التفاصيل البيبلوغرافية
| العنوان: |
Life cycle assessment of polychlorinated biphenyl contaminated soil remediation processes. |
| المؤلفون: |
Busset, Guillaume, Sangely, Matthieu, Montrejaud-Vignoles, Mireille, Thannberger, Laurent, Sablayrolles, Caroline |
| المصدر: |
International Journal of Life Cycle Assessment; Mar2012, Vol. 17 Issue 3, p325-336, 12p |
| مصطلحات موضوعية: |
SOIL remediation, POLYCHLORINATED biphenyls, LIFE cycle costing, BIPHENYL compounds, SOIL protection, ORGANOCHLORINE compounds |
| مستخلص: |
Purpose: A life-cycle assessment (LCA) was performed to evaluate the environmental impacts of the remediation of industrial soils contaminated by polychlorobiphenyl (PCB). Two new bioremediation treatment options were compared with the usual incineration process. In this attributional LCA, only secondary impacts were considered. The contaminated soil used for the experiments contained 200 mg of PCB per kilogram. Methods: Three off-site treatment scenarios were studied: 1) bioremediation with mechanical aeration, 2) bioremediation with electric aeration and 3) incineration with natural gas. Bioremediation processes were designed from lab-scale, scale-up and pilot experiments. The incineration technique was inspired by a French plant. A semi-quantitative uncertainty analysis was performed on the data. Environmental impacts were evaluated with the CML 2001 method using the SimaPro software. Results and discussion: In most compared categories, the bioremediation processes are favorable. Of the bioremediation options, the lowest environmental footprint was observed for electric aeration. The uncertainty analysis supported the results that compared incineration and bioremediation but decreased the difference between the options of aeration. The distance of transportation was one of the most sensitive parameters, especially for bioremediation. At equal distances between the polluted sites and the treatment plant, bioremediation had fewer impacts than incineration in eight out of 13 categories. Conclusions: The use of natural gas for the incineration process generated the most impacts. Irrespective of the aeration option, bioremediation was better than incineration. The time of treatment should be taken into account. More precise and detailed data are required for the incineration scenario. More parameters of biological treatments should be measured. LCA results should be completed using ecological and health risk assessment and an acceptability evaluation. [ABSTRACT FROM AUTHOR] |
|
Copyright of International Journal of Life Cycle Assessment is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
