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Relevant bibliographies by topics / Hazardous wastes Biodegradation / Dissertations / Theses

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Dissertations / Theses on the topic 'Hazardous wastes Biodegradation'

Author: Grafiati

Published: 4 June 2021

Last updated: 28 January 2023

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1

Booker, Randall Sulter Jr. "Microbial reductive dechlorination of hexachloro-1,3-butadiene." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20921.

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2

Husserl, Johana. "Biodegradation of nitroglycerin as a growth substrate: a basis for natural attenuation and bioremediation." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42708.

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Nitroglycerin (NG) is a toxic explosive commonly found in soil and contaminated groundwater at old manufacturing plants and military ranges. When NG enters an aquifer, it behaves as a dense non-aqueous phase liquid (DNAPL). Nitroglycerin is an impact sensitive explosive and therefore excavating the area to remove or treat the contaminant can be dangerous. In situ bioremediation and natural attenuation of NG have been proposed as remediation alternatives and it is therefore necessary to understand the degradation mechanisms of NG in contaminated soil and groundwater and investigate the potentia

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3

Kantachote, Duangporn. "The use of microbial inoculants to enhance DDT degradation in contaminated soil." Title page, contents and abstract only, 2001. http://web4.library.adelaide.edu.au/theses/09PH/09phk165.pdf.

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4

Jouen, Thomas. "Caractérisation de l'évolution de l'état de biodégradation des massifs de déchets non dangereux en post-exploitation : Application de méthodes géophysiques." Thesis, Paris, Institut agronomique, vétérinaire et forestier de France, 2018. http://www.theses.fr/2018IAVF0010/document.

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Le stockage est la méthode de traitement des déchets non dangereux la plus communément utilisée dans le monde entier car elle est un moyen simple et économique pour leur élimination. Malgré une volonté nationale et européenne pour réduire le stockage de déchets biodégradables, une quantité non négligeable est encore enfouie entrainant la mise en place de modes de gestion spécifique. Autrefois exploitées comme de simples fosses de remplissage, les installations de stockage de déchets non dangereux (ISDND) sont aujourd’hui des ouvrages complexes dont l’objectif est de réduire l’impact environnem

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5

Staub, Matthias. "Approche multi-échelle du comportement bio-mécanique d'un déchet non dangereux." Grenoble, 2010. http://www.theses.fr/2010GRENU025.

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Cette thèse porte sur une étude de l'évolution biomécanique de déchets non dangereux selon différentes conditions de prétraitement et d'opération à différentes échelles. Après une introduction aux enjeux et aux données majeures concernant la gestion des déchets, leur stockage et les évolutions en cours (Chapitre I), la caractérisation du milieu déchet est abordée (Chapitre II). Ce milieu, triphasique et donc généralement non saturé en eau, nécessite une étude et des moyens d'investigation particuliers. De nombreuses études antérieures ont démontré la nécessité d'études couplées dédiées aux déc

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6

Lee, Taejin. "In vitro anaerobic trinitrotoluene (TNT) degradation with rumen fluid and an isolate, G.8." Thesis, 1994. http://hdl.handle.net/1957/35511.

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7

Keeling, Matthew Thomas. "Bench-scale study for the bioremediation of chlorinated ethylenes at Point Mugu Naval Air Weapons Station, Point Mugu California, IRP Site 24." Thesis, 1998. http://hdl.handle.net/1957/33320.

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Laboratory scale microcosm studies were conducted using site specific groundwater and aquifer solids to assess the feasibility of stimulating indigenous microorganisms in-situ to biologically transform Trichloroethylene (TCE) and its lesser chlorinated daughter products dichloroethylene (DCE) and vinyl chloride (VC). Three different treatments were conducted to determine the best approach for biologically remediating TCE under site specific conditions: anaerobic reductive dechlorination, aerobic cometabolism and sequential anaerobic/aerobic stimulation. Studies were conducted in batch serum bo

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8

Chang, Soon Woong. "Cometabolic degradation of polycyclic aromatic hydrocarbons (PAHs) and aromatic ethers by phenol- and ammonia-oxidizing bacteria." Thesis, 1997. http://hdl.handle.net/1957/33803.

