Advanced Materials Research Vols. 113-116

Abstract: The moderate pollution load of APMP effluents provides a chance for a new treatment process--combination of biological pre-treatment and coagulation treatment. Biological pre-treatment can reduce the pollution load and produce biomass at the same time. The removal of COD was 60.22% and the yield of biomass was 7.12g/L at the optimized conditions treated by Aspergillus niger. And the removal of acid-soluble lignin and color were up to 60% and 42.57%. The coagulation treatment was applied after bio-treatment by using alum and PAM as coagulation agent. The conditions of coagulation were optimized in this article. The optimized conditions were: Dosages of alum and PAM were 1000-1200mg/L and 2mg/L, pH is 5, stirring time is 30S at 300rpm, the temperature is 50°C. The coagulation removals of COD, color and turbidity were 83.80%, 86.38% and 98.33%. The removals of color were characterized by absorbance of 465nm, 325nm, 275nm and 254nm.

Abstract: A microcystin detection and Environmental Scanning Electron Microscope investigation were carried out to analyze the microcystin removal effect and the forms of Microcystis aeruginosa cells with different dosage of potassium permanganate loaded zeolite. The results showed that potassium permanganate loaded zeolite had significant microcystin-LR removal effect both in the Microcystis aeruginosa and Nostoc samples. The optimal dosage and the optimal removal rate were 96.0% at 220mg/L and 77% at 110mg/L separately. The cell wall of Microcystis aeruginosa was ruptured by dosing both potassium permanganate and potassium permanganate loaded zeolite, while algae cells were accumulated. Cell groups treated by potassium permanganate loaded zeolite appeared more compact to improve cells settling performance and wrapped exudates to avoid microcystin excessing into water. There were abundant adsorption sites to adsorb intracellular and extracellular microcystin after potassium permanganate released from zeolite.

Abstract: The research on biomass conversion technology has attracted great attention of the world along with the shortage of fossil energy resources. But the effect and efficiency of the pretreatment technique now used in biomass conversion are not so perfect. Using new steam explosion technique as a pretreatment process of biomass conversion has been reported rarely. The mechanism of steam explosion and its application effect in biomass conversion and utilization were introduced and analyzed respectively in this paper. The result showed that the semi-cellulose of steam exploded corn stalk degraded greatly to 7.57% from 25.4%, and a little cellulose and lignin degraded in this process. The saccharification rate of steam exploded green reserved corn stalk was 33.4% under the condition 2.0Mpa, 120s. It’s 1.33 times higher than the unexploded. According to the result of experimentation, the steam explosion technique should be a good pretreatment method for biomass conversion.

Abstract: This document explains and demonstrates which should be taken in Xinjiang mode of development in the current water shortage situation. Using scenario analysis method and IPAT model（Impact, Population, Affluence, Technolog）, the article demonstrates seven possible development scenarios and analyzes each scenarios for the future use of water resources in oasis. By comparing and analysising, the scenario 4 (accelerated economic growth, adjusting the industrial structure, strengthen water-saving water consumption of the weak control) and the scenario 7 (accelerated economic growth, adjusting the industrial structure, strengthen water-saving water consumption of the strong control) can be the most executive mode. This document will play a positive guiding significance in the actual work of water resources in Xinjiang Oasis on some degree.

Abstract: In order to treat wastewater rich in sulfate and organic carbon, an anaerobic attached-growth bioreactor was set up. It was the pretreatment of desulfurization-denitrification process. At hydraulic retention time of 128h-6.2h, sulfate removal rate and sulfide generating rate took on initial increasing and subsequent decreasing. At hydraulic retention time of 7.7h-10.2h, the removals of sulfate and organic carbon, sulfide generating rate reached 95.79%, 80% and 58.82%, respectively. The results showed that the suitable hydraulic retention time in sulfate reduction stage for the pretreatment of desulfurization-denitrification process was 7.7h-10.2h.

