As a means to study the fate of polycyclic aromatic hydrocarbons (PAHs) in freshwater sediments, pyrene mineralization was examined in microcosms spiked with [14C]pyrene. Some microcosms were planted with reeds (Phragmites australis) and/or inoculated with a pyrene-degrading strain, Mycobacterium sp. 6PY1. Mineralization rates recorded over a 61 d period showed that reeds promoted a significant...

Rates of hydrocarbon biodegradation were estimated by following oxygen uptake during mineral oil oxidation or oxidation of [1-14C]hexadecane to 14CO2, when these substrates were added to natural water samples from Wisconsin lakes. A lag phase preceded hydrocarbon oxidation, the length of which depended on population density or on factors influencing growth rate and on the presence of nonhydroca...

Phenol is a man-made as well as a naturally occurring aromatic compound and an important intermediate in the biodegradation of natural and industrial aromatic compounds. Whereas many microorganisms that are capable of aerobic phenol degradation have been isolated, only a few phenol-degrading anaerobic organisms have been described to date. In this study, three novel nitrate-reducing microorgani...

The enrichment of styrene degrading microorganisms from biofilters resulted in a broad range of degrading isolates with unkown in situ relevance. For this reason an in situ labeling of styrene degrading microorganisms using deuterated styrene and phospholipid fatty acids as biomarkers prior to the isolation approach was performed. By this method the fatty acid profiles of the primary styrene de...

Lignocellulosic wastes are abundant, renewable and inexpensive sources of energy. This wastes contains large amount of residual plant biomass which is non edible material obtained from plant cell walls. Biomass could be obtained from crop, domestic liquid fuel, municipal solid waste and agricultural residuals. In nature, cellulose, hemicellulose and lignin are major component of plant biomass t...

The prospection of bacteria that are resistant to polyaromatic hydrocarbons (PAH) activated sludge from a Petrochemical Wastewater Treatment Plant (WWTP) allows investigating potential biodegraders PAH. For this purpose, samples were cultured with benzo(a)pyrene and/or naphthalene as carbon sources. recovered isolates characterized by biochemical methods and identified based on the analysis seq...

We examined the role of microorganisms in the degradation of the organophosphate insecticide chlorpyrifos in soils from the United Kingdom and Australia. The kinetics of degradation in five United Kingdom soils varying in pH from 4.7 to 8.4 suggested that dissipation of chlorpyrifos was mediated by the cometabolic activities of the soil microorganisms. Repeated application of chlorpyrifos to th...

Due to plastics resilience against degradation and its proliferation in. An extremely halotolerant bacterial consortium MPD-M, immobilized.The hypothesis is that if PE-degrading microorganisms do exist in the Nature, then it will be possible to isolate them and use them for degradation of plastic bags. A microbial consortium capable of PE degradation was obtained as a result of.Selection and sc...