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Recycling, Volume 11, Issue 3

2026 March - 21 articles

Cover Story: In glass recycling, color is critical. From separate collection to recycling plants, precise color sorting determines both the quality and market value of cullet. The proposed approach introduces an advanced solution combining visible–near infrared hyperspectral imaging with machine learning to automatically classify post-consumer glass into five color categories. A hierarchical PLS-DA model, integrated with object-based analysis, enables highly accurate recognition. The system achieves outstanding sensitivity and specificity, demonstrating strong robustness and predictive power, further confirmed on independent datasets. By enhancing sorting precision and efficiency, this approach supports higher-quality material recovery and advances the transition toward more sustainable, circular glass production systems. View this paper
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Articles (21)

  • Article
  • Open Access
1 Citations
2,053 Views
53 Pages

Integrating Lean Construction (LC), the Circular Economy (CE), and Construction 5.0 (C5.0) remains challenging in emerging delivery contexts. This difficulty increases when procurement routines determine which practices become enforceable across tend...

  • Article
  • Open Access
2 Citations
4,921 Views
34 Pages

Indonesia, as a major global textile exporter, faces substantial sustainability challenges due to its linear production model, which generates massive volumes of post-industrial polyester waste (PIPW). However, reliable data and recycling pathways re...

(This article belongs to the Special Issue Advancing the Circular Economy: A Life Cycle Perspective on Waste Valorization)
  • Article
  • Open Access
1,105 Views
16 Pages

Aerobic and Energy-Recovery Treatment Processes of Sanitary Waste to Reduce End-of-Life Carbon Emissions

  • Gidalti García Cabrera,
  • José Aurelio Sosa Olivier,
  • Guadalupe Hernández Gerónimo,
  • José Ramón Laines Canepa and ,
  • Alejandro Padilla Rivera,
  • Gabriel Núñez-Nogueira and
  • María del Carmen Cuevas Díaz
  • + 2 authors+ 0 author

Greenhouse gas (GHG) emissions from sanitary waste (SW) are not usually quantified in institutional inventories, which limits the ability to assess its management and associated carbon footprint. This study establishes emission factors (EF) for SW ge...

  • Article
  • Open Access
2 Citations
2,647 Views
21 Pages

Delamination of Aluminium Current Collectors from Spent Lithium-Ion Battery Cathodes Using Room-Temperature Organic Acid-Assisted Ultrasonication

  • Tendai Tawonezvi,
  • Anele Sinto,
  • Mihle N. Qhina,
  • Dorcas Zide and ,
  • Emihle Mlotha and
  • Bernard J. Bladergroen
  • + 1 author+ 0 author

The strong adhesion between cathode materials and aluminium (Al) foil substrates presents a significant challenge in the recycling of spent lithium-ion batteries (LiBs). Conventionally, high temperatures and high concentrations of costly organic solv...

  • Article
  • Open Access
2 Citations
2,091 Views
20 Pages

Recovery of Valuable Metals from Spent Lithium-Ion Batteries by Combining Reduction Roasting and Selective Leaching

  • Ruijiao Zhai,
  • Kui Huang,
  • Shanjin Mao,
  • Rugui Li and ,
  • Haili Dong and
  • Xi Zhai
  • + 1 author+ 0 author

Amid growing environmental pressure and increasing demand for resource sustainability, the efficient recovery of valuable metals from spent lithium-ion batteries (LIBs) has become a critical challenge in the field of resource recycling. Therefore, a...

(This article belongs to the Topic Waste Management for Recycling and Environmental Protection)
  • Article
  • Open Access
845 Views
16 Pages

Investigations on the Effects of Granite Sawdust on the Pore Structure of Dry-Mixed Mortar and Its Mechanical Properties

  • Zhiji Gao,
  • Jin’an Xu,
  • Hanjie Qiu,
  • Maoxin Shi and ,
  • Siyao Li,
  • Rusheng Qian,
  • Jingchen Luo,
  • Fanli Wu,
  • Haibo Nie and
  • Tengfei Ma
  • + 5 authors+ 0 author

Granite sawdust is a by-product in the process of stone processing, which is usually piled up, thus easily causing environmental pollution. To achieve resource utilization, granite sawdust was used as a partial substitution of cement in this work. Th...

