. © 2012 Macmillan Publishers Limited. All rights reserved. },
    COMMENT = { Export Date: 16 May 2012 Source: Scopus doi: 10.1038/nclimate1370 },
    ISSN = { 1758678X (ISSN) },
    KEYWORDS = { alga, biofuel, biomass power, cellulose, cleaner production, competitiveness, constructed wetland, emission control, energy crop, fertilizer, global climate, grassland, greenhouse gas, life cycle analysis, wastewater, water flow, water treatment, China },
    OWNER = { Luc },
    TIMESTAMP = { 2012.05.16 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84857517205&partnerID=40&md5=5d76d030a8ea987f28b7f6aaf32aaf00 },
}

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