We studied the physical, chemical, and microbiological factors that influence drinking water quality processed from River Tigris, and of the three main drinking water purification stations located at different parts of Tigris River, along with evaluation of drinking water of Al-Shula region in Baghdad city. Water samples were taken monthly from December 2009 to September 2010. Physical and chem...

montmorillonite is the major mineral of bentonite with many applications in industrial fields but some impurities decreases the quality of the bentonite. the main objective of this study was to investigate the suitable method for purification of ghaen mine bentonite. a combination of methods was considered including wet sieving and sedimentation, centrifuge and ultrasound. the efficiency of pur...

Bioenergy is a type of renewable energy made from biological sources including algae, trees, or waste from agriculture, wood processing, food materials, and municipalities. Currently, the uses of renewable fuels (bioethanol, biodiesel, biogas and hydrogen) are increased in the transport sector worldwide. From an environmental and resource-efficiency perspective biogas has several advantages in ...

Carbon nanotubes have been of great interest because of their simplicity and ease of synthesis. The novel properties of nanostructured carbon nanotubes such as high surface area, good stiffness, and resilience have been explored in many engineering applications. Research on carbon nanotubes have shown the application in the field of energy storage, hydrogen storage, electrochemical supercapacit...

Part I. The Production of Bacterial Toxins .. 4 1. The use of media of simplified composition.......................... 4 2. The possible relationship of oxidation-reduction systems to the formation of toxins............................................. 6 3. Other factors affecting the formation of toxins .......... .......... 8 4. Toxins as products of secretion, autolysis, or the action of en...

The article describes currently used methods of cleaning ship oil-containing waters and suggests a new method their disposal. There are shown the specific features composition properties waters, current requirements for purification depending on areas operation vessel. main reasons oily emerging given, as well factors affecting formation ships. A picture water-fuel emulsion under microscope is ...

In traditional methods of water purification, the use chemical reagents leads to appearance toxic by-products and wastes that require complex energy-consumption processing technologies. accordance with principles sustainable development “green” technologies, a significant revision existing treatment is required. The review highlights main trends innovative purification disinfection Modification...

Bacillus thuringiensis (Bt) has been extensively used in biopesticidal formulations due to its safe environmental and human health records. The widespread use of Bt is often challenged by production as well as formulation costs which are in direct contact with downstream processing, i.e. the separation/purification step. Downstream separation/purification efficacy governs the marketabi...

Natural products provide excellent potential leads for drug development because of their chemical diversity and biological functionality. However, the productivity of discovery of new, pharmacologically active natural products has traditionally been low due to inherent difficulties and costs associated with extract dereplication, i.e., isolation, purification and structure elucidation of indivi...

Early investigations on the purification and characterization of the hypophyseal interstitial cell-stimulating hormone yielded highly active products from sheep (l-3) and swine (4,5) pituitary glands. The preparations appeared to be homogeneous according to the physical and biological criteria of purity then available. The importance of the early ovine and porcine preparations is attested by th...