不同填埋龄垃圾降解特性研究

从杭州市固体废弃物处理有限公司天子岭填埋场采集了1~12年填埋龄垃圾,通过对其基本理化性质的分析发现,不同填埋龄垃圾中以类似腐殖质的混合物为主,其次为塑料类;混合类物质含量随垃圾填埋龄的增加而上升。另外,由于填埋场含水率低,pH、TN(总氮)、BDM(生物可降解物)、HE(腐殖质可提取物)等指标在垃圾填埋4年后基本趋于稳定,垃圾进入降解缓慢期。这表明填埋场的传统操作模式不利于垃圾稳定化,开发以渗滤液回灌为特征的生物反应器填埋技术具有现实意义。     

Black limestone used in Lombard architecture

Black limestone samples from the quarries of Varenna (Lecco, I), Cene (Bergamo, I) and Riva di Solto (Bergamo, I) and widely used in Lombard architecture have been studied in terms of mineralogical, petrographic and chemical properties in order to provide a detailed characterisation and allow an unambiguous determination of their provenance. The inorganic and organic fractions have been separated from each other, and investigated using X-ray powder diffraction, atomic absorption, Hg-porosimetry, high performance liquid chromatography, gas chromatography, nuclear magnetic resonance and Fourier transform infrared spectroscopy. The occurrence of specific mineral phases, some binary chemical patterns (Fe/Mn, Zn/Sr, Zn/Co and Na/Cd) and the carbon chain relative molecular masses has proven to be useful markers to characterise unequivocally the materials studied.     

欧盟长期保存项目Planets的体系与特点

简要介绍Planets项目的基本概况,详细描述其在保存计划、内容特征化、保存行为、互操作框架、试验平台等方面的技术实施。Planets项目能够提供长期保存过程中所需的多种工具和服务,推进数字资源长期保存的发展,其很多方面值得借鉴。