Duckweed application in nature-based system for water phytoremediation and high-value coproducts at family agrisystem from a circular economy perspective
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View abstract on PubMed
Summary
This summary is machine-generated.Duckweed phytoremediation effectively reduced the Trophic State Index in fish farm effluents. The harvested duckweed biomass is a valuable source for developing circular economy coproducts like functional foods and nutraceuticals.
Area Of Science
- Environmental Science
- Biotechnology
- Circular Economy
Background
- Duckweeds are known for phytoremediation of effluents.
- Nature-based Solutions (NBS) offer sustainable approaches for water quality improvement.
- Small fish farms require efficient and eco-friendly waste management strategies.
Purpose Of The Study
- To implement duckweed phytoremediation in small fish farms as an NBS.
- To assess the impact of duckweed cultivation on water quality using the Trophic State Index (TSI).
- To analyze duckweed biomass for potential coproduct development within a circular economy framework.
Main Methods
- Two management systems (15-day and 30-day cycles) using Lemna minor for phytoremediation in Clarias gariepinus farming.
- Effluent analysis and biomass harvesting conducted over 60-day cycles.
- Laboratory batch system tests for phytoremediation efficiency.
- Biomass analysis for nutritional content (amino acids, protein, minerals, fatty acids, carotenoids).
Main Results
- Lemna minor demonstrated significant phytoremediation efficiency, reducing the Trophic State Index (TSI) in System II (30-day cycle).
- Duckweed dry biomass showed high levels of crude protein, minerals, fatty acids, and carotenoids.
- The biomass is a viable source for amino acids, suitable for functional foods, animal feed, and nutraceuticals.
Conclusions
- Lemna minor can be effectively integrated into Nature-based Solutions for improving water quality in fish farms.
- Duckweed biomass generated from phytoremediation is a valuable resource for developing coproducts, promoting a circular economy in agrisystems.
- The study highlights the dual potential of duckweed for environmental remediation and the production of high-value nutritional compounds.
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