Analyzing the impact of age on waste properties at an open dumpsite in Khulna

IF 5.3 Q2 ENGINEERING, ENVIRONMENTAL
Saptarshi Mondal, Islam M. Rafizul
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Abstract

The rapid growth of the population has led to a significant increase in the amount of municipal solid waste (MSW), posing a burden and concern for our environment. Landfill mining as well as waste to energy could be a solution to this issue, but they require waste composition, particle size, and physiochemical and ultimate analysis are prerequisite requirements. Particle size was assessed through sieve analysis, categorizing MSW into ten different types followed by physiochemical and ultimate analyses. This study aimed to examine how the properties of MSW change with age. Findings showed that fine particles increased with age while larger particles decreased. With aging, certain physical components decreased, while others either increased or stayed constant. Organic content showed a significant decrease of 70.548% for fresh MSW and 0.35% for fifteen-year-old waste whereas plastic content remained almost constant after an increase from fresh MSW. Moisture content and volatile content of MSW reduced with age while fixed carbon and ash content increased with age. Ultimate analysis shows a drop of carbon, hydrogen, and nitrogen while oxygen shows a rise. Calorific value was found a decrease in trend with age indicating that the energy content of MSW reduced with age. A drastic reduction of unit weight was found in this study, dropping from 9.31 kN/m3 to 4.668 kN/m3. This study highlights the overall composition of MSW, the fluctuation in physiochemical analysis with age, and the sieve analysis and particle size distribution. It also displays the unit weight and the age-wise variation of the ultimate analysis. The findings of this study will aid landfill mining and waste to energy by providing comprehensive properties of MSW.
分析年龄对库尔纳露天垃圾场废物特性的影响
人口的快速增长导致城市固体废物(MSW)的数量大幅增加,给我们的环境带来了负担和担忧。垃圾填埋场开采和废物变能源是解决这一问题的方法,但它们需要废物成分、粒度、理化分析和最终分析作为前提条件。粒度通过筛分分析进行评估,将城市固体废物分为十种不同类型,然后进行理化和最终分析。本研究旨在探讨都市固体废物的特性如何随着时间的推移而变化。研究结果表明,随着时间的推移,细颗粒增加,而大颗粒减少。随着时间的推移,某些物理成分会减少,而其他成分则会增加或保持不变。有机物含量显示,新鲜的城市固体废物大幅减少了 70.548%,15 年的垃圾减少了 0.35%,而塑料含量在从新鲜的城市固体废物增加后几乎保持不变。城市固体废物的水分含量和挥发物含量随着时间的推移而减少,而固定碳和灰分含量则随着时间的推移而增加。终极分析表明,碳、氢和氮的含量下降,而氧的含量上升。热值随着龄期的增长呈下降趋势,这表明城市固体废物的能量含量随着龄期的增长而降低。本研究发现单位重量急剧下降,从 9.31 kN/m3 降至 4.668 kN/m3。本研究强调了城市固体废物的总体成分、随时间变化的理化分析波动、筛分分析和粒度分布。它还显示了最终分析的单位重量和随年龄的变化。这项研究的结果将提供城市固体废物的全面特性,从而有助于垃圾填埋场开采和废物变能源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Cleaner Engineering and Technology
Cleaner Engineering and Technology Engineering-Engineering (miscellaneous)
CiteScore
9.80
自引率
0.00%
发文量
218
审稿时长
21 weeks
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