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Sustainable Reuse of Waste towards Circular Economy

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Economic and Business Aspects of Sustainability".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 5456

Special Issue Editors


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Guest Editor
Department of Engineering, University of Palermo, 90128 Palermo, Italy
Interests: facility layout problem; logistics; supply chain management; industrial process optimization; warehouse management
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Engineering, Università degli Studi di Palermo, Viale delle Scienze, Building 8, 90128 Palermo, Italy
Interests: plant layout; occupational health and safety (OHS); industrial risk; maintenance
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Engineering, Università degli Studi di Messina, Contrada di Dio, 98166 Messina, Italy
Interests: industrial systems engineering; project management; analysis and design of industrial plants; green supply chain management
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The high living standards and population density have drastically increased the production of waste in the last few years. As a consequence, governments, companies and researchers are asked more and more to face numerous environmentally sustainable challenges, moving towards preserving resources and reusing and recycling waste. In this regard, switching from the linear model of the economy to the circular one is fundamental to developing efficient waste management processes, according to the European Commission strategies.

Despite the increasing interest of researchers, practitioners and authorities in the aforementioned issues, further efforts are still needed to find technological and economically feasible solutions to give waste materials a second useful life by reusing and recycling. Besides technical barriers, moving towards the circular economy requires new strategies and a fundamental redesign of service and products offerings, often entailing holistic adaptations in companies’ business models. In this perspective, digital technologies of Industry 4.0 may surely support the implementation of circular economy principles by enabling new business models and the redesign of value chains, products, and consumption patterns. In fact, Industry 4.0 is a manufacturing revolution embedded in a larger economic context, defined as circular, where waste gains new value by the improvement of the production systems and the redefinition of supply chains while reducing the resources consumption and the overall environmental impact.

This Special Issue calls for papers focused on the development of new uses for recycled materials (i.e., construction and demolition waste, plastics and polymers, food waste, etc.). Studies on energy efficiency and industrial solutions are also welcome. Contributions may include empirical researches, case studies, comparative and theoretical studies. Possible topics of interest include, but are not limited to:

  • Complexity, challenges, and risks in a circular economy;
  • Circular economy, social impact and digitalization;
  • The impact of 4.0 technologies in waste management;
  • Reuse and recycling of wastes;
  • Bio-based materials, bio-architecture, biomass.

Prof. Dr. Giada La Scalia
Dr. Concetta Manuela La Fata
Dr. Antonio Giallanza
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 100 words) can be sent to the Editorial Office for announcement on this website.

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-blind 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 management
  • recycling and recovery
  • circular economy
  • sustainable strategies and policies
  • resources consumption

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Published Papers (2 papers)

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Research

16 pages, 268 KiB  
Article
Recycling Agricultural Waste to Enhance Sustainable Greenhouse Agriculture: Analyzing the Cost-Effectiveness and Agronomic Benefits of Bokashi and Biochar Byproducts as Soil Amendments in Citrus Nursery Production
by Valeria Lavagi, Jonathan Kaplan, Georgios Vidalakis, Michelle Ortiz, Michael V. Rodriguez, Madison Amador, Francesca Hopkins, Samantha Ying and Deborah Pagliaccia
Sustainability 2024, 16(14), 6070; https://doi.org/10.3390/su16146070 - 16 Jul 2024
Viewed by 1458
Abstract
Applying bokashi (Bok) at 10% volume/volume (v/v), biochar (BC) at 10% v/v, and their combination (Bok_BC) as soil amendments significantly enhances citrus nursery production, improving plant growth and soil health, alongside offering notable economic benefits. Our [...] Read more.
Applying bokashi (Bok) at 10% volume/volume (v/v), biochar (BC) at 10% v/v, and their combination (Bok_BC) as soil amendments significantly enhances citrus nursery production, improving plant growth and soil health, alongside offering notable economic benefits. Our greenhouse experiment evaluated these treatments across two fertilizer doses, at half (700 μS/cm) and full (1400 μS/cm) electrical conductivity (EC) levels, compared to a control mix, demonstrating improved nutrient availability, water retention, growth rates, and potential for carbon sequestration. Based on the results of this experiment, a cost–benefit analysis was performed; the BC treatment yielded substantial savings, particularly in large nurseries where BC at 700 μS/cm electrical conductivity (EC) saved USD 1356.38 per day and the same treatment at 1400 μS/cm EC saved USD 1857.53. These savings stem from increased nutrient contents (N, P, and K) and improved water retention, reducing irrigation; shortened growth cycles due to enhanced growth rates were observed, indirectly suggesting reduced electricity costs for greenhouse operations. Additionally, the increased carbon content within the soil points toward long-term benefits from carbon sequestration, further contributing to the sustainability and economic viability of these practices. These findings highlight the economic advantage of incorporating Bok and BC into soil mixes, providing a cost-effective strategy for enhancing greenhouse agriculture sustainability. Full article
(This article belongs to the Special Issue Sustainable Reuse of Waste towards Circular Economy)
14 pages, 1643 KiB  
Article
Economic and Environmental Assessment of Biomass Power Plants in Southern Italy
by Giada La Scalia, Luca Adelfio, Concetta Manuela La Fata and Rosa Micale
Sustainability 2022, 14(15), 9676; https://doi.org/10.3390/su14159676 - 5 Aug 2022
Cited by 9 | Viewed by 2537
Abstract
In 2019, Europe adopted the New Green Deal as a strategic plan to become a competitive, resource-efficient, and driven economy by reducing its gas emissions and carbon footprint. Due the COVID-19 pandemic, this strategic plan was recently updated to expedite the green transition [...] Read more.
In 2019, Europe adopted the New Green Deal as a strategic plan to become a competitive, resource-efficient, and driven economy by reducing its gas emissions and carbon footprint. Due the COVID-19 pandemic, this strategic plan was recently updated to expedite the green transition of European industries. Therefore, the present paper deals with the problem of deciding an appropriate size for a biomass plant that directly produces electric energy by means of two different conversion processes: combustion and gasification. After an initial estimation of the energy potential in western Sicily, GIS data of biomass growth were used to identify the appropriate size for the power plants under investigation. The economic feasibility of biomass utilization was evaluated over a capacity range of 10 to 30 MW, considering total capital investments, revenues from energy sales, and total operating costs. Moreover, the effect of variations on incentive prices was analyzed by means of a sensitivity analysis. Comparing the different plant solutions considered, the environmental sustainability was also analyzed using the life cycle assessment (LCA) approach. The results showed that the combustion solution had a higher profitability and a lower environmental impact for each plant size. The obtained results also demonstrated that providing power from residual biomass in small agricultural communities would significantly reduce their environmental impacts while improving the economic feasibility of their waste management practices. Full article
(This article belongs to the Special Issue Sustainable Reuse of Waste towards Circular Economy)
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