Appropriate technology for soil remediation in tropical low-income countries - a pilot scale test of three different amendments for accelerated biodegradation of diesel fuel in Ultisol

Haller, Henrik; Jönsson, Anders; Ljunggren, Joel; Hedenström, Erik

doi:10.1080/23311843.2020.1754107

Cited by 5 publications

(4 citation statements)

References 46 publications

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“…In addition, the current work demonstrated that hydrocarbon-degrading bacteria also isolated from non-hydrocarboncontaminated sites such as soda lake (Chitu). In agreement with this, studies also showed that several hundred strains of hydrocarbon-degrading bacteria have also been isolated from the environments with no known hydrocarbon contamination [20,48] This could be due to the existence of hydrocarbons from natural and anthropological origin or produced by the degradation and synthesis processes of some microorganisms [3,17] and such natural environments are expected to contain highly reduced forms of hydrocarbon that are important to support microbial communities as good sources of carbon and energy [3,9,16,32].…”

Section: Discussionmentioning

confidence: 75%

“…Biostimulation, however, engages the amendment of macro-and micronutrients, sustains physical parameters (pH, temperature and aeration) and supplies surface-active substances (surfactants) in contaminated sites to optimize soil conditions and enhance biodegradation by increasing the growth rate of inhabitant hydrocarbon-degrading microorganisms [16,24,29,34,36,38,44]. This technique can be applied in situ and ex situ [27] to enhance biodegradation by increasing the bioavailability of the pollutants and the growth rate of inhabitant (indigenous, autochthonous) hydrocarbon-degrading microorganisms [1].…”

Section: Introductionmentioning

confidence: 99%

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Isolation and characterization of diesel-degrading bacteria from hydrocarbon-contaminated sites, flower farms and soda lakes

Bekele¹,

Bogale²,

Fida³

et al. 2020

Preprint

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Background: Hydrocarbon-derived pollutants are becoming one of the most concerning ecological issues. Thus, there is a need to investigate and develop innovative, low-cost, eco-friendly, and fast techniques to reduce and/or eliminate pollutants using biological agents. The current study is conducted to isolate, characterize, and identify potential diesel-degrading bacteria.Results: Samples were collected from flower farms, lakeshores, old aged garages, asphalt, and bitumen soils and spread on selective medium (Bushnell Hass Mineral Salts Agar) containing diesel as the growth substrate. The isolates were characterized based on their growth patterns using OD measurement, biochemical testing and gravimetric analysis and identified using the Biolog database, and 16S rRNA gene sequencing techniques. Subsequently, six diesel degraders were identified and belong to Pseudomonas , Providencia , Roseomonas , Stenotrophomonas , Achromobacter , and Bacillus . Among these, based on gravimetric analysis, the three potent isolates AAUW23, AAUG11 and AAUG36 achieved 84%, 83.4%, and 83% diesel degradation efficiency, respectively, in 15 days. Consequently, the partial 16S rRNA gene sequences revealed that the two most potent bacterial strains (AAUW23 and AAUG11) were Pseudomonas aeruginosa , while AAUG36 was Bacillus subtilis . Conclusion: This study demonstrated that bacterial species isolated from hydrocarbon-contaminated and/or uncontaminated environments could be optimized to be used as potential bioremediation agents for diesel removal.

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Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Isolation and characterization of diesel-degrading bacteria from hydrocarbon-contaminated sites, flower farms and soda lakes

Bekele¹,

Bogale²,

Fida³

et al. 2020

Preprint

View full text Add to dashboard Cite

show abstract

“…In agreement with this, studies also showed that several strains of hydrocarbon-degrading bacteria have also been isolated from an environment with no known hydrocarbon contamination [34,50]. is could be due to the existence of hydrocarbons from natural and anthropological origin or produced by the degradation and synthesis processes of some microorganisms [51,52], and such natural environments are expected to contain highly reduced forms of hydrocarbon that are important to support microbial communities as good sources of carbon and energy [14,29,36,51].…”

Section: Discussionmentioning

confidence: 78%

“…Bioaugmentation involves an introduction of selected hydrocarbon-degrading microbial strains or consortia to the polluted environment to boost the already existing potential microbial communities for the biodegradation process [11,18,22,23,28]. Biostimulation, however, engages the amendment of macro-and micronutrients, sustains physical parameters (pH, temperature, and aeration), and supplies surface-active substances (surfactants) in contaminated sites to optimize soil conditions and enhance biodegradation by increasing the growth rate of indigenous (naturally occurring) hydrocarbon-degrading microorganisms [4,6,11,17,18,22,29]. is technique can be applied in situ and ex situ [28] to enhance biodegradation by increasing the bioavailability of the pollutants and the growth rate of native (indigenous and autochthonous) hydrocarbon-degrading microorganisms [23].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Diesel-Degrading Bacteria from Hydrocarbon-Contaminated Sites, Flower Farms, and Soda Lakes

