Hossein Karimi Darvanjooghi Mohammad, Kaur Kamalpreet, Magdouli Sara, Kaur Brar Satinder
Department of Civil Engineering, Lassonde School of Engineering, York University, Toronto, Ontario M3J 1P3, Canada.
Research Centre of Energy, Mining, and Environment (EME), National Research Council Canada, 6100 Royalmount Ave, Montreal, QC H4P 2R2, Canada.
Bioresour Technol. 2023 Feb;369:128476. doi: 10.1016/j.biortech.2022.128476. Epub 2022 Dec 9.
The adhesion of microorganisms to surfaces and the affecting factors is important in biomining pretreatment. In this research, the novelty is focused on studying the monosaccharide's impact on the adaptability and adhesivity of Ferroplasma acidiphilum for oxidization of sulfide-bearing ore containing pyrite harboring 98 % of gold in its crystal lattice. d-sucrose increased EPS production with the highest amount of pyrite dissolution (69 %) as compared to the other types of monosaccharides (d-galactose and d-fructose). Addition of 0.8 wt% d-sucrose enhanced the production of ferric ions 65 % for the ore load of 20 wt% while for the addition of 0.4 wt%, the ferric ions concentration was maximum up to 95 %. The results indicated that the addition of both yeast extract and d-sucrose with the concentration of 0.4 wt% enhanced the EPS (Extracellular Polymeric Substances) biovolume fraction from 7.5 to 32.5 v/v %.
