Bioremediation of heavy metals by using bacterial mixtures

Kang, Chang-Ho; Kwon, Yoon-Jung; So, Jae-Seong

doi:10.1016/j.ecoleng.2016.01.023

Cited by 280 publications

(103 citation statements)

References 33 publications

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“…Microorganisms are primarily used in the bioremediation to degrade or detoxify the pollutants into harmless and less toxic forms. Several studies reported the bioremediation of metal(loid)s by using microorganisms [8][9][10][11]. In addition, the use of microbial metabolic products widely analysed new tool increasing the removal of metal(loid)s from contaminated soil/water.…”

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of a biosurfactant-producing heavy metal resistant Rahnella sp. RM isolated from chromium-contaminated soil

Govarthanan

Mythili²,

Selvankumar³

et al. 2017

Biotechnol Bioproc E

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Objective of the study was to isolate heavy metal resistant bacteria from chromiumcontaminated subsurface soil and investigate biosurfactant production and heavy metal bioremediation. Based on 16S rRNA gene sequence and phylogenetic analysis, the isolate was identified as Rahnella sp. RM. The biosurfactant production by heavy metal resistant Rahnella sp. RM was optimized using Box-Behnken design (BBD). The maximum emulsification activity was obtained 66 % at 6 % soybean meal in pH 7.0 and 33.5 °C. The biosurfactant was characterized using Field emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FT-IR) and matrix assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF). The highest metal removal rates using the biosurfactant were found 74.3, 72.5, and 70.1 %, respectively, at the 100 mg/L amended flasks at 48 h. This study indicated the biosurfactant from heavy metal resistant Rahnella sp. RM could be used as a potential tool to remediate the metals in contaminated environments.

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Section: Introductionmentioning

confidence: 99%

Isolation and characterization of a biosurfactant-producing heavy metal resistant Rahnella sp. RM isolated from chromium-contaminated soil

Govarthanan

Mythili²,

Selvankumar³

et al. 2017

Biotechnol Bioproc E

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“…Em 2015 ocorreu uma redução no número de amostras positivas (6) (KANG et al, 2016;KAR et al, 2008;MORAIS et al , 2012;NAIK, DUBEY, 2013).…”

Section: Hemoculturas Positivas Em 2015unclassified

Verificação Da Temperatura De Distribuição De Refeições Quentes Ofertadas Em Uma Instituição De Longa Permanência Para Idosos E a Correlação Com O Crescimento Microbiológico

Souza¹,

Pinto²,

Sobrinho³

et al. 2019

Pesquisa Científica E Tecnológica Em Microbiologia

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0).O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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“…Then, the conditions for the proliferation of ureolytic bacteria could be considered. Furthermore, Kang et al [50] reported that mixed cultures present advantages over mono cultures, such as a major metal tolerance and a higher degree of removal of heavy metals. Moreover, the presence of non-ureolytic bacteria in mono or mixed culture can contribute to MICP; even though no contribution for urea hydrolysis is expected, an increase in the nucleation sites may increase the precipitation rates.…”

Section: Inoculum (Soil/wastewater)mentioning

confidence: 99%

Can Microbially Induced Calcite Precipitation (MICP) through a Ureolytic Pathway Be Successfully Applied for Removing Heavy Metals from Wastewaters?

et al. 2018

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Microbially induced calcite precipitation (MICP) through a ureolytic pathway is a process that promotes calcite precipitation as a result of the urease enzymatic activity of several microorganisms. It has been studied for different technological applications, such as soil bio-consolidation, bio-cementation, CO 2 sequestration, among others. Recently, this process has been proposed as a possible process for removing heavy metals from contaminated soils. However, no research has been reported dealing with the MICP process for heavy metal removal from wastewater/waters. This (re)view proposes to consider to such possibility. The main characteristics of MICP are presented and discussed. The precipitation of heavy metals contained in wastewaters/waters via MICP is exanimated based on process characteristics. Moreover, challenges for its successful implementation are discussed, such as the heavy metal tolerance of inoculum, ammonium release as product of urea hydrolysis, and so on. A semi-continuous operation in two steps (cell growth and bio-precipitation) is proposed. Finally, the wastewater from some typical industries releasing heavy metals are examined, discussing the technical barriers and feasibility.

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Bioremediation of heavy metals by using bacterial mixtures

Cited by 280 publications

References 33 publications

Isolation and characterization of a biosurfactant-producing heavy metal resistant Rahnella sp. RM isolated from chromium-contaminated soil

Isolation and characterization of a biosurfactant-producing heavy metal resistant Rahnella sp. RM isolated from chromium-contaminated soil

Verificação Da Temperatura De Distribuição De Refeições Quentes Ofertadas Em Uma Instituição De Longa Permanência Para Idosos E a Correlação Com O Crescimento Microbiológico

Can Microbially Induced Calcite Precipitation (MICP) through a Ureolytic Pathway Be Successfully Applied for Removing Heavy Metals from Wastewaters?

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