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<p>Oil-contaminated water generated from various industrial processes poses a significant environmental challenge. This study evaluates the feasibility of using fish scales (FS), particularly those derived from Kuwait’s Hammour fish, as an inexpensive, sustainable, and efficient biosorbent for oil removal. Batch and packed-column experiments were conducted under optimized conditions: 1000&#xa0;mg FS dosage, 500&#xa0;mg/L initial oil concentration, pH 7, 60-min contact time, and 0.15&#xa0;mm particle size. The results showed that FS achieved up to 95% oil removal efficiency in batch experiments and 97% efficiency in packed-column tests with seawater, confirming the scalability of the process. The adsorption capacity reached 141.4&#xa0;g/g, and the data were best described by the Freundlich isotherm and pseudo-second-order kinetic model. The FS adsorbent also demonstrated strong reusability, maintaining high oil removal efficiency with only a 12–17% reduction after five adsorption–desorption cycles under optimal conditions. Oil removal efficiency decreased with increasing temperature, particle size, pH, and oil concentration but improved with higher FS dosages. These findings highlight FS as a low-cost, eco-friendly, and reusable biosorbent with strong potential for large-scale applications in oil spill remediation and oily wastewater treatment, while also opening opportunities for developing similar biosorbents for other pollutants.</p>

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Innovative Remediation of Oily Water Utilizing Environmentally Friendly Fish-Scale Biosorbents

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • Rana N. Malhas,
  • Jean H. El Achkar,
  • Biltayib Misbah,
  • Abdullah Alawadhi

摘要

Oil-contaminated water generated from various industrial processes poses a significant environmental challenge. This study evaluates the feasibility of using fish scales (FS), particularly those derived from Kuwait’s Hammour fish, as an inexpensive, sustainable, and efficient biosorbent for oil removal. Batch and packed-column experiments were conducted under optimized conditions: 1000 mg FS dosage, 500 mg/L initial oil concentration, pH 7, 60-min contact time, and 0.15 mm particle size. The results showed that FS achieved up to 95% oil removal efficiency in batch experiments and 97% efficiency in packed-column tests with seawater, confirming the scalability of the process. The adsorption capacity reached 141.4 g/g, and the data were best described by the Freundlich isotherm and pseudo-second-order kinetic model. The FS adsorbent also demonstrated strong reusability, maintaining high oil removal efficiency with only a 12–17% reduction after five adsorption–desorption cycles under optimal conditions. Oil removal efficiency decreased with increasing temperature, particle size, pH, and oil concentration but improved with higher FS dosages. These findings highlight FS as a low-cost, eco-friendly, and reusable biosorbent with strong potential for large-scale applications in oil spill remediation and oily wastewater treatment, while also opening opportunities for developing similar biosorbents for other pollutants.