Advanced Materials Research Vols. 616-618

Abstract: According to the global carbon balance, the lost carbon is called missing carbon sinks were taken up by geological. In order to describe carbon sinks mechanism, Maocun watershed was selected as a study area, and choose four sites in different geological background, where the electrical conductivity (Ec), bicarbonate, temperature and PH value are monitored, the results show that: (1) The amount of bicarbonate in sandstone water is less than any karst water, the order of bicarbonate is that: (HCO3-)_XiaolongbeiBianyanMaocunchukouBeidiping, and with exogenous water which contain low concentration of bicarbonate flow into the karst area along the water canal, bicarbonate increase step by step until stable; (2)Temperature, hydrophyte photosynthesis are the main impact factors affect on the carbon sinks flux; (3) Exogenous water can aggravate the carbon sinks flux.

Abstract: Limestone is modified with acetic acid solution as a CO₂ sorbent in order to solve the problem that the carbonation conversion of limestone decays sharply with the number of cycles. The results show that the carbonation conversion of modified limestone is much higher than original one, and it still achieves as high as 0.5 after 20 cycles. The mechanism of the carbonation conversion improvement for modified limestone was investigated by means of XRD, SEM and nitrogen adsorption instrument. It indicates that the grain size of CaO from modified limestone is smaller than original one. The acetification restrains the increase of grain size for CaO as the number of cycles increase. Sequentially, the extent of sintering for modified limestone is reduced. The fractal dimension of calcined modified limestone is higher than calcined original one. The inner surface of calcined modified limestone is much rougher and more complicated. The acetification makes limestone produce abundant pores. The surface area and pore volume of calcined modified limestone are far greater than those of calcined original one after the same cycles.

Abstract: This article uses Logarithmic Mean Divisia Index Method (LMDI) to analyze influence factors of emission in France during last 50 years, including energy use, GDP, carbon density, energy structure and population. Energy structure problem is proposed at the end of the article.

Abstract: Membrane gas absorption technology is a promising technology for CO₂ removal from flue gases produced by fossil fuels combustion, which has the potential of enhancing the separation efficiency and reducing the costs associated with CO₂ capture. In the present paper, important aspects of CO₂ removal by membrane gas absorption technology, including liquid absorbents, membrane materials, membrane-absorbent compatibility, membrane wetting and corresponding solutions have been reviewed. Furthermore, future potential in research and development of gas-liquid membrane contactors for CO₂ removal has also been briefly discussed.

Abstract: A small hollow-fiber membrane contactor system was used to test the absorption and desorption CO2 using mixed absorption solution of SG/PG and TEA. The results showed that absorption effect of SG was better than PG under low concentrations, but their desorption was the opposite. With the increase of concentration, the absorption effect of SG tended to weak, while the desorption was enhanced. And, PG was contrary. The absorption effect of mixed solution(SG+TEA, PG+TEA) was excellent when adding small amount of TEA. And, the absorption effect of TEA-SG mixed solution was amazing under the low concentration of SG. With the concentration of mixed solution increased, the auxo-action of TEA weakened. Instead, TEA played a active effect on promoting the absorption of TEA+PG mixture with the increasing of concentration. The hybrid experimental results shown that 3mol/L PG+0.1 mol/L TEA mixture absorption solution was best in absorption experiments, and 1mol/L PG+0.2 mol/L TEA mixture absorption solution was best in desorption experiments.

Abstract: For the purpose of promoting China's vehicle recycling and discarding regulations system, promoting China's vehicle and recycling industry of healthy development. Therefore, from laws and regulations construction aspects, solve the recycling end-of-life vehicles problems ,research on effective recycling of end-of-life vehicles, recycling and proper disposal , environmental protection and comprehensive utilization of resources, solve scrap steel, plastic, rubber the scarcity of resources and promote the development of China's automobile industry, promote the society, economy and environment harmonious development is of great significance. Based on the domestic and foreign vehicle recycling and discarding related laws and regulations, comparative analysis, the paper proposes some Suggestions.

Abstract: Based on the analyses of pollen samples from Well Haoke-1, this paper studies the Paleogene pollen sub-assemblage sequences of the Ek1 and the lower part of Es4 in Dongying Depression. Four sub-assemblages are distinguished, and then four phases are recognized. Through the study, it is found that the Ek1 and the lower part of Es4 in Dongying Depression belonged to the climate of subtropical semi-arid zone and the seasonal differences of climate became increasingly great with the evolution of the earth.

Abstract: Irreversible investments with largest outlay made with incomplete information are the mainstay of the oilfield development. Real Options Analysis (ROA) is a useful tool for making investment decisions under market uncertainty. Normal information generates continuous mean-reverting process for oil prices, whereas random abnormal information generates discrete jumps of random size. We will evaluate an oilfield development project using Mean-Reversion with Jumps (MRJ). As an example, we compare MRJ and Geometric Brownian Motion (GBM )valuation for the timing of investment and the optimization problem. This article concludes MRJ in some cases can induce better corporate decisions than GBM.

Abstract: With incomplete information, the oilfield development is a high-risk venture and requires the largest outlay which is not Irreversible. Real Options Analysis (ROA) is a useful tool for making investment decisions under market uncertainty. We evaluate an oilfield development project using Mean-Reversion with Jumps (MRJ) and Geometric Brownian Motion (GBM). As an example, we compare GBM and MRJ valuation for the timing of investment and the optimization problem. Furthermore, we investigate the impact of different parameters of the two stochastic oil price models. This article concludes MRJ has a better risk management ability than GBM has, especially in a higher market oil price of risk.

Abstract: Carbon capture and storage (CCS) can be an important technological option for managing CO2 emission in the context of addressing global climate change. Launching large-scale CCS projects is an effective way to accelerate technology development and deployment. In order to draw lessons from large-scale energy projects adoption and implementation, this study compares decision-making for large-scale CCS projects in China and the U.S. It compares the project agenda-setting and adoption process based on case study. It is argued that both countries have different advantages in launching large-scale energy projects. And leadership could be a key element for project adoption and implementation successfully. This factor should be highly considered in the technological innovation research.