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Innovative Technology for Waste Recycling: Carbon Footprint Analysis and Resource Efficiency

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Waste and Recycling".

Deadline for manuscript submissions: 30 April 2027 | Viewed by 335

Editors


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Guest Editor
Department of Production Engineering, Faculty of Materials Science, Silesian University of Technology, Krasinskiego 8, 40-019 Katowice, Poland
Interests: research determining the influence of selected factors on the evaporation rate of metals from alloys; development of process assumptions enabling the use of waste carbon-containing materials and biomass in selected recycling technologies, forming the basis for industry transformation
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Faculty of Materials Engineering and Industrial Digitalization, Silesian University of Technology, Katowice, Poland
Interests: recycling; waste management; green lean; production symbioses

Special Issue Information

Dear Colleagues,

This Special Issue will focus on innovative technologies for waste recycling, integrating carbon footprint analysis and resource efficiency evaluation to tackle the escalating global challenges of waste management amid the dual goals of carbon neutrality and circular economy development. With the rapid expansion of industrial production, urbanization, and consumption, the generation of diverse waste streams—including electronic waste, industrial solid waste, construction and demolition debris, and polymer-based consumer waste—has reached unprecedented levels. These wastes not only pose severe environmental risks if mismanaged, but also contain substantial valuable resources, the recovery of which is critical to reducing reliance on primary raw material extraction and mitigating ecological degradation.

The Special Issue solicits cutting-edge research spanning a broad spectrum of waste recycling technologies, including mechanical separation, chemical recycling, pyrolysis, bioconversion, intelligent sorting systems, and low-temperature embrittlement. It will prioritize studies that validate the performance of these innovative approaches in enhancing resource recovery efficiency, minimizing secondary pollution, and adapting to the complex composition of mixed-waste streams. Emphasizing standardized carbon footprint accounting, in line with IPCC guidelines and ISO 14064 standards, this Special Issue encourages systematic analyses of carbon emissions across the entire waste recycling value chain, from collection and pretreatment to material separation, regeneration, and end-of-life disposal, with a focus on proposing data-driven low-carbon optimization strategies.

Furthermore, this Special Issue will center on resource efficiency evaluation, exploring methodologies that can maximize the high-value utilization of recycled materials (e.g., metals, polymers, rare earth elements, and construction aggregates) and quantify the environmental and economic benefits of circular resource flows. The collected contributions will provide a robust theoretical foundation and practical roadmap for the waste recycling industry’s green and low-carbon transformation, accelerate the industrialization of innovative recycling technologies, and contribute significantly to the establishment of a sustainable circular economy system and the achievement of global carbon reduction targets.

Prof. Dr. Jerzy Łabaj
Dr. Małgorzata Hordyńska
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Sustainability is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • waste recycling
  • innovative technologies
  • carbon footprint analysis
  • resource efficiency
  • circular economy

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Published Papers (1 paper)

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Research

11 pages, 13232 KB  
Article
Gate-to-Gate Benchmarking of Electricity Use and Electricity-Related CO2 Emissions in Mechanical Cable Recycling: A Descriptive Industrial Case Report from Poland
by Małgorzata Hordyńska, Jerzy Łabaj, Piotr Madej, Monika Michalska, Anna Stasiuk-Piekarska and Jacek Zatoński
Sustainability 2026, 18(15), 7956; https://doi.org/10.3390/su18157956 - 5 Aug 2026
Viewed by 138
Abstract
Cable scrap is a high-grade secondary copper resource, but transparent plant-scale evidence on the operational energy and emissions performance of mechanical separation lines remains limited. This descriptive industrial case report presents a non-replicated comparison of complete operating records for the former and newly [...] Read more.
Cable scrap is a high-grade secondary copper resource, but transparent plant-scale evidence on the operational energy and emissions performance of mechanical separation lines remains limited. This descriptive industrial case report presents a non-replicated comparison of complete operating records for the former and newly implemented cable-recycling lines at MERCURY HM in Bielsko-Biała, Poland, for June 2022 and June 2024, respectively. Because each configuration is represented by one aggregate month, the comparison is descriptive and cannot support causal attribution or inferential statistical testing. The assessment applies a gate-to-gate boundary and quantifies location-based Scope 2 CO2 emissions from purchased electricity only; Scope 1 emissions, upstream and downstream Scope 3 emissions, equipment manufacture, transport, facility utilities, maintenance, and downstream metallurgical refining are outside the boundary. For consistent benchmarking, both months were recalculated using the same KOBiZE end-user electricity factor of 685 kg CO2/MWh. The functional units were one tonne of processed cable and one tonne of recovered copper. In the observed months, processed mass was 168 Mg for the former line and 288 Mg for the new line, while monthly electricity consumption was 30,000 and 23,000 kWh, respectively. Specific electricity consumption was 55.3% lower per tonne of cable and 55.8% lower per tonne of recovered copper in the June 2024 dataset; the corresponding electricity-related emission intensities were 122.3 versus 54.7 kg CO2/Mg of cable and 312.0 versus 138.0 kg CO2/Mg of recovered copper. Observed throughput was 0.6 versus 1.2 Mg/h, nominal capacity was 0.7 versus 2.25 Mg/h, and four samples of the high-purity copper product from the new line contained 99.48 ± 0.20% Cu. A scenario analysis for a cable copper content of 39–42% produced emission intensities of 297–320 kg CO2/Mg Cu for the former line and 131–142 kg CO2/Mg Cu for the new line. The results provide a transparent plant-specific sustainability-relevant benchmark, not a causal estimate of technology performance. Replicated monthly or batch-level data are required to test whether the observed differences persist after controlling for feedstock, ambient, operational, and workforce-related confounders. Full article
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