Effect of soil depth on phytoremediation efficiency for petroleum contaminants

Jeffrey Keller; M. Katherine Banks; A. P. Schwa

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Effect of soil depth on phytoremediation efficiency for petroleum contaminants

机译：Effect of soil depth on phytoremediation efficiency for petroleum contaminants

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Biodegradation of organic contaminants in soil may be enhanced by the presence of vegetation. Evaluating the effect of soil depth on phytoremediation efficiency may provide researchers and regulators with a clearer understanding of contaminant clean-up. A column study with polycyclic aromatic hydrocarbons (PAHs) and diesel-contaminated soil was conducted over a 147-day period of switchgrass (Panicum virgatum) growth. Analysis of the contaminants and plant biomass was conducted along with microbial enumeration at three soil depths in 49-day intervals. Remediation proceeded rapidly near the surface of the soil (0-20 cm) for both vegetated and unvegetated columns, but the effect of vegetation relative to an unvegetated control only was significant in the lower soil depths. Contaminant dissipation in the 20-40 and 40-60 cm layers was not significantly different between vegetated and unvegetated soil.

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《Journal of environmental science and health, Part A. Toxic/hazardous substances & environmental engineering》 |2008年第1期|1-9|共9页
作者
Jeffrey Keller; M. Katherine Banks; A. P. Schwa;
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作者单位

Department of Civil Engineering, Kansas State University, Manhattan, Kansas, USA;

School of Civil Engineering, Purdue University, West Lafayette, Indiana, USA;

Department of Agronomy, Purdue University, West Lafayette, Indiana, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
Phytoremediation; bioremediation; plants; petroleum; soil; rhizosphere;

Effect of soil depth on phytoremediation efficiency for petroleum contaminants

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