Bekele

Gebrie

Mekonnen

et al. 2022

International Journal of Microbiology

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Hydrocarbon-derived pollutants are becoming one of the most concerning ecological issues. Thus, there is a need to investigate and develop innovative, low-cost, eco-friendly, and fast techniques to reduce and/or eliminate pollutants using biological agents. The study was conducted to isolate, characterize, and identify potential diesel-degrading bacteria. Samples were collected from flower farms, lakeshores, old aged garages, asphalt, and bitumen soils and spread on selective medium (Bushnell Haas mineral salt agar) containing diesel as the growth substrate. The isolates were characterized based on their growth patterns using optical density measurement, biochemical tests, and gravimetric analysis and identified using the Biolog database and 16S rRNA gene sequencing techniques. Subsequently, six diesel degraders were identified and belong to Pseudomonas, Providencia, Roseomonas, Stenotrophomonas, Achromobacter, and Bacillus. Among these, based on gravimetric analysis, the three potent isolates AAUW23, AAUG11, and AAUG36 achieved 84%, 83.4%, and 83% diesel degradation efficiency, respectively, in 15 days. Consequently, the partial 16S rRNA gene sequences revealed that the two most potent bacterial strains (AAUW23 and AAUG11) were Pseudomonas aeruginosa, while AAUG36 was Bacillus subtilis. This study demonstrated that bacterial species isolated from hydrocarbon-contaminated and/or uncontaminated environments could be optimized to be used as potential bioremediation agents for diesel removal.

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Polluted lignocellulose-bearing sediments as a resource for marketable goods—a review of potential technologies for biochemical and thermochemical processing and remediation

Haller

Paladino

Dupaul

et al. 2021

Clean Techn Environ Policy

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Lignocellulose-bearing sediments are legacies of the previously unregulated wastewater discharge from the pulp and paper industry, causing large quantities of toxic organic waste on the Baltic Sea floor and on the bottom of rivers and lakes. Several km2 are covered with deposits of lignocellulosic residues, typically heavily contaminated with complex mixtures of organic and inorganic pollutants, posing a serious threat to human and ecological health. The high toxicity and the large volume of the polluted material are challenges for remediation endeavours. The lignocellulosic material is also a considerable bioresource with a high energy density, and due to its quantity, it could appeal to commercialization as feedstock for various marketable goods. This study sets out to explore the potential of using this polluted material as a resource for industrial production at the same time as it is detoxified. Information about modern production methods for lignocellulosic material that can be adapted to a polluted feedstock is reviewed. Biochemical methods such as composting, anaerobic digestion, as well as, thermochemical methods, for instance, HTC, HTL, pyrolysis, gasification and torrefaction have been assessed. Potential products from lignocellulose-bearing sediment material include biochar, liquid and gaseous biofuels, growing substrate. The use of a contaminated feedstock may make the process more expensive, but the suggested methods should be seen as an alternative to remediation methods that only involve costs. Several experiments were highlighted that support the conception that combined remediation and generation of marketable goods may be an appropriate way to address polluted lignocellulose-bearing sediments. Graphic abstract

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Appropriate technology for soil remediation in tropical low-income countries - a pilot scale test of three different amendments for accelerated biodegradation of diesel fuel in Ultisol

Abstract: Hedenström | (2020) Appropriate technology for soil remediation in tropical low-income countries -a pilot scale test of three different amendments for accelerated biodegradation of diesel fuel in Ultisol, Cogent

Cited by 5 publications

References 46 publications

Isolation and characterization of diesel-degrading bacteria from hydrocarbon-contaminated sites, flower farms and soda lakes

Isolation and characterization of diesel-degrading bacteria from hydrocarbon-contaminated sites, flower farms and soda lakes

Isolation and Characterization of Diesel-Degrading Bacteria from Hydrocarbon-Contaminated Sites, Flower Farms, and Soda Lakes

Polluted lignocellulose-bearing sediments as a resource for marketable goods—a review of potential technologies for biochemical and thermochemical processing and remediation

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