Microbial mobilization of rare earth elements (REE) from mineral solids—A mini review

Barmettler, Fabienne; Castelberg, Claudio; Fabbri, Carlotta; Brandl, Helmut

doi:10.3934/microbiol.2016.2.190

Cited by 55 publications

(28 citation statements)

References 23 publications

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“…Para os minérios de baixo teor, esses métodos convencionais geralmente exigem uma alta demanda de energia para gerar altas temperaturas ou dispendem do uso de maior quantidade de reagentes químicos, o que aumenta o custo do processo e a geração de resíduos (Barmettler et al, 2016). Assim, há uma necessidade de se buscar novas metodologias alternativas de extração de TRs a partir destes minerais.…”

Section: Department Of Energy 2010)unclassified

Desafios Para a Extração Sustentável De Minérios Portadores De Terras Raras

Souza

Nascimento

Giese

2019

HOLOS

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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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Section: Department Of Energy 2010)unclassified

Desafios Para a Extração Sustentável De Minérios Portadores De Terras Raras

Souza

Nascimento

Giese

2019

HOLOS

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“…Both autotrophic bacteria and heterotrophic microorganisms have been also used for REE leaching from native minerals (Brisson et al, 2016;Desouky et al, 2016;Ibrahim and El-Sheikh, 2011;Shin et al, 2015); however, only a limited number of studies is currently available on REE leaching from secondary sources (Beolchini et al, 2012;Muravyov et al, 2015;Qu and Lian, 2013) including electronic waste (Beolchini et al, 2012;Marra et al, 2018b;Reed et al, 2016). Notwithstanding, the REE microbe-interaction is not well understood (Barmettler et al, 2016).…”

Section: Biometallurgymentioning

confidence: 99%

The recovery of metals from WEEE: state of the art and future perspectives

Marra¹,

Cesaro²,

Belgıorno³

2018

Global NEST Journal

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<p>Metals are essential elements in the modern technology as they are widely used for several industrial applications such as the manufacturing of electronic devices. Besides common metals, such as copper, iron and aluminium, electronic appliances can contain precious metals as well as metals defined as critical, including rare earth elements (REEs). In this regard, the chance to recycle metals from end-of-life appliances, namely Waste Electrical and Electronic Equipment (WEEE), has benefits for both the economy and the environment in terms of its protection and conservation. However, the existing recycling industry for the recovery of metals from WEEE is still in its infant stage and mostly addressed to the recovery of base metals; precious metals are also extracted, while REEs are practically almost never recycled. The present work provides a comprehensive overview of the recycling technologies currently applied for the recovery of metals from WEEE, including the recovery of REEs, for which few and fragmented information is available in literature due to the limited experience and the restriction imposed by trade secrets. Advantages, as well as limits of both conventional technologies and recent research developments, are discussed and future perspectives are lastly pointed out.</p>

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“…Es gibt auch eine Reihe von Mikroorganismen, die unter neutralen oder alkalischen Bedingungen Bioleaching betreiben können, z.B. Aspergillus niger , Pseudomonas aeroginosa oder Desulfovibrio desulfuricans . Diese lösen Metalle durch enzymatische Reduktion der oxidierten Mineralbestandteile durch Bildung von organischen oder anorganischen Säuren oder durch die Ausscheidung von Komplexbildnern.…”

Section: Recycling Von Sekundärrohstoffen Mittels Bioleachingunclassified