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Showing 1 to 20 of 22 for “"Biostimulation"”.
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The effect of biostimulation on geochemical and microbiological conditions in an isolated dolostone fracture
A biostimulation field trial was conducted to determine the effect of nutrient addition on microbial populations in a fractured rock environment. The ultimate goal of this research is to induce bioclogging in rock fractures as a method of in situ containment and remediation of contaminated …
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Bioaugmentation and biostimulation of a South African coal-based Technosol as a mine rehabilitation strategy
… the improvement of Technosol fertility through biostimulation and bioaugmentation. By introducing a diverse microbial community, typically associated with healthy soils and initially absent in mine waste, the establishment of self-sustaining fertile topsoils to rehabilitate disturbed mining …
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BIOREMEDIATION DE SOLS POLLUES AUX HYDROCARBURES – AMELIORATION DE LA BIOREMEDIATION IN SITU DES HYDROCARBURES PAR BIO-AUGMENTATION AU MOYEN DE SOUCHES ENDOGENES ET EXOGENES
… and to verify its efficiency compared with biostimulation. The purpose is to simulate in situ bioremediation using experimental columns. It has been demonstrated that it’s possible to produce a biomass able to degrade hydrocarbons in a polluted soil in one month. The main way of hydrocarbon …
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Microcosms and field bioremediation studies of Perchloroethene (PCE) contaminated soil and groundwater
… at a former dry cleaning site in Manhattan, KS. Biostimulation experiments included combinations and concentrations of the following nutrients: soy oil methyl esters (SOME), yeast extract (YE), glucose, lactate, methanol and cheese whey. Bioaugmentation studies used KB-1 bacterial consortium …
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Evaluation of Enhanced Bioremediation for Reductive Dechlorination of Tetrachloroethene (PCE): Microcosm Study
… were conducted to assess the potential for biostimulation and bioaugmentation as source reduction measures in support of a monitored natural attenuation remedial strategy at Naval Amphibious Base (NAB) Little Creek. Previous work with laboratory microcosms conducted under simulated natural …
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The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination
… to a groundwater remediation setting at a biostimulation experiment at the former site of a uranium tailings pile in Rifle, Colorado. 238U/235U analysis of a bioremediation experiment finds a shift of ≈1.0‰ associated with a large (≈90%) decrease in dissolved uranium concentration. This …
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Expression of dsr messenger RNA by sulfate reducing bacteria with varying substrate and temperature
… used in laboratory experiments and field biostimulation projects, but largely absent in nature. Incubation temperatures of 18°C, 23°C, and 30°C were used to determine the effect of temperature on dsr expression. From reactors in which we fixed rates of sulfate reduction, we extracted …
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Physiological Characterization of Acetotrophic Anaerobic Respiration Using Anaeromyxobacter Dehalogenans as a Model Organism
… serves as an ideal candidate for studying both biostimulation and bioaugmentation remediation technologies. Findings of this research lay the groundwork for future studies of A. dehalogenans in the bioremediation of mixed contaminants and for obtaining a fundamental understanding of the …
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The study of rehabilation of hydrocarbon contaminated soil using bio-remedial microbes
… the importance of biodegradation. The effect of biostimulation of the indigenous soil microorganisms declined with time during the study.
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Investigating uranium mobility using groundwater 238U/235U data and a reactive transport model
… U stable isotope fractionation observed during biostimulation via acetate amendment. These simplified models have known inaccuracies and do not incorporate the complex hydrologic and geochemical aspects of the site. To more accurately interpret these measured U isotope ratios, we present a …
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Evaluation of the immobilized soil bioreactor for treatment of naphthenic acids in oil sands process waters
… Exploratory studies involving ozonation or biostimulation were conducted with the aim of increasing NA removal. Ozonation decreased NA concentration by 94% and total organic carbon (TOC) by 6%. Subsequent ISBR treatment removed ~30% of the remaining TOC. Addition of a NA surrogate increased …
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Bioremediation of chlorinated ethanes and ethenes in vertical flow engineered wetland systems
… dechlorination kinetics. Bioaugmentation and biostimulation amendments lead to higher dechlorination rates of both cis-1,2-DCE and 1,1-DCA. Studies conducted with different amounts of peat and sand mixtures to investigate long term effects of organic carbon depletion in engineered wetland …
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Investigating petroleum oil bioremediation strategies for crude oil contaminated mining sites in Mpumalanga, South Africa
… nutrient addition treatment, we recommended that biostimulation be considered as the in situ oil spill remediation strategy. And for the North and South bunkers crude oil, which responded less to treatments, probably due to its heavy nature, compared to the Alpha bunker crude oil, we suggested a …
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Characterization and comparison of microbial communities from different tourist ports in Mediterranean Sea and evaluation of applicability of bioremediation treatments
… and sediments. 4. Comparison of the effects of biostimulation treatment on bacterial communities in seawater at laboratory scale. 5. Comparison of the effect of bioaugmentation treatments on PAH degradation in sediments at laboratory scale. Three tourist ports located across the Mediterranean …
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REACTIVE TRANSPORT OF IRON AND HYDROCHAR COLLOIDS IN A HYDROCARBON-CONTAMINATED SUBSURFACE ENVIRONMENT
… to microorganisms that degrade the contaminants. Biostimulation is thus designed to increase nutrient bioavailability and to accelerate the biodegradation of the contaminants. Remedial amendments—either inorganic, organic, or both—are injected into the subsurface to increase nutrient …
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Tea (Camellia sinensis (L.) O. Kuntze) plant productivity and protection with microbial stimulants : A thesis submitted in partial fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… Hypocrea lixii provided the most significant biostimulation, than its exogenous anamorph; T. harzianum, which was tested representing the new taxonomic concept of H. lixii and T. harzianum as two individual species (previously classified as teleomorph and anamorph of the same species). This …
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Fate of 2,4,6-trinitrotoluene (TNT) in historically contaminated aquifer sediments
… study demonstrating biodegradation as well as biostimulation potential at FNOD.
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The Effect of Select Biological and Environmental Factors on the Horizontal Gene Transfer and Functionality of the TOL Plasmid: A Case Study for Genetic Bioaugmentation
… stimulate microbial degradation of contaminants (biostimulation) or microbes that have high degradation potentials (bioaugmentation). Although in situ bioremediation processes generally offer more advantages than ex situ methods, there are concerns with the current in situ methods that limit their …
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Assessment of Microbial Biodegradation of Mixed Soil Contaminants at the Santa Susan Field Laboratory Using TRFLP, qPCR, and Culturing
… attenuation conditions. Bioaugmentation and/or biostimulation methods should also be investigated in addition of natural attenuation. These microcosm experiments are currently underway in a companion study at Cal Poly by graduate student Mackenzie Billings.</p>
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