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<p>The extensive use of synthetic sorbents in oil spill remediation is increasingly constrained by economic costs and adverse environmental impacts. Consequently, the development of sustainable, bio-based sorbent materials has become a priority in environmental protection research. This study critically evaluates the applicability of dried <i>Posidonia oceanica</i> leaves as a natural sorbent for crude oil removal from the water surface under batch wet conditions. The influence of key operational parameters including contact time, sorbent particle size, crude oil film thickness, and sorbent dosage on adsorption performance was systematically investigated. Structural and surface characteristics of the raw and oil-loaded sorbents were examined. FTIR confirmed crude oil uptake through the appearance/intensification of hydrocarbon functional-group signatures on the biomass matrix, while SEM showed that the initially rough, porous surface became largely covered by a continuous oil-rich layer with adhered oil droplets. The results demonstrated rapid adsorption kinetics, with equilibrium achieved within 5&#xa0;min. Adsorption capacity was strongly dependent on particle size and oil film thickness. A maximum crude oil adsorption capacity of 5.02&#xa0;g/g dry sorbent was attained at 25&#xa0;°C. The findings indicate that dried <i>Posidonia oceanica</i> leaves exhibit significant potential as an eco-friendly, biodegradable, and efficient biosorbent for crude oil spill remediation in marine environments.</p> Graphical Abstract <p></p>

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Valorization of Posidonia oceanica leaves as a sustainable biosorbent for petroleum hydrocarbon spill cleanup

  • 期刊论文

  • 发表日期：

    2026年3月19日

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  • Mustafa Abu Ghalia,
  • Nourelhuda Najar,
  • Abduelmajid Najar,
  • Elhadi Elakrami,
  • Kosia Shawish

摘要

The extensive use of synthetic sorbents in oil spill remediation is increasingly constrained by economic costs and adverse environmental impacts. Consequently, the development of sustainable, bio-based sorbent materials has become a priority in environmental protection research. This study critically evaluates the applicability of dried Posidonia oceanica leaves as a natural sorbent for crude oil removal from the water surface under batch wet conditions. The influence of key operational parameters including contact time, sorbent particle size, crude oil film thickness, and sorbent dosage on adsorption performance was systematically investigated. Structural and surface characteristics of the raw and oil-loaded sorbents were examined. FTIR confirmed crude oil uptake through the appearance/intensification of hydrocarbon functional-group signatures on the biomass matrix, while SEM showed that the initially rough, porous surface became largely covered by a continuous oil-rich layer with adhered oil droplets. The results demonstrated rapid adsorption kinetics, with equilibrium achieved within 5 min. Adsorption capacity was strongly dependent on particle size and oil film thickness. A maximum crude oil adsorption capacity of 5.02 g/g dry sorbent was attained at 25 °C. The findings indicate that dried Posidonia oceanica leaves exhibit significant potential as an eco-friendly, biodegradable, and efficient biosorbent for crude oil spill remediation in marine environments.

Graphical Abstract