The air pollutions from combustion flue gas and industrial gases became worse and cause the environmental problem. It is difficult for the conventional methods such as selective catalytic reduction method and lime-gypsum method to treat exhaust gases energy efficiently and inexpensively. Its energy efficiency and its initial and running costs are still in negative situation for the backward nat...

In this paper we describe a fast and interactive model to simulate and control the fire phenomenon. We use a modified interactive fluid dynamics solver to describe the motion of a 3-gas system. We simulate the motion of oxidizing air, fuel gases, and exhaust gases. The burning process is simulated by consuming fuel and air based on the amounts of fuel and air inside each grid cell. The combusti...

In this work, the catalytic activities of several single metallic oxides were studied for the treatment of propylene, a component in motorcycles' exhaust gases, under oxygen deficient conditions. Amongst them, CeO₂ is one of the materials that exhibit the highest activity for the oxidation of C₃H₆. Therefore, several mixtures of CeO₂ with other oxides (SnO₂, ZrO₂, Co₃O₄) were tested to investig...

We describe a recently developed in vitro assay for the assessment of the cytotoxicity of gaseous materials. The method is based on the pollen tube growth (PTG) test suited to determine the cytotoxicity of non-gaseous, water-soluble substances (Kristen and Kappler, 1995). Instead of the conventional PTG test, we used a semi-automatic, computer-controlled multi-channel device for the injection o...

A new technique for high resolution photoacoustic detection based on application of laser diodes has been developed. This method was tested and compared using identical photoacoustic instrumentation (cell and microphone) to study gas absorption in three different spectral regions, namely: the infrared range near 2100 cm(-1), CO and OCS fundamental band absorption; the ranges near 4200 and 4350 ...

The article considers the urgent issue of reducing toxicity harmful components car exhaust gases. In order to solve this problem, a direction was proposed improve system for cleaning gases internal combustion engines by introducing an ultrasonic emitter into muffler device. An experimental installation with made plan determining effectiveness based on method similarity theory and dimensional an...

Environmental concerns dominate the world scene in the XXI century. The petroleum and its derivatives are a major contributor to the non-renewable sources of energy. However, there are forecasts that in a time near the main sources of petroleum may exhaust. Thus, the search for alternative sources of energy, beside environmental necessity is essential to ensure the well being of all. The minera...

In the modern world, problem of environmental pollution with various toxic emissions is growing more and
 more. Exhaust or exhaust gases internal combustion engines are one those man-made factors. All countries
 impose restrictions on concentration hazardous substances, for example: Euro - cars, Tier and Stage
 heavy equipment MARPOL-73/78, which regulates from maritime transport...

After-treatment technologies are adopted in automobiles and ships to meet strict emission regulations, which increase exhaust back pressure. Furthermore, underwater exhaust systems are employed on board ships to save space, and reduce noise and pollution on working decks. However, water at exhaust outlet creates a flow resistance for the exhaust gases, which adds to the back pressure. High back...