(This article belongs to the Topic Converting and Recycling of Waste Materials)
  • Review
  • Open Access
20 Citations
8,792 Views
29 Pages

Waste-to-Energy Technologies and Their Role in Municipal Solid Waste Management

  • Harrison Appiah,
  • Paul Asamoah and
  • Armando Gabriel McDonald

Rising global municipal solid waste (MSW) generation poses severe environmental and resource challenges, necessitating sustainable management strategies beyond landfilling. This review critically synthesizes thermochemical waste-to-energy (WtE) techn...

  • Article
  • Open Access
925 Views
18 Pages

The Use of Fresnel Lens Softening Stations to Improve Recycling Feasibility of Injection-Molding Purges

  • Ma. Guadalupe Plaza,
  • Maria Luisa Mendoza López,
  • José de Jesús Pérez Bueno,
  • Edain Belén Pérez Mendoza and
  • Martha Elva Pérez Ramos

Injection-molding purges are heterogeneous, bulky residues whose uncertain composition and irregular geometry hinder direct reinsertion, making cold shredding costly and maintenance-intensive. This work develops a low-infrastructure solar-assisted pr...

(This article belongs to the Special Issue Celebrating 10 Years of Recycling: Shaping the Future of Waste Management)
  • Article
  • Open Access
1 Citations
782 Views
13 Pages

The large-scale dredging activities in port areas generate substantial quantities of dredged soil, leading to land occupation and disposal challenges, while industrial wastes such as fly ash and desulfurization gypsum remain underutilized. In this st...

  • Article
  • Open Access
2 Citations
1,986 Views
18 Pages

Valorization of Sugarcane Bagasse Ash (SCBA) in Cementitious Composites: Hydration Behavior, Nanomodification and Sustainability Performance

  • Javier Rodrigo Nahuat-Sansores,
  • Karla del Carmen García-Uitz,
  • Julio César Cruz-Argüello,
  • Carlos Andrés Ramírez-Pinto and ,
  • Ricardo Enrique Vega-Azamar,
  • Danna Lizeth Trejo-Arroyo and
  • Yazmin Vidal Valdez
  • + 2 authors+ 0 author

Sugarcane bagasse ash (SCBA) has been widely studied as a partial supplementary cementitious material; nonetheless, its hydration behavior and performance when combined with nanoscale modifiers remain insufficiently understood. The aim of this study...

  • Article
  • Open Access
815 Views
21 Pages

The durability characteristics of inorganic mixtures incorporating recycled aggregates from rural residential construction and demolition waste with high red brick content remain inadequately elucidated. To illuminate their long-term serviceability,...

(This article belongs to the Special Issue Recycled Materials in Sustainable Pavement Innovation)
  • Article
  • Open Access
1 Citations
1,871 Views
21 Pages

Multistage Recycling of Aluminum Casting Slags: Metal Extraction and Salt Flux Regeneration

  • Boris Kulikov,
  • Nikolay Dombrovskiy,
  • Aleksandr Kosovich,
  • Evgeniy Partyko and ,
  • Yulbarskhon Mansurov,
  • Pavel Yuryev,
  • Nikita Stepanenko,
  • Yuriy Baykovskiy,
  • Alexander Durnopyanov and
  • Maxim Baranov
  • + 6 authors+ 1 author

The depletion of natural resources remains an acute global problem, highlighting the importance of developing sustainable technologies that enable the simultaneous extraction of metals and recycling of waste. This paper describes a study of a technol...

(This article belongs to the Topic Converting and Recycling of Waste Materials)
  • Article
  • Open Access
2 Citations
2,149 Views
22 Pages

This paper analyzes the evolution of packaging waste recycling rates in four Central and Eastern European EU Member States—Bulgaria, Hungary, Poland, and Romania—in comparison with the EU-27 average over the period 2014–2023. The an...

  • Article
  • Open Access
2 Citations
1,825 Views
29 Pages

This study explores the valorisation of apple pruning (AP) residues into sustainable carbonaceous adsorbents for dye-contaminated wastewater. Activated biochars (ABCs) were produced via single-step (ABC-1S) and two-step (ABC-2S) KOH activation, while...

  • Review
  • Open Access
1 Citations
4,131 Views
45 Pages

Role of Mineral Processing in Enhancing Recycled Concrete Aggregate Quality—A Critical Review

  • Priscila Thalita Barros de Lima,
  • Rafael dos Santos Macedo,
  • Maurício Guimarães Bergerman,
  • Anette Müller and
  • Carina Ulsen

Mineral processing may decisively influence recycled aggregate (RA) production, yet it is systematically underreported. This critical review screened 338 Scopus-indexed publications (2004–2024) and retained 204 studies after eligibility assessm...

(This article belongs to the Special Issue Recycled Materials in Sustainable Pavement Innovation)
  • Article
  • Open Access
675 Views
18 Pages

This study investigated a feasible recycling and detoxification process for waste tire ash containing hazardous Zn and Al using acid leaching, followed by layered double hydroxide (LDH) synthesis. The novelty of this work is the direct conversion of...

  • Review
  • Open Access
2 Citations
2,116 Views
19 Pages

Environmental Risks and Sustainable Management Pathways for Used Lubricating Oils: A Structured Review with Conceptual Spill Risk Analysis

  • Catherine Cabrera-Escobar,
  • Juan Moreno-Gutiérrez,
  • Rubén Rodríguez-Moreno,
  • Emilio Pájaro-Velázquez and ,
  • Fátima Calderay-Cayetano and
  • Vanesa Durán-Grados
  • + 1 author+ 0 author

Used lubricating oils (ULOs) represent one of the largest hazardous liquid waste streams globally and pose significant environmental risks if improperly managed. This study presents a structured review of ULO management pathways, including regenerati...

  • Article
  • Open Access
1,111 Views
23 Pages

Synthesis of Phosphoanhydrite Binders Based on Phosphogypsum from Various Industrial Sources

  • Nataliya Alfimova,
  • Kseniya Levickaya,
  • Ivan Nikulin,
  • Mikhail Lebedev and
  • Natalia Kozhukhova

Phosphogypsum is one of the most widely produced gypsum-containing wastes. Therefore, researchers worldwide are exploring ways to recycle them. It is most often considered as an alternative to natural gypsum in the production of calcium sulfate hemih...

(This article belongs to the Topic Circular Materials Engineering: Waste Valorization and Sustainable Applications)
  • Article
  • Open Access
2 Citations
1,317 Views
21 Pages

This study investigates the material recycling potential of discarded wind instrument reeds (Arundo donax), which are conventionally incinerated, by compounding them with thermoplastics (thermoplastic polyolefin, TPO; polybutylene succinate, PBS). Af...

  • Article
  • Open Access
1 Citations
2,037 Views
16 Pages

Pyrolysis of Recycled LLDPE/LDPE Polymer Blend: Optimization of Process Parameters for High Yield of Wax

  • Oluwatobi Elijah Akindele,
  • Jinfeng Zhang,
  • Yuxin Liu and
  • Uttandaraman Sundararaj

This study evaluates the pyrolysis of recycled linear low-density and low-density polyethylene (rLLDPE/rLDPE) blends for producing wax suitable as a precursor for corrosion-resistant coatings. Experiments were performed in a horizontal quartz tubular...

  • Article
  • Open Access
2,493 Views
15 Pages

Glass is a highly recyclable material that provides substantial environmental benefits, including savings in raw materials and energy as well as a reduction in CO2 emissions. To ensure the production of high-quality secondary raw materials, container...

(This article belongs to the Topic Waste Management for Recycling and Environmental Protection)
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Recycling - ISSN 2313-4321