A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes
The increase in cyanobacterial blooms linked to climate change and the eutrophication of water bodies is a global concern. The harmful cyanobacterium <i>Microcystis aeruginosa</i> is one of the most common bloom-forming species whose removal from fresh water and, in particular, from that...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Microorganisms |
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| Online Access: | https://www.mdpi.com/2076-2607/10/10/2052 |
| _version_ | 1797471057614995456 |
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| author | Leda Giannuzzi Julián Bacciadone Graciela L. Salerno |
| author_facet | Leda Giannuzzi Julián Bacciadone Graciela L. Salerno |
| author_sort | Leda Giannuzzi |
| collection | DOAJ |
| description | The increase in cyanobacterial blooms linked to climate change and the eutrophication of water bodies is a global concern. The harmful cyanobacterium <i>Microcystis aeruginosa</i> is one of the most common bloom-forming species whose removal from fresh water and, in particular, from that used for water treatment processes, remains a crucial goal. Different biodegradable and environmentally friendly coagulants/flocculants have been assayed, with chitosan showing a very good performance. However, chitosan in its original form is of limited applicability since it is only soluble in acid solution. The objective of this work was therefore to test the coagulant/flocculant capacity of trimethylchitosan (TMC), a chitosan derivative produced from residues of the fishing industry. TMC has a constitutively net positive charge enabling it to remain in solution regardless of the pH. Results show that even at alkaline pHs, common during cyanobacterial blooms, TMC is effective in removing buoyant cyanobacteria from the water column, both in test tube and Jar-Test experiments. Cell integrity was confirmed by fluorescent stain and electron microscopy. Our findings lead us to conclude that the use of TMC to remove bloom cells early in the treatment of drinking water is both feasible and promising. |
| first_indexed | 2024-03-09T19:44:12Z |
| format | Article |
| id | doaj.art-34db554d679f47a7bed8e1c6e2cdad45 |
| institution | Directory Open Access Journal |
| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-09T19:44:12Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microorganisms |
| spelling | doaj.art-34db554d679f47a7bed8e1c6e2cdad452023-11-24T01:27:38ZengMDPI AGMicroorganisms2076-26072022-10-011010205210.3390/microorganisms10102052A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment ProcessesLeda Giannuzzi0Julián Bacciadone1Graciela L. Salerno2Centro de Investigación y Desarrollo en Criotecnología de Alimentos (CIDCA-CONICET), La Plata 1900, ArgentinaFundación Para Investigaciones Biológicas Aplicadas (FIBA), Vieytes 3103, Mar del Plata 7600, ArgentinaFundación Para Investigaciones Biológicas Aplicadas (FIBA), Vieytes 3103, Mar del Plata 7600, ArgentinaThe increase in cyanobacterial blooms linked to climate change and the eutrophication of water bodies is a global concern. The harmful cyanobacterium <i>Microcystis aeruginosa</i> is one of the most common bloom-forming species whose removal from fresh water and, in particular, from that used for water treatment processes, remains a crucial goal. Different biodegradable and environmentally friendly coagulants/flocculants have been assayed, with chitosan showing a very good performance. However, chitosan in its original form is of limited applicability since it is only soluble in acid solution. The objective of this work was therefore to test the coagulant/flocculant capacity of trimethylchitosan (TMC), a chitosan derivative produced from residues of the fishing industry. TMC has a constitutively net positive charge enabling it to remain in solution regardless of the pH. Results show that even at alkaline pHs, common during cyanobacterial blooms, TMC is effective in removing buoyant cyanobacteria from the water column, both in test tube and Jar-Test experiments. Cell integrity was confirmed by fluorescent stain and electron microscopy. Our findings lead us to conclude that the use of TMC to remove bloom cells early in the treatment of drinking water is both feasible and promising.https://www.mdpi.com/2076-2607/10/10/2052cyanobacterial blooms<i>Microcystis aeruginosa</i>chitosantrimethylchitosana second order quadratic model |
| spellingShingle | Leda Giannuzzi Julián Bacciadone Graciela L. Salerno A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes Microorganisms cyanobacterial blooms <i>Microcystis aeruginosa</i> chitosan trimethylchitosan a second order quadratic model |
| title | A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes |
| title_full | A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes |
| title_fullStr | A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes |
| title_full_unstemmed | A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes |
| title_short | A Promising Use of Trimethyl Chitosan for Removing <i>Microcystis aeruginosa</i> in Water Treatment Processes |
| title_sort | promising use of trimethyl chitosan for removing i microcystis aeruginosa i in water treatment processes |
| topic | cyanobacterial blooms <i>Microcystis aeruginosa</i> chitosan trimethylchitosan a second order quadratic model |
| url | https://www.mdpi.com/2076-2607/10/10/2052 |
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