Anthropogenic and demographic processes cause worldwide air problems, giving rise to focus on exhaust air purification to counteract these effects. Due to the large number of substances found in exhaust air and the various operational parameters needed, a huge amount of often high dimensional data has to be analyzed. The ultimate goal is to finally reduce data complexity in terms of information...

Room temperature catalytic oxidation by noble metals is considered to be the most promising strategy for the removal of HCHO, which is one of the major indoor air pollutants. Hierarchically macro-mesoporous structured Pt/γ-Al2O3 hollow spheres with open and accessible pores were synthesized and used for catalytic oxidative decomposition of HCHO at room temperature. The prepared composite hollow...

Macrophomina phaseolina was cultivated in complex and simple media for the production of extracellular lipolytic enzymes. Culture supernatants were batch foam fractionated for the recovery of these enzymes, and column design and operation included the use of P 2 frit (porosity 40 to 100  μ m), air as sparging gas at variable flow rates, and Triton X-100 added at the beginning or gradually in al...

We compared spectra and intensity light of different sources, such as a UV-A lamp, UV-C visible bulb, atmospheric nonthermal plasma emission. Spectroscopic measurements were performed with an optical emission spectrometer radiometric radiometer to which UV-A, UV-C, probes coupled measure the per unit surface. For each source, we measured spectrum using also varying relative distance. The was ge...

The effect of photocatalytically generated surface HNO3 on NOx and VOC removal activity is investigated using three very different photocatalytic films, namely, P25 TiO2, a commercial exterior paint (produced by STO Gmb) air-purifying curtain fabric (IKEA). required accelerated weathering the cloth UV-preconditioning before exhibiting significant activity. When tested nitric oxide ISO 22197-1:2...

High-concentration oil mists from machining plant equipment can cause serious health problems for workers. The concentration of mist is generally reduced by ventilation and purification systems. However, the coupling relationship interaction between systems are not well understood. This study based on an actual factory. First, CFD simulation method was validated experimental data. Secondly, inf...