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Tropospheric ozone (O3) is regarded as one of the most wide-spread air pollutants, and it is likely to increase further in many urban areas of the world. Therefore, trees in urban areas are expected to be subjected to increasing elevated O3 stress. In this study, four 4-year-old urban tree species (Ginkgo biloba, Quercus mongolica, Pinus tabulaeformis and Pinus armandii) in the northeast of China...
The present study attempts to clean up 1,2,4-trichlorobenzene (TCB) vapor simultaneously from the flue gas in the lab-scale bubbling reactor. Experiments were carried out to examine the effect of various operating parameters like input TCB vapor concentration, pH value of reaction medium, reaction temperature etc. It was found that at the optimum experimental conditions of reaction temperature 50degC,...
A new method of converting the main component desulfurization gypsum (CaSO4) using the sulfate-reducing bacteria (SRB) is proposed in this paper in the view of Chinese current condition. The metabolism way and function of some microbes in desulfurization are introduced in detail. By way of chemical analysis, the existing forms of sulfur and calcium in product were determined. By means of test of orthogonal...
A new-style complex absorbent was prepared for simultaneous desulfurization and denitrification in this paper. The performance of the absorbent was tested in fixed bed. On the basis of the experimental results in fixed bed, the M substances were selected as the optimal additive. Furthermore the effects of various factors, such as additive content, flue gas temperature, humidity, Ca/(S+N), and NOx...
The reduction of NO was successfully demonstrated in this paper to develop a NO removal process by microwave- induced decomposition method for combustion flue gas. The absorbent of the microwave energy used in this experiment was activated carbon. Simulated flue gas containing NO gas was passed through the activated carbon bed and microwave energy was then applied for decomposition of the NO. It was...
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