Phytodegradation of extra heavy oil-based drill cuttings using mature reed wetland: an in situ pilot study

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	Phytodegradation of extra heavy oil-based drill cuttings using mature reed wetland: an in situ pilot study
	Ji, GD ; Yang, YS ; Zhou, Q ; Sun, T ; Ni, JR
刊名	ENVIRONMENT INTERNATIONAL
	2004
卷号	30 期号:4 页码:509-517
关键词	phytodegradation mature reed wetland drill cutting extra heavy oil phytoioxicity
ISSN号	0160-4120
通讯作者	Yang, YS, Queens Univ Belfast, Sch Civil Engn, Environm Engn Res Ctr, Belfast BT7 1NN, Antrim, North Ireland
中文摘要	Environmental contamination caused by extra heavy oil-based drill cuttings (DCs) is a major problem in the Liaohe Oilfield, northeastern China. To study the potential effectiveness of the mature reed wetland in removing extra heavy oil contained in drill cuttings, biodegradation of extra heavy oils and study of the effects on soil property and ecophysiological and quality indices of reeds were carried out in a 2-year in situ pilot experiment. In the wetland, four reed beds were used to treat drill cuttings in various loadings: 0 (control), 5, 20, and 40 ks/m(2), corresponding to 150, 600, and 1200 g/m(2) extra heavy oil hydrocarbons (HCs). The obtained results demonstrate that the mature reed wetland was effective at degrading extra heavy oils without extra fertilization. Removal efficiencies of reed bed 2 in the 0- to 80-cm soil profile increased with time, from 90.1% (first harvest season) to 95.8% (second harvest season). After 2 years. only 4.2% of the initial hydrocarbons residual was retained in the surface soil. There was no apparent adverse effects on the surface soil property during degradation of extra heavy oils and, actually, the deeper soil property and reed quality indices were improved at the end of the experiment. Phytotoxicity, resulting in reduction of reed yield, was observed in the most heavily treated beds in the first year. However. tong-term reed yield recovered robustly. During the 2-year period, reed height and leaf number were slightly inhibited. (C) 2003 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000226641900008
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55203]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Ji, GD,Yang, YS,Zhou, Q,et al. Phytodegradation of extra heavy oil-based drill cuttings using mature reed wetland: an in situ pilot study[J]. ENVIRONMENT INTERNATIONAL,2004,30(4):509-517.
APA	Ji, GD,Yang, YS,Zhou, Q,Sun, T,&Ni, JR.(2004).Phytodegradation of extra heavy oil-based drill cuttings using mature reed wetland: an in situ pilot study.ENVIRONMENT INTERNATIONAL,30(4),509-517.
MLA	Ji, GD,et al."Phytodegradation of extra heavy oil-based drill cuttings using mature reed wetland: an in situ pilot study".ENVIRONMENT INTERNATIONAL 30.4(2004):509-517.