Evaluation of Bioremediation Potential of Local Plants to Contaminated Soil with Nonvolatile Fraction of Crude Oil

摘要：

In order to evaluate biodegradation potentials of different plant species germination rate, shoot height and above ground biomass of thirty five plant species including 10 species of Umbelliferae, 8 species of Gramineae, 4 species of Labiateae, 3 species of Brassiceceae, 2 species of Chenopodiaceae, 2 species of Solanaceae, 2 species of Linaceae and 1 species each from Rananculaceae, Plantaginaceae, Liliaceae and Cucurbitaceae were measured in an artificial soil contaminated with crude oil. The soil used in these experiments contained 85% sand, 10% silt and 5% clay and added organic compost to a nominal contamination of 1.3% total organic matter content. Following partial sterilization of soils a mixture of 1:1 acetone: crude oil was used to prepare 25, 50, 75 and 100 g crude oil Kg-1 soil. Results obtained from these experiments showed that nineteen species showed a dose-dependent response to the contaminated soils. Nine species did not germinate and six species showed a dose-independent response. These plants include Rhaphanus sp., Satureja hortensis, Carum carvi, Ocimum minimum, Nigella sativa, Linum sp., Linum usitatissimum, Ocimum basilicum, Carum cyminum, Foeniculum vulgar, Gramineae, Hordaom sp., Triticum sp., Agropyron elongatum, Agropyron deserterum, , Secale serale, Sedristia rosmarinus, Plantago ovata, Apium graveolens and Coriandrum sativa. Dose-response curve for germination of selected species were used to calculate inhibitory concentration (IC10 –IC90) for the nineteen plant species. Results obtained from this experiment shows that the ability of these plants to germinate and withstand contaminated soil is very different among various species. Many plant species of differing groups examined in this experiment showed a close range of sensitivity (low IC50) to the contaminant while few species showed some 58 fold difference in IC50 (inhibitory concentration) to the contaminated soil.

关键词： Effective concentration Hezane eztraction Non-volatile fraction of nonvolatile fraction of crude oil Germination

作者: SHARIFI Mozafar AKBARPOUR Mariam AFKARI Farah

作者单位: Razi University Center for Environmental Studies,Dept of Biology,Faculty of Science,Baghabrisham,671 Institute of Standard and Industrial Research,Bissoton High way,Kermanshah,Iran

会议类型: 国际会议

会议名称: 2009 International Symposium on Environmental Science and Technology(2009环境科学与技术国际会议)

会议地点: 上海

会议语种:英文

页码: 1814-1818

在线出版日期: 2009-06-02（万方平台首次上网日期，不代表论文的发表时间）