Immobilization of bacterial association in alginate beads for bioremediation of oil-contaminated lands

doi:10.22364/eeb.15.09

Cited by 4 publications

(3 citation statements)

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“…For example, the use of immobilized cells in bioleaching (Martínez and Parada 2013), heavy metals Khare 2012, Mishra 2013), mercury and rare-earth elements biosorption (Coimbra et al 2017, Corrêa et al 2017, Coimbra et al 2019, acid mine drainage (Long et al 2004), bioremediation (Zommere and Nikolajeva 2017), and H 2 S removal (Chung et al 2010) have all been examined. However, most of these investigations were perfomed at laboratorial level, and applications of immobilized cells in mining activities in the open environment and industrial scale have yet to be realized.…”

Section: Introductionmentioning

confidence: 99%

Mining Applications of Immobilized Microbial Cells in an Alginate Matrix: An Overview

Giese

2020

RICA

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Immobilized microbial cells have been used extensively in various industrial processes. However, immobilized cells have not been used widely for mining industrial applications. Cell immobilization consists of a technique by which microorganisms are confined through physical or chemical interactions in a matrix, or fixed to the surface of the immobilizing agent. In recent years, entrapment of cells within spheres of Ca 2+ alginate has become the most widely used technique for immobilizing living cells. This review examines many of the scientific and technical aspects involved in using Ca 2+ alginate immobilized microbial cells in mining activities, with a particular focus on the biohydrometallurgical industrial applications and processes of soil bioremediation in heavy metal contaminated mining areas, environmental recovery of atmospheric emissions containing H2S and treatment of acid mine drainage.Palabras clave: alginato de Ca 2+ , industria minera, inmovilización celular, recuperación ambiental RESUMEN Las células microbianas inmovilizadas se han utilizado ampliamente en diversos procesos industriales. Sin embargo, no se han usado de manera tan extensa en las aplicaciones para la industria minera. La inmovilización celular consiste en una técnica mediante la cual los microorganismos se confinan a través de interacciones físicas o químicas en una matriz, o se fijan a la superficie del agente inmovilizador. En los últimos años, el atrapamiento de las células dentro de esferas de alginato de Ca 2+ se ha convertido en la técnica más utilizada para inmovilizar las células vivas. Esta revisión examina muchos de los aspectos científicos y técnicos que abarca el uso de células microbianas inmovilizadas con alginato de Ca 2+ en aplicaciones en las actividades mineras, con un enfoque particular en las industriales biohidrometalúrgicas y en los procesos de biorremediación de suelos en áreas mineras contaminadas con metales pesados, recuperación ambiental de emisiones atmosféricas que contienen H2S y tratamiento del drenaje ácido de minas.

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Section: Introductionmentioning

confidence: 99%

Mining Applications of Immobilized Microbial Cells in an Alginate Matrix: An Overview

Giese

2020

RICA

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“…In the lower extremes, supplementation may facilitate biodegradation. Studies seeking to enhance bioaugmentation have had favorable results, by modifying and/or immobilizing cells in lab scale and mesocosm studies. − …”

Section: Bioremediation Of Oil Spillsmentioning

confidence: 99%

“…Microbial cells that have been immobilized are microbes whose movement is either severely limited or completely restricted by attaching to an interface or surface by adsorption, entrapment, or encapsulation . Immobilized cells are useful for wastewater bioremediation and are being investigated as a way to enhance bioremediation of oil spills. − ,− The benefits of using immobilized cells are similar to that of biofilm dwelling cells: improved cell concentrations and growth rates, enhanced protection against shear damage and unsafe environments, and increased biofilm production, which should lead to increased bioremediation of oil spills.…”

Section: Bioremediation Of Oil Spillsmentioning

confidence: 99%

Nano-enhanced Bioremediation for Oil Spills: A Review

2021

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Oil seepage and spills have lasting detrimental effects on the environment, especially on nearby marine ecosystems. Despite quick and safe removal of contaminating oil being of utmost importance, remediation methods have remained largely unchanged over the last 20+ years. Removal methods such as skimmers, in situ burning, and sorbents can be difficult to implement in inclement weather. Marine microorganisms consume spilled oil as a primary energy source in a method known as bioremediation. Recently the introduction of nanoparticles to areas contaminated by oil has emerged as a potential method to enhance the efficacy of oil degradation by marine microorganisms. Nanoparticles have been primarily utilized as magnetic sorbents but can also act as emulsifiers, increasing the bioavailability of the oil by giving microbes a surface (droplets) to which they can attach and facilitate proliferation. Emulsification increases the oil−water interfacial area and often leads to an increase in the amount of oil degraded by microorganisms. Nanoenhanced bioremediation is effective on a variety of oil compositions and is minimally impacted by weather. It offers a sustainable alternative to traditional remediation methods, i.e., chemical dispersants, sorbents, and in situ burning, which are often toxic and ineffective.

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