How does separate collection efficiency influence biological stability of commingled Italian municipal solid waste?

2021 ◽  
Vol 19 ◽  
pp. 100355
Author(s):  
Paolo S. Calabrò ◽  
Filippo Fazzino ◽  
Domenica Pangallo
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Collection Efficiency ◽  
Biological Stability

scholarly journals Analysis of the Effect of Separate Collection on the Composition of Mixed Municipal Solid Waste in Italy

2020 ◽  
Vol 14 (1) ◽  
pp. 63-70
Author(s):  
Paolo S. Calabrò ◽  
Domenica Pangallo
Keyword(s):  
Regression Analysis ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Collection Efficiency ◽  
Value Set ◽  
Target Value ◽  
Italian Regions

Separate collection of municipal solid waste (MSW) is mandatory in Italy, and an increasingly higher standard of efficiency is applied; in fact, the target value set by regulation is 65%. In the last 20 years, separate collection efficiency increased from 9.4% with 80% national MSW landfilled, and only one region was over 25% separate collection to 58.1% with 22% national MSW landfilled and 12 of 20 regions over 55% separate collection. However, significant differences are present in the three Italian macro regions (North, Center and South). This paper analyzes the composition of waste carried in most Italian regions to evaluate the effect of separate collection on the composition of mixed municipal solid waste (unsorted). Moreover, a regression analysis on the same data allows to assess this latter as a function of separate collection efficiency.

Fluorescence-based rapid assessment of the biological stability of landfilled municipal solid waste

2012 ◽  
Vol 110 ◽  
pp. 174-183 ◽  
Author(s):  
Huayong Wu ◽  
Zeyu Zhou ◽  
Yaxin Zhang ◽  
Tan Chen ◽  
Hongtao Wang ◽  
...  
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Rapid Assessment ◽  
Biological Stability

scholarly journals Selective Collection Quality Index for Municipal Solid Waste Management

2018 ◽  
Vol 10 (1) ◽  
pp. 257 ◽  
Author(s):  
Elena Rada ◽  
Claudio Zatelli ◽  
Lucian Cioca ◽  
Vincenzo Torretta
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Quality Index ◽  
Solid Waste Management ◽  
Collection Efficiency ◽  
Municipal Solid Waste Management ◽  
Great Ability ◽  
Local Problems ◽  
Waste Separation ◽  
Selective Collection

Trentino (an Italian Province located in the northern part of the country) is equipped with a management system of municipal solid waste collection at the forefront. Among the most positive aspects, there is a great ability for waste separation at the source and a consequent low production of residual municipal solid waste for disposal. Latest data show a gross efficiency of selective collection that has recently reached 80%, one of the highest values in Italy. This study analyzed the “Trentino system” to identify the main elements that have been at the base of the current efficient model. This provided an opportunity to propose a selective collection quality index (SCQI), including collection efficiency for each fraction, method of collection, quality of the collected materials, presence of the punctual tariff and tourist incidence. A period relevant for the transition of the collection system to the recent one was chosen for the demonstrative adoption of the proposed indicators in order to determine the potential of the index adoption. Results of the analysis of this case study were obtained in a quantitative form thanks to the sub-parameters that characterize the proposed index. This allowed selected collection decision makers to focus intently on a territory to find criticalities to be solved. For instance, the use of the index and its sub-indicators in the case of Trentino identified and comparatively quantified the local problems resulting from the presence of a large museum in a small town, tourism peaks in some valleys, and a delay in the punctual tariff adoption. The index has been proposed with the aim to make available an integrated tool to analyze other areas in Italy and abroad.

scholarly journals THE CURRENT STATUS AND STEPS TOWARDS SUSTAINABLE WASTE MANAGEMENT IN THE DEVELOPING COUNTRIES

2019 ◽  
Vol 3 (1) ◽  
pp. 47
Author(s):  
Muhammad Waqas
Keyword(s):  
Developing Countries ◽  
Waste Management ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Management Practices ◽  
Collection Efficiency ◽  
Anthropogenic Activities ◽  
Developed Countries ◽  
Current Status ◽  
Material Recovery

The increasing anthropogenic activities as a result of significant growth in population, urbanization, and industrialization has resulted in a tremendous amount of municipal solid waste (MSW). The municipal authorities are under extreme pressure from the epidemiological evidence towards human and environment as a result of injudicious waste disposal to landfills without any material recovery. In this article, the current status and limitations in treating MSW by the developing countries have been overviewed with a case study from Peshawar-Pakistan. The daily waste production in Peshawar city is about 650.8 tons with 0.4 kg/capita/day. Among the total waste, food waste contributes 14.3% fallowed by plastic waste (4%), paper (2.7%), glass (1.2%), wood (1.1%) and metals/rubber (0.6%). The waste collection efficiency is very low and about 40% of waste are collected whereas 60% of the waste remains in streets or at collection points. Currently there well-organized and specialized waste management practices such as composting, incineration, gasification, pyrolysis, biological treatment, and recycling for treating waste according to environmental deliberation. The directives of the developed countries had strictly imposed the regulations to increase the waste recycling and material recovery whereas in the developing countries the lack of proper legislation, planning, awareness regarding waste reduction has worsened the municipal solid waste-related problems. Moreover, in this article, an attempt has been made towards various important steps that need to incorporate in formulating the strategy for sustainable MSW management along with various aspects for their assessment in term of their sustainability in the developing countries.

scholarly journals The Evaluation System of the Sustainable Development of Municipal Solid Waste Landfills and Its Application

2021 ◽  
Vol 13 (3) ◽  
pp. 1150
Author(s):  
Hailong Liu ◽  
Xiang Luo ◽  
Xingyao Jiang ◽  
Chunyi Cui ◽  
Zhen Huyan
Keyword(s):  
Sustainable Development ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Evaluation System ◽  
Collection Efficiency ◽  
Landfill Gas ◽  
Hydrolysis Rate ◽  
The Sustainable Development ◽  
Stabilization Process ◽  
The Evaluation System

Improving the understanding of the stabilization process is of great significance to guide the sustainable development of municipal solid waste (MSW) landfills. An evaluation system of the stabilization process of MSW landfills has been established. The indices of the evaluation system involve the degradation degree of MSW, the release of landfill gas production potential, and the settlement of landfills. Based on the biochemical-consolidation-solute migration coupled model, an evaluation method of the MSW landfill stabilization process is proposed by combining field tests with numerical simulation. The stabilization process of the Jiangcungou landfill in China is investigated by using the proposed method. The analyzed results show that the stabilization process of high kitchen waste content landfills can be divided into three stages, which is different from the stabilization process of landfills in developed countries. For the Jiangcungou landfill, the ratio of cellulose to lignin in MSW decreases rapidly during the fast degradation stage when obvious settlement occurs. During the slow degradation stage, the hydrolysis rate is slow and settlement develops slowly. When the landfill reaches the stabilization stage, the ratio of cellulose to lignin of MSW changes very slowly; most of the landfill gas potential has been released; the settlement stabilization is completed basically. The change processes of the three evaluation indices are different, of which the degradation stabilization index is the main one. According to the findings above, leachate recirculation is recommended to adjust the degradation environment in the landfill, which can be helpful to avoid acidification at the fast degradation stage. Temporary cover is suggested to improve landfill gas collection efficiency at the beginning of the stable methanogenic stage. The landfill site closure should be operated when the settlement rate is low.

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