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Cometabolic biodegradation processes are potentially useful for the bioremediation of hazardous waste sites. In this study the potential application of phenol-oxidizing and nitrifying bacteria as "priming biocatalysts" was examined in the degradation of polycyclic aromatic hydrocarbons (PAHs), aryl ethers, and aromatic ethers. We observed that a phenol-oxidizing Pseudomonas strain cometabolically degrades a range of 2- and 3-ringed PAHs. A sequencing batch reactor (SBR) was used to overcome the competitive effects between two substrates and the SBR was evaluated as a alternative technology to

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9

Cole, Jason David. "Pentacholorophenol reductive dechlorination and the significance of temperature : development of an interceptor trench technology." Thesis, 1993. http://hdl.handle.net/1957/36108.

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10

Snyman, Heidi Gertruida. "The microbiology of ex situ bioremediation of petroleum hydrocarbon-contaminated soil." Thesis, 1996. http://hdl.handle.net/10413/9152.

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Bioremediation is the process whereby the degradation of organic polluting compounds occurs as a result of biochemical activity of macro- and microorganisms. Bioremediation of hydrocarbon contaminated soils can be practised in situ or ex situ by either stimulating the indigenous microorganisms (biostimulation) or introducing adapted microorganisms which specifically degrade a contaminant (bioaugmentation). This investigation focused on ex situ remediation processes with special attention to the processes and microbiology of landfarming and thermal bioventing. Landfarming was investigated at pi

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11

Morgan, Gary Duwayne. "Determining the capability of a vegetation cover to limit effluent leaching from a waste impoundment." Thesis, 2009. http://hdl.handle.net/10413/4959.

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A final cover on a waste impoundment is the main physical barrier between the waste impoundment and the environment designed to protect against physical, chemical and biological factors isolating the waste from the atmospheric environment. Since the early 1990‟s regulators in the United States have started accepting vegetation covers in lieu of the prescriptive covers. Currently in South Africa, data that provide field performance comparisons of alternative vegetation covers are few or non-existent; hence a research program was undertaken by an industrial corporation in South Africa to determi

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12

Kantachote, Duangporn. "The use of microbial inoculants to enhance DDT degradation in contaminated soil / Duangporn Kantachote." Thesis, 2001. http://hdl.handle.net/2440/21703.

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13

Mustapha, Shubnum. "Microbial degradation of polychlorinated biphenyls." Thesis, 2007. http://hdl.handle.net/10321/136.

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Thesis (M.Tech.: Biotechnology)-Dept. of Biotechnology, Durban University of Technology, 2007 xxi, 117 leaves<br>The aromatic compounds Polychlorinated Biphenyls (PCBs) are one of the largest groups of environmental pollutants. The greatest concern is the release of PCBs in the water systems by industrial effluent, accidental spillages or leaks. PCBs are able to bioaccumulate in the fatty tissues of animals, fish and humans. The impact on human health due to PCBs has prompted interest in their degradation. The application of microbial degradation of PCBs can transform many PCB metabolites

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14

Teclu, Daniel Ghebreyo. "Bioremediation of arsenic contaminated groundwater." Thesis, 2008. http://hdl.handle.net/10413/342.

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Sulphate-reducing bacteria (SRB) mediate the reduction of metals/metalloids directly or indirectly. Bioremediation of arsenic contaminated water could be a cost-effective process provided a cheap carbon source is used. To this end, molasses was tested as a possible source of carbon for the growth of sulphate-reducing bacteria (SRB). Its chemical composition and the tolerance of SRB toward different arsenic species [As (III) and As (V)] were also investigated. Batch culture studies were carried out to assess 1, 2.5 and 5 g l-1 molasses as suitable concentrations for SRB growth. The results indi

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15

Beukes, Lorika Selomi. "The microbiological assessment of a biofiltration system in KwaZulu-Natal (South Africa) treating borehole water containing Mn (II) and Fe (II)." Thesis, 2013. http://hdl.handle.net/10413/9697.