Abstract: This document attempts to establish a model of ecological compensation by using the theory of the value of the ecosystem services and put it into practice, to provide policy reference to the sustainable development of the new corps in ecologically fragile areas. Using the ecosystem services price method, the article calculated the value of ecosystem services of XPCC. Then calculated willingness of pay of urban residents by the Corps 's Logistic growth curve,and get the ecological compensation of Corps in 2006, which is 189, 816, 674, 000 Yuan. On this basis, the article determined the Compensation rates and the amount of compensation of the division of the Corps.

Abstract: The composite element method（CEM） is utilized to mix wood fiber and activated carbon into the self-adsorption fiber board under certain process condition. The density, bending strength, elastic modulus, internal bond strength and water absorption are tested under the same condition, at the same time, the formaldehyde emission rate is measured with desiccator method. The result shows that all the mechanical properties of self-adsorption fiber board are a bit higher than that of ordinary fiber board. The effect of formaldehyde self-absorption is highly related to the amount of added activated carbon instead of the form. Under the test condition, the emission of formaldehyde of the self-adsorption fiber board added with 10% activated carbon grain can be reduced by 35%. Further more, it is easier for the self-adsorption fiber board added with powder activated carbon to obtain even physical and mechanical performance and absorption effect.

Abstract: Effects of fiber fabric type, glue spread, adhesive kind and angle between carbon fiber and wood grain on bonding quality of fiber-wood interface were investigated to make it clear whether wood adhesive can be used in fiber reinforced wood products. Four different kinds of fiber fabric were bonded into poplar sample with three different adhesives and three different glue spread. Shear strength of samples were measured by compression shear test. The results indicated that bonding quality of GFMa (Glass Fiber Mat)-wood interface was the best of all and 400g/mm2 was the optimal glue spread for various adhesive and adhesion. Results of control experiment of angle between carbon fiber and wood grain indicated that bonding quality of samples with carbon fiber parallel to wood grain was better than that with carbon fiber perpendicular to wood grain.

Abstract: Due to an enhancement effect of Lumino-KBrO3 chemiluminescence system induced by nitrite, nitrite in sauerkraut was determined using chemiluminescence method. The effects of reaction substance concentrations, acidity, and interfering ions on chemiluminescence system were investigated to explore the optimal conditions for nitrite determination. Results revealed that the optimal reaction conditions of chemiluminescence were 0.05MH2SO4, 0.06MKBrO3, 1.50×10-4MLuminol and 0.25MNaOH in the chemiluminescence system. The detection limit (S/N=3)for NO2-was 8×10-11g/mL and an excellent linear relationship was exhibited in the range of 0.001－10mg/L. Eleven replicate determinations for nitrite in sauerkraut at 1.00mg/kg exhibited an average recovery rate of 101.00% and a relative standard deviation of 2.90%. Therefore, it revealed that the method not only possessed high sensitive and selective characteristics, but also possessed rapid, simple and convenient characteristics, compared with traditional methods.

Abstract: The application of GIS technology to Military Environmental Information(MEI) management will play a vital role in MEI management, and can lead to better decision-making. This paper discusses both the management method and the application fields. Case studies, like information management, pollution coverage evaluating, military transportation planning and monitoring, and decision-making supporting, are presented in this paper. Detailed digital basemap database, Digital Elevation Model(DEM) data, Digital OrthoImage Model(DOM) data, image database of Remote Sensing, Social economic element database, and other informations related to military features, can be integrated into MEI GIS, and will meet the needs for later query and statistics. Spatial analysis is the bridge that links fundamental data models to GIS technology. While buffer analysis can be used for identifying the locations of hazardous chemical storage sites in relation to residents living area, and can facilitate the evaluation of the threatened area in the event of a leak or spill of hazardous materials. Network analysis can be used in military transportation planning and monitoring. GIS is particularly useful in providing composite visual representation of fairly complex underlying model calculations, analysts can draw implicit and important conclusion from the already known geographical data. The study shows that the management of MEI using GIS technology is reasonable and feasible, and GIS is a highly efficient tool in MEI management.