Towards a circular economy for stabilized residual from organic municipal solid waste processed at an MBT installation – the potential of SR recycling and recovery

Bernat, Katarzyna; Wojnowska-Baryła, Irena; Kamińska, A.; Zaborowska, Magdalena

doi:10.5004/dwt.2021.27919

Cited by 3 publications

(1 citation statement)

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“…The mechanical component of MBT plants is designed to efficiently recover materials such as plastics, glass, metals, and high-calorific alternative fuel, commonly known as Refuse-Derived Fuel (RDF). Meanwhile, the biological aspect of an MBT facility serves to stabilize the organic fraction of municipal solid waste (OFMSW) that has been mechanically separated from MSW through sieving [18][19][20].…”

Section: Introduction and Problem Statementmentioning

confidence: 99%

Composting and Mechanical Biological Treatment for Reducing Greenhouse Gas Emissions in Bizerte, Tunisia

Mathlouthi,

Trabelsi Ayadi,

Ghorbel Abid

et al. 2024

Sustainability

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This study seeks to develop effective solutions and strategies for waste management in the Tunisian municipality of Bizerte by addressing the urgent need for sustainable waste management practices in light of the global imperative to mitigate climate change. With a specific focus on reducing greenhouse gas emissions, this investigation aligns with Tunisia’s commitment to international agreements, including the Paris Agreement and the Global Methane Pledge. This study begins with an exploration of background information, followed by data collection and waste characterization to determine the current situation and to detect gaps that exist in terms of waste management in Bizerte municipality. Two scenarios are proposed as potential solutions for the municipality. The first examines a green waste composting facility with a 1000-ton yearly capacity, which has been operational since 2020. This study describes the compost production process and evaluates the quality of compost derived from green waste. This approach demonstrates its potential for delivering significant environmental and economic benefits. The second scenario delves into the implementation of a mechanical biological treatment (MBT) plant for sustainable handling of residual waste while contributing to a reduction in the municipality’s overall environmental footprint. Using the Sweet software, version 4.0.2, July 2022. this study quantifies the potential reduction in greenhouse gas emissions resulting from composting to be 3%, while the MBT achieves a reduction of 28%.

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Section: Introduction and Problem Statementmentioning

confidence: 99%

Composting and Mechanical Biological Treatment for Reducing Greenhouse Gas Emissions in Bizerte, Tunisia

Mathlouthi,

Trabelsi Ayadi,

Ghorbel Abid

et al. 2024

Sustainability

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Can the biological stage of a mechanical–biological treatment plant that is designed for mixed municipal solid waste be successfully utilized for effective composting of selectively collected biowaste?

Bernat

Kulikowska²,

Wojnowska‐Baryła³

et al. 2022

Waste Management

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Pre-Treatment of Separately Collected Biowaste as a Way to Increase Methane Production and Digestate Stability

Bernat

Zaborowska

et al. 2023

Energies

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To produce a valuable final product from anaerobic digestion (AD), one of the preferred methods of organic recycling, high quality feedstock must be ensured. In this study, separately collected real biowaste (B) was used, consisting of 90% food waste and 10% green waste. The priority issues of AD are both high methane production (MP) and high organics removal efficiency (as organic matter, OM and dissolved organics, and DCOD), which may be improved after pre-treatment. In this study, the effect of hydrothermal pre-treatment (BHT) and enzymatic additives (BE) on MP and organics removal from biowaste in mesophilic (37 °C) conditions was analyzed. To assess the adequacy of pre-treatment application, biowaste without treatment (BWT) was used. Pre-treatment of biowaste prior to AD affected the maximal MP, the removal effectiveness of both OM and DCOD, and the kinetic parameters of these processes. For BWT, the maximal cumulative MP reached 239.40 ± 1.27 NL/kg OM; the kinetic coefficient of MP (kCH4) and the initial MP rate (rCH4) were 0.32 ± 0.02 d−1 and 76.80 ± 1.10 NL/(kg OM·d), respectively. After hydrothermal pre-treatment, the MP of BHT (253.60 ± 1.83 NL/kg OM) was 6.3% higher than BWT. However, the highest MP was found for BE, 268.20 ± 1.37 NL/kg OM; to compare, it increased by 12.1% and 5.5% with BWT and BHT, respectively. However, the kinetic parameters of MP were highest with BHT:kCH4 0.56 ± 0.02 d−1 vs. 0.32 ± 0.02 d−1 (BWT) and 0.34 ± 0.02 d−1 (BE); rCH4 141.80 ± 0.02 NL/(kg OM·d) (BHT) vs. 76.80 ± 1.10 NL/(kg OM·d) (BWT) and 89.80 ± 0.50 NL/(kg OM·d) (BE). The effectiveness of OM removal was highest with BE, similarly to the MP with the use of an enzymatic additive. The kinetics of OM removal (rOM, kOM) were highest with BHT, similarly to the kinetics of MP (rCH4, kCH4). The highest effectiveness of OM and, consequently, its lowest final content obtained with BE means that the organics were used most efficiently, which, in turn, may result in obtaining a more stable digestive system.

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Towards a circular economy for stabilized residual from organic municipal solid waste processed at an MBT installation – the potential of SR recycling and recovery

Cited by 3 publications

References 50 publications

Composting and Mechanical Biological Treatment for Reducing Greenhouse Gas Emissions in Bizerte, Tunisia

Composting and Mechanical Biological Treatment for Reducing Greenhouse Gas Emissions in Bizerte, Tunisia

Can the biological stage of a mechanical–biological treatment plant that is designed for mixed municipal solid waste be successfully utilized for effective composting of selectively collected biowaste?

Pre-Treatment of Separately Collected Biowaste as a Way to Increase Methane Production and Digestate Stability

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