Effect of iron transformation on Acidithiobacillus ferrooxidans bio-leaching of clay vanadium residue

Abstract

The acid bio-leaching process of vanadium extraction from clay vanadium water-leached residue was studied and the effect of the performance of iron transformation was investigated. Acidithiobacillus ferrooxidans affects the dissolution of vanadium through the catalytic effect on Fe³⁺/Fe²⁺ couple and material exchange. The passivation of iron settling correlates with ferrous ion content in bio-leaching solution. In medium containing A. ferrooxidans and Fe(III), the increment in Fe(II) concentration leads to the formation of jarosite, generating a decline in vanadium extraction efficiency. Analysis of cyclic voltammetry shows that Fe(II) ion is apt to be oxidized and translated into precipitate by A. ferrooxidans, which strongly adsorbed to the surface of the residue. Fe(III) ion promotes the vanadium extraction due to its oxidizing activity. Admixing A. ferrooxidans to Fe(III) medium elevates the reduction of low valence state vanadium and facilitates the exchange of substance between minerals and solution. This motivates 3.8% and 21.8% increments in recovery ratio and leaching rate of vanadium compared to the Fe(III) exclusive use, respectively. Moreover, Fe(II) ion impacts vanadium extraction slightly in sterile medium but negatively influences vanadium leaching in the presence of bacteria.

Keywords

iron ion cycle / Acidithiobacillus ferrooxidans / passivation / cyclic valtammetry / clay vanadium

References

[1] YangQ W, XieZ M, PengH, LiuZ H, TaoC Y. Leaching of vanadium and chromium from converter vanadium slag intensified with surface wettability [J]. Journal of Central South University, 2018, 25: 1217-1325

[2] LiuC, ZhangY M, BaoS X. Vanadium recovery from stone coal through roasting and flotation [J]. Transactions of Nonferrous Metals Society of China, 2017, 27: 197-203

[3] JuZ J, WangC Y, YinF, YangY Q, LiD F. Process of vanadium extraction from stone coal vanadium ore by activated sulfuric acid leaching at atmospheric pressure [J]. Chinese Journal of Nonferrous Metals, 2012, 22: 2061-2068(in Chinese)

[4] ZhangX Y, QinW Q, TianX D, ChenY B, GuY, XiX G. Microwave roasting-acidic leaching technique for extraction of vanadium from stone coal [J]. Chinese Journal of Nonferrous Metals, 2011, 21: 908-912(in Chinese)

[5] WuA X, HuK J, WangH J, ZhangA Q, YangY. Effect of ultraviolet mutagenesis on heterotrophic strain mutation and bioleaching of low grade copper ore [J]. Journal of Central South University, 2017, 24: 2245-2252

[6] GovenderE, BryanC G, HarrisonS T L. Effect of physico-chemical and operating conditions on the growth and activity of Acidithiobacillus ferrooxidans in a simulated heap bio-leaching environment [J]. Minerals Engineering, 2015, 75: 14-25

[7] HaoX D, LiuX D, YangQ, LiuH W, YinH Q, QiuG Z, LiangY L. Comparative study on bioleaching of two different types of low-grade copper tailings by mixed moderate thermophiles [J]. Transactions of Nonferrous Metals Society of China, 2018, 28: 1847-1853

[8] ChneB W, WuB, LiuX Y, WenJ K. Effect of CO₂, and N₂, on microbial community changes during column bioleaching of low-grade high pyrite-bearing chalcocite ore [J]. Journal of Central South University, 2015, 22: 4528-4535

[9] YuR L, ShiL J, ZhouD, QiuG Z, ZengW M. Research development of microorganism synergy mechanisms during bio-leaching [J]. Chinese Journal of Nonferrous Metals, 2013, 23: 3006-3014(in Chinese)

[10] HuangJ, ZhangY M, HuangJ, LiuT, CaiZ L, XueN N. Selective leaching of vanadium from roasted stone coal by dilute sulfuric acid dephosphorization-two-stage pressure acid leaching [J]. Minerals, 2016, 6: 75-87

[11] LiaoM X, ZhangX Y, ZhangM X, DengR, ZengZ N. Study on the bio-leaching conditions of vanadium from vanadium-bearing stone coal by Acidthiobacillus ferrooxidans [J]. Fine Chemicals, 2015, 32: 144-148(in Chinese)

[12] MishraD, KimD J, RalphD E, AhnJ G, RheeY H. Bio-leaching of vanadium rich spent refinery catalysts using sulfur oxidizing lithotrophs [J]. Hydrometallurgy, 2007, 88: 202-209

[13] LuoX B, FengY L, LiH R, DuZ W, WangH J, LiuW. Investigation on extraction of V2O5 from clay containing vanadium by acid process [J]. Mining and Metallugical Engineering, 2007, 27: 48-53(in Chinese)

[14] ZhuX BProcess and transfer behavior of extracting vanadium existed in muscovite from stone coal by activating roasting [D], 2013, Wuhan, WuHan University of Technology(in Chinese)

[15] LiuX W, FengY L, LiH R, YangZ C, CaiZ L. Effect of Acidithiobacillus ferrooxidans on pyrite oxidation by ferric iron under aerobic and anaerobic conditions [J]. Chinese Journal of Nonferrous Metals, 2013, 23: 274-281(in Chinese)

[16] SchippersA, JozsaP, SandW. Sulfur chemistry in bacterial leaching of pyrite [J]. Applied & Environmental Microbiology, 1996, 62: 3424-3431

[17] SandW, GehrkeT, JozsaP G, SchippersA. (Bio) chemistry of bacterial leaching-direct vs. indirect bio-leaching [J]. Hydrometallurgy, 2001, 59: 159-175

[18] BrombacherC, BachofenR, BrandlH. Biohydrometallurgical processing of solids: A patent review [J]. Applied Microbiology & Biotechnology, 1997, 48: 577-587

[19] ChenJ, GaoG Z, WangY. Microbial Hydrometallurgy [J]. Guangdong Chemical Industry, 2013, 40: 98-99(in Chinese)

[20] DaoudJ, KaramanevD. Formation of jarosite during Fe²⁺ oxidation by Acidithiobacillus ferrooxidans [J]. Minerals Engineering, 2006, 19: 960-967

[21] ParamguruR K, MishraK G, KanungoS B. Electrochemical phenomena in MnO-FeSLeaching in dilute HCl. Part 2: Studies on polarization measurements [J]. Canadian Metallurgical Quarterly, 1998, 37: 395-403

[22] TributschH. Direct versus indirect bio-leaching [J]. Hydrometallurgy, 1999, 9: 51-60

[23] DempersC J N, BreedA W, HansfordG S. The kinetics of ferrous-iron oxidation by Acidithiobacillus ferrooxidans and Leptospirillum ferrooxidans: Effect of cell maintenance [J]. Biochemical Engineering Journal, 2003, 16: 337-346

[24] NazariB, JorjaniE, HaniH, ManafiZ, RiahiA. Formation of jarosite and its effect on important ions for Acidithiobacillus ferrooxidans bacteria [J]. Transactions of Nonferrous Metals Society of China, 2014, 24: 1152-1160

[25] BascianoL CCrystal chemistry of the jarosite group of minerals-solid solution and atomic structures [D], 2008, Kingston, Ontario, Queen’s Unveristy