University of Applied Forest Sciences Rottenburg, Schadenweilerhof, 72108 Rottenburg, Germany.
University of Göttingen, Faculty of Forest Sciences and Forest Ecology, Department of Forest Work Science and Engineering, Büsgenweg 4, 37077 Göttingen, Germany.
Waste Manag. 2021 Jul 15;131:471-482. doi: 10.1016/j.wasman.2021.07.004. Epub 2021 Jul 14.
Knowledge on material properties is beneficial to fully exploit inherent utilization potentials of the organic fraction of municipal solid waste (OFMSW). The objective of this study was to analyze and compare the physico-chemical characteristics of separately collected OFMSW (biowaste bin) originating in southwestern Germany. Therefore, 22 rural and 20 urban OFMSW samples, each from the same location were analyzed in the course of one year. Next to the basic characteristics such as the impurity, dry matter (DM) and organic dry matter (oDM) contents, this study focused on the analysis of 37 major, minor and trace elements. In addition, stoichiometric CH potentials for the anaerobic digestion were calculated. The fresh mass (FM) based DM contents were significantly (p = 0.001) higher in rural OFMSW (32.86 ± 2.35% vs. 30.50 ± 1.75%) while the DM based oDM content was higher (p = 0.07) in urban OFMSW (84.59 ± 3.90% vs. 82.22 ± 4.16%). The impurities in rural OFMSW were significantly lower (2.83 ± 1.67% DM vs. 5.07 ± 2.71% DM with p = 0.004) while oDM based CH potentials were higher for urban OFMSW (533 ± 22 L/kg vs. 519 ± 26L/kg). For both OFMSW types, contents >1000 mg/kgDM were detected for Ca, K, Si, Na, Al, Fe, Mg, P and S while Ti, Mn, Ba, Zn, Sr, Cr, Cu, V, Ni, Li, Pb and B were measured between 1 and 1000 mg/kgDM. The determined element concentrations are useful for an improved classification of OFMSW as a biorefinery resource.
有关材料特性的知识有助于充分挖掘城市固体废物有机部分（OFMSW）的固有利用潜力。本研究的目的是分析和比较源自德国西南部的单独收集的 OFMSW（生物废物箱）的理化特性。因此，在一年的时间里，对 22 个农村和 20 个城市 OFMSW 样本，每个样本均来自同一地点进行了分析。除了杂质、干物质（DM）和有机干物质（oDM）含量等基本特征外，本研究还重点分析了 37 种主要、次要和痕量元素。此外，还计算了用于厌氧消化的化学计量 CH 潜力。农村 OFMSW 的新鲜质量（FM）基 DM 含量明显（p=0.001）更高（32.86±2.35%比 30.50±1.75%），而城市 OFMSW 的 DM 基 oDM 含量更高（p=0.07）（84.59±3.90%比 82.22±4.16%）。农村 OFMSW 中的杂质明显较低（2.83±1.67%DM 比 5.07±2.71%DM，p=0.004），而城市 OFMSW 的 oDM 基 CH 潜力更高（533±22 L/kg 比 519±26 L/kg）。对于这两种类型的 OFMSW，Ca、K、Si、Na、Al、Fe、Mg、P 和 S 的含量均超过 1000mg/kgDM，而 Ti、Mn、Ba、Zn、Sr、Cr、Cu、V、Ni、Li、Pb 和 B 的含量则在 1 至 1000mg/kgDM 之间。所测定的元素浓度可用于改进 OFMSW 作为生物炼制资源的分类。
