ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The present work deals with a bioremediation study of a heavy-metal polluted harboursediment, obtained from the Italian Adriatic Coast. Bioleaching of the sediment sample wasperformed with a mixed culture of acidophilic, chemi-autotrophic Fe/S oxidising bacteria. Theeffect of an anaerobic biostimulation pre-treatment on the extent of Cd, Cu, Zn, Ni, Pb, Hg, As, Crextraction by bioleaching was evaluated. The biostimulation pre-treatment was intended tostimulate autochthonous sulfate reducing strains, to enhance the sulfide fraction in the sediment, tofavour subsequent activity of reduced-sulfur-oxidizing bacteria in the subsequent bioaugmentation(bioleaching). The effect of the duration of anaerobic pre-treatment (21 and 30 days) in the presenceand absence of 1% glucose was tested. The results obtained showed that the activity of the reducedsulfur-oxidising strains was significantly enhanced after an anaerobic pre-treatment of thesediments and showed real promise for the application of bioleaching for metal polluted sediments
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.20-21.307.pdf
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