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Ecological Remediation of Hydrocarbon Contaminated Soils with Weed Plant..pdf

Ecological Remediation of Hydrocarbon Contaminated Soils with Weed Plant..pdf

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Ecological Remediation of Hydrocarbon Contaminated Soils with Weed Plant.

J. Resour. Ecol. 2011 2(2) 97-105 DOI:10.3969/j.issn.1674-764x.2011.02.001 June, 2011 Journal of Resources and Ecology Received: 2010-11-05 Accepted: 2011-01-24 Foundation: National Natural Science Foundation of China . * Corresponding author:ZHOU Qixing. Email: zhouqx@. Vol.2 No.2 Article 1 Introduction Petroleum hydrocarbons (PHCs) usually consist of alkanes (linear or branched), cycloalkanes, aromatic hydrocarbons or more complex chemicals like asphaltenes (Zhou et al. 2004; Pernar et al. 2006). As a major pillar of energy sources in the world, availability of petroleum is a critical concern for many nations. By the end of 2007, the output of global petroleum had reached 2.7 billion barrels (1970–2007). During the processes of exploration, refining, transporting and marketing petroleum products, an increasing number of sites have been polluted by PHCs. The Deepwater Horizon oil spill in April 2010, the largest marine oil spill in the history of the petroleum industry, particularly caused extensive damage to marine and wildlife habitats in China, where oil fields are widely exploited, PHC contamination has become a critical environmental issue (Wang et al. 2010; Zhu et al. 2010). The accumulation of PHCs is now seriously affecting the safety of ecosystems and human health (Harvey et al. 2002; Liste et al. 2006; Meagher 2000). Thus, the remediation of PHC contaminated soils has attracted world wide attention (Chaudhry et al. 2005; Euliss et al. 2008; Vaajasaari and Joutti 2006). In comparison with conventional ex situ methods, such as incineration, off-site storage, soil washing and in situ capping for stabilization, in situ phytoremediation as a polishing green technology that uses higher plants to degrade, transform, assimilate, metabolize, or detoxify hazardous pollutants from environments has a lot of advantages (Chaudhry et al. 2005; Schr?der 2003; Susarla et al. 2002; Trapp and Karlson 2001; Zhou et al. 2004

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