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In the following study, the potential role that microorganisms play in the removal of Mn (II) and Fe (II) was assessed using biofilter sand and water samples collected from a biofiltration system (operated by Umgeni Water in KwaZulu-Natal, Nottingham Road, at the Nottingham combined school, South Africa) treating borehole water containing manganese and iron. Initially the presence of Mn (II) and Fe (II) oxidizing bacteria was demonstrated in the biofiltration system. Thereafter, the contribution of individual microorganisms to the overall removal of manganese and iron was assessed in the labor

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16

Vaughan, Halina. "Design, optimisation and costing of a novel forced-upflow bioreactor for bioremediation of leachates from selected landfill sites in KwaZulu-Natal." Thesis, 2011. http://hdl.handle.net/10413/8604.

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Most waste generated in South Africa is sent to landfills for disposal, and although it is confined in specific areas, it can potentially affect both above and below ground water resources, impacting environmental and public health. This is particularly relevant in a country where water supplies are limited and groundwater resources are prone to pollution. The primary objective of this study was to assess the performance of an upflow packed-bed bioreactor purposedesigned for the treatment of leachates produced by landfills in the Durban Metropolitan Area (DMA). The effect of parameters such as

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17

Desta, Tsegazeab Goje. "Humic acid pretreatment for enhancing microbial removal of metals from a synthetic 'wastewater'." Thesis, 2004. http://hdl.handle.net/10413/3576.

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The presence of heavy metal ions in waste streams is one of the most pervasive environmental issues of present times. A rotating biological contactor (RBC) was used to investigate the potential capacity of microbial biofilms in remediation of the metal ion species from a mixed metal contaminated effluent solution containing Cr+3 , Pb+2 and Cu+2 , each at a concentration of 200 mg r1 • In the first part of this study the effectiveness of various support materials for the development of microbial biofilms capable of removing heavy metals from a synthetic effluent was investigated. EDX analysis s

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18

LEE, MICHAEL DONALD. "BIODEGRADATION OF ORGANIC CONTAMINANTS IN THE SUBSURFACE OF HAZARDOUS WASTE SITES (GROUNDWATER, MICROBIOLOGY, AQUIFER)." Thesis, 1986. http://hdl.handle.net/1911/15991.

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The ability of the subsurface microbial population to degrade the major organic contaminants at three sites was assessed. The three sites included an abandoned wood creosoting facility in Conroe, Texas where the silty sand aquifer was contaminated primarily with polynuclear aromatic hydrocarbons; a sandy aquifer in Traverse City, Michigan where a spill of jet fuel polluted the ground water with benzene, toluene, and xylenes; and a site on the Texas Gulf Coast in which the fine sand aquifer was contaminated with benzene, toluene, naphthalene, and bis(2-chloroethyl) ether. Representative subsurf

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19

Jitnuyanont, Pardi. "Comparison of indigenous and bioaugmented butane and propane-utilizers for transforming 1,1,1-trichloroethane in Moffett Field microcosms." Thesis, 1997. http://hdl.handle.net/1957/33964.

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20

Kim, Young. "Aerobic cometabolism of chloroform by butane and propane grown microorganisms from the Hanford subsurface." Thesis, 1996. http://hdl.handle.net/1957/34216.

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Batch microcosm studies were carried out to screen for microorganisms from the subsurface of Hanford DOE site that could cometabolically transform chloroform (CF) under aerobic conditions. The potential need for CF bioremediation at the Hanford site has resulted from the large release of carbon tetrachloride (CT) to the subsurface, of which a fraction anaerobically transformed to CF. Potential cometabolic substrates were screened for their ability to promote aerobic cometabolism of CF. The potential cometabolic substrates tested were isoprene, propene, octane, ammonia, methane, propane, and bu

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