Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications
The pesticide pollution of surface water and wastewater has been recognized as a major worldwide concern due to their persistence in the aquatic environment and the potential adverse effects on human, flora, and fauna health. Apart from pesticides, bio-contamination with various bacterial population...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/15/3145 |
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| author | Ionel Adrian Dinu Luminita Ghimici Irina Elena Raschip |
| author_facet | Ionel Adrian Dinu Luminita Ghimici Irina Elena Raschip |
| author_sort | Ionel Adrian Dinu |
| collection | DOAJ |
| description | The pesticide pollution of surface water and wastewater has been recognized as a major worldwide concern due to their persistence in the aquatic environment and the potential adverse effects on human, flora, and fauna health. Apart from pesticides, bio-contamination with various bacterial populations leads to waterborne diseases. Hence, it becomes vital to remove the above-mentioned pollutants from water using a suitable process. Consequently, our study emphasized the potential benefits of a highly porous, chemically cross-linked 3D chitosan (CSGA) cryogel in the removal of pesticides and bacteria. The CSGA sponges were prepared using a facile and cost-effective approach that consisted of a three-step cryogenic process: (i) freezing at −18 °C, (ii) storage in a frozen state for a certain period, and (iii) thawing at room temperature. Batch adsorption experiments were performed under different environments, where the effects of several parameters, such as pH, contact time, and initial pollutant concentration were evaluated to identify the appropriate adsorption conditions for maximum pesticide removal. The CSGA-based cryogel sponges exhibited a theoretical maximum adsorption capacity of 160.82 mg g<sup>−1</sup> for the Fastac 10EC pesticide and very good recyclability at room temperature. In addition, the antibacterial activities of these sponges were also investigated against various bacterial pathogens. The rates of killing <i>Escherichia coli</i>, <i>Listeria monocytogenes</i>, and <i>Staphylococcus aureus</i> were close to 82%, 100%, and 99%, respectively. These results demonstrated that CSGA cryogels could be efficiently used in water remediation and find applications in the removal of pesticides and disinfection. |
| first_indexed | 2024-03-09T05:04:13Z |
| format | Article |
| id | doaj.art-930fe3e7ad404e72b2f81d52a626cd34 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T05:04:13Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
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| series | Polymers |
| spelling | doaj.art-930fe3e7ad404e72b2f81d52a626cd342023-12-03T12:56:56ZengMDPI AGPolymers2073-43602022-08-011415314510.3390/polym14153145Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial ApplicationsIonel Adrian Dinu0Luminita Ghimici1Irina Elena Raschip2“Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania“Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, Romania“Petru Poni” Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41A, 700487 Iasi, RomaniaThe pesticide pollution of surface water and wastewater has been recognized as a major worldwide concern due to their persistence in the aquatic environment and the potential adverse effects on human, flora, and fauna health. Apart from pesticides, bio-contamination with various bacterial populations leads to waterborne diseases. Hence, it becomes vital to remove the above-mentioned pollutants from water using a suitable process. Consequently, our study emphasized the potential benefits of a highly porous, chemically cross-linked 3D chitosan (CSGA) cryogel in the removal of pesticides and bacteria. The CSGA sponges were prepared using a facile and cost-effective approach that consisted of a three-step cryogenic process: (i) freezing at −18 °C, (ii) storage in a frozen state for a certain period, and (iii) thawing at room temperature. Batch adsorption experiments were performed under different environments, where the effects of several parameters, such as pH, contact time, and initial pollutant concentration were evaluated to identify the appropriate adsorption conditions for maximum pesticide removal. The CSGA-based cryogel sponges exhibited a theoretical maximum adsorption capacity of 160.82 mg g<sup>−1</sup> for the Fastac 10EC pesticide and very good recyclability at room temperature. In addition, the antibacterial activities of these sponges were also investigated against various bacterial pathogens. The rates of killing <i>Escherichia coli</i>, <i>Listeria monocytogenes</i>, and <i>Staphylococcus aureus</i> were close to 82%, 100%, and 99%, respectively. These results demonstrated that CSGA cryogels could be efficiently used in water remediation and find applications in the removal of pesticides and disinfection.https://www.mdpi.com/2073-4360/14/15/3145chitosancryogelFastac 10EC removaladsorptionantibacterial properties |
| spellingShingle | Ionel Adrian Dinu Luminita Ghimici Irina Elena Raschip Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications Polymers chitosan cryogel Fastac 10EC removal adsorption antibacterial properties |
| title | Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications |
| title_full | Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications |
| title_fullStr | Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications |
| title_full_unstemmed | Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications |
| title_short | Macroporous 3D Chitosan Cryogels for Fastac 10EC Pesticide Adsorption and Antibacterial Applications |
| title_sort | macroporous 3d chitosan cryogels for fastac 10ec pesticide adsorption and antibacterial applications |
| topic | chitosan cryogel Fastac 10EC removal adsorption antibacterial properties |
| url | https://www.mdpi.com/2073-4360/14/15/3145 |
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