Rubber Waste and Tyre Stewardship

A special issue of Recycling (ISSN 2313-4321).

Deadline for manuscript submissions: 31 October 2025 | Viewed by 320

Special Issue Editor


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Guest Editor
School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: rubber; asphalt; decrosslinking; tyre recycling; aging; sustainability; devulcanization; road

Special Issue Information

Dear Colleagues,

The number of end-of-life tyres (ELTs) has exceeded 1 billion/y globally, and their random accumulation and improper disposal have caused serious environmental pollution problems and resource wastage. The efficient upcycling of ELTs is of great significance to sustainable development. This Special Issue focuses on green chemistry and high-value-added situations, particularly real practical cases, which are key to the upcycling of ELTs. This issue welcome papers from different areas related to rubber upcycling to fill the gap in research and accelerate the industry.

Dr. Shifeng Wang
Guest Editor

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Keywords

  • tyre rubber
  • asphalt
  • decrosslinking
  • upcycling
  • ageing
  • devulcanization
  • road

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Published Papers (1 paper)

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Research

18 pages, 4718 KiB  
Article
Recovering Zinc and Iron from Waste Tire-Derived Pyrolysis Carbon Black to Prepare Layered Metal Hydroxide Composites for Efficient Adsorption of Dye Methyl Orange
by Pei Chen, Wenli Liu, Yanzhi Sun, Yongmei Chen and Junqing Pan
Recycling 2025, 10(2), 76; https://doi.org/10.3390/recycling10020076 - 15 Apr 2025
Viewed by 236
Abstract
The pyrolysis carbon black (CBp) from waste tires contains zinc, iron, and other metal elements, which have high recycling value. This study proposes a simple method of recovering zinc and iron from waste tire-derived CBp to synthesize hydrotalcite-type adsorbents for the treatment of [...] Read more.
The pyrolysis carbon black (CBp) from waste tires contains zinc, iron, and other metal elements, which have high recycling value. This study proposes a simple method of recovering zinc and iron from waste tire-derived CBp to synthesize hydrotalcite-type adsorbents for the treatment of anodic dye wastewater. Firstly, zinc-aluminum hydrotalcite (LDH) and zinc-iron aluminum hydrotalcite (FeLDH) were obtained by leaching the zinc and iron ions from CBp with an acid solution. As compared with LDH, FeLDH shows increased laminate metal ion arrangement density and layer spacing. By calcining the LDH and FeLDH at 500 °C, zinc aluminum oxides (LDO) and zinc iron aluminum oxides (FeLDO) were then prepared and applied for the adsorption of dye methyl orange (MO). The results demonstrate that the maximum adsorption capacity of LDO and FeLDO are 304.9 and 609.8 mg g−1 at pH of 4.0, respectively. The adsorption processes of both LDO and FeLDO are consistent with the Langmuir adsorption isotherm and the proposed second-order kinetic model. The adsorption regeneration performance and adsorption mechanism of LDO and FeLDO were also investigated in detail. Regeneration experiments show that after three cycles, the removal rate of MO by LDO remains above 80%, while that of FeLDO only remains around 64% in the first cycle after regeneration. This work would provide a new pathway to realize the high-value metal recycling of waste tire-derived CBp and solve the contamination of dye wastewater. Full article
(This article belongs to the Special Issue Rubber Waste and Tyre Stewardship)
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