Effects of energy source on bioleaching of vanadium-bearing shale by Acidithiobacillus ferrooxidans

He, Jingtao; Cai, Zhaoling; Zhang, Yimin; Xue, Nan; Wang, Xingjie; Zheng, Qiushi

doi:10.1016/j.bej.2019.107355

Cited by 20 publications

(2 citation statements)

References 37 publications

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“…In addition, ferrous ions played an essential role in controlling the formation of jarosite nuclei and precipitate formation (Wei et al 2018a,b). The addition of biochar led to a decrease in the free Fe 2+ content in the liquid environment, thereby indirectly inhibiting the formation of jarosite (He et al 2019). An appropriate amount of biochar effectively reduced the production of jarosite precipitation and weakened the passivation effect of bioleaching, thereby facilitating the leaching of heavy metals by T. ferrooxidans.…”

Section: Sem-eds Analysismentioning

confidence: 99%

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Dong

Chong

Lin

2021

Environ Sci Pollut Res

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Among the many extraction technologies for recovering metal resources from tailings, bioleaching technology is gradually showing its momentum. In our research, the enhanced effect of biochar on the bioleaching of stone coal tailings by Thiobacillus ferrooxidans (T. ferrooxidans) has been explored. In the static bioleaching experiment for 10 days, the leaching rate of vanadium (V) and copper (Cu) increased by 26.8% and 21.0% respectively after adding 5 g/L biochar. The dynamic bioleaching experiment further verified that under the promotion of biochar, the 44 day cumulative leaching rate of V and Cu increased by 15.3% and 14.5%, respectively. The promoting effect of biochar on T. ferrooxidans was mainly reflected in two aspects. The unique porous structure of biochar created a microenvironment for free microorganisms for inhabitation, while storing abundant nutrients. Biochar can also act as an excellent electronic medium to promote electron transfer, improving the oxidation ability of T. ferrooxidans on Fe 2+ . Furthermore, the presence of biochar may effectively inhibit the formation of jarosite precipitation on tailings in bioleaching, thereby improving the dissolution of tailings and the release of metal elements. This study demonstrates that biochar-enhanced bioleaching may be an efficient and environmentally friendly method for recovering metal resources from tailings.

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Section: Sem-eds Analysismentioning

confidence: 99%

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Dong

Chong

Lin

2021

Environ Sci Pollut Res

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“…Bioleaching strategies have also been tested for vanadium recovery including oxidative and organic acid leaching from spent catalysts by Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, and Aspergillus niger (Muddanna and Baral, 2019;Mikoda et al, 2020;Pradhan et al, 2021); shale by At. ferrooxidans (He et al, 2019); red mud with the fungi A. niger and Penicillium tricolor (Qu et al, 2019); and steel slag by a mixed consortium of acidophilic bacteria dominated by At. ferrooxidans and At.…”

Section: Introductionmentioning

confidence: 99%

Towards Bioleaching of a Vanadium Containing Magnetite for Metal Recovery

et al. 2021

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Vanadium – a transition metal – is found in the ferrous-ferric mineral, magnetite. Vanadium has many industrial applications, such as in the production of high-strength low-alloy steels, and its increasing global industrial consumption requires new primary sources. Bioleaching is a biotechnological process for microbially catalyzed dissolution of minerals and wastes for metal recovery such as biogenic organic acid dissolution of bauxite residues. In this study, 16S rRNA gene amplicon sequencing was used to identify microorganisms in Nordic mining environments influenced by vanadium containing sources. These data identified gene sequences that aligned to the Gluconobacter genus that produce gluconic acid. Several strategies for magnetite dissolution were tested including oxidative and reductive bioleaching by acidophilic microbes along with dissimilatory reduction by Shewanella spp. that did not yield significant metal release. In addition, abiotic dissolution of the magnetite was tested with gluconic and oxalic acids, and yielded 3.99 and 81.31% iron release as a proxy for vanadium release, respectively. As a proof of principle, leaching via gluconic acid production by Gluconobacter oxydans resulted in a maximum yield of 9.8% of the available iron and 3.3% of the vanadium. Addition of an increased concentration of glucose as electron donor for gluconic acid production alone, or in combination with calcium carbonate to buffer the pH, increased the rate of iron dissolution and final vanadium recoveries. These data suggest a strategy of biogenic organic acid mediated vanadium recovery from magnetite and point the way to testing additional microbial species to optimize the recovery.

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The Recycling of Vanadium from Steelmaking Slags: A Review

Shyrokykh,

Volkova,

Sridhar

2024

steel research int.

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Vanadium is an extremely valuable industrial metal typically obtained from processing metallurgical slags. This article provides a comprehensive review and critical evaluation of the technologies of vanadium extraction from slags aiming to identify the most prospective technology. The review covers traditional approaches for treating V‐bearing slags, such as salt roasting followed by acid leaching and ammonium precipitation, as well as promising alternative methods in this field, such as bioleaching, ultrasound‐assisted leaching, and vaporization. The current industrial practice remains energy‐intensive and is associated with chemical waste generation, thus leaving room for further improvements. Overall, this work provides valuable insights into the recycling of vanadium from steelmaking slags including extraction efficiencies of industrial and lab‐scale methods, and discusses the advantages and disadvantages of each method setting the stage for future advancements in this field. The vaporization method is one of the most promising among those reviewed.

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Effects of energy source on bioleaching of vanadium-bearing shale by Acidithiobacillus ferrooxidans

Cited by 20 publications

References 37 publications

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Towards Bioleaching of a Vanadium Containing Magnetite for Metal Recovery

The Recycling of Vanadium from Steelmaking Slags: A Review

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