Actinobacteria consortium as an efficient biotechnological tool for mixed polluted soil reclamation: Experimental factorial design for bioremediation process optimization

Aparicio, Juan Daniel; Raimondo, Enzo Emanuel; Gil, Raúl A.; Benimeli, Claudia Susana; Polti, Marta Alejandra

doi:10.1016/j.jhazmat.2017.08.041

Cited by 58 publications

(24 citation statements)

References 40 publications

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“…The reason may be that an equilibrium concentration (threshold) was reached, and/or the concentration was so low (1 mg kg −1 ) that it is very difficult to stimulate biological reduction of the metal ( Simón Solá et al., 2019 ). These findings agree with those of previous studies ( Aparicio et al., 2018a , 2018b ; Polti et al., 2014 , 2009 ).…”

Section: Resultssupporting

confidence: 94%

“…The presence of both organic and inorganic pollutants in soil is a widespread problem, since more than a third of polluted sites contain more than one type of pollutant ( Polti et al., 2014 ). In particular, mixed pollution with the metal hexavalent chromium [Cr(VI)] and the pesticide lindane has been detected recently in different parts of the world, where both compounds have been reported in concentrations that exceeded the allowed maxima ( Aparicio et al., 2018a , 2018b ; Arienzo et al., 2013 ).…”

Section: Introductionmentioning

confidence: 99%

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Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation

Lacalle

Aparicio

Artetxe

et al. 2020

Heliyon

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Gentle Remediation Options (GROs), such as biostimulation, bioaugmentation, phytoremediation and vermiremediation, are cost-effective and environmentally-friendly solutions for soils simultaneously polluted with organic and inorganic compounds. This study assessed the individual and combined effectiveness of GROs in recovering the health of a soil artificially polluted with hexavalent chromium [Cr(VI)] and lindane. A greenhouse experiment was performed using organically-amended vs. non-amended mixed polluted soils. All soils received the following treatments: (i) no treatment; (ii) bioaugmentation with an actinobacteria consortium; (iii) vermiremediation with Eisenia fetida ; (iv) phytoremediation with Brassica napus ; (v) bioaugmentation + vermiremediation; (vi) bioaugmentation + phytoremediation; and (vii) bioaugmentation + vermiremediation + phytoremediation. Soil health recovery was determined based on Cr(VI) and lindane concentrations, microbial properties and toxicity bioassays with plants and worms. Cr(VI) pollution caused high toxicity, but some GROs were able to partly recover soil health: (i) the organic amendment decreased Cr(VI) concentrations, alleviating toxicity; (ii) the actinobacteria consortium was effective at removing both Cr(VI) and lindane; (iii) B. napus and E. fetida had a positive effect on the removal of pollutants and improved microbial properties. The combination of the organic amendment, B. napus , E. fetida and the actinobacteria consortium was the most effective strategy.

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Section: Resultssupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation

Lacalle

Aparicio

Artetxe

et al. 2020

Heliyon

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“…Our mixed-substrate assays simulated the main bioremediation challenge when creating new cost-effective and viable technologies for environmental remediation applications (Vinuselvi et al 2012;Aparício et al 2018). We encourage further studies that promote an in-depth investigation of the effects of perfluorinated compounds in diminishing removal efficiency of aromatics.…”

Section: Co 2 Production Ratementioning

confidence: 87%

Fluorinated waste and firefighting activities: biodegradation of hydrocarbons from petrochemical refinery soil co-contaminated with halogenated foams

Montagnolli

Lopes

Bidóia

2018

Environ Sci Pollut Res

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Perfluorinated compounds, including fluorotelomers, are important constituents of firefighting foams to extinguish fuel fires in the petrochemical industry, airports, and at fire-training sites. In this study, we monitored the biodegradation process in a co-contamination scenario with monoaromatic hydrocarbons commonly found in fuels (benzene, toluene) and fluorotelomers. The CO production rates were evaluated by a factorial design taking into account the effect of seasonality at in situ natural attenuation processes. Headspace analysis by gas chromatography with a thermal conductivity detector (GC-TCD) was applied to detect CO production, whereas monoaromatics were analyzed by gas chromatography coupled to mass spectrometry (GC-MS). According to our results, seasonality had a detectable effect during summer, yielding different CO production rates. Higher temperatures increased CO production rate, while higher concentrations of fluorotelomer inhibited the biodegradation process. On average, benzene and toluene were depleted 17.5 days earlier in control assays without fluorotelomers. Toluene removal efficiency was also notably higher than benzene. The noticeable decrease in degradation rates of monoaromatics was caused by perfluorinated compounds that are possibly linked to metabolic inhibition mechanisms. Fluorotelomer diminished catabolism in all of our batch cultures. In addition to this, an alternative production of by-products could be detected. Thus, we propose that transient components of the benzene and toluene degradation may be differentially formed, causing the benzene, toluene, and perfluorinated co-contaminations to go through switched metabolic stages under the presence of fluoride in a contamination scenario.

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“…The most prominent strategy to ameliorate this problem is to include mixed cultures, involving several species, to each perform one or many aspects of the cleanup for a given area [ 152 ]. This has been investigated as a promising treatment in mixed heavy-metal cleanup as well as in the removal of pollutants that involve both heavy metals and organic/inorganic pesticides [ 170 , 171 ]. Certain actinomycetes such as species of Rhodococcus [ 81 ] and Streptomyces [ 172 ] are able to degrade plastics, which are an increasing concern among environmentalists [ 81 , 172 , 173 ].…”

Section: Environmental Applicationsmentioning

confidence: 99%

Marine Actinomycetes, New Sources of Biotechnological Products

et al. 2021

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The Actinomycetales order is one of great genetic and functional diversity, including diversity in the production of secondary metabolites which have uses in medical, environmental rehabilitation, and industrial applications. Secondary metabolites produced by actinomycete species are an abundant source of antibiotics, antitumor agents, anthelmintics, and antifungals. These actinomycete-derived medicines are in circulation as current treatments, but actinomycetes are also being explored as potential sources of new compounds to combat multidrug resistance in pathogenic bacteria. Actinomycetes as a potential to solve environmental concerns is another area of recent investigation, particularly their utility in the bioremediation of pesticides, toxic metals, radioactive wastes, and biofouling. Other applications include biofuels, detergents, and food preservatives/additives. Exploring other unique properties of actinomycetes will allow for a deeper understanding of this interesting taxonomic group. Combined with genetic engineering, microbial experimental evolution, and other enhancement techniques, it is reasonable to assume that the use of marine actinomycetes will continue to increase. Novel products will begin to be developed for diverse applied research purposes, including zymology and enology. This paper outlines the current knowledge of actinomycete usage in applied research, focusing on marine isolates and providing direction for future research.

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Actinobacteria consortium as an efficient biotechnological tool for mixed polluted soil reclamation: Experimental factorial design for bioremediation process optimization

Cited by 58 publications

References 40 publications

Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation

Gentle remediation options for soil with mixed chromium (VI) and lindane pollution: biostimulation, bioaugmentation, phytoremediation and vermiremediation

Fluorinated waste and firefighting activities: biodegradation of hydrocarbons from petrochemical refinery soil co-contaminated with halogenated foams

Marine Actinomycetes, New Sources of Biotechnological Products

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