Please use this identifier to cite or link to this item:
Title: Probing the whole ore chalcopyrite–bacteria interactions and jarosite biosynthesis by Raman and FTIR microspectroscopies
Authors: Adamou, Anastasia 
Manos, Giorgos 
Messios, Nicholas 
Georgiou, Lazaros 
Xydas, Constantinos 
Varotsis, Constantinos 
Keywords: Bioleaching;Chalcopyrite;Extracellular polymeric substances (EPS);FTIR;K(+)- and NH(4)(+)-jarosites;Raman
Category: Earth and Related Environmental Sciences
Field: Natural Sciences
Issue Date: 15-Feb-2016
Publisher: Elsevier Ltd
Source: Bioresource Technology, 15 February 2016, Volume 214,Pages 852-855
Abstract: The whole ore chalcopyrite–bacteria interaction and the formation of the extracellular polymeric substances (EPS) during the bioleaching process by microorganisms found in the mine of Hellenic Copper Mines in Cyprus were investigated. Raman and FTIR microspectroscopies have been applied towards establishing a direct method for monitoring the formation of secondary minerals and the newly found vibrational marker bands were used to monitor the time evolution of the formation of covellite, and the K+ and NH4+-jarosites from the chalcopyrite surfaces. The Raman data indicate that the formation of K+-jarosite is followed by the formation of NH4+-jarosite. The variation in color in the FTIR imaging data and the observation of the amide I vibration at 1637 cm−1 indicate that the microorganisms are attached on the mineral surface and the changes in the frequency/intensity of the biofilm marker bands in the 900–1140 cm−1 frequency range with time demonstrate the existence of biofilm conformations.
ISSN: 09608524
DOI: 10.1016/j.biortech.2016.04.001
Rights: © 2016
Type: Article
Appears in Collections:Άρθρα/Articles

Show full item record


checked on Sep 16, 2019

Page view(s)

Last Week
Last month
checked on Sep 22, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.