Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water
In this work, cellulose nanocrystals (CNC) derived from sawdust were successfully incorporated into a nanofiltration membrane produced by the interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC). The characteristics of unmodified and CNC-modified membranes were investigated us...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/7/670 |
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| author | Amos Adeniyi Danae Gonzalez-Ortiz Céline Pochat-Bohatier Sandrine Mbakop Maurice Stephen Onyango |
| author_facet | Amos Adeniyi Danae Gonzalez-Ortiz Céline Pochat-Bohatier Sandrine Mbakop Maurice Stephen Onyango |
| author_sort | Amos Adeniyi |
| collection | DOAJ |
| description | In this work, cellulose nanocrystals (CNC) derived from sawdust were successfully incorporated into a nanofiltration membrane produced by the interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC). The characteristics of unmodified and CNC-modified membranes were investigated using scanning electron microscopy (SEM), Atomic Force Microscopy (AFM), zeta potential measurement, X-ray photoelectron spectroscopy (XPS), and contact angle measurement. The performance of the membranes in terms of nitrate removal and water flux was investigated using 60 mg/L of potassium nitrate solution in a dead-end test cell. The characteristics of the modified membrane revealed a more nodular structure, higher roughness, increased negative surface charge, and higher hydrophilicity than the pristine membrane, leading to nitrate rejection of 94%. In addition, the membrane gave an average water flux of 7.2 ± 1.8 L/m<sup>2</sup>/h/bar. This work implies that nanofiltration, a relatively low-pressure process compared to reverse osmosis, can be used for improved nitrate removal from drinking water using an NF membrane modified with sawdust-derived cellulose nanocrystals. |
| first_indexed | 2024-03-09T13:24:18Z |
| format | Article |
| id | doaj.art-5f037b2618604ba1b5db7abf9a39d30d |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T13:24:18Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-5f037b2618604ba1b5db7abf9a39d30d2023-11-30T21:26:01ZengMDPI AGMembranes2077-03752022-06-0112767010.3390/membranes12070670Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking WaterAmos Adeniyi0Danae Gonzalez-Ortiz1Céline Pochat-Bohatier2Sandrine Mbakop3Maurice Stephen Onyango4Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria 0001, South AfricaInstitut Européen des Membranes, IEM UMR-5635, Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, FranceInstitut Européen des Membranes, IEM UMR-5635, Université de Montpellier, ENSCM, CNRS, Place Eugène Bataillon, CEDEX 5, 34095 Montpellier, FranceDepartment of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria 0001, South AfricaDepartment of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria 0001, South AfricaIn this work, cellulose nanocrystals (CNC) derived from sawdust were successfully incorporated into a nanofiltration membrane produced by the interfacial polymerization of piperazine (PIP) and trimesoyl chloride (TMC). The characteristics of unmodified and CNC-modified membranes were investigated using scanning electron microscopy (SEM), Atomic Force Microscopy (AFM), zeta potential measurement, X-ray photoelectron spectroscopy (XPS), and contact angle measurement. The performance of the membranes in terms of nitrate removal and water flux was investigated using 60 mg/L of potassium nitrate solution in a dead-end test cell. The characteristics of the modified membrane revealed a more nodular structure, higher roughness, increased negative surface charge, and higher hydrophilicity than the pristine membrane, leading to nitrate rejection of 94%. In addition, the membrane gave an average water flux of 7.2 ± 1.8 L/m<sup>2</sup>/h/bar. This work implies that nanofiltration, a relatively low-pressure process compared to reverse osmosis, can be used for improved nitrate removal from drinking water using an NF membrane modified with sawdust-derived cellulose nanocrystals.https://www.mdpi.com/2077-0375/12/7/670nanofiltrationcellulose nanocrystalsnitrateinterfacial polymerizationwater fluxrejection |
| spellingShingle | Amos Adeniyi Danae Gonzalez-Ortiz Céline Pochat-Bohatier Sandrine Mbakop Maurice Stephen Onyango Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water Membranes nanofiltration cellulose nanocrystals nitrate interfacial polymerization water flux rejection |
| title | Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water |
| title_full | Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water |
| title_fullStr | Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water |
| title_full_unstemmed | Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water |
| title_short | Preparation of Nanofiltration Membrane Modified with Sawdust-Derived Cellulose Nanocrystals for Removal of Nitrate from Drinking Water |
| title_sort | preparation of nanofiltration membrane modified with sawdust derived cellulose nanocrystals for removal of nitrate from drinking water |
| topic | nanofiltration cellulose nanocrystals nitrate interfacial polymerization water flux rejection |
| url | https://www.mdpi.com/2077-0375/12/7/670 |
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