Palmroth Marja R T, Pichtel John, Puhakka Jaakko A
Institute of Environmental Engineering and Biotechnology, Tampere University of Technology, Finland.
Bioresour Technol. 2002 Sep;84(3):221-8. doi: 10.1016/s0960-8524(02)00055-x.
The effects of several plant species, native to northern latitudes, and different soil amendments, on diesel fuel removal from soil were studied. Plant treatments included Scots Pine (Pinus sylvestris), Poplar (Populus deltoides x Wettsteinii), a grass mixture (Red fescue, Fesuca rubra; Smooth meadowgrass, Poa pratensis and Perennial ryegrass, Lolium perenne) and a legume mixture (White clover, Trifolium repens and Pea, Pisum sativum). Soil amendments included NPK fertiliser, a compost extract and a microbial enrichment culture. Diesel fuel disappeared more rapidly in the legume treatment than in other plant treatments. The presence of poplar and pine enhanced removal of diesel fuel, but removal under grass was similar to that with no vegetation. Soil amendments did not enhance diesel fuel removal significantly. Grass roots accumulated diesel-range compounds. This study showed that utilisation of selected plants accelerates removal of diesel fuel in soil and may serve as a viable, low-cost remedial technology for diesel-contaminated soils in subarctic regions.
研究了几种原产于北纬地区的植物物种以及不同土壤改良剂对土壤中柴油去除效果的影响。植物处理包括苏格兰松（Pinus sylvestris）、杨树（Populus deltoides x Wettsteinii）、一种草混合物（紫羊茅，Festuca rubra；草地早熟禾，Poa pratensis和多年生黑麦草，Lolium perenne）以及一种豆科植物混合物（白三叶草，Trifolium repens和豌豆，Pisum sativum）。土壤改良剂包括氮磷钾肥料、堆肥提取物和微生物富集培养物。柴油燃料在豆科植物处理中比在其他植物处理中消失得更快。杨树和松树的存在促进了柴油燃料的去除，但在草下的去除情况与无植被时相似。土壤改良剂并未显著提高柴油燃料的去除率。草根积累了柴油范围内的化合物。这项研究表明，利用选定的植物可加速土壤中柴油燃料的去除，并可作为亚北极地区柴油污染土壤可行的低成本修复技术。
