Enhancing Reductive Processes by Autochthonic Sulphate-Reducing Bacteria in Lignite Overburden Dumps
NA-processes can be enhanced for lignite overburden dumps, using dicarboxylic acid as a feasible substrate for autochthonic sulphate reducing bacteria. Sulphate reduction with simultaneous FeS/FeS2-precipitation occurs and immobilises SO4 2-, H+ and heavy metals connected with a decrease of the acidity. The used LC-OCD, HP/LC, isotopic and other chemical analyses substantiate sulphate reduction under technical enhanced conditions too.
Axel Schippers, Wolfgang Sand, Franz Glombitza and Sabine Willscher
A. Simon et al., "Enhancing Reductive Processes by Autochthonic Sulphate-Reducing Bacteria in Lignite Overburden Dumps", Advanced Materials Research, Vols. 20-21, pp. 304-306, 2007