Effect of mineral constituents in the bioleaching of uranium from uraniferous sedimentary rock samples, Southwestern Sinai, Egypt

Amin, Maisa M.; El-Aassy, Ibrahim E.; El-Feky, Mohamed G.; Sallam, Abdel Sattar M.; Talaat, M.S.; Kawady, Nilly A.

doi:10.1016/j.jenvrad.2014.02.024

Cited by 23 publications

(4 citation statements)

References 24 publications

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“…It was observed that higher removal percentages of heavy metals were obtained in the fungal bioleaching experiment with lower solid content; however, increased solid content resulted in declined heavy metal removal and increased reaction time. This observation was also found in the studies of Urik et al [16], Mirazimi et al [19] and Amin et al [27]. On the other hand, Gharehbagheri et al [26] revealed that the production of organic acids and the efficiency of metal leaching increased with increasing sucrose (substrate) concentration in the bioleaching of uranium ores by A. niger.…”

Section: Introductionsupporting

confidence: 65%

“…where M n+ represents the metal ions with certain valence. The performance of fungal bioleaching is commonly affected by various parameters, such as solid content, substrate concentration, fungus species, initial pH, inoculum size, temperature and particle size [18,19,[26][27][28][29]. A thorough understanding of these parameters is very important for scale-up, reactor design and practical application of bioleaching technology.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Solid Content and Substrate Concentration on Bioleaching of Heavy Metals from Sewage Sludge Using Aspergillus niger

Chen¹,

Wang²

2019

Metals

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The presence of heavy metals in sewage sludge not only affects the performance of sludge anaerobic digestion process but also restricts the land application of treated sewage sludge. Therefore, a fungi-mediated bioleaching process for simultaneous metal leaching and sludge digestion by Aspergillus niger was developed to treat the sewage sludge containing heavy metals in this study. The effects of two important parameters, sludge solid content and substrate (sucrose) concentration, on the performance of fungal bioleaching were investigated in this study. The results showed that the rate of pH reduction increased with increasing sludge solid contents and sucrose concentrations. In this study, the efficiency of metal removal decreases in the order of Mn > Zn > Ni > Pb. The efficiencies of metal leaching and solid degradation (SS and VSS) were found to be decreased with an increase of sludge solid content and a decrease of sucrose concentration. At 2 days of reaction time, the maximum efficiency of metal solubilization was 95, 56, 21 and 13% for Mn, Zn, Ni and Pb, respectively.

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Section: Introductionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Effects of Solid Content and Substrate Concentration on Bioleaching of Heavy Metals from Sewage Sludge Using Aspergillus niger

Chen¹,

Wang²

2019

Metals

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“…A. niger and A. flavus are predisposed to produce a variety of organic acids (citric and oxalic) for effectively solubilizing rare earth elements (REEs). Amin et al (2014) tested the ability of some fungi isolated from Sinai Peninsula carbonaceous shales to leach REEs from these rocks by microbial means and found that A. niger and A. flavus were the most efficient microorganisms.…”

Section: Discussionmentioning

confidence: 99%

Talaromyces sayulitensis, Acidiella bohemica and Penicillium citrinum in Brazilian oil shale by-products

Goes

Silva

Lovato

et al. 2017

Antonie van Leeuwenhoek

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Fine shale particles and retorted shale are waste products generated during the oil shale retorting process. These by-products are small fragments of mined shale rock, are high in silicon and also contain organic matter, micronutrients, hydrocarbons and other elements. The aims of this study were to isolate and to evaluate fungal diversity present in fine shale particles and retorted shale samples collected at the Schist Industrialization Business Unit (Six)-Petrobras in São Mateus do Sul, State of Paraná, Brazil. Combining morphology and internal transcribed spacer (ITS) sequence, a total of seven fungal genera were identified, including Acidiella, Aspergillus, Cladosporium, Ochroconis, Penicillium, Talaromyces and Trichoderma. Acidiella was the most predominant genus found in the samples of fine shale particles, which are a highly acidic substrate (pH 2.4-3.6), while Talaromyces was the main genus in retorted shale (pH 5.20-6.20). Talaromyces sayulitensis was the species most frequently found in retorted shale, and Acidiella bohemica in fine shale particles. The presence of T. sayulitensis, T. diversus and T. stolli in oil shale is described herein for the first time. In conclusion, we have described for the first time a snapshot of the diversity of filamentous fungi colonizing solid oil shale by-products from the Irati Formation in Brazil.

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“…(c) During redoxolysis, metal solubilization is promoted by its enzymatic oxidation or reduction, while in (d) bioaccumulation the soluble metal ions can be transported through the cell membrane and accumulate as solid particle within the cell or in vacuoles (Asghari et al 2013 ; Srichandan et al 2019 ). The organic acids identified to be associated with bioleaching include citric acid, gluconic acid, oxalic acid, citramalic acid, acetic acid, succinic acid and itaconic acid (Gadd 1999 ; Adeleke et al 2010 ; Amin et al 2014 ; Brisson et al 2016 , 2020 ). Fungal bioleaching species include, but is not limited to, Penicillium spp.…”

Section: Space Biomining Principlesmentioning

confidence: 99%

The smallest space miners: principles of space biomining

2022

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As we aim to expand human presence in space, we need to find viable approaches to achieve independence from terrestrial resources. Space biomining of the Moon, Mars and asteroids has been indicated as one of the promising approaches to achieve in-situ resource utilization by the main space agencies. Structural and expensive metals, essential mineral nutrients, water, oxygen and volatiles could be potentially extracted from extraterrestrial regolith and rocks using microbial-based biotechnologies. The use of bioleaching microorganisms could also be applied to space bioremediation, recycling of waste and to reinforce regenerative life support systems. However, the science around space biomining is still young. Relevant differences between terrestrial and extraterrestrial conditions exist, including the rock types and ores available for mining, and a direct application of established terrestrial biomining techniques may not be a possibility. It is, therefore, necessary to invest in terrestrial and space-based research of specific methods for space applications to learn the effects of space conditions on biomining and bioremediation, expand our knowledge on organotrophic and community-based bioleaching mechanisms, as well as on anaerobic biomining, and investigate the use of synthetic biology to overcome limitations posed by the space environments.

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Effect of mineral constituents in the bioleaching of uranium from uraniferous sedimentary rock samples, Southwestern Sinai, Egypt

Cited by 23 publications

References 24 publications

Effects of Solid Content and Substrate Concentration on Bioleaching of Heavy Metals from Sewage Sludge Using Aspergillus niger

Effects of Solid Content and Substrate Concentration on Bioleaching of Heavy Metals from Sewage Sludge Using Aspergillus niger

Talaromyces sayulitensis, Acidiella bohemica and Penicillium citrinum in Brazilian oil shale by-products

The smallest space miners: principles of space biomining

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