Bioleaching of rare earth elements from bastnaesite-bearing rock by actinobacteria

Zhang, Limin; Dong, Hailiang; Liu, Yan; Bian, Liang; Wang, Xi; Zhou, Ziqi; Huang, Ying

doi:10.1016/j.chemgeo.2018.03.023

Cited by 77 publications

(33 citation statements)

References 83 publications

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“…This may have influenced the total percentage of REEs extracted from the rock, which was generally less than 5 × 10 −2 %. These leaching rates would likely be higher with crushed rocks, which on Earth have been shown to result in leaching efficiencies of REEs of 8.0 × 10 −3 % to several tens of percent under optimised conditions 51 , 52 . Furthermore, we did not stir our reactors as we wanted to investigate the effects of microgravity and Mars gravity on cell growth in the absence of artificial mixing.…”

Section: Discussionmentioning

confidence: 99%

Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity

et al. 2020

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Microorganisms are employed to mine economically important elements from rocks, including the rare earth elements (REEs), used in electronic industries and alloy production. We carried out a mining experiment on the International Space Station to test hypotheses on the bioleaching of REEs from basaltic rock in microgravity and simulated Mars and Earth gravities using three microorganisms and a purposely designed biomining reactor. Sphingomonas desiccabilis enhanced mean leached concentrations of REEs compared to non-biological controls in all gravity conditions. No significant difference in final yields was observed between gravity conditions, showing the efficacy of the process under different gravity regimens. Bacillus subtilis exhibited a reduction in bioleaching efficacy and Cupriavidus metallidurans showed no difference compared to non-biological controls, showing the microbial specificity of the process, as on Earth. These data demonstrate the potential for space biomining and the principles of a reactor to advance human industry and mining beyond Earth.

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Section: Discussionmentioning

confidence: 99%

Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity

et al. 2020

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“…There are also publications stating that various species of Bacillus sp. are capable of extracting REE from ores and minerals [ 18 , 19 , 52 ] and accumulating them in the cell wall during biosorption and bioaccumulation [ 20 – 28 ]. Bacteria belonging to the genus Bacillus are also well known for their ability to produce a wide range of siderophores [ 29 , 30 ].…”

Section: Resultsmentioning

confidence: 99%

Diversity, Abundance, and Some Characteristics of Bacteria Isolated from Earth Material Consumed by Wild Animals at Kudurs in the Sikhote-Alin Mountains, Russia

Lebedeva

Паничев

Kharitonova

et al. 2020

International Journal of Microbiology

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In this work, geochemical and microbiological studies were performed at kudurs in the southeastern part of the Sikhote-Alin mountain range and in the Sikhote-Alin Nature Reserve located in Primorsky Krai, Russia. It was found that the earth material eaten by wild animals in both sites is represented by clay-zeolite tuffs of dacite-rhyolite composition. In the earth material, Na is predominant in bioavailable macronutrients and Zn, light lanthanides, and Y in trace elements. Microbiological studies of geophagic earths revealed a wide range of heterotrophic and autotrophic aerobes and anaerobes involved in the conversion of carbon, nitrogen, and sulfur. Iron- and manganese-oxidizing bacteria and silicate bacteria were identified as well. The isolated pure cultures of heterotrophic bacteria were represented mainly by Gram-positive spore-forming large rods of Bacillus sp. and Gram-negative heterotrophic aerobic and facultative anaerobic microorganisms Burkholderia sp. and Microvirgula aerodenitrificans, which oxidize iron and reduce sulfate. The ability of the bacteria M. aerodenitrificans to reduce sulfates is shown for the first time. According to the literature, the isolated microorganisms are able to actively extract rare earth elements from earth materials, transforming them from the bioinert state to a state accessible to herbivorous mammals.

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“…4.1 Interações entre micro-organismos e minerais Na última década, vários estudos têm sido publicados abordando as interações entre micro-organismos e minerais portadores de TRs, incluindo a solubilização de TRs a partir de matrizes sólidas por meio de reações com metabólitos microbianos (Zhang et al, 2018) e a imobilização de TRs de matrizes líquidas, principalmente por sorção por biomassa (Coimbra, Nascimento & Giese, 2017;Heidelmann et al, 2017;Coimbra et al, 2019;Giese, Barbosa-Dekker & Dekker, 2019;Giese & Jordão, 2019).…”

Section: Biolixiviação De Minérios Portadores De Terras Rarasunclassified

“…Com o objetivo de analisar o processo de biolixiviação de TRs em uma amostra de bastnasita, Zhang et al (2018) utilizaram quatro cepas de actinobactérias, sendo duas isoladas de uma mina rica em TRs na China e duas isoladas do solo vermelho ao redor da mina. Os resultados mostram que estas actinobactérias têm capacidade de biolixiviação de TRs, porém apresentam eficiência e mecanismos de ação diferenciados.…”

Section: Biolixiviação De Terras Raras: Conceito E Exemplosunclassified

Desafios Para a Extração Sustentável De Minérios Portadores De Terras Raras

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As Terras Raras são um grupo de elementos químicos que incluem todos os elementos do grupo dos lantanídeos, além do ítrio e escândio. Devido às suas propriedades químicas e físicas, as Terras Raras desempenham um papel essencial na indústria de produtos de alta tecnologia que tornam a disponibilidade destes elementos de suma importância para o avanço tecnológico, diretamente ligado à economia do país. As Terras Raras são encontradas em vários minerais, principalmente na monazita, na bastnasita, na xenotima e nas argilas de adsorção iônica. Devido à ocorrência do fenômeno de contração lantanídica, as Terras Raras possuem grande similaridade química e física, acarretando na dificuldade de separação e obtenção dos elementos lantanídeos na forma individual. Um dos grandes desafios da cadeia produtiva de Terras Raras é a busca por novos métodos de extração economicamente viáveis sem prejuízo do meio ambiente. Esta revisão bibliográfica pretende abordar os aspectos mineralógicos e químicos de diferentes minerais portadores de Terras Raras e discutir os desafios tecnológicos existentes nos processos de extração destes elementos, com foco no uso de tecnologias verdes para comporem a cadeia produtiva de Terras Raras.

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Bioleaching of rare earth elements from bastnaesite-bearing rock by actinobacteria

Cited by 77 publications

References 83 publications

Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity

Space station biomining experiment demonstrates rare earth element extraction in microgravity and Mars gravity

Diversity, Abundance, and Some Characteristics of Bacteria Isolated from Earth Material Consumed by Wild Animals at Kudurs in the Sikhote-Alin Mountains, Russia

Desafios Para a Extração Sustentável De Minérios Portadores De Terras Raras

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