goodwater

WP 12 addresses the development of a technology for combined source and plume treatment through a combination of chemical (in situ chemical oxidation (ISCO), zero valent iron (ZVI)) and biological degradation (natural attenuation, biostimulation and bioaugmentation). The combined effect of the two techniques is not well understood and will be studied for chlorinated C-2 hydrocarbons. The majority of the work will be performed by fellow 12 (SV: W. Dejonghe/L. Bastiaens, VITO). Different abiotic techniques will be implemented at laboratory and field scales to remove the major part of the pollution in the source zone. The research will be focussed on (i) the effect of the chemical treatment of the bioremediation of the remaining VOCl-concentrations in the source zone, as well as (ii) on the potential bioremediation of chemical breakdown products downstream of the source zone. In collaboration with fellow 7 (HMGU) CSI analyses will be performed to make a distinction between biotic and abiotic transformations (initial training August/Sept. 2009; follow-up measurements 2010/2011). The direct effect on the microbial communities will be assessed with molecular techniques in collaboration with fellow 8 (HMGU), who will also provide training in SIP. Further, collaborations are anticipated with fellow 13 (K.U.Leuven) and fellow 14 (UGent), in respect with microbial characterisations. During an internal training over a total of 1 month during 3 years, fellow 12 will learn about environmental legislation concerning soil pollution/remediation and implementation of this remediation, handling 1 or 2 files of environmental consultancy provided by OVAM and Arcadis B (W. Gevaerts, V. Dries). Also, the fellow will for one month conduct experiments on the microbial degradation potential before and after chemical oxidation at Rasenberg B.V. (H. Seffelaar).