Simulated compounds were prepared by loading K2SO4 onto V2O5/AC catalysts. Study the effect of K2SO4 on V1/AC catalysts in the presence of low concentration SO2. Transient response techniques, TPD was carried out. The results indicated that the DeNO activity of V1/AC catalysts was decreased seriously in the early period of operation, but the deactivation was gradually diminished with SO2 adsorp...

The Triassic-Jurassic boundary (Tr-J; ∼201 Ma) is marked by a doubling in the concentration of atmospheric CO2, rising temperatures, and ecosystem instability. This appears to have been driven by a major perturbation in the global carbon cycle due to massive volcanism in the Central Atlantic Magmatic Province. It is hypothesized that this volcanism also likely delivered sulphur dioxide (SO2) to...

Simultaneous removal of NO(x) and SO2 from exhausted gas were investigated by studying co-culture of sulfate reducing bacteria and anaerobic denitrifying bacteria, separated from landfill leachate. When H2S, generated by sulfate reducing bacteria was chosen as the sole electron donor for anaerobic denitrifying bacteria, the co-culture system demonstrated a faster NO removal rate, higher stabili...

The impact of air pollution on human health is subject to extensive research. most evidence concerns the effect of exposure to airborne Pm10 and PM2.5 on daily mortality and hospital admissions. however; less is known about the effects of SO2. our study (time-series analysis) investigates the effects of 24-hour concentrations of Pm10, SO2 and nOX on daily mortality over 2001-2002 in 14 cities o...

This work deals with modeling and simulation of SO2 removal in a ceramic membrane by means of FEM. A mass transfer model was developed to predict the performance of SO2 absorption in a chemical solvent. The model was based on solving conservation equations for gas component in the membrane. Computational fluid dynamics (CFD) of mass and momentum were used to solve the model equations. The simul...

Pulsed photoacoustic spectroscopy was used to measure blood oxygen saturation in vitro. An optical parametric oscillator laser system provided nanosecond excitation pulses over the wavelength range 740-1040 nm which were used to generate photoacoustic signals in a cuvette through which a saline suspension of red blood cells was circulated. The signal amplitude and the effective attenuation coef...

Abstract. Vehicle exhaust, as a major source of air pollutants in urban areas, contains complex mixture organic vapours including long-chain alkanes and aromatic hydrocarbons. The atmospheric oxidation vehicle emissions is highly system inorganic gases (e.g. NOx SO2) from other sources coexist therefore remains poorly understood. In this work, the photooxidation n-dodecane, 1,3,5-trimethylbenze...