Removal of polycyclic aromatic hydrocarbons from manufactured gas plant-contaminated soils using sunflower oil: Laboratory column experiments

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	Removal of polycyclic aromatic hydrocarbons from manufactured gas plant-contaminated soils using sunflower oil: Laboratory column experiments
	Gong, ZQ ; Wilke, BM ; Alef, K ; Li, PJ ; Zhou, QX
刊名	CHEMOSPHERE
	2006
卷号	62 期号:5 页码:780-787
关键词	polycyclic aromatic hydrocarbons (PAHs) vegetable oil column solubilization respiration soil remediation
ISSN号	0045-6535
通讯作者	Wilke, BM, Tech Univ Berlin, Inst Ecol, Franklinstr 29, D-10587 Berlin, Germany
中文摘要	Laboratory column experiments were performed to remove PAHs (polycyclic aromatic hydrocarbons) from two contaminated soils using sunflower oil. Two liters of sunflower oil was added to the top of the columns (33 cm x 21 cm) packed with 1 kg of PAH-contaminated soil. The sunflower oil was applied sequentially in two different ways, i.e. five additions of 400 ml or two additions of 11. The influence of PAH concentration and the volume of sunflower oil on PAH removal were examined. A soil respiration experiment was carried out and organic carbon contents of the soils were measured to deter-mine degradability of remaining sunflower oil in the soils. Results showed that the sunflower oil was effective in removing PAHs from the two soils, more PAHs were removed by adding sunflower oil in two steps than in five steps, probably because of the slower flow rate in the former method. More than 90% of total PAHs was removed from a heavily contaminated soil (with a total 13 PAH concentration of 4721 mg kg(-1)) using 4 1 of sunflower oil. A similar removal efficiency was obtained for another contaminated soil (with a total 13 PAH concentration of 724 mg kg(-1)), while only 2 1 was needed to give a similar efficiency. Approximately 4-5% of the sunflower oil remained in the soils. Soil respiration curves showed that remaining sunflower oil was degraded by allowing air exchange and supplying with nutrients. Organic carbon content of the soil was restored to original level after 180 d incubation. These results indicated that the sunflower oil had a great capacity to remove PAHs from contaminated soils, and sunflower oil solubilization can be an alternative technique for remediation of PAH contaminated soils. (c) 2005 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:000235436700012
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55009]
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	Gong, ZQ,Wilke, BM,Alef, K,et al. Removal of polycyclic aromatic hydrocarbons from manufactured gas plant-contaminated soils using sunflower oil: Laboratory column experiments[J]. CHEMOSPHERE,2006,62(5):780-787.
APA	Gong, ZQ,Wilke, BM,Alef, K,Li, PJ,&Zhou, QX.(2006).Removal of polycyclic aromatic hydrocarbons from manufactured gas plant-contaminated soils using sunflower oil: Laboratory column experiments.CHEMOSPHERE,62(5),780-787.
MLA	Gong, ZQ,et al."Removal of polycyclic aromatic hydrocarbons from manufactured gas plant-contaminated soils using sunflower oil: Laboratory column experiments".CHEMOSPHERE 62.5(2006):780-787.