Bioleaching: A microbial process of metal recovery; A review

Mishra, Dhaneshwar; Kim, Dong Jin; Ahn, Jong Gwan; Rhee, Young Ha

doi:10.1007/bf03027450

Cited by 117 publications

(53 citation statements)

References 43 publications

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“…Therefore, it was quite evident that SRB plays a critical role in enhancing corrosion (particularly pitting corrosion). These results are in good agreement with previous reports [11][12][13][14][15][16][17][18][19][20] that also showed the pitting corrosion of stainless steel and copper steel by SRB. Figure 9 shows SEM photographs of SRB growing on the surface of steel.…”

Section: Resultssupporting

confidence: 95%

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Electrochemical analysis of the microbiologically influenced corrosion of steels by sulfate-reducing bacteria

et al. 2007

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The differences between the general corrosion and microbiologically influenced corrosion (MIC) of steels were investigated in terms of its electrochemical behavior and surface phenomena. The corrosion potential of steels in the absence of SRB (sulfate-reducing bacteria) shifted to a negative value with the immersion time. However, the potential of the presence of SRB shifted to a positive value after 30 days' incubation, indicating the growth of SRB biofilms on the test metal specimens and the formation of corrosion products. In addition, the color of a medium inoculated with SRB changed from gray to black. The change in color appeared to be caused by the formation of pyrites (FeS) as a corrosion product, while no significant change in color was observed in a medium without SRB inoculation. Moreover, corrosion rates of various steels tested for MIC were higher compared to those of steels in the absence of SRB. In particular, the corrosion current density of TMCP steels in the presence of SRB was larger than that of other steels. Pitting corrosion was also observed at the surface of all steels in the SRB-inoculated medium. The pitting corrosion likely occurred due to SRB that was associated with the increasing corrosion rates through increasing cathodic reactions, which caused a reduction of sulfate to sulfide as well as the formation of an oxygen concentration cell.

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Section: Resultssupporting

confidence: 95%

“…Figure 9 shows SEM photographs of SRB growing on the surface of steel. The morphology of the SRB used in this study was similar to that of other results [11][12][13][14][15][16][17][18][19][20].…”

Section: Resultssupporting

confidence: 65%

Electrochemical analysis of the microbiologically influenced corrosion of steels by sulfate-reducing bacteria

et al. 2007

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“…A irrigação facilita o aumento da atividade microbiana, resultando no aumento da acidez, no favorecimento das reações de oxidorredução decorrentes da produção de ácido sulfúrico "in situ" e na geração de íons ferro(III). Desta maneira, ao final do processo, o metal de interesse é solubilizado e recuperado [17,18].…”

Section: Técnicas Para Aplicação Da Biolixiviaçãounclassified

Biolixiviação: Uma Avaliação Das Inovações Tecnológicas Na Biomineração De Minerais Sulfetados No Período De 1991 a 2015

