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Lentil Hydrothermal Carbonization: A Dual Solution for Water Purification and Growth Enhancement

Author

Listed:
  • Taher Diab

    (Al Farabi Junior High School)

  • Ahmad Hejazi

    (Al Farabi Junior High School)

  • Muhamad Hugerat

    (The Academic Arab College for Education in Israel
    The Galilee Society)

  • Sare Asli

    (The Galilee Society
    Al-Qasemi Academic College
    Haifa University)

  • Mahmud Diab

    (The Academic Arab College for Education in Israel
    Al-Qasemi Academic College)

Abstract

Amid growing concerns regarding water quality and food security, our study pioneers a dual-purpose approach utilizing the lentil hydrothermal carbonization (HTC) approach. We present activated carbon derived from lentils, showcasing exceptional efficiency with a remarkable > 99% removal of Methylene Blue (MB), starting with an initial concentration of 4.4 µg/ml. Optimization of activation parameters revealed a straightforward and environmentally friendly process, eliminating the need for an inert atmosphere. The kinetic study emphasized a close alignment with a first-order reaction model, with a rate constant of 0.127 $$\:{s}^{-1}$$ . The activated carbon’s performance was further evaluated for its ability to remove food dyes, achieving removal efficiencies of 32% for red dye and 65% for green dye. Finally, the lentil-derived supernatant, a byproduct of HTC, proved instrumental in promoting hydroponic maize growth, manifesting significant improvements in shoot and root parameters, increasing their weight by 94% and 200%, respectively. This study presents an innovative and sustainable solution at the confluence of water purification and agricultural enrichment, contributing to the global discourse on resource efficiency and waste minimization.

Suggested Citation

  • Taher Diab & Ahmad Hejazi & Muhamad Hugerat & Sare Asli & Mahmud Diab, 2025. "Lentil Hydrothermal Carbonization: A Dual Solution for Water Purification and Growth Enhancement," Circular Economy and Sustainability, Springer, vol. 5(3), pages 2373-2385, June.
    • Handle: RePEc:spr:circec:v:5:y:2025:i:3:d:10.1007_s43615-025-00503-9
    DOI: 10.1007/s43615-025-00503-9
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