Advanced Materials Research Vol. 803

Abstract: As the increasingly strict emission regulations, develop new and efficient desulfurization equipment, to meet the requirements of future Marine sulfur emissions control, ensure freedom of navigation in all waters of the ship, we need to desulfurization of diesel engine emissions. Waste desulfurization generated also need to process and strict inspection to reach the discharge standard of corresponding IMO. The main purpose of this paper is to study a new system for processing waste engine emission for marine diesel engine, this system will make waste liquid treatment becomes more efficient, energy saving, but also saves the cost of waste water treatment. This paper introduces a new technology for processing ship washing desulfurization waste liquid, we analyze the advantages and disadvantages of this equipment. Finally, this method gives the improving measures for the problems and prospects for the development trend of ship desulfurization wastewater treatment.

Abstract: Vaporous hydrogen peroxide (VHP) is an oxidizing agent effective against bacteria, viruses and chemical agent. The paper uses VHP in saturation concentration against HD to get the relationship between decontamination time with different contamination densities, diverse contamination materials and different sizes of droplet by VHP decontamination device which is designed independently in order to provide theory basis to improve the decontamination effect of VHP decontamination.

Abstract: Computational Fluid Dynamics (CFD) was used to simulate the flow field of gas-liquid Taylor flow in circular capillaries. The separate influence of gas bubble velocity V_b,Taylor unit length L_UC, film length L_film and liquid film thickness δ_film on both the liquid slug velocity V_x,top and film velocity V_x,film were investigated. The values of V_x,top are mainly dependent on V_b and δ_film while V_x,film relies on all the four parameters.

Abstract: The photo-biocatalytic ability of eukaryotic microalgae and prokaryotic microalgae on nonnatural prochiral ketones to produce chiral alcohols was studied in this paper. The results proved that ethyl acetoacetate and acetophenone can be stereo-selectively reduced to the corresponding ethyl S-3-hydroxybutyrate (EHB) and S-1-phenylethanol (PEA) by microalgal photo-biocatalysis with high enantioselectivity, respectively. Scenedesmus obliquus has the best photo-biocatalytic activity to ethyl acetoacetate reduction reaction among the two selected eukaryotic microalgae, about 43.98% yield and 69.58% e.e. achieved. Spirulina platensis is the best biocatalyst to acetophenone among the four selected prokaryotic microalgae, about 52.65% yield and 99.40% e.e. achieved.

Abstract: Through analyzing the water quality class of TN, TP of 14 reservoirs in Liaoning province and the change trend for many years, the algae experience formula is proposed using stumn combined with the actual weather conditions in Liaoning province . It can be concluded that although the TN pollution of the Liaoning province is heavy, the TP is well controlled. And the eutrophication of reservoir has not occurred for many years, because the restriction of TP is good .

Abstract: Ammonium sulfate, ammonium bisulfate and ferric oxide are mixed at a molar ratio of 8:5:13 and heated in high temperature muffle furnace or fluidized bed at different temperature. To the sample, the thermal gravimetric (TG) analysis is used, the reaction residue is analyzed by fourier transform infrared spectroscopy (FT-IR) and chemical analysis, the generated gas is qualitatively analyzed as well. The process of thermal decomposition for ammonium sulfate and ammonium bisulfate via addition of Ferric oxide has four stages-the decomposition of ammonium sulfate, the formation of ammonium ferric pyrosulfate, the decomposition of ammonium ferric pyrosulfate, and the decomposition of ferric sulfate. The ammonium ion in sample is completely decomposed at about 500°C. The decomposition ratio of sulfate ion or bisulfate ion is up to 99.8% above 800°C.

Abstract: A series of N-(pyridin-4-yl) salicylamides derivatives were prepared through acylation of the corresponding acetylsalicyloyl chlorides with substituted 4-amino-pyridines. These compounds might serve as prospective wide-spectrum antimycobacterial substances.

Abstract: As the Temperature Reduces in Heated Waxy Oil Pipeline, Wax Crystal Continues to Precipitate. the Wax Sediment Reduces the Pipeline Transmission Capacity, Increases the Friction Resistance and Raises Power Consumption. to Restore the Pipeline Transmission Capacity and Ensure the Safety Operation of Pipeline, Regular Wax Removing is Needed. Taking the Transition of Flow States into Consideration, Different Formulas of Temperature and Friction Drop under Different Flow States are Applied. Wax Precipitation and Running Cost Corresponding to Different Flow States are Obtained, and the Best Pigging Circle is Determined. Finally, the Effect of Different Flow States on Temperature Drop, Pressure Drop and Pigging Circle of Heated Waxy Oil Pipeline is Analyzed.

Abstract: A novel metalorganic coordination polymer, namely [Co₃(bpd)_5.5(NCS)₆(NH₃)]_n2H₂O (1) (bpd=1,4-bis (4-pyridyl)-2,3-diaza-1,3-butadiene), has been synthesized and characterized by elemental analyses, infrared spectroscopy, and single-crystal X-ray diffraction. Compound 1 presents 2D[3,4,-connected 3-nodal net with the point symbol (4²68²10)(4⁴6²)(8²10). In addition, four identical 2D single nets is interlocked with each other in parallel, thus directly leading to the formation of a polycatenated layer (2D2D).

Abstract: The foaming property of the aqueous mixtures of a fluorocarbon surfactant (FC) and a hydrocarbon surfactant (AOS) had been investigated. And the influence of polymer and oil on foam stability was studied systematically. Experimental studies indicated that AOS and FC surfactants had good cooperative effect. The foam stability could be remarkably improved with polymer and oil would impact the foam stability greatly. Mechanism on interaction between foam and oil for experimental foam systems was also studied quantitatively based on spreading coefficient. The effect of oil on the stability of polymer enhanced foams could not be fully understood by spreading coefficient. The increasing in viscoelasticity of foam films would play a key role in the stability improvement for polymer enhanced foams.