Assessing the effectiveness of nature-based solutions to mitigate cyanobacteria blooms and remove toxins from contaminated water.
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| Formato: | Artículo científico |
| Lenguaje: | en |
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Aquatic toxicology (Amsterdam, Netherlands)
2025
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| _version_ | 1868266141770579968 |
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| author | Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila |
| author_facet | Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila |
| collection | PubMed - marine biology |
| contents | Assessing the effectiveness of nature-based solutions to mitigate cyanobacteria blooms and remove toxins from contaminated water. Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila Microcystins Microcystis Water Purification Water Pollutants, Chemical Eutrophication Cyanobacteria Marine Toxins Bacterial Toxins Soil Biodegradation, Environmental Harmful Algal Bloom Cyanobacterial blooms (CyanoHABs) and their associated toxins pose a significant threat to public health and water quality. A novel approach called Multi-Soil-Layering (MSL) has been developed and demonstrated to effectively and sustainably remove CyanoHABs and cyanotoxins from water. This study evaluated the MSL's ability to remove CyanoHABs on a laboratory scale. Two MSL mesocosms were designed to treat well water contaminated with Microcystis aeruginosa and MC-LR. These consisted of alternating permeable layers of a pozzolan and soil mixture layers arranged in a brick-layer pattern. The MSL1 used a sandy soil containing 8 % clay, while the MSL2 used a soil with a high clay content of 54 %. The mesocosms were continuously fed with a synthetic bloom at a hydraulic loading rate of 200 L m day. The MSL systems effectively removed up to 90 % of the organic matter and nutrients. In addition, both MSL mesocosms were highly efficient at removing cyanobacteria cells and microcystins from the water, achieving a removal rate of over 99 %. Furthermore, both MSL substrates demonstrated the ability to adsorb and biodegrade MC-LR. These results suggest that MSL ecotechnology could be an effective and sustainable solution for removing cyanoHABs from freshwater ecosystems. |
| format | Artículo científico |
| id | pubmed_41066888 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Aquatic toxicology (Amsterdam, Netherlands) |
| record_format | pubmed |
| spellingShingle | Assessing the effectiveness of nature-based solutions to mitigate cyanobacteria blooms and remove toxins from contaminated water. Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila Microcystins Microcystis Water Purification Water Pollutants, Chemical Eutrophication Cyanobacteria Marine Toxins Bacterial Toxins Soil Biodegradation, Environmental Harmful Algal Bloom Assessing the effectiveness of nature-based solutions to mitigate cyanobacteria blooms and remove toxins from contaminated water. Aba, Roseline Prisca Mugani, Richard Sbahi, Sofyan Redouane, El Mahdi Azevedo, Joana Martinez I Quer, Alba Hejjaj, Abdessamad Campos, Alexandre Carvalho, Pedro N Ouazzani, Naaila Vasconcelos, Vitor Oudra, Brahim Mandi, Laila Microcystins Microcystis Water Purification Water Pollutants, Chemical Eutrophication Cyanobacteria Marine Toxins Bacterial Toxins Soil Biodegradation, Environmental Harmful Algal Bloom Cyanobacterial blooms (CyanoHABs) and their associated toxins pose a significant threat to public health and water quality. A novel approach called Multi-Soil-Layering (MSL) has been developed and demonstrated to effectively and sustainably remove CyanoHABs and cyanotoxins from water. This study evaluated the MSL's ability to remove CyanoHABs on a laboratory scale. Two MSL mesocosms were designed to treat well water contaminated with Microcystis aeruginosa and MC-LR. These consisted of alternating permeable layers of a pozzolan and soil mixture layers arranged in a brick-layer pattern. The MSL1 used a sandy soil containing 8 % clay, while the MSL2 used a soil with a high clay content of 54 %. The mesocosms were continuously fed with a synthetic bloom at a hydraulic loading rate of 200 L m day. The MSL systems effectively removed up to 90 % of the organic matter and nutrients. In addition, both MSL mesocosms were highly efficient at removing cyanobacteria cells and microcystins from the water, achieving a removal rate of over 99 %. Furthermore, both MSL substrates demonstrated the ability to adsorb and biodegrade MC-LR. These results suggest that MSL ecotechnology could be an effective and sustainable solution for removing cyanoHABs from freshwater ecosystems. |
| title | Assessing the effectiveness of nature-based solutions to mitigate cyanobacteria blooms and remove toxins from contaminated water. |
| topic | Microcystins Microcystis Water Purification Water Pollutants, Chemical Eutrophication Cyanobacteria Marine Toxins Bacterial Toxins Soil Biodegradation, Environmental Harmful Algal Bloom |
| url | https://pubmed.ncbi.nlm.nih.gov/41066888/ |