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Characterization of the separately collected organic fraction of municipal solid waste (OFMSW) from rural and urban districts for a one-year period in Germany
Waste Management ( IF 8.1 ) Pub Date : 2021-07-14 , DOI: 10.1016/j.wasman.2021.07.004
Gregor Sailer 1 , Johanna Eichermüller 1 , Jens Poetsch 1 , Sebastian Paczkowski 2 , Stefan Pelz 1 , Hans Oechsner 3 , Joachim Müller 4
Affiliation  

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 CH4 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 CH4 potentials were higher for urban OFMSW (533 ± 22 L/kg vs. 519 ± 26 L/kg).

For both OFMSW types, contents >1000 mg/kg DM 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/kg DM. The determined element concentrations are useful for an improved classification of OFMSW as a biorefinery resource.



中文翻译:

德国农村和城市地区单独收集的城市固体废物有机部分 (OFMSW) 一年的表征

了解材料特性有利于充分利用城市固体废物有机部分 (OFMSW) 的内在利用潜力。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(生物垃圾箱)的理化特性。因此,在一年的时间里对来自同一地点的 22 个农村和 20 个城市 OFMSW 样本进行了分析。除了杂质、干物质 (DM) 和有机干物质 (oDM) 含量等基本特征外,本研究重点分析了 37 种主要、次要和微量元素。此外,计算厌氧消化的化学计量CH 4电位。

基于新鲜质量 (FM) 的 DM 含量在农村 OFMSW 中显着 (p = 0.001) 更高 (32.86 ± 2.35% vs. 30.50 ± 1.75%) 而基于 DM 的 oDM 含量在城市 OFMSW (84.59) 中更高 (p = 0.07) ± 3.90% 与 82.22 ± 4.16%)。农村 OFMSW 中的杂质显着较低(2.83 ± 1.67% DM vs. 5.07 ± 2.71% DM,p = 0.004),而城市 OFMSW 基于 oDM 的 CH 4电位更高(533 ± 22 L/kg vs. 519 ± 26  L /公斤)。

对于两种 OFMSW 类型, 检测到 Ca、K、Si、Na、Al、Fe、Mg、P 和 S 的含量 >1000 mg/kg DM,而 Ti、Mn、Ba、Zn、Sr、Cr、Cu、V、Ni 、Li、Pb 和 B 的测量范围为 1 至 1000 mg/kg  DM。确定的元素浓度有助于将 OFMSW 改进为生物精炼资源的分类。

更新日期:2021-07-14
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