Giese¹

2017

Tecnologia Em Metalurgia Materiais E Mineração

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2176-1523 © ano Associação Brasileira de Metalurgia, Materiais e Mineração. Publicado pela ABM. Este é um artigo de acesso aberto distribuído sob os termos da licença Creative Commons CC BY-NC-ND (Attribution-NonCommercial-NoDerivs) -https:// creativecommons.org/licenses/by-nc-nd/4.0/. a Resumo O desenvolvimento de inovações tecnológicas nos processos de biolixiviação tem sido constante, principalmente, pelo fato dos processos biohidrometalúrgicos oferecerem vantagens frente às plantas convencionais, v. g., a diminuição dos custos operacionais e de geração de resíduos. O objetivo deste trabalho foi avaliar o perfil das competências tecnológicas relacionadas à este processo através do estudo das patentes depositadas na base de dados da Organização Mundial de Propriedade Intelectual (OMPI) nos últimos 25 anos. Observou-se que, entre os anos de 1991 e 2015, cerca de 328 patentes foram depositadas na Patentscope, destacando-se a China e EUA que somados detém igualmente 44% dos registros. A partir dos resultados obtidos nesta pesquisa, foi traçado um paralelo entre os depósitos de patentes e a economia mineral. A análise dos dados obtidos permitiu descrever as tecnologias preferencialmente protegidas dos processos de biolixiviação. Palavras-chave: Bio-hidrometalurgia; Biolixiviação; Patentes. BIOLEACHING: AN EVALUATION OF TECHNOLOGICAL INNOVATIONS ON THE SULPHIDE MINERALS IN THE PERIOD OF 1991 TO 2015 AbstractThe development of technological innovations in bioleaching has been constant, especially, the use of these biohydrometallurgical processes offer advantages over conventional plants, such as lower operating costs and waste generation. The objective of this study was to evaluate the potential of technological competence related to this process through the analysis of patents in the database of the World Intellectual Property Organization (WIPO) in the last 25 years. It was observed that between the years 1991 and 2015, about 328 patents were filed in Patenstcope, especially China and USA which added also holds 44% of the documents. From obtained results, it has drawn a parallel between the patent deposits and the mineral economy. The analysis of the data allowed describing the technologies protected preferably of bioleaching processes. Keywords: Biohydrometallurgy; Bioleaching; Patents. INTRODUÇÃOA cadeia produtiva da metalurgia de minerais não-ferrosos, de maneira geral, envolve processos de concentração (moagem, britagem, flotação e secagem), seguido de pirometalurgia ou hidrometalurgia [1,2]. Todavia, estes processos convencionais não se apresentam economicamente viáveis para a extração de metais a partir de minérios oxidados ou minérios de baixo teor notadamente pelos elevados custos de energia e insumos despendidos [3,4].Em virtude disso, paulatinamente, surgiu a necessidade de se buscar alternativas dentro de um cenário da hidrometalurgia extrativa: a) expectativa com a diminuição dos recursos minerais; b) necessidades comerciais se ampliando devido ao desenvolvimento tecnológico; c) aumento da produção de ...

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“…To identify the adequate leaching conditions of Manganese(II) from nodules, Choi et al [62] combined isolated heterotrophic bacteria fed with corn starch, an economical carbon source. Some review articles on bioleaching from mineral concentrates have provided additional relevant information [59,67,71].…”

Section: Bioleaching Of Ores and Metal Concentratesmentioning

confidence: 99%

Experiences and Future Challenges of Bioleaching Research in South Korea

et al. 2016

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This article addresses the state of the art of bioleaching research published in South Korean Journals. Our research team reviewed the available articles registered in the Korean Citation Index (KCI, Korean Journal Database) addressing the relevant aspects of bioleaching. We systematically categorized the target metal sources as follows: mine tailings, electronic waste, mineral ores and metal concentrates, spent catalysts, contaminated soil, and other materials. Molecular studies were also addressed in this review. The classification provided in the present manuscript details information about microbial species, parameters of operation (e.g., temperature, particle size, pH, and process length), and target metals to compare recoveries among the bioleaching processes. The findings show an increasing interest in the technology from research institutes and mineral processing-related companies over the last decade. The current research trends demonstrate that investigations are mainly focused on determining the optimum parameters of operations for different techniques and minor applications at the industrial scale, which opens the opportunity for greater technological developments. An overview of bioleaching of each metal substrate and opportunities for future research development are also included.

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Bioleaching: A microbial process of metal recovery; A review

Cited by 117 publications

References 43 publications

Electrochemical analysis of the microbiologically influenced corrosion of steels by sulfate-reducing bacteria

Electrochemical analysis of the microbiologically influenced corrosion of steels by sulfate-reducing bacteria

Biolixiviação: Uma Avaliação Das Inovações Tecnológicas Na Biomineração De Minerais Sulfetados No Período De 1991 a 2015

Experiences and Future Challenges of Bioleaching Research in South Korea

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