Recovery of glass contained in the heavy residual fraction of Portuguese mechanical Biological Treatment Plants

Dias, Nilmara; Belo, Nuno; Máximo, Angela; Carvalho, M. Teresa

doi:10.1016/j.jclepro.2014.05.028

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…We found that the final product of aerobic stabilisation of the MMWSF showed the presence of improper materials, mainly paper, plastic, and glass. Dias et al [13] characterised residual material after aerobic stabilisation from 5 different MBT installations, and found that glass and stones predominated, constituting 32-67% and 10-26%, respectively. Some identified materials, such as plastic, metal, ceramic, and brick, were present in small percentages, constituting from 2 to 13% of the residual material.…”

Section: Resultsmentioning

confidence: 99%

Changes in Main Parameters of Biological Stabilisation of Municipal Waste from a Full-Scale Mechanical-Biological Treatment (MBT) Installation

Koc-Jurczyk

2023

Architecture, Civil Engineering, Environment

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Poland's mixed municipal waste management system has been based on mechanical-biological treatment (MBT). One of the MBT processes is the biological stabilisation of fractions of less than 80 mm. The final product after biological stabilisation is a stabiliser that, once the conditions required by law are met, can be landfilled. The stabilizer must meet the following requirements: the loss of ignition (LOI) of the stabiliser is less than 35% DM, the organic carbon content is less than 20% DM and the AT4 value (aerobic 4-day respiration test) value is less than 10 mgO2/g DM. The study aimed to analyse the changes that occurred during the first 4 weeks of biological processing of the fraction of less than 80 mm of mixed municipal waste. The bioreactor feedstock consisted of 41.7% organic fraction (OF), the LOI was 32.3%, and the AT4 value was 45.7 mgO2/g DM. During biological processing, at 4 weeks, the loss of OF in the total weight of the waste was found to be 22.6%, the losses after roasting decreased by almost 90% and the value of AT4 was 6.6 mgO2/g DM. This means that the stabiliser already after 4 weeks, according to the law, could be sent to a landfill.

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Section: Resultsmentioning

confidence: 99%

Changes in Main Parameters of Biological Stabilisation of Municipal Waste from a Full-Scale Mechanical-Biological Treatment (MBT) Installation

Koc-Jurczyk

2023

Architecture, Civil Engineering, Environment

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“…The authors found that the final product of aerobic stabilization of the organic fraction mechanically selected from rMSW showed presence of improper materials, mainly paper, plastic and glass. Dias et al [33,34] characterized residual material after aerobic stabilization from 5 different MBT plants, and found that glass and stones predominated, constituting 32-67% and 10-26%, respectively. Some identified materials, such as plastic, metal, ceramic and brick, were present in small percentages, constituting from 2 to 13% of the residual material.…”

Section: Contaminants Their Composition and The Contamination Ratio (Cr) In The <80 MM Fraction And Sr In Each Seasonmentioning

confidence: 99%

“…However, there are few studies that have shown new directions in SR utilization. For example, preliminary studies by Dias et al [33,34] showed that it is necessary to make an effort to develop and improve glass recovery from the residual material from the biological stage of MBT plants. The share of glass compacted in this material can be as large as 75-85%.…”

Section: Potential Utilisation Of the Srmentioning

confidence: 99%

Insight into the Composition of the Stabilized Residual from a Full-Scale Mechanical-Biological Treatment (MBT) Plant in Terms of the Potential Recycling and Recovery of Its Contaminants

et al. 2021

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There is a lack of knowledge about the composition and particle size distribution of the <80 mm fraction mechanically separated from residual municipal solid waste (rMSW) and the stabilized residual (SR) after aerobic stabilization in a full-scale MBT plant. Therefore, the composition of the particle size fractions (>60 mm, 60–40 mm, 40–10 mm) of the <80 mm fraction and SR, collected in all seasons (summer (S), autumn (A), winter (W), spring (Sp)), was determined. Biodegradable waste (vegetable waste, other organic waste, paper, cardboard) constituted from 44.1% (A) to 54.3% (Sp) of the <80 mm fraction and it decreased to 8.5% (W) to 17.1% (S) in the SR, after effective biodegradation. In SR, the smaller particle size fractions (up to 40 mm) predominated. The main contaminants in SR were plastic, glass, metal, and other waste. Hierarchical clustering indicated that the composition of the particle size fractions of SR was more similar across four seasons than that of the <80 mm fraction. After stabilization and separation, the share of contaminants increased in the SR size fractions, which means that their recovery before landfilling may be profitable. This suggests a new direction in waste management that would be consistent with the principles of a circular economy, in which a waste product, like SR, which previously could only be landfilled, becomes a source of secondary materials.

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“…This mineral fraction is further processed mechanically in another external installation and then recycled, e.g., for road construction [ 10 ]. Research is being conducted regarding the finding of possibilities of using the final products of MBT systems, including separated material fractions from CLO [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Potential of Mineral Fraction in Compost-Like-Output, Methods of Its Obtaining and the Possibility of Using It in the Context of Circular Economy

Połomka¹,

Jędrczak

2020

Materials

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Most of the systems for the mechanical and biological treatment of waste used in Poland send the 0–80 mm fraction separated from the municipal waste stream, after biostabilization, entirely to a landfill. Such action is not in line with the adopted EU strategy focused on waste management in the circular cycle. The purpose of this work was to assess the technical feasibility of recovering the mineral fractions contained in compost-like-output (CLO) on the proprietary technological line designed for glass recovery. The research was launched in January 2019, and lasted for a subsequent 12 months. In the article, the amounts of mineral fractions possible to be separated from CLO are presented, as well as their morphological composition and selected properties being determined. The processing of CLO on the line allowed to recover on average 69.4 ± 7.0% of the glass. This product was accepted by glass recycling plants. Mineral fractions constituting waste from the glass separation process were tested for their use in winter road maintenance. Tests were also carried out confirming the possibility of using selected mineral fractions (0–10 mm) from CLO to obtain a waste cement mix useful for constructing road foundations using a standard amount of cement.

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Recovery of glass contained in the heavy residual fraction of Portuguese mechanical Biological Treatment Plants

Cited by 12 publications

References 6 publications

Changes in Main Parameters of Biological Stabilisation of Municipal Waste from a Full-Scale Mechanical-Biological Treatment (MBT) Installation

Changes in Main Parameters of Biological Stabilisation of Municipal Waste from a Full-Scale Mechanical-Biological Treatment (MBT) Installation

Insight into the Composition of the Stabilized Residual from a Full-Scale Mechanical-Biological Treatment (MBT) Plant in Terms of the Potential Recycling and Recovery of Its Contaminants

Potential of Mineral Fraction in Compost-Like-Output, Methods of Its Obtaining and the Possibility of Using It in the Context of Circular Economy

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