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Advancing sustainable aquaculture with a zero-valent copper filter system
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PRE
AI
T
J
刘
Y
S
L
Y
胡
曲
M
孙
DOI：10.1038/s41893-026-01902-y.png)
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Abstract
En 中文
Algal blooms, caused by excessive microalgae growth, threaten water quality, aquatic ecosystems and human health by releasing cyanotoxins and unpleasant odours. Conventional algae elimination methods, including the use of copper sulfate algaecides, are chemically intensive and environmentally unsustainable. This study introduces an innovative filtration system featuring a zero-valent copper microporous filter (CuMF), offering a sustainable solution for aquaculture systems susceptible to algal blooms and associated harmful by-products. The CuMF achieves 100% algae retention while maintaining an ultrahigh water permeability (11,700 l m−2 h−1 bar−1), markedly outperforming conventional polymeric filters. Furthermore, the CuMF facilitates spontaneous Cu(III) generation for selective oxidation of extracellular organic matter via interfacial electron transfer while preserving algal cells for resource recovery. In aquaculture systems impacted by harmful algal proliferation, this filtration system delivers long-term stability, high-concentration algal biomass recovery, and efficient removal of algal toxins, odorous compounds, micropollutants, antibiotic resistance genes, and viruses, enabling closed-loop water reuse. Techno-economic analysis and life-cycle assessment validate the feasibility of CuMF, with a 64.8% reduction in economic costs and a 77.5–97.2% decrease in environmental impacts across 21 categories, compared with using algaecides. These findings position the CuMF as an innovative and environmentally sustainable solution for mitigating algal blooms and advancing resource-efficient, circular aquaculture. Algal blooms severely threaten water safety, but conventional algae elimination methods are chemical-intense. This study presents a zero-valent copper microporous filter capable of removing algal cells and other harmful pollutants from aquaculture water without chemical input.
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