naa a22 4500 510752365 CHVBK 20180411083109.0 cr unu---uuuuu 180411e20130201xx s 000 0 eng 10.1007/s11270-012-1386-z doi (NATIONALLICENCE)springer-10.1007/s11270-012-1386-z Impact of Chemical Oxidants on the Heavy Metals and the Microbial Population in Sediments [Elektronische Daten] [Eylem Doğan, Frederik Accoe, Nico Boon, Leen Bastiaens, Winnie Dejonghe] In this study, chemical oxidation was applied to treat three contaminated sediments. All the sediments were contaminated with mineral oil, polycyclic aromatic hydrocarbons and heavy metals and had an organic matter content ranging from 2.4 to 7.6%. The natural oxidant demand of the sediments was determined during treatment with two different types of oxidants (potassium permanganate and sodium persulfate), and the effect of these oxidants on the heavy metal release and on the microbial community was investigated. The natural oxidant demands of the sediments under persulfate treatment were lower (30-100g kg−1) than the ones treated with permanganate (50-450g kg−1). Cr was released during the application of permanganate whereas Zn and Pb were released under persulfate treatment. qPCR results showed that permanganate and persulfate, both at a concentration of 150g kg−1, caused a decrease (2 log units) in the number of 16S rRNA gene of total bacteria in the sediment having the lowest organic matter content. However, the total ATP, considered as a biomarker for microbial activity, was below detection limit in all sediments in the presence of at least 150g kg−1 oxidant. Only permanganate induced a shift in the structure of the microbial community. Springer Science+Business Media Dordrecht, 2012 Chemical oxidation nationallicence Heavy metals nationallicence Microbial diversity nationallicence qPCR nationallicence ATP nationallicence DGGE nationallicence Doğan Eylem Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut Accoe Frederik Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut Boon Nico Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, 9000, Gent, Belgium aut Bastiaens Leen Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut Dejonghe Winnie Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-12 0049-6979 224:2<1 2013 224 11270 https://doi.org/10.1007/s11270-012-1386-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-012-1386-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Doğan Eylem Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut NATIONALLICENCE 700 1- Accoe Frederik Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut NATIONALLICENCE 700 1- Boon Nico Laboratory of Microbial Ecology and Technology (LabMET), Ghent University, Coupure Links 653, 9000, Gent, Belgium aut NATIONALLICENCE 700 1- Bastiaens Leen Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut NATIONALLICENCE 700 1- Dejonghe Winnie Flemish Institute for Technological Research (VITO), Separation and Conversion Technology, Boeretang 200, 2400, Mol, Belgium aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/2(2013-02-01), 1-12 0049-6979 224:2<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer