The integrated mechanism of the catalytic oxidation of NO by N2O on the metal-free support of nitrogen doped graphene (NG) is investigated using density function theory calculations. The results indicate that the N2O can be intensively adsorbed on NG support, while the NO, N2, NO2 are all weakly adsorbed. In the oxidation process, a two-step mechanism is identified: the dissociation of N2O foll...

Waste heat to power (WHP) is the process of capturing heat discarded by an existing industrial process and using that heat to generate power (see Figure 1). Energyintensive industrial processes—such as those occurring at refineries, steel mills, glass furnaces, and cement kilns—all release hot exhaust gases and waste streams that can be harnessed with wellestablished technologies to generate el...

There are many automotive applications where complex chemistry plays an important role. For example, more stringent regulatory requirements for automobiles and trucks have led to a need to fine-tune combustors in IC engines to reduce emissions of pollutants such as NOx and introduce catalytic converter systems for aftertreatment of exhaust gases to further reduce pollutant emissions. However, m...

By means of carefully devised assumptions, a simple linear model is presented for an absorption refrigeration unit employing either water-lithium bromide or ammonia-water refrigerant-absorbent pairs. Absorption systems are an alternative to vapour compression systems by being thermally activated. Such heat energy may come from the sun or even from hot exhaust gases from a particular engineering...

Benzene is an environmental pollutant which consumers mainly ingest via respiratory air. It can also occur as contamination in drinking water and foods. Benzene is principally emitted from petrol through exhaust gases. The substance is carcinogenic and damages germ cells. The available data do not allow the establishment of a safe level of exposure. Like all carcinogenic substances for which no...

Industrialization of plasma De-NOx system needs combination of various technologies technologies. This article introduces these many technologies and discusses the technical problems and their solutions. Such technologies include system design, efficiency requirements, component design method, plasma chemical reactions, optimization of process, scheme of the system, modification of discharge mo...

The emissions of gasoline and diesel engines contribute significantly to ever increasing pollution of living environment. A specific part of exhaust gases is composed of carcinogenic derivatives of polycyclic aromatic hydrocarbons. Amino derivatives of parent hydrocarbon fluorene, namely 2-aminofluorene (2-AF) and 2,7-diaminofluorene (2,7-DAF), are well-known hazardous air and water pollutants ...

Exhaust gases from an internal combustion engine, alternatively powered by gasoline or by liquefied petroleum gas, were analysed for polynuclear aromatic hydrocarbons. The engine operated a lift truck for the handling of warehouse goods. A combined condensation-filtration apparatus was constructed for sampling of the exhausts. The basic steps of the analytical procedure are summarized here. Sev...

The role of the retention of carcinogenic hydrocarbons in tis sues in earcinogenesis was demonstrated. Possible contamination of food with carcinogenic hydrocarbons is discussed and the measures for its prevention are planned. Much attention was given to the study of the exhaust gases of cars and to the preven tion of their carcinogenic action. The distribution of benz(a)pyrene in human environ...

Solution for the complete removal of carbon monoxide from the exhaust gases still poses a challenge to the researchers and this problem is still under development. Modeling for reduction of carbon monoxide is carried out using heterogeneous reaction using low cost non-noble metal based catalysts for the purpose of controlling emissions released to the atmosphere. A simple one-dimensional model ...