{
  "abstract": "In this study, a novel nitrogen (N)-doped biochar was successfully synthesized from rice husk through urea-assisted co-pyrolysis and utilized as an efficient adsorbent for Cu(Ⅱ) removal from aqueous solutions. A systematic investigation of pyrolysis temperature (600 ℃ vs 800 ℃) revealed their critical role in modulating the properties of the biochar. The N-doped biochar produced at 800 ℃ (NBC-800) demonstrated a maximum adsorption capacity of 53.8 mg·g −1 under optimal conditions (pH 5, adsorbent dose 2 g·L −1 , initial concentration 100 mg·L −1 , contact time 24 h), representing approximately a tenfold enhancement compared to the non-doped biochar (BC). Kinetics and isotherm studies indicated that the adsorption process adhered to the pseudo-second-order and Langmuir models, suggesting a chemisorption-dominated mechanism. Comprehensive characterization revealed that the enhanced performance was due to the synergistic effects of an increased specific surface area, a developed porous structure, and the introduction of N-containing functional groups (e.g., pyridinic-N, pyrrolic-N, graphitic N), which facilitated electrostatic attraction and surface complexation with Cu(Ⅱ). Furthermore, an economic analysis demonstrated that the cost of Cu(Ⅱ) removal using the synthesized N-doped biochar was significantly lower than that of commercial activated carbon, underscoring its economic feasibility for practical applications. Thus, this study not only presents a high-performance adsorbent derived from agricultural waste but also offers valuable mechanistic insights and economic justification for its potential application in the treatment of heavy metal-contaminated water.",
  "abstract_shown": true,
  "affiliations": [
    "Henan Vocational College of Water Conservancy and Environment, Zhengzhou, 450008, People’s Republic of China",
    "School of Safety Science and Engineering, Henan Polytechnic University, JiaoZuo, 454003, People’s Republic of China",
    "School of Smart Energy & Environment, Zhongyuan University of Technology, Zhengzhou, 450007, People’s Republic of China",
    "Engineering Research Center for Biomass Conversion, Ministry of Education, State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, Jiangxi, China",
    "Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Ultimo, NSW, 2007, Australia"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 6,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Xuebai Guo"
    },
    {
      "affs": [
        2
      ],
      "name": "Cuixia Liu"
    },
    {
      "affs": [
        3
      ],
      "name": "Feihu Lu"
    },
    {
      "affs": [
        2
      ],
      "name": "Bohan Liu"
    },
    {
      "affs": [
        3
      ],
      "name": "Qi Zhang"
    },
    {
      "affs": [
        4
      ],
      "name": "Ting Zhou",
      "orcid": "0000-0003-3771-6742"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/80hpra745gwzf.bib",
  "cited_by": 6,
  "doi": "10.1007/s11270-026-09592-0",
  "fulltext_url": null,
  "id": "80hpra745gwzf",
  "issns": [
    "0049-6979",
    "1573-2932"
  ],
  "landing_url": "https://doi.org/10.1007/s11270-026-09592-0",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2312|Adsorption and biosorption for pollutant removal"
    ]
  ],
  "openalex": "W7162134687",
  "pdf_url": "https://link.springer.com/content/pdf/10.1007/s11270-026-09592-0.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-05-22",
  "publisher": "Springer Science+Business Media",
  "ris": "https://research.draconitic.com/paper/80hpra745gwzf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T13:26:58Z",
      "native_id": "W7162134687",
      "source": "openalex",
      "url": "https://doi.org/10.1007/s11270-026-09592-0"
    }
  ],
  "subjects": [
    {
      "field": "earth",
      "origin": "openalex:2312|Adsorption and biosorption for pollutant removal",
      "subfield": "hydrology-soils"
    }
  ],
  "title": "Preparation of a Novel N-Doped Biochar from Agricultural Waste for Cu(Ⅱ) Removal: Insights into the Kinetic, Equilibrium, Adsorption Mechanisms and Economic Feasibility",
  "title_text": "Preparation of a Novel N-Doped Biochar from Agricultural Waste for Cu(Ⅱ) Removal: Insights into the Kinetic, Equilibrium, Adsorption Mechanisms and Economic Feasibility",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T13:21:21Z",
  "url": "https://research.draconitic.com/paper/80hpra745gwzf",
  "venue": "Water Air & Soil Pollution",
  "versions": []
}