{
  "abstract": "Asphalt rubber (AR) is increasingly used as a sustainable pavement binder, but hazardous fumes generated during production constrain its wider application. This study investigated wood biochar (WB), walnut-shell biochar (WSB) and corn-straw biochar (CSB) as sustainable fume-suppressing additives for AR binders. The biochars were characterized by scanning electron microscopy (SEM), elemental analysis (EA), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and N2 physisorption tests, while AR emissions were evaluated through real-time monitoring of total volatile organic compounds (TVOC), H2S, SO2 and NOX, together with thermal desorption-gas chromatography-mass spectrometry (TD-GC-MS) analysis. Conventional binder properties and rheological behavior were also evaluated. The results showed that WSB possessed the most developed hierarchical pore structure, with a Brunauer–Emmett–Teller (BET) surface area of 285.8 m2/g and a total pore volume of 0.165 cm3/g, achieving the strongest TVOC reduction (65.6%) and the lowest detectable organic-fume complexity. TD-GC-MS analysis showed that WSB mainly reduced the relative responses of aliphatic hydrocarbons and PAH-related hydrocarbons, whereas WB selectively reduced BTEX/alkylbenzenes and S/N-containing responses. CSB, enriched in ash-derived minerals and oxygen-containing groups, exhibited the strongest sulfur-gas suppression, achieving complete SO2 elimination and 57.65% H2S inhibition, but also induced a redistribution toward oxygenated organics and alicyclic hydrocarbons. Biochar addition generally improved high-temperature stiffness and compatibility. These findings demonstrate feedstock-dependent and pollutant-specific suppression behavior, suggesting that physical adsorption and surface chemical interactions may jointly contribute to fume suppression, and provide guidance for selecting biochar additives for cleaner AR production.",
  "abstract_shown": true,
  "affiliations": [
    "School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou 450001, China"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Zechen Yao"
    },
    {
      "affs": [
        0
      ],
      "name": "Boqiang Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "You Zhou"
    },
    {
      "affs": [
        0
      ],
      "name": "Shaoshuai Li"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4ev7hgk2q3w6t.bib",
  "cited_by": 0,
  "doi": "10.3390/polym18212689",
  "fulltext_url": null,
  "id": "4ev7hgk2q3w6t",
  "issns": [
    "2073-4360"
  ],
  "landing_url": "https://www.mdpi.com/2073-4360/18/21/2689",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [],
  "openalex": null,
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": "MDPI AG",
  "ris": "https://research.draconitic.com/paper/4ev7hgk2q3w6t.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:44Z",
      "native_id": "10.3390/polym18212689",
      "source": "crossref",
      "url": "https://www.mdpi.com/2073-4360/18/21/2689"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "issn:2073-4360",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Systematic Investigation into Biochar-Mediated Suppression of Asphalt Rubber Fumes: Inhibition Mechanism, Pollutant Profiles, and Binder Performance",
  "title_text": "Systematic Investigation into Biochar-Mediated Suppression of Asphalt Rubber Fumes: Inhibition Mechanism, Pollutant Profiles, and Binder Performance",
  "type": "peer-reviewed",
  "updated_at": "2026-10-31T00:20:50Z",
  "url": "https://research.draconitic.com/paper/4ev7hgk2q3w6t",
  "venue": "Polymers",
  "versions": []
}