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Showing 1 to 20 of 243 for “"Bioremediation"”.
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Bioremediation of petroleum hydrocarbon contaminated soil
The bioremediation of petroleum contaminated soil in large-scale treatment units was studied in conjunction with Sybron Chemicals Inc., Salem, VA. The soil had been previously contaminated and was spiked with additional petroleum. Water with different characteristics was circulated through the soil …
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The Microbubble Assisted Bioremediation of Chlorinated Ethenes
This work focused on using a microbubble dispersion to deliver hydrogen and carbon dioxide to anaerobic consortia to stimulate their ability to reductively dehalogenate tetrachloroethylene all the way to ethene and ethane. A continuous flow system, consisting of six anaerobic soil column …
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Enhanced petroleum-contaminated soil bioremediation by plants
A petroleum-contaminated soil remediation study was conducted in a greenhouse. The system consisted of 36 pots, 12 were vegetated with squash, 12 were vegetated with fescue grass and the last 12 units served as unvegetated controls. For each group, three treatments were applied, 1) the addition of …
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Bioremediation of hexavalent chromium using gram-negative bacteria.
… are produced. The use of microbial cells as bioremediation of heavy metals is a potential alternative to conventional chemical methods.In this work, laboratory- scale experiments were performed to investigate Cr (VI) removal using five environmental Gram-negative bacterial strains, three of …
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Bioremediation of petroleum hydrocarbons using microbial fuel cells
… as an independent system in lieu of other bioremediation technologies (e.g. pump and treat, electrobioremediation or permeable reactive barriers) or integrated with existing infrastructure such as monitoring wells or piezometers.
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Bioremediation of waste by the bacterium Rhodopseudomonas palustris
… for the future development of R. palustris as a bioremediation system and cell-factory for sustainable biotechnology.
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Design of medical waste treatment systems employing bioremediation
The design and development of a system for disinfecting medical waste at the site of origin is presented. Investigation of the current commercial systems that accomplish this task shows that they all expose the waste to physical conditions that are harmful to all forms of life. Further, most are …
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Bioremediation of Phenolic Compounds in Circulating Packed Bed Bioreactor
… Compared to physicochemical methods, bioremediation is an attractive alternative for removal of phenolic compounds from contaminated waters. This research aimed to evaluate bioremediation of phenolic compounds in batch systems and in continuously operated circulating packed bed …
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A Study of Rhamnolipid Microbubble Dispersion for Bioremediation Applications
… effectiveness of the dispersion for improving bioremediation efficiency, with a specific focus on the use of microbubble dispersion as a carrier for contaminant-degrading bacteria within a bioremediation scenario. Microbubble dispersion is a suspension of a large number of minute spherical gas …
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Engineering of Aniline Dioxygenase for Bioremediation and Industrial Applications
Another round of saturation mutagenesis on active site residues with 1-K31 as parent followed by random mutagenesis yielded the mutant 3-R21. Whole cell activity of 3-R21 for AN, 24DMA and 2IPA were 27.7, 9.8, and 12 nmol/min/mg protein respectively. The activities of 3-R21 for AN, 24DMA and 2IPA …
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Bioremediation of Pcb Contaminated Surface Soil: A Microcosm Study
This feasibility study was performed at Virginia Polytechnic Institute and State University (Blacksburg, VA) in collaboration with BioSystems Technology, Inc. (Blacksburg, VA). In this study, degradability of PCBs (Aroclor 1242) from an aged surface soil was evaluated using serum bottle microcosms …
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Assessment of Intrinsic Bioremediation at a PCE Contaminated Site
Groundwater parameter analysis, microcosm experiments, and microcosms modeling were undertaken to assess the potential of Monitored Natural Attenuation as a remediation strategy at Site 12 at the Naval Amphibious Base (NAB) Little Creek. Site 12 was contaminated with PCE waste disposed by a former …
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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
… 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 elimination in the soil is biodegradation and the …
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Molecular genetics and microbiology of bioremediation using methane-oxidising bacteria
Methanotrophic bacteria can grow on methane as their sole source of carbon and energy. Methylosinus trichosporium OB3b is a Gram negative, methanotrophic bacterium, which can convert methane to methanol by either particulate (pMMO) or soluble (sMMO) methane monooxygenase. The sMMO comprises three …
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Bioremediation of biodiesel and diesel contaminated soil by pseudomonas putida
… of three days starting from Day 0 to Day 24 of bioremediation period. Results showed that the highest removal of total nitrogen (TN), orthophosphate, sulfate, total organic carbon (TOC) and PAHs were observed in the sample B100 with up to 70.43%, 69.47%, 68.08%, 97.66% and 96.28% removal, …
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Electrokinetic bioremediation technique on contaminated landfill soil by pseudomonas putida
… By combining with other techniques such as Bioremediation would likely increase the effectiveness of the EK-R technique. The objective of this research is to investigate the ability of Electrokinetic Bioremediation (EK-Bio) technique to remove Hg, Cu, Zn, As, Pb, nitrate and sulphate from …
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A statistical approach to assess the efficiency of bioremediation methods
… reduction over the control before approving the bioremediation method. Typically, samples of PAH concentrations are collected from an experiment involving the bio-treatment and the control conditions. The percent reduction is calculated by the formula: {dollar}\rm{\=x\sb1-\=x\sb2\over …
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Bioremediation of ethanol in air using a gas-fluidized bioreactor
… packing materials were investigated. Then, bioremediation was tested using two types of packing in a fluidized bioreactor, as well as in a comparable packed bed. Microorganisms on the particles biodegrade contaminants in the polluted air, which flows up through the bed. At high flowrates, …
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An investigation into the bioremediation of black olive brine wastewater
… This thesis describes an investigation into the bioremediation of black olive fermentation wastewaters. Wastewaters, from both the table olive and olive oil industries, are toxic and this toxicity can be attributed to the phenolic compounds present. These compounds are known to have antimicrobial …
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