Innovations in Solid Waste Treatment and Resource Utilization

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 715

Special Issue Editors


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Guest Editor
School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China
Interests: waste/wastewater treatment; anaerobic digestion; bioenergy recovery; resource recycling; anaerobic membrane bioreactor; anammox; waste management
Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba, Aramaki-aza, Aoba-ku, Sendai 980-8579, Miyagi, Japan
Interests: bioplastics pyrolysis; thermal recycling; catalytic degradation; waste-to-energy; polymer conversion

Special Issue Information

Dear Colleagues,

With the rapid expansion of urbanization, agriculture, and industrial production, the generation of solid waste has increased dramatically, posing serious challenges to environmental protection and the sustainable use of resources. Conventional disposal methods, such as landfilling and incineration, not only lead to the loss of potentially valuable materials but also result in the emission of greenhouse gases and hazardous pollutants. To achieve carbon neutrality and promote genuine resource circularity, it is imperative to reconceptualize waste as a resource repository—a source of energy, materials, and chemicals. Through innovative process design and system-level integration, low-carbon, zero-waste, and closed-loop management models must be established to fully harness the resource potential of waste.

This Special Issue focuses on cutting-edge research and technological advancements in the treatment, transformation, management, and reutilization of solid waste. Topics of interest include, but are not limited to the following:

  • Anaerobic digestion;
  • Fermentation of organic waste;
  • Bioenergy production;
  • Nutrient recovery;
  • Waste valorization into high-value products;
  • Pyrolysis;
  • Thermal recycling;
  • Biochar production and application;
  • Synthesis of functional materials;
  • Waste reduction and reuse;
  • Integrated system management;
  • Process modeling and optimization;
  • Life-cycle assessment.

We welcome original research articles and reviews that explore novel processes, strategies and integrated systems contributing to resource‑efficient and low‑carbon solid waste management. Contributions that highlight interdisciplinary approaches and demonstrate scalability or real‑world applications are particularly encouraged.

Dr. Min Ye
Dr. Zhuze Shao
Guest Editors

Manuscript Submission Information

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Keywords

  • waste treatment
  • anaerobic digestion
  • bioenergy recovery
  • resource recycling

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Published Papers (1 paper)

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Research

15 pages, 1299 KB  
Article
Leachate Analysis of Biodried MSW: Case Study of the CWMC Marišćina
by Anita Ptiček Siročić, Dragana Dogančić, Igor Petrović and Nikola Hrnčić
Processes 2026, 14(1), 141; https://doi.org/10.3390/pr14010141 - 31 Dec 2025
Viewed by 488
Abstract
A major factor in worldwide ecological harm is the large quantity of municipal solid waste generated because of rapid industrialization and population growth. Nowadays, there are numerous mechanical, biological, and thermal waste treatment processes that can reduce the amount of landfilled waste. A [...] Read more.
A major factor in worldwide ecological harm is the large quantity of municipal solid waste generated because of rapid industrialization and population growth. Nowadays, there are numerous mechanical, biological, and thermal waste treatment processes that can reduce the amount of landfilled waste. A variety of analytical tests are conducted to evaluate the potential risks that landfills pose to human health and the environment. Among these, laboratory leaching tests are commonly employed to assess the release of specific waste constituents that may become hazardous to the environment. Municipal solid waste (MSW) management poses significant environmental risks due to leachate contamination in bioreactor landfills, where acidic conditions (pH ≈ 5) can mobilize heavy metals. This study evaluates the reliability of leaching tests for biodried reject MSW from CWMC Marišćina, Croatia, by comparing standard EN 12457-1 and EN 12457-2 methods (L/S = 2 and 10 L/kg) with simulations of aerobic degradation using acetic acid (10 g/L) to maintain pH = 5 over 9 days. Waste composition analysis revealed plastics (35%), paper/cardboard (25%), metals (15%), and glass (10%) as dominant fractions. Although the majority of parameters determined through standard leaching tests remain below the maximum permissible limits for non-hazardous waste, simulations under acidic conditions demonstrated substantial increases in eluate concentrations between days 6 and 9: Hg (+1500%), As (+1322%), Pb (+1330%), Ni (+786%), and Cd (+267%), with TDS rising 33%. These results highlight the underestimation of risks by conventional tests, emphasizing the need for pH-dependent methods to predict in situ leachate behavior in MBO-treated waste and support improved EU landfill regulations for enhanced environmental protection. Full article
(This article belongs to the Special Issue Innovations in Solid Waste Treatment and Resource Utilization)
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