Petroleum refinery wastes contain mixtures of toxic compounds including Polycyclic Aromatic Hydrocarbons (PAH) which may pose genotoxic threats to the biota. The objective present study was assess potential wastewaters petroleum at Sapugaskanda, Sri Lanka using erythrocytic micronuclei and nuclear abnormalities as biomarkers in fish Oreochromis niloticus exposed wastewater under controlled labo...

Zeolites are nanoporous crystalline alumino-silicates with a rich variety of interesting properties and industrial applications. With over 140 zeolite framework topologies synthetically available—each with its own range of compositions—zeolites offer size-, shapeand electrostaticallyselective adsorption, diffusion and reaction up to remarkably high temperatures. Zeolites are widely used as petr...

Stereospecific analysis is an important tool for the characterization of lipid fraction of food products. In the present research, an approach to characterize arabica and robusta varieties by structural analysis of the triacylglycerol (TAG) fraction is reported. The lipids were Soxhlet extracted from ground roasted coffee beans with petroleum ether, and the fatty acids (FA) were determined as t...

Understanding the fate and transport mechanism of petroleum hydrocarbons (PHC) in groundwater is critical after their spill is critical towards complete removal of contaminants from the aquifer. Even though the effective solubilities of benzene, toluene, ethylbenzene and xylene (BTEX) compounds in the mixture are lower than their pure phase aqueous solubilities, they can persist in the aquifer ...

Acknowledgment. Support from King Fahd University of Petroleum and Minerals is gratefully acknowledged. We especially thank Prof. M. Hauser from Stuttgart University for donating HOPTS and for very helpful discussions. We are grateful to Prof. H. Yamani for his continuous support and encouragement. We are also thankful to Prof. M. El-Sayed for very fruitful discussions. been applied to our resu...

Humans are exposed to mixtures of chemicals, rather than to individual chemicals. From a public health point of view, it is most relevant to answer the question of whether or not the components in a mixture interact in a way that results in an increase in their overall effect compared with the sum of the effects of the individual components. In this article, options for the hazard identificatio...

We use the bosonization approach to investigate quantum phases of boson-fermion mixtures (BFM) of atoms confined to one dimension by an anisotropic optical lattice. For a BFM with a single species of fermions we find a charge-density wave phase, a fermion pairing phase, and a phase separation regime. We also obtain the rich phase diagram of a BFM with two species of fermions. We demonstrate tha...

X-Ray absorption spectromicroscopy provides rich information on the chemical organization of materials down to the nanoscale. However, interpretation of this information in studies of "natural" materials such as biological or environmental science specimens can be complicated by the complex mixtures of spectroscopically complicated materials present. We describe here the shortcomings that somet...

Abstract Polyhydroxyalkanoates (PHAs) production from lignocellulosic biomass using mixed microbial cultures (MMC) is a potential cheap alternative for reducing the use of petroleum-based plastics. In this study, an MMC adapted to acidogenic effluent dark fermentation (DF) exhausted sugar beet cossettes (ESBC) has been tested in order determine its capability produce PHAs nine different synthet...

List of Abbreviations CIIAPTER ONE General Introduction Pollution of Saudi Arabian soil with crude oil Chemistry and biodegradability of petroleum hydrocarbon Environmental fate of petroleum Factors influencing petroleum hydrocarbon biodegradation Distribution of petroleum-utilizing microorganisms in the environment Biological degradation of petroleum hydrocarbon Bacterial degradation of oil Fu...