期刊
JOURNAL OF ENVIRONMENTAL ENGINEERING AND LANDSCAPE MANAGEMENT
卷 21, 期 3, 页码 153-162出版社
VILNIUS GEDIMINAS TECH UNIV
DOI: 10.3846/16486897.2012.721784
关键词
TNT; bioaugmentation; biostimulation; phytoremediation; microbial community
资金
- Ministry of Defence of the Republic of Latvia [AIVA 2008/220]
- ESF DoRa Programme Activity 5
- Ministry of Education and Science of Estonia [SF0180127s08, SF0180026s08]
Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment.
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