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<p>Microalgae have demonstrated significant potential in sustainable wastewater treatment and biofuel production due to their ability to efficiently remove nutrients while generating high-value biomass. In this study, we isolated and identified two dual-functional microalgae, <i>Desmodesmus</i> sp. F1 and <i>Scenedesmus</i> sp. Fs, which exhibited better growth and higher pollutant removal efficiencies in synthetic municipal wastewater compared to <i>Chlorella vulgaris</i>. F1 and Fs achieved rapid nitrogen (N) and phosphorus (P) removal, with total nitrogen removal exceeding 96% and nearly 100% of phosphorus removed within 72&#xa0;h. The two strains exhibited strong lipid accumulation, with lipid content exceeding 55% of dry weight, positioning them as promising candidates for biodiesel production. Comparatively, F1 exhibited a balanced fatty acid profile and favorable cetane number, making it suitable for high-quality biodiesel. This performance surpasses other studied strains such as <i>Chlorella vulgaris</i> and <i>Scenedesmus obliquus</i>, positioning F1 and Fs as viable candidates for integrated environmental remediation and biofuel applications. These findings provide insights for future optimizing microalgae-based systems for sustainable wastewater treatment and bioenergy production, highlighting the potential of F1 and Fs for scalable environmental and energy applications.</p>

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Integrated nutrient removal and biodiesel potential of newly isolated Desmodesmus sp. F1 and Scenedesmus sp. Fs from synthetic municipal wastewater

  • 期刊论文

  • 发表日期：

    2026年7月16日

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  • Chao Li,
  • Zhaoyi Li,
  • Ming Du,
  • Youping Nan,
  • Helen Yu,
  • Jiangxin Wang

摘要

Microalgae have demonstrated significant potential in sustainable wastewater treatment and biofuel production due to their ability to efficiently remove nutrients while generating high-value biomass. In this study, we isolated and identified two dual-functional microalgae, Desmodesmus sp. F1 and Scenedesmus sp. Fs, which exhibited better growth and higher pollutant removal efficiencies in synthetic municipal wastewater compared to Chlorella vulgaris. F1 and Fs achieved rapid nitrogen (N) and phosphorus (P) removal, with total nitrogen removal exceeding 96% and nearly 100% of phosphorus removed within 72 h. The two strains exhibited strong lipid accumulation, with lipid content exceeding 55% of dry weight, positioning them as promising candidates for biodiesel production. Comparatively, F1 exhibited a balanced fatty acid profile and favorable cetane number, making it suitable for high-quality biodiesel. This performance surpasses other studied strains such as Chlorella vulgaris and Scenedesmus obliquus, positioning F1 and Fs as viable candidates for integrated environmental remediation and biofuel applications. These findings provide insights for future optimizing microalgae-based systems for sustainable wastewater treatment and bioenergy production, highlighting the potential of F1 and Fs for scalable environmental and energy applications.