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in subjects: "Bioremediation"  
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Versatile microbial surface-display for environmental remediation and biofuels production

Description: Surface display is a powerful technique that utilizes natural microbial functional components to express proteins or peptides on the cell exterior. Since the reporting of the first surface-display system in the mid-1980s, a variety of new systems have been reported for yeast, Gram-positive and Gram-negative bacteria. Non-conventional display methods are emerging, eliminating the generation of genetically modified microorganisms. Cells with surface display are used as biocatalysts, biosorbents a… more
Date: February 14, 2008
Creator: Wu, Cindy H.; Mulchandani, Ashok & Chen, wilfred
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microbial transformations of uranium in wastes and implication on its mobility

Description: Uranium exists in several chemical forms in mining and mill tailings and in nuclear and weapons production wastes. Under appropriate conditions, microorganisms can affect the stability and mobility of U in wastes by altering the chemical speciation, solubility and sorption properties and thus could increase or decrease the concentrations of U in solution and the bioavailability. Dissolution or immobilization of U is brought about by direct enzymatic action or indirect nonenzymatic action of mic… more
Date: September 14, 2008
Creator: Suzuki, Y.; Nankawa, T.; Ozaki, T.; Ohnuki, T.; Francis, A. J.; Enokida, Y. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Integrated genome-based studies of Shewanella ecophysiology

Description: This project was a component of the Shewanella Federation and, as such, contributed to the overall goal of applying the genomic tools to better understand eco-physiology and speciation of respiratory-versatile members of Shewanella genus. Our role at Boston University was to perform bioreactor and high throughput gene expression microarrays, and combine dynamic flux balance modeling with experimentally obtained transcriptional and gene expression datasets from different growth conditions. In th… more
Date: February 14, 2012
Creator: Daniel, Segre & Qasim, Beg
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final Report: Role of microbial synergies in immobilization of metals

Description: This Subsurface Microbial Ecology and Community Dynamics project tested the following hypothesis: synergistic groups of microorganisms immobilize heavy elements more efficiently than do individual species. We focused on groundwater at several DOE FRC and their microbial communities affecting the fate of U, Tc, and Cr. While we did not obtain evidence to support the original hypothesis, we developed a platform to accessing novel species from the target environments. We implemented this technolog… more
Date: November 14, 2012
Creator: Slava Epstein, Ph.D. and Kim Lewis, Ph.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Remedial Design/Remedial Action Work Plan for Operable Units 6-05 and 10-04, Phase IV

Description: This Phase IV Remedial Design/Remedial Action Work Plan addresses the remediation of areas with the potential for UXO at the Idaho National Laboratory. These areas include portions of the Naval Proving Ground, the Arco High-Altitude Bombing Range, and the Twin Buttes Bombing Range. Five areas within the Naval Proving Ground that are known to contain UXO include the Naval Ordnance Disposal Area, the Mass Detonation Area, the Experimental Field Station, The Rail Car Explosion Area, and the Land M… more
Date: November 14, 2006
Creator: Wells, R. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Involvement of Linear Plasmids in Aerobic Biodegradation of Vinyl Chloride

Description: Pseudomonas putida strain AJ and Ochrobactrum strain TD were isolated from hazardous waste sites based on their ability to use vinyl chloride (VC) as a sole source of carbon and energy under aerobic conditions. Strains AJ and TD also use ethene and ethylene oxide as growth substrates. Strain AJ contained a linear megaplasmid (approximately 260 kb) when grown on VC or ethene, but no circular plasmids. While growing on ethylene oxide, the size of the linear plasmid in strain AJ decreased to appro… more
Date: June 14, 2004
Creator: BRIGMON, ROBINL.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Integrated Field, Laboratory, and Modeling Studies to Determine the Effects of Linked Microbial and Physical Spatial Heterogeneity on Engineered Vadose Zone Bioremediation

Description: While numerous techniques exist for remediation of contaminant plumes in groundwater or near the soil surface, remediation methods in the deep vadose zone are less established due to complex transport dynamics and sparse microbial populations. Yet pollution in the vadose zone poses a serious threat to the groundwater resources lying deeper in the sediment. While the contaminant may be slowly degraded by native microbial communities; microbial degradation rates rarely keep pace with the spread o… more
Date: September 14, 2003
Creator: Brockman, Fred & Selker, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Techniques for assessing the performance of in situ bioreduction and immobilization of metals and radionuclides in contaminated subsurface environments

Description: Department of Energy (DOE) facilities within the weapons complex face a daunting challenge of remediating huge below inventories of legacy radioactive and toxic metal waste. More often than not, the scope of the problem is massive, particularly in the high recharge, humid regions east of the Mississippi river, where the off-site migration of contaminants continues to plague soil water, groundwater, and surface water sources. As of 2002, contaminated sites are closing rapidly and many remediatio… more
Date: November 14, 2004
Creator: Jardine, P. M.; Watson, D. B.; Blake, D. A.; Beard, L. P.; Brooks, S. C.; Carley, J. M. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microbially Mediated Immobilization of Contaminants Through In Situ Biostimulation: Scale up of EMSP Project 55267

Description: The overall goal of the proposed research is to provide an improved understanding and predictive capability of the mechanisms that allow metal-reducing bacteria to be effective in the bioremediation of redox sensitive toxic metals and radionuclides. The study is motivated by the likelihood that subsurface metal-reducing bacteria can be stimulated to effectively alter the redox state of contaminants so that they are immobilized in situ for long time periods. The work described in this proposal w… more
Date: June 14, 2001
Creator: Jardine, Philip M. & Fendorf, Scott E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NABIR Assessment Element, Expanded Rapid, Comprehensive, Lipid Biomarker Analysis for Subsurface, Community Composition and Nutritional/Physiological Status as Monitors of Remediation and Detoxification Effectiveness

Description: NABIR funding at the University of Tennessee Center for Biomarker Analysis (CBA) has led to several key contributions to the investigation of bioremediation of metals and radionuclides. This lab has played an integral part in assessing microbial communities at the field scale at the ORNL FRC (Istok et al., 2004) and two UMTRA sites (Anderson et al., 2003, Chang et al., 2001). Our work over the period of the grant has resulted in 42-peer reviewed publications, 62 presentations (14 of which were … more
Date: September 14, 2005
Creator: White, David C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Trace Metal Bioremediation: Assessment of Model Components from Laboratory and Field Studies to Identify Critical Variables

Description: The objective of this project was to gain an insight into the modeling support needed for the understanding, design, and operation of trace metal/radionuclide bioremediation. To achieve this objective, a workshop was convened to discuss the elements such a model should contain. A ''protomodel'' was developed, based on the recommendations of the workshop, and was used to perform sensitivity analysis as well as some preliminary simulations in support for bioremediation test experiments at UMTRA s… more
Date: February 14, 2003
Creator: Jaffe, Peter & Rabitz, Herschel
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biological Treatment of Petroleum in Radiologically Contaminated Soil

Description: This chapter describes ex situ bioremediation of the petroleum portion of radiologically co-contaminated soils using microorganisms isolated from a waste site and innovative bioreactor technology. Microorganisms first isolated and screened in the laboratory for bioremediation of petroleum were eventually used to treat soils in a bioreactor. The bioreactor treated soils contaminated with over 20,000 mg/kg total petroleum hydrocarbon and reduced the levels to less than 100 mg/kg in 22 months. Aft… more
Date: November 14, 2005
Creator: BERRY, CHRISTOPHER
Item Type: Refine your search to only Book
Partner: UNT Libraries Government Documents Department
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