Title |
The use of ozone in the remediation of polycyclic aromatic hydrocarbon contaminated soil
|
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Published in |
Chemosphere, September 2005
|
DOI | 10.1016/j.chemosphere.2005.07.018 |
Pubmed ID | |
Authors |
Mark M. O’Mahony, Alan D.W. Dobson, Jeremy D. Barnes, Ian Singleton |
Abstract |
The potential of using ozone for the removal of phenanthrene from several different soils, both alone and in combination with biodegradation using a microbial inoculant (Pseudomonas alcaligenes PA-10), was examined. The greater the water content of the soil the less effective the ozone treatment, with air-dried soils showing the greatest removal of phenanthrene; while soils with higher levels of clay also reduced the effectiveness of the ozone treatments. However, at least a 50% reduction in phenanthrene levels was achieved in air-dried soil after an ozone treatment of 6 h at 20 ppm, with up to 85% removal of phenanthrene achieved in sandy soils. The biodegradation results indicate that P. alcaligenes PA-10 may be useful as an inoculant for the removal of PAHs from contaminated soils. Under the conditions used in our experiments, however, pre-ozonation did not enhance subsequent biodegradation of phenanthrene in the soils. Similar levels of phenanthrene removal occurred in both non-ozonated and ozonated Cruden Bay soil inoculated with P. alcaligenes PA-10. However, the biodegradation of phenanthrene in ozonated Boyndie soil was much slower. This may be due to the release of toxic products in this soil during ozonation. |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 1 | <1% |
China | 1 | <1% |
Unknown | 121 | 98% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 25 | 20% |
Student > Master | 18 | 15% |
Researcher | 16 | 13% |
Student > Bachelor | 11 | 9% |
Student > Doctoral Student | 8 | 7% |
Other | 12 | 10% |
Unknown | 33 | 27% |
Readers by discipline | Count | As % |
---|---|---|
Environmental Science | 32 | 26% |
Agricultural and Biological Sciences | 17 | 14% |
Engineering | 8 | 7% |
Chemistry | 7 | 6% |
Biochemistry, Genetics and Molecular Biology | 6 | 5% |
Other | 13 | 11% |
Unknown | 40 | 33% |