Effects of mutation on a new strain Leptospirillum ferriphilum YXW and bioleaching of gold ore

Yuan, Xuewu; Xie, Xuehui; Fan, Feng-xia; Zhu, Weng-xiang; Liu, Na; Liu, Jianshe

doi:10.1016/s1003-6326(13)62793-4

Cited by 14 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…are unable to utilize sulfur as an energy source. Yuan et al studied L. ferriphilum strain YXW and reported that the strain is unable to utilize sulfur source for energy.…”

Section: Discussionmentioning

confidence: 99%

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

Sajjad

Zheng

et al. 2018

J Basic Microbiol

View full text Add to dashboard Cite

The exploration of microbial diversity in extremely acidic habitats has provided a vital base for the progression of minerals biotechnology. Three indigenous ironoxidizing acidophilic bacterial strains were isolated through serial dilution of enriched bacterial culture from Baiyin Copper Mine Stope, China. The morphological, biochemical, physiological, and phylogenetic characteristics of isolates were investigated. These isolates were motile, Gram-negative, and curved shape with pleomorphism except isolate WG101 that was a straight rod. The optimum growth pH and temperature for all isolates were 1.5 and 30°C, respectively, and showed extreme acidophilic nature. All the isolates showed obligate chemoautotrophic nature and used ferrous iron and pyrite as an energy source, however, isolates WG102 and WG103 were unable to use sulfur, while isolate WG101 could use elemental sulfur and reduced inorganic sodium thiosulfate as an energy source. The phylogenetic analyses based on 16S rRNA sequences revealed that the isolates WG101, WG102, and WG103 were homologous with Acidithiobacillus ferrooxidans strain AS2 (99%), Leptospirillum ferriphilum strain YSK (98%), and Leptospirillum ferrooxidans strain L15 (98%), respectively. These bacterial isolates showed efficient copper and zinc dissolution from the ore. The metals dissolution rate of At. ferrooxidans strain WG101 was 54.5 ± 4.33% (copper) and 49.6 ± 5% (zinc). The metals recovery rate of L.ferriphilum strain WG102 was 45.7 ± 3.5% (copper) and 40.5 ± 2.5% (zinc). The recovery rate of copper and zinc was 49.6 ± 4% and 46.5 ± 3% respectively in the case of L. ferrooxidans strain WG103. The findings of this study are consistent with the notion that the indigenous bacteria are more efficient in minerals dissolution. K E Y W O R D SAcidithiobacillus ferrooxidans, Baiyin Copper Mine, bioleaching, Leptospirillum ferriphilum, Leptospirillum ferrooxidansAbbreviations: AMD, acid mine drainage; EPS, exopolysaccharide; ORP, oxidation-reduction potential.

show abstract

“…are unable to utilize sulfur as an energy source. Yuan et al studied L. ferriphilum strain YXW and reported that the strain is unable to utilize sulfur source for energy.…”

Section: Discussionmentioning

confidence: 99%

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

Sajjad

Zheng

et al. 2018

J Basic Microbiol

View full text Add to dashboard Cite

show abstract

“…Bioleaching experiment was performed with Yuan et al (2013) modified at medium and incubator-type. This test was conducted at 250 mL flask containing 100 mL Starkey medium and 10% (v/v) isolate (10 6 cell/mL) then 5% (w/v) gold ore size was less than 74 μm in diameter was added.…”

Section: Bioleaching Experimentsmentioning

confidence: 99%

Potential of Chemolitotrophic Bacteria From Gold Mining Area in Sulfur Oxidation Process

2018

View full text Add to dashboard Cite

Gold in nature is covered by rocks which contain sulfide minerals such as pyrite, chalcopyrite, arsenopyrite, and others sulfide minerals. Chemolithotrophic bacteria have the ability to oxidize the sulfur compounds and can be used in the process of releasing gold from carrier rocks which contain sulfide minerals. This research aimed to explore and identify the chemolithotrophic bacteria from gold mining areas as well as determine their potential for sulfur oxidation. The methods used in this study were exploring the potential of bacteria in sulfur oxidation and describing the variety of bacteria that were isolated from gold mining areas by 16s rRNA identification. The results showed that there were six isolates from isolation with Starkey solid medium, i.e. Bl-1, B1-2, B1-3, B1-4, B1-5 and B1-6 that were similar to Paenibacillus sp., Enterobacter ludwigiis train E8-13, uncultured Burkholderia sp., Uncultured bacterium clone N4.5, Bacillus subtilis strain CICC 10023, and Bacterium enrichment culture clone 02 respectively. The B1-3 isolate showed the highest increase of sulfate compound in the medium (8.04 % at 649.55 ppm). This indigenous bacteria will be able to be used to release gold from rock which contains sulfide minerals and reduce the use of hazardous chemicals commonly used in gold mining.

show abstract

Metal recovery from industrial solid waste by ultrasonic-assisted hydrometallurgical leaching: a review

Ran,

Li,

Wang

et al. 2024

Environ Chem Lett

View full text Add to dashboard Cite

Effects of mutation on a new strain Leptospirillum ferriphilum YXW and bioleaching of gold ore

Cited by 14 publications

References 26 publications

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

Culture‐dependent hunt and characterization of iron‐oxidizing bacteria in Baiyin Copper Mine, China, and their application in metals extraction

Potential of Chemolitotrophic Bacteria From Gold Mining Area in Sulfur Oxidation Process

Metal recovery from industrial solid waste by ultrasonic-assisted hydrometallurgical leaching: a review

Contact Info

Product

Resources

About