Green Energy and Environment Laboratory, National Laboratory Astana, Nazarbayev University, Astana, Kazakhstan.
Chemical and Materials Engineering Department, Nazarbayev University, Astana, Kazakhstan.
Waste Manag Res. 2019 Dec;37(12):1271-1281. doi: 10.1177/0734242X19875503. Epub 2019 Oct 11.
This study presents the results of a seasonal municipal solid waste composition campaign, that took place over the period of September 2017 to June 2018 in the capital city of Kazakhstan, Astana. Four sampling campaigns were conducted in order to identify the seasonal variation of municipal solid waste composition, recyclables and energy potential materials, such as combustible fraction, useful for the evaluation of waste-to-energy potential. The combustible fraction was analysed for thermal fuel properties, such as proximate and elemental analyses and gross calorific value. The results over the four different seasons showed that the average recyclable fraction of municipal solid waste on a wet basis of 33.3 wt.% and combustibles fraction was 8.3 wt.%. The largest fraction was the organics (47.2 wt.%), followed by plastic (15.4 wt.%) and paper (12.5 wt.%). Small seasonal variations were observed for organics, paper, plastic and glass fractions. The highest values were found in summer for the organic waste, in spring for paper and plastic and autumn for glass. The recyclables fraction showed an absolute seasonal variation of 5.7% with a peak in the winter season (35.4%) and the combustibles fraction showed a seasonal variation between 8.3 wt.% to 9.4 wt.%. Finally, the average calorific value of the combustible fraction was estimated to be 21.6 MJ kg on a dry basis.
本研究介绍了 2017 年 9 月至 2018 年 6 月在哈萨克斯坦首都阿斯塔纳进行的季节性城市固体废物组成研究的结果。进行了四次采样活动，以确定城市固体废物组成、可回收物和能源潜力材料（如可燃烧部分，对评估废物转化为能源的潜力很有用）的季节性变化。对可燃烧部分进行了热燃料特性分析，例如近似分析和元素分析以及总热值。四个不同季节的结果表明，基于湿基的城市固体废物的平均可回收部分为 33.3wt.%，可燃烧部分为 8.3wt.%。最大的部分是有机物（47.2wt.%），其次是塑料（15.4wt.%）和纸张（12.5wt.%）。有机物、纸张、塑料和玻璃部分的季节性变化较小。有机物在夏季的含量最高，纸张和塑料在春季的含量最高，玻璃在秋季的含量最高。可回收物部分的绝对季节性变化为 5.7%，冬季（35.4%）达到峰值，可燃烧物部分的季节性变化在 8.3wt.%至 9.4wt.%之间。最后，估算可燃烧部分的平均热值为 21.6MJkg（干基）。
