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In order to make more precise analysis on hemodynamics in boundary layer, it is necessary to investigate the approaches to the reconstruction of numerical simulation oriented patient-specific model of aortic arch aneurysm that can perform particular meshing in boundary layer. A solid model of aortic arch aneurysm was reconstructed using CAD software Geomagic and Pro/E, and a simplified model of stent...
H2O2-based advanced oxidation processes (AOPs) and SO4·--based AOPs were proved novel and promising techniques in treatment of wasterwater. Microwave (MW)-assisted hydrogen peroxide (H2O2), peroxymonosulfate (PMS) and persulfate (PS) were used to dispose of COD in landfill leachate. Oxidant dosage and chloride concentration were investigated as the major operating conditions. The initial COD is 4062...
The utilization of rainwater is essential to improve ecological environment of sub-district, and is one of main approaches to achieve sustainable water resources.Taking rainwater collection and utilization of Beifang Garden district as an example in Fuxin city of northeast China, water quality analysis and water quantity balance calculations are completed, also the feasibility and necessity of rainwater...
Abstract-The anti-fatigue effect of Eucommia ulmoids leaves in mice was studied in this research. Different extracts were prepared: water extract (EUH) and 80% ethanol extract (EUE) of Eucommia ulmoids leaves. The weight-loaded swimming time and biochemical parameters, such as blood lactic acid (LA), serum urea nitrogen (SUN), hepatic glycogen and muscle glycogen were investigated. The results showed...
The natural zeolite was investigated as an inexpensive and effective adsorbent for the adsorption of Amido Black 10B, Acid Red and Safranine T from its queous solution respectively. The effect of parameters such as the solution of pH, contact time, the doze of the natural zeolite and the initial concentration of dye was examined. The adsorption isotherm was well fitted to both the Langmuir and Freundlich...
The paper adopts the chemical speciation method of direct oxidation to prepare polyferric sulfate (PFS), taking the ferrous sulfate(FeSO4·7H2O) as the raw material, and then compounds PFS with a certain quantity of polyacrylamide (PAM) to produce a stable homogeneous phase composite flocculent, polyferric sulfate - Polyacrylamide (PFS-PAM). In addition, the paper employs Kaolin clay suspension as...
Photo-Fenton reaction is a kind of advanced oxidation technology based on the reaction of hydroxyl radical. In order to further enhance the photocatalytic efficiency, with citric acid as the catalytic additive, and malachite green as the substrate, experiments on the photocatalytic oxidation of organic pollutants in UV/Fenton/Citric acid system were carried out. Effect of Fe(II) concentration, initial...
Through comparing the effluent quality under three conditions with different dissolved oxygen concentration in A2/O bioreactor, results showed that the aeration and TN removal rate under condition 3 compared with the condition 1 reduced 52.6% and enhanced roughly 12% respectively. Under the condition 3, the low oxygen condition reduced the sludge nitration performance, but it still could have NH4+...
Deoiled Jatropha curcas seed meal (DJSM), a chief waste material of oil extraction industry, will be generated on a large scale due to the growing interest in using Jatropha curcas seed oil as a feedstock for the production of biodiesel. Up to now, there is very little work on viable approach for the use of DJSM to the best of our knowledge. This article reports our studies on the utilization of this...
The random stack of oil shale slag brings a series of ecology and the environment question. This article take the oil shale slag as the primary material, uses the stage elevation of temperature rule to explore oil shale slag ceramsite, and then studies the adsorption on Cu2+ in effluent under the different environmental condition. The test results indicated that the ceramsite may achieve the adsorption...
The leaching tests and the sequential extraction procedure of heavy metals in the stainless steel plant dusts were studied. The results show that the total Cr and Cr (VI) content in argon oxygen decarburization converter dust (AODD), and the concentrations of Cd and Zn in electric arc furnace dust (EAFD) exceed the national standards. Lead is the most extractable element by the sequential extraction...
Poultry litter, municipal solid waste and corn straw were conducted in static vessel to testify the practicability of aerobic co-composting with C/N ratio at 15, 20 and 25. Various kinds of nitrogen transformation were determined at different composting stages. C/N ratios of three treatments all tended to decrease and it was remarkable at the treatment of PMC25 during composting. The total nitrogen...
The reverse supply chain is more and more concerned about because of the improvement of the environmental quality. LCA is a quantitative evaluation method of the environmental effect of a reverse supply chain. The evaluation result can be used as an objective reference in the productive design and recycling disposal and at the same time reduce the negative influence on environment so that it can facilitate...
A preparative method of furfural from bagasse catalyzed by the ionic liquid [Hmim] HSO4 (1-Methylimidazolium hydrogen sulfate) was developed in the paper and response surface methodology (RSM) was successfully applied to optimize the process. Central Composite Rotatable Design (CCRD) was employed to search for the optimal furfural yield. By the comparison of hydrolysis results of [Hmim] HSO4 and concentrated...
At present the environment in Yellow River delta region is particularly badly eroded. In view of the situation, use of vegetation for environmental protection is most effective. In order to select suitable tree species, some physiological parameters such as proline content, ratio of bound water and free water, relative conductivity of leaves were applied to this experiment to probe the capability...
Nickel (Ni) plays an important role in the growth of plants, but it is also a kind of heavy metal which can easily enrich in soil and exert toxic effect on plants. To evaluate the Ni stress on the maize growth, a pot experiment was conducted by black soils sampled from the field in the middle of Jilin province. And Ni was equilibrated in the soils to graded levels from 0 to 800mg kg-1 soil. The main...
The potential hazard of contamination directly depends on the presence and concentrations of mobile and biologically available element species. The mobility and availability of elements are known to depend on the chemical species of elements and the type of their bonding with the soil matrix. A three-step sequential extraction procedure (BCR-SEP) was used to determine the concentration of heavy metal...
Acid mine drainage (AMD) is a serious pollution problem, which is considered as one of the worst environmental problem of mining activities owing to low pH and high concentrations of heavy metals and other toxic elements. So it is crucial to control and prevent AMD production. In this study, coal mine waste with artificial irrigation leached acid drainages containing high concentrations of SO42-,...
In this paper, two kinds of fluorine-contaminate soils, fluvo-aquic soil and paddy soil, were cultivated by nitrogen fertilizer. Then, we studied the various fluorine species in the cultivated soil by sequential extraction method, and study the effect of main components in nitrogen fertilizer on pH of soils. After adding nitrogen fertilizer, the pH value of soil would increase, which consequently...
The research reveals the relationship and enrichment of heavy metals in soil of sewage irrigation area in Guangdong province, southern China. Samples were collected from topsoil (0-10cm) and subsoil (30-40cm), and the total concentrations of heavy metals were extracted by HNO3-HF-HClO4. It is concluded that Cu, Zn, Cd, and Pb may be homologous or combined pollution, and Mn and Cr may be also homologous...
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