Title page for etd-0104112-144756


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URN etd-0104112-144756
Author Jia-Ren Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5358 times. Download 1799 times.
Department Marine Environment and Engineering
Year 2011
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The Study of Phytoremediation of Diesel Contaminated Soils by Energy Crops
Date of Defense 2011-12-29
Page Count 113
Keyword
  • Total Petroleum Hydrocarbons
  • Diesel Fuel
  • Biofuel Crops
  • Phytoremediation
  • Abstract The objectives of this study are to use phytoremediation ecotechnology to improve the long-term soil pollution contaminated by petroleum and its refined products, and to explore the influence of environmental factors to the effective degradation of TPH.This study is divided into three stages.First, we selected the biofuel crops seeds to test their diesel fuel pollution tolerance.The crops include soybean、sunflower、canola and corn.This four Taiwanese common energy crops were selected to manually configure three levels of diesel fuel pollution(1000、5000、10000 mg kg-1)in soil test the seed tolerance experiments.The experimental results in the first stage exhibited that the best energy crop species and non-edible crop(Jatropha),are selected in second phase for contaiminated soil degradation experiment to explore the possible influence of enviromented factors,such as soil moisture、pH、total plate…etc,and to explore the applied fertilizer to increase soil nutrients,whether it will affect the degradation of diesel pollution.Finally, in the third phase, the energy crops were used in the oil-contaminated site to assess their decontamination efficiency. From June 2011 to November 2011, the experimental results shown in the first phase of seed tolerance test, for a period of 30 days showed that the soybean diesel-contaminated soil presented the best tolerance.Although the germination rate was increased with the concentration from 80% to 27%, it showed the best growth conditions.Therefore, in the second phase of test run, the speices of soybean and jatropha were selected prepared with concentrations of 1745、6271 and 10072 mg kg-1 dry soil. After 90 day for phytoremediation, soybean group(S) were found that the residual concentrations in soil were measured equal to 524、809 and 1913 mg kg-1 dry soil,with the removal rates of 69.97%、87.09% and 81.01% respectively.The concentration level of 10000 ppm was found not reach our control standard of 1000 ppm. The soil planted by jatropha(J) showed that residual concentration in soils equial to 303、1864 and 4837 mg kg-1 dry soil, with removal rates equal to 82.61%、70.27% and 51.98% respectively.Through statistical regression analytical results, the soybean can handle up to a concentration of 5300 mg/kg for diesel, while jatropha can handle up to 2170 mg/kg in this system. Except for the concentration level of 1000 ppm can reach our control standards, the other two groups were found below the control standard. To improve the removal efficieneies, it was suggested that phyto remediation time can be extended.
    Advisory Committee
  • Jimmy C.M. Kao - chair
  • Mu-Sheng Lee - co-chair
  • Lei Yang - advisor
  • Files
  • etd-0104112-144756.pdf
  • Indicate in-campus at 1 year and off-campus access at 1 year.
    Date of Submission 2012-01-04

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