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A method for reclaiming nutrients from a

Maha Ezzidine, Helge Litved

2026enaerobic digestionaquaculture sludgechitosanfertilizerflocculation

Abstract

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The aim of this work was to develop a method that allows the recovery of nutrients from aquaculture sludge, not only to alleviate the disposal problem, but also to address the future scarcity of non-renewable fertilizers. This method includes two steps: Nutrient mobilization using aerobic digestion followed by solids precipitation using chitosan as the flocculant. The aerobic digestion experiments were conducted in aerated batch reactors, while a jar test apparatus was used to assess the capacity of chitosan to remove total suspended solids (TSS) and turbidity. During aerobic digestion, the concentration of soluble N increased significantly, indicating effective nutrient recovery. Chitosan flocculation resulted in a reduction of turbidity by 96%, reclaiming 80% of the sludge as a nutrient-rich clear phase. This suggests that the developed method not only addresses waste management but also enhances nutrient availability for soilless crop systems.

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Cite This Work

@article{3f45be4e-e31e-405a-8b37-c619d4d8f3c3,
  title={A method for reclaiming nutrients from a},
  author={Maha Ezzidine and Helge Litved},
  year={2026},
  language={en}
}
TY  - JOUR
TI  - A method for reclaiming nutrients from a
AU  - Maha Ezzidine
AU  - Helge Litved
PY  - 2026
LA  - en
ER  -

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