Optimization of operating parameters and rate of uranium bioleaching from a low-grade ore

Rashidi, Alimorad; Roostaazad, Reza; Safdari, S J

doi:10.1007/s10967-014-3164-4

Cited by 19 publications

(4 citation statements)

References 27 publications

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“…Based on the evaluated models, three different parameter vectors were used for each model: P 1 , P 2 , and P 3 , represented in Equations ( 9)-( 11) for models 1, 2, and 3, respectively. The vector of status variables was represented as Y VE , according to Equation (12).…”

Section: Bayesian Techniques-mcmc and Particle Filtermentioning

confidence: 99%

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Use of Bayesian Methods in the Process of Uranium Bioleaching by Acidithiobacillus ferrooxidans

Cardoso,

Dias,

Moura

et al. 2023

Applied Sciences

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This research is focused on investigating the utilization of Bayesian methodologies, specifically the Markov Chain Monte Carlo method, as well as filter sampling by importance and sequential resampling. The objective is to estimate kinetic parameters and state variables associated with the uranium bioleaching process by Acidithiobacillus ferrooxidans. Experimental data of cell concentration, uranium concentration, and concentrations of ferrous and ferric ions, obtained from literature, were employed. These measurements were evaluated using a mathematical model expressed by a system of ordinary differential equations. Three different mathematical models were evaluated, considering different uncertainties in experimental measurements and mathematical models (1% and 5%). The estimation results presented a good fit to the experimental data, with coefficients of determination in the range of 0.95 to 0.99. The validation of the mathematical models was obtained by reproducing the experimental measurements and the Bayesian techniques proved to be suitable for application in the bioleaching process.

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Section: Bayesian Techniques-mcmc and Particle Filtermentioning

confidence: 99%

“…However, once the concentration limit is exceeded, it leads to the accumulation of specific metal ions in the solution, exceeding the tolerance limit of microorganisms and thereby inhibiting microbial growth and activity. Hence, slurry concentration ranges between 5% and 10% are considered acceptable [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Use of Bayesian Methods in the Process of Uranium Bioleaching by Acidithiobacillus ferrooxidans

Cardoso,

Dias,

Moura

et al. 2023

Applied Sciences

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“…6. In the test of biochar to enhance the leaching of the tailings with T. ferrooxidans, both the biochar and the tailings exhibited electronegativity at the initial stage, and the T. ferrooxidans were positively charged under this condition, so there was a competitive adsorption of T. ferrooxidans between biochar and tailings (Rashidi et al 2014). After a period of time, the surface of the biochar that had adsorbed bacteria became positively charged, but the surface potential of the tailings were still negative.…”

Section: Zeta Potential 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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“…29 Microbes can also be used to mobilize U, offering an environmentally friendly route for its extraction from ore (Figure 4B). Pal et al 42 recently demonstrated the use of A. ferrooxidans for the direct bio-oxidation and bio-leaching of uranium, and Rashidi et al 43 demonstrated the use of A. ferrooxidans with Fe cycling for uranium bio-leaching.…”

Section: Opportunity For Biological Solutionmentioning

confidence: 99%

Embracing Biological Solutions to the Sustainable Energy Challenge

Adesina

Anzai

Avalos

et al. 2017

Chem

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Biological solutions hold unique advantages to address challenges in sustainable energy. Living organisms have evolved for billions of years to solve problems in catalysis, material synthesis, carbon fixation, and energy capture and storage, including not only photosynthesis but also older metabolisms that rely on metal oxidation and reduction. These capabilities offer solutions to problems in sustainable energy, including the safe use of nuclear power, the construction and recycling of batteries, the extraction and processing of rare earth elements, and the carbon-neutral or even carbon-negative synthesis of hydrocarbon fuels. Biological self-repair, self-assembly, and self-replication offer the ability to deploy these capabilities on a global scale, and evolution can be harnessed to accelerate engineering. In this review, we discuss the opportunities for applied biology to contribute to the sustainable energy landscape, the challenges faced, and cutting-edge bioengineering that draws inspiration from fundamental research into biophysics, metabolism, catalysis, and systems biology.

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Optimization of operating parameters and rate of uranium bioleaching from a low-grade ore

Cited by 19 publications

References 27 publications

Use of Bayesian Methods in the Process of Uranium Bioleaching by Acidithiobacillus ferrooxidans

Use of Bayesian Methods in the Process of Uranium Bioleaching by Acidithiobacillus ferrooxidans

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

Embracing Biological Solutions to the Sustainable Energy Challenge

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