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Project directory according to Nr.3.2 BNBest-BMBF98 <http://www.fz-juelich.de/ptj/datapool/page/490/Schlussbericht.rtf>

        6 Ergebnisse

6 Short presentation of project results

Directory:

6.1 Outdoor experiments

      6.1.1 Performance

      6.1.2 Bioindication of soil pollutants

      6.1.3 Leachate analysis

      6.1.4 Soil analysis

      6.1.5 Separation of initial and dendroremediation phase

      6.1.6 Pollutant retarding effect of trees

      6.1.7 Lack in soil contamination balance

      6.1.8 Evaluation of soil analysis values

      6.1.9 Alternative possibilities for investigations of phytoremediation

6.2 Dendrotoxicity and fate of pollutants

      6.2.1 Execution of the experiments

      6.2.2 Balance of nitroaromatic compounds (NAC)

      6.2.3 Tolerance of trees to nitroaromatics

      6.2.4 Simulation of dendroremediation

      6.2.5 Predictability of dendroremediation

6.3 Radiotracer investigations with [¹⁴C]-TNT

6.4 Analysis of trees from a former ammunition plant site

Aim

The main aim of the investigations was to find ways of success control for the estimation of dendroremediation potential of various trees. This sanitation potential for explosive contaminated soils, polluted with 2,4,6-trinitrotoluene (TNT) should be quantified for both, deciduous and coniferous trees.

Execution

For this reason  balances of the TNT fate of four original contaminated soils outdoor experiments were performed with lysimeter pots using willows, poplar, birch and Norway spruce. 

Dynamical dendrotoxicity and fate of nitroaromatic pollutants was quantified by additional experiments using newly developed glass fibre wick application systems (example).  These systems allowed the simultaneous measurement of growth and transpiration as dendrotoxicity parameters.

Radiotracer mass balances should elucidate the tree uptake potential for  [¹⁴C]-TNT, the compartimentation of radiolabel in mature trees and the tree transformation potential for TNT. 

The analysis of trees from former ammunition plant sites should confirm the principle TNT uptake ability under field conditions.

Overview

A graphic overview about the project's preconditions, project emphasis, used methods, main results and consequences is given in Fig 3  (Project summary).

Here,  the short version of the report only allows a verbal description of the main results. For detailed result information, see the full final report pdf-version, which is however password protected.

Password request for full final report (pdf, only in German available, 5,0 MB): berndschoenmuth@yahoo.de