نتایج جستجو برای: so2 oxidation
تعداد نتایج: 122483 فیلتر نتایج به سال:
Stratospheric aerosols (SAs) are a variable component of the Earth’s albedo that may be intentionally enhanced in the future to offset greenhouse gases (geoengineering). The role of tropospheric-sourced sulfur dioxide (SO2) in maintaining background SAs has been debated for decades without in situ measurements of SO2 at the tropical tropopause to inform this issue. Here we clarify the role of S...
Sulfur dioxide (SO2) is a major air pollutant, especially in developing countries. Many trees are seriously impaired by SO2, while other species can mitigate air pollution by absorbing this gas. Planting appropriate tree species near industrial complexes is critical for aesthetic value and pollution mitigation. In this study, six landscape tree species typical of a subtropical area were investi...
Pt/CeMnOx/Diatomite: A Highly Active Catalyst for the Oxidative Removal of Toluene and Ethyl Acetate
Pt nanoparticles and a CeMnOx composite were loaded on the surface of natural diatomite material to generate Pt/CeMnOx/diatomite using redox precipitation impregnation methods. The physicochemical properties catalysts characterized by means various techniques. catalytic resistance H2O SO2 measured for oxidation typical volatile organic compounds (i.e., toluene ethyl acetate). Among all as-prepa...
Abstract. We employ the ECHAM5/MESSy2 atmospheric chemistry general circulation model (EMAC) that incorporates calculations of gas-phase and heterogeneous coupled with ozone cycle aerosol formation, transport, microphysics to calculate 1991 Pinatubo volcanic cloud. considered simultaneous injections SO2, ash, water vapor. conducted multiple ensemble simulations different injection configuration...
Aiming at NOx (NO 90%, NO2 10%) and SO2 in simulated vessel emissions, denitration desulfurization were studied through ozone oxidation combined with seawater as absorbent. Specifically, the different influencing factors of analyzed. The results indicated that efficiency NO can reach over 90% when molar ratio O3/NO is 1.2. Ozone washing same unit decrease temperature NO, avoid high decompositio...
Stratospheric aerosols (SAs) are a variable component of the Earth's albedo that may be intentionally enhanced in the future to offset greenhouse gases (geoengineering). The role of tropospheric-sourced sulfur dioxide (SO2) in maintaining background SAs has been debated for decades without in-situ measurements of SO2 at the tropical tropopause to inform this issue. Here we clarify the role of S...
The simultaneous removal of SO2/NO2 by limestone slurry was studied in a gas-liquid bubbling reactor. Experiments were carried out to find the effect of various operating parameters such as inlet concentration of SO2 and NO2, reaction temperature, O2 content in the flue gas and additive on the SO2 and NO2 removal efficiencies. SO2 removal efficiency decreased with inlet NO2 concentration, react...
Sulfur dioxide (SO2) is a gaseous environmental pollutant which is routinely used in industry as a preservative and antimicrobial. Recent data suggests that SO2 may have value as a therapeutic agent. However, due to its gaseous nature, localizing SO2 generation is challenging. Herein, various 1,3-dihydrobenzo[c]thiophene 2,2-dioxides (benzosulfones) were prepared as candidates for photochemical...
The sulfur dioxide (SO2) compound is a primary environmental pollutant worldwide, whereas elemental (S) global commodity possessing variety of industrial as well commercial functions. chemical relationship between poisonous SO2 and commercially viable S has motivated this investigation using the Density Functional Theory calculation relative transition state barriers for two-step dehydro-sulfur...
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