Advanced Materials Research Vol. 1051

Abstract: The core-nanoshell composite materials with magnetic fly-ash hollow cenosphere as core and nanoLaFeO₃ as shell were synthesized by high-energy ball milling method. The samples were characterized by XRD, SEM and VSM. The results show that the core-nanoshell composite materials were prepared successfully. As the exchange-coupling interaction happens between ferrite of magnetic fly-ash hollow cenosphere and nanosized ferrite coating,the remanence and the coercivity improves, so it is better for core-nanoshell to adsorb heavy metals. The adsorption-magnetic separation processing were used for Cr (VI) of heavy metals in water, by atomic absorption spectrometry to measure ion concentration after adsorption. Batch experiments were carried out to investigate the effect of solution pH on the adsorption as well as adsorption kinetics and adsorption isotherm. The results show that at pH 2, obtain the maximum removal rate. The adsorption data were better fitted for the Freundlich model,indicating that the adsorption of Cr (VI) preferably follows multilayer and heterogeneous adsorption process. Compared with two kinetic models linear fitting parameters, adsorption conforms to pseudo secend-order kinetic model well,revealing chemisorption as the dominant mechanism.

Abstract: Nickel (Ni (II)), cobalt (Co (II)) and manganese (Mn (II)) are often encountered in wastewaters. These metals have been identified as micronutrients, at trace concentrations; however, they are microbial growth inhibitors, at relatively high concentrations. The present review discusses, in a systematic way, the individual effects of the above heavy metals to the growth of microorganisms grown under aerobic conditions, with focus on the growth of activated sludge.

Abstract: The paper presents the results of the physicochemical modeling obtained with the use of the “Selektor” program of calculation of chemical equilibriums. We have determined the stability fields of hypergene and technogene minerals crystallized in the mining wastes (tailings) from the highly concentrated pore solutions forming the drainage waters of Kavalerovo district. Our investigations allowed us to obtained new data on the pH range of the hypergene and technogene mineral formation depending of the sulfur amount in the wastes coming with the flotation reagents and sulfides under conditions of the atmosphere influence and without it. This problem for the mining technogene system of the district under consideration is first proposed to be solved with the help of the method of the physicochemical modeling.

Abstract: Based on the problems of utilization technology of oolitic hematite both at home and abroad in recent decades, this paper introduces the characteristics of oolitic hematite, and gravity concentration desliming-reverse flotation process is used for treating the Ningxiang-type oolitic hematite. The process is simple in flowsheet, easy in operation, lower cost, high adaptability, and favorable for use in commercial production, which has offered an effective way for dephosphorization and iron increase of Ningxiang-type oolitic hematite.

Abstract: Based on “Great Electric” subjects and with the characteristics of renewable powers , NCEPU positioned Hydrology and Water Resources Engineering as the main direction of development of water resources development and utilization and hydropower reservoir optimal scheduling and other services for the power sector and Formulated talents training model and curriculum system for the purpose of training senior applied talents, and has achieved some success and delivered many qualified professional talents for the sector of hydrology and electric power since set up.

Abstract: This paper aims to examine energy saving techniques in the operating systems of smartphones and to discuss the environmental threat created by the ever-growing problem of their disposal. A study of battery technology focuses upon the following varieties: Nickel Metal Hybrid, Lithium Ion and Lithium Polymer. Both environmental and user benefits of longer battery life are promoted. There follows a study of global responses to the e-waste crisis, highlighting different practices and legislation in the various countries and regions. The results of a questionnaire into the public’s disposal habits are analysed and conclusions drawn. The paper concludes with suggestions for improving the current state of smartphone disposal, focusing upon the responsibility of governments, manufacturers and individuals. Also emphasized is the need for continued scientific and technological research into solutions along with ongoing educational and public awareness campaigns.

Abstract: Low carbon consumption meets the needs of sustainable development of human society, and it can provide guidance for China to establish healthy, civilized, scientific life and consumption. The formation of the public low carbon consumption is gradual development process, generally divided into cognition stage, emotion stage and behavior stage. Determining the variety factors which influence low carbon products consumer behavior is the core problem that promotes the low carbon consumption of residents. According to the characteristics of each stage, social factors, natural factors, family factors, personal factors and behavior perception can be regarded as the important factors that effects on the low carbon consumption preference.

Abstract: Recently, Taiwan government had tried to promote more new tourism styles for the cultural heritage conservation and sustainable community development, and it also showed the importance of environmental education to transmit the ideas of global warming and other significant environmental issues by using sustainable tourism activities. Therefore, a suitable environmental education strategy was viewed as necessary policy to achieve the goal, so that a complete evaluation model for that was very important to support the related strategies. Therefore, this study tried to introduce a concept of environmental education for low carbon tourism and the cultural heritage conservation by using literature review and Fuzzy Delphi method. It also tried to find the relative importance and weight to know the true key factors for the future evaluation model. The main finding showed that “the Environmental conservation training and interpretation” was the most important factor in this issue. Then, “Low carbon transportation”, “Environmental values and attitude”, “Environmental education course design”, “Energy saving” and “Promotion activities” also played the good roles.

Abstract: The textile industry plays a very important role and this industry is one of the most complicated manufacturing industries. All producing machine occupies almost 50% energy end-use. Hence, improving energy efficiency should be a primary concern for textile factory. This study aims to energy efficiency verification in Thailand textile factory. By real-time data collection for all equipment in factory, and use simulation tool to analyze whole year energy end-use, some of useful improvement strategies and energy saving percentage could be knew. Via change the subsystems, like lighting and insulation material for example, the total energy saving could at least to 10% with 2 years payback time. It will be a good start doing energy saving in textile industry in Thailand.

Abstract: Good insulation of envelopes in new or rehabilitated buildings represents one of the major issues in reducing the energy consumption in the construction sector. In order to ensure better insulation, a material compatible with the wall must be chosen to guarantees both good thermal insulation and reduction of humidity risk.This study reviews the risks related to moisture, particularly those related to condensation one occurring in buildings. Two stages were conducted during the study. Firstly, a coupled heat, air and moisture transfer model in a multilayer wall was developed. This model took into account both the discontinuity at the interfaces between the wall layers and the evolution of material properties depending on the water content. Then, applications to assess hygrothermal behavior of multilayer walls and predict of condensation risk into them were examined.Secondly, a parametric study was achieved on hygrothermal properties of insulation materials. The objective of this second stage was to evaluate sensitivity magnitude of different material properties on hygrothermal behavior of multilayers walls.This study focused on the most influential thermal and hydric properties in hygrothermal transfer model. Thus, thermal conductivity for heat transfer, total moisture permeability and moisture capacity to hydric transfer were selected.Finally, simulation results were analyzed and conclusions were derived on the effect of key parameters on the hygrothermal behavior in the walls and the conditions causing condensation risk to increase.