TY - JOUR
T1 - Feasibility Study of Metal Bioleaching in a Gold-Rich Ore Sample by Acidithiobacillus thiooxidans DSM 26636
AU - Loa, José Daniel Aguilar
AU - Rivas-Castillo, Andrea Margarita
AU - García-Tejeda, Luis Angel
AU - Gómez-Ramírez, Marlenne
AU - Rojas-Avelizapa, Luz Irene
AU - Rojas-Avelizapa, Norma Gabriela
N1 - Publisher Copyright:
© 2021, The Indian Institute of Metals - IIM.
PY - 2021/8
Y1 - 2021/8
N2 - Acidithiobacillus thiooxidans has been used in bioleaching processes, being recognized for its high metal leaching ability from industrial wastes. In the present work, the sulfur-oxidizing activity of A. thiooxidans DSM 26636, adapted to increasing concentrations of ore was assessed, finding that at 28 days with 3% (w/v) of ore sample, the culture produces high amounts of the sulfate ion (SO4−2) and sulfuric acid (H2SO4) and causes a decrease in the pH value, compared to the negative control. Also, there was observed a net removal of As, Zn, Fe, Al, Cu, and Au in concentrations of 48.23 ± 3.11, 264.02 ± 26.27, 9055.81 ± 210.39, 605.29 ± 30.26, 2158 ± 359.04, and 0.99 ± 0.37 mg/kg, respectively. Thus, the present work shows the potential of A. thiooxidans DSM 26636 to be used for the extraction of metals contained in ores, especially for those containing Cu, Zn, As, Fe, and Al.
AB - Acidithiobacillus thiooxidans has been used in bioleaching processes, being recognized for its high metal leaching ability from industrial wastes. In the present work, the sulfur-oxidizing activity of A. thiooxidans DSM 26636, adapted to increasing concentrations of ore was assessed, finding that at 28 days with 3% (w/v) of ore sample, the culture produces high amounts of the sulfate ion (SO4−2) and sulfuric acid (H2SO4) and causes a decrease in the pH value, compared to the negative control. Also, there was observed a net removal of As, Zn, Fe, Al, Cu, and Au in concentrations of 48.23 ± 3.11, 264.02 ± 26.27, 9055.81 ± 210.39, 605.29 ± 30.26, 2158 ± 359.04, and 0.99 ± 0.37 mg/kg, respectively. Thus, the present work shows the potential of A. thiooxidans DSM 26636 to be used for the extraction of metals contained in ores, especially for those containing Cu, Zn, As, Fe, and Al.
KW - Acidithiobacillus thiooxidans
KW - Bioleaching
KW - Gold ore
KW - Sulfur oxidation
UR - http://www.scopus.com/inward/record.url?scp=85106435599&partnerID=8YFLogxK
U2 - 10.1007/s12666-021-02291-w
DO - 10.1007/s12666-021-02291-w
M3 - Artículo
AN - SCOPUS:85106435599
SN - 0972-2815
VL - 74
SP - 1865
EP - 1872
JO - Transactions of the Indian Institute of Metals
JF - Transactions of the Indian Institute of Metals
IS - 8
ER -