The preparation and evaluation mechanism of mesoporous spherical silica/porous carbon-filled polypropylene composites obtained from coal gasification fine slag

Environmental Science and Pollution Research - Coal gasification fine slag is a by-product of the entrained-flow gasifier, which has caused some environmental pollution. Through acid dissolution...     

“中国生态经济建设·2010太原论坛”五大成果

"中国生态经济建设·2010太原论坛"围绕"发展绿色经济,推进绿色发展"主题,取得了五大成果:分享太原市绿色转型发展经验、关于"十二五"循环经济发展思路、企业实现绿色转型的紧迫性、构建适应生态文明建设需要的大战略及低碳经济的发展。     

燃煤催化剂的废弃物资源开发

介绍了燃煤催化剂的成份，说明其废弃物资源的丰富性，指出开发过程中应注意的事项。     

天然气燃烧对厨房空气质量的影响

为了解北京市天然气燃烧烟气对厨房空气质量的综合影响,随机选取北京市城区194户家庭厨房作为研究场所,对天然气燃烧后厨房空气中的二氧化碳、一氧化碳和氮氧化物进行监测,分析了天然气燃烧对厨房空气质量的影响状况.同时,针对通风条件、季节差异等因素对空气质量的影响进行了研究.     

苦草对不同浓度氮净化效果及其形态转化规律

为研究不同营养程度下水生植物对污染物的净化效果,选择长江中下游河流和湖泊水体中典型沉水植物苦草作为研究对象,在2006-09-07～2006-09-22期间开展了7种氮浓度条件下,苦草对水体氮的净化效应及氮在植物体内累积分布规律研究,并分析了水体中氮形态的转化特征.结果表明,试验期内苦草在氮浓度低于60.0 mg/L范围内表现为对水体中氮较强的净化作用,且对总氮的净化效果具有相似的规律性.但是当水体氮浓度大于80.0 mg/L时,苦草对水体氮净化的贡献无明显的规律性.氮在植物体内的累积与水体中氮浓度相关,但其在地下部和地上部的分配规律与浓度的差异无关.水体中氮的形态转换与总氮浓度相关,水中氮浓度低于20.0 mg/L时,氨氮浓度迅速降低,但随着氮浓度的增加,氨氮所占比例明显增大,表明苦草对不同氮浓度条件氮净化具有明显的差异和影响.     

Sustainable reuse of rice residues as feedstocks in vermicomposting for organic fertilizer production

Over the past decade, rice (Oryza sativa or Oryza glaberrima) cultivation has increased in many rice-growing countries due to the increasing export demand and population growth and led to a copious amount of rice residues, consisting mainly of rice straw (RS) and rice husk (RH), being generated during and after harvesting. In this study, Eudrilus eugeniae was used to decompose rice residues alone and rice residues amended with cow dung (CD) for bio-transformation of wastes into organic fertilizer. Generally, the final vermicomposts showed increases in macronutrients, namely, calcium (11.4–34.2 %), magnesium (1.3–40.8 %), phosphorus (1.2–57.3 %), and potassium (1.1–345.6 %) and a decrease in C/N ratio (26.8–80.0 %) as well as increases in heavy metal content for iron (17–108 %), copper (14–120 %), and manganese (6–60 %) after 60 days of vermicomposting. RS as a feedstock was observed to support healthier growth and reproduction of earthworms as compared to RH, with maximum adult worm biomass of 0.66 g/worm (RS) at 60 days, 31 cocoons (1RS:2CD), and 23 hatchlings (1RS:1CD). Vermicomposting of RS yielded better results than RH among all of the treatments investigated. RS that was mixed with two parts of CD (1RS:2CD) showed the best combination of nutrient results as well as the growth of E. eugeniae. In conclusion, vermicomposting could be used as a green technology to bio-convert rice residues into nutrient-rich organic fertilizers if the residues are mixed with CD in the appropriate ratio.     

Bird's‐eye view of the environmental attitude types in the sustainable consumption context

Environmental attitudes are considered to be important factors that influence sustainable consumption. Typically, attitudes fall into two main types: a general environmental attitude (GEA) and a specific environmental attitude (SEA). This study found that the effect of the SEA is stronger than the GEA in regard to sustainable consumption behavior. Also, when analyzing the purchasing behavior of green products, the SEA is a more appropriate and consistent predictor of behavior than the GEA. The study suggests a more operationalized and salient definition of the intended meaning of the term “environmental attitude,” and also advises researchers and marketing professionals to use a framework that contains both types of environmental attitudes in order to better understand what drives the attitude–behavior gap in green consumer behavior.     

三层复合板的r值研究

通过拉伸实验测试了不锈钢 /铝合金 /不锈钢三层复合板的厚向异性系数r,并分析了扩散退火对r值的影响及r值对板材成形性能的影响。分析表明 :扩散退火会降低r值和提高n值。用平均r值和rmin 来判断拉延危险断面的抗拉强度其误差在 6 %左右。     

长江源区浮游植物群落特征研究

为研究长江源区浮游植物群落特征,作者于2017年5月初、8月初和9月底对长江源区干流及其支流浮游植物进行了调查。结果表明:共记录浮游植物8门175种,其中硅藻门、绿藻门和蓝藻门分别占总种类数的57.1%、21.1%和16.6%;舟形藻(Navicula sp.)、桥弯藻(Cymbella sp.)、针杆藻(Synedra sp.)、等片藻(Diatoma sp.)、异极藻(Gomphonema sp.)、曲壳藻(Achnanthes sp.)等河流型硅藻为长江源区优势种。密度介于5.3×10~4～216.8×104cells/L,平均密度为67.2×10~4cells/L,整体呈现支流高于干流的趋势。浮游植物密度、Shannon-Wiener多样性指数和Margalef指数显示长江源区整体水质良好。Pearson相关性和RDA分析表明总氮是影响长江源区浮游植物分布的主要环境因子。该研究对长江源区水生态保护提供重要的理论依据和数据支撑。