Advanced Materials Research Vols. 347-353

Abstract: The two main secondary metabolites in Glycyrrhiza Species are Glycyrrhizic acid and liquiritin. They are considered as active ingredients . The content of these compounds showed variation in different species. Standard chemical fingerprints were generated from cultivated Glycyrrhiza uralensis, G. inflate and G. glabra, which could be identification markers. Five efficient inter-simple sequence repeat (ISSR) primers were screened and optimized for detecting the genetic diversity in three cultivated Glycyrrhiza uralensis, G. inflate and G. glabra. By using two characteristic peaks compare with three cultivars, Glycyrrhiza uralensis and G. glabra were bigger similarity than G. inflate. The results is in accordance with the results by ISSR markers. The higher genetic diversity in G. inflate was useful to more broad breeding. Our result suggest that provides an optimized method for assessment genetic diversity of cultivated Glycyrrhiza uralensis, G. inflate and G. glabra using Chemical fingerprint and ISSR markers which is useful for further investigation in breeding.

Abstract: As an energy-intensive sector, industrial sector is the subject of carbon emissions. The changes of the sector profoundly affect the pattern of China's overall carbon productivity. Based on DEA method, this paper calculated the generalized carbon-productivity from 2004-2009 of China’s sub-industrial sectors, and then decomposed their changes. The results indicate: 1. the overall carbon-productivity of China’s sub-industrial sectors was low, and there is an internal imbalance; 2.the low carbon-productivity is mainly due to the low technical efficiency and scale inefficiency.

Abstract: The performance of a three phase fluidized bed biofilm reactor used to treat cane sugar wastewater has been investigated. Experimental results showed that, the continuous bioprocess treated the real wastewater of sugar cane factories under the condition of maintaining the hydraulic retention time (HRT) at 3~3.5 h, the maximum removal percentage of COD and NH4–N could reach to 91.38% and 92.39% respectively, and the effluent COD and NH4–N were lower than 120 and 10 mg /L for 40 days, which had achieved the national primary discharge standard of PR China. And when the organic loading rate (OLR) was increased from 2.3 kgCOD/m3•d to 5.1kgCOD/m3•d, the reactor can achieve the treatment without affecting its performance, and the reactor had high operation flexibility and the ability to resist shock loading.

Abstract: Aerogel is a highly porous material. It has the best thermal insulation properties in all solid-state materials. This paper carried out a preliminary study to see the influence on efficiency of flat-plate collector used aerogel. Keeping the other parts of flat-plate collector unchange, the aerogel layer is placed between the transparent cover and absorber plate. Through specific calculation, analysed thermal efficiency of this model of flat-plate collector, and compared with the ordinary glass model. The results show that aerogel can greatly improve collector efficiency , as table 1 show the efficiency of aerogel model is 1.66 times higher than ordinary model.

Abstract: The synthesis mechanism and microstructures of BaIn2O4 particles were analyzed by simultaneous thermogravimetry - differential scanning calorimetry (TG-DSC), X-ray diffraction (XRD), and scanning electron microscope (SEM). Firstly, In(OH)3 and BaCO3 precursors were prepared by the co-precipitation method. Next, during the sintering process In(OH)3 initially decomposed into In2O3 and water, and then BaCO3 reacted with In2O3 to synthesize Ba4In6O13. Finally, Ba4In6O13 and In2O3 further reacted to form BaIn2O4. The obtained BaIn2O4 particles were in monoclinic structure and exhibited high crystal quality. The grains were tightly bound together and their boundaries became blurry. The grain sizes increased with increasing the sintering temperature.

Abstract: Keywords: Fluidized bed；Bubbling bed；Induced crystallization；Fluoride removal；Quartz sands Abstract: Through establishing two kinds of experimental device, regular bed and bubbling fluidized bed, it researched the treatment process of producing fluorine-containing wastewater in the method of chemical-induced crystallization. Taking a way of continuous flow, ordinary fluidized bed continuous flow approach measured the amount of fluoride crystals and the treatment effect. Using intermittent operation, bubbling fluidized bed measured the amount of fluoride crystal and the treatment effect. The results show that: ordinary fluidized bed treatment effect worse than the bubbling fluidized bed. Bubbling fluidized bed in a short time large amount of fluoride crystals, can be a lot of fluoride to fluoride content of waste water treatment 10mg / L or less. The technical processing speed, good effect, the reaction vessel is small, simple device, easy to control, with good prospects for practical application.

Abstract: Green structure can not only be used for energy saving system, but also can be an energy production source called bio-energy, to support the use of renewable energy sources for generating electricity and heat. The district heating system in Enköping has connected all mayor buildings in the town and also most of the single-family houses. In 1994 a CHP plant was commissioned on bio-energy and in 1997 an oil-fired boiler was converted to wood powder. Since then all electricity and all heat produced are based on bio-energy.

Abstract: A well-crystallized cryptomelane-like material (α-MnO2) has been synthesized by redox reaction between Mn2+ and MnO4- under acid condition at certain temperature. This composite material was characterized by X-ray diffraction, volumetric (N2 adsorption-desorption) and scanning electron microscopic analysis, as well as the Laser Raman spectroscopy. Synthetic cryptomelane was used in the oxidation of hydroxylation of phenol in order to study the oxidation activity. The result showed that the degradation rate of 50 mL of 100 mg/L phenol could recch to nearly 100%, under the conditions of pH 2.0, 3 g/L of synthetic cryptomelane with the grain size of 120~160 mesh, and the reaction time of 5 h at room temperature. The treated wastewater has achieved the industrial wastewater discharge standard. Moreover, the economic cost of synthetic cryptomelane was cheaper and the treatment effect of phenol becomed better. Therefore, the synthetic cryptomelane is believed to have a bright prospect in the development of industrial sewage treatment.

Abstract: This paper introduces the basic concept of fly ash, expounds the dangers of fly ash. The comprehensive utilization of coal ash means and the present status and progress have been described in detail. Especially, the applications of fly ash in material and chemical industry have been discussed.

Abstract: Abstract. By investigating the soil salt content and groundwater quality of typical profiles of soil and water development regions in Fukang City and Hami City of Xinjiang Uygur Autonomous Region, this study analyzed the redistribution characteristics of salt content in soil and groundwater under the conditions with or without horizontal drainage in the initial stage of reclamation. The results showed that many soil salts accumulated in the reclamation area could be discharged from the farmland under horizontal drainage conditions in the initial stages of reclamation, so the salt contents of soil and groundwater below the cultivated horizon were low; but in reclamation areas with shaft well drainage instead of horizontal drainage in the initial stages of reclamation, the salt in the surface stratum leached into the soil and groundwater below the cultivated horizon due to the descent of the groundwater level.