On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption
Alginate is a versatile polymer with gelling properties facilitating many applications, such as adsorption. To promote efficient adsorption, guidance is needed on the reactivity and coordination of the alginate-metal binding process. This study presents a novel approach utilizing Isothermal Titratio...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Carbohydrate Polymer Technologies and Applications |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666893922000214 |
| _version_ | 1811243474447499264 |
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| author | Chantal Mohammed Lorale Lalgee Matika Kistow Nigel Jalsa Keeran Ward |
| author_facet | Chantal Mohammed Lorale Lalgee Matika Kistow Nigel Jalsa Keeran Ward |
| author_sort | Chantal Mohammed |
| collection | DOAJ |
| description | Alginate is a versatile polymer with gelling properties facilitating many applications, such as adsorption. To promote efficient adsorption, guidance is needed on the reactivity and coordination of the alginate-metal binding process. This study presents a novel approach utilizing Isothermal Titration Calorimetry (ITC) to elucidate the interaction between Pb2+, Cu2+, and Cd2+ions; and alginates of various monomeric compositions. A 2-step binding process was observed during gelation, with the first driving the gelation process at low temperatures. Furthermore, Pb2+ and Cu2+ binding parameters were enhanced over lower Cd2+ affinity with decreasing M:G ratios. Our results support these findings, showing high removal rates for Pb2+ and Cu2+of 85 and 65% respectively at low M:G ratios and low molecular weight and 75% for Cd2+ at high M:G ratios. Thus, alginate monomeric composition plays an integral role in the binding process and should be considered for efficient adsorption. |
| first_indexed | 2024-04-12T14:08:01Z |
| format | Article |
| id | doaj.art-b2c5215216e04a5f8456724d7e5435b0 |
| institution | Directory Open Access Journal |
| issn | 2666-8939 |
| language | English |
| last_indexed | 2024-04-12T14:08:01Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbohydrate Polymer Technologies and Applications |
| spelling | doaj.art-b2c5215216e04a5f8456724d7e5435b02022-12-22T03:30:01ZengElsevierCarbohydrate Polymer Technologies and Applications2666-89392022-06-013100203On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorptionChantal Mohammed0Lorale Lalgee1Matika Kistow2Nigel Jalsa3Keeran Ward4Department of Chemical Engineering, University of the West Indies, St.Augustine, Trinidad, WIDepartment of Chemistry, University of the West Indies, St. Augustine, Trinidad, WI; Corresponding author.Department of Chemical Engineering, University of the West Indies, St.Augustine, Trinidad, WIDepartment of Chemistry, University of the West Indies, St. Augustine, Trinidad, WIDepartment of Chemical Engineering, University of the West Indies, St.Augustine, Trinidad, WI; School of Chemical and Process Engineering (SCAPE), University of Leeds, Leeds, LS2 9JT, United Kingdom; Corresponding author.Alginate is a versatile polymer with gelling properties facilitating many applications, such as adsorption. To promote efficient adsorption, guidance is needed on the reactivity and coordination of the alginate-metal binding process. This study presents a novel approach utilizing Isothermal Titration Calorimetry (ITC) to elucidate the interaction between Pb2+, Cu2+, and Cd2+ions; and alginates of various monomeric compositions. A 2-step binding process was observed during gelation, with the first driving the gelation process at low temperatures. Furthermore, Pb2+ and Cu2+ binding parameters were enhanced over lower Cd2+ affinity with decreasing M:G ratios. Our results support these findings, showing high removal rates for Pb2+ and Cu2+of 85 and 65% respectively at low M:G ratios and low molecular weight and 75% for Cd2+ at high M:G ratios. Thus, alginate monomeric composition plays an integral role in the binding process and should be considered for efficient adsorption.http://www.sciencedirect.com/science/article/pii/S2666893922000214AlginateIsothermal titration calorimetryMonomeric compositionThermodynamicsAdsorption |
| spellingShingle | Chantal Mohammed Lorale Lalgee Matika Kistow Nigel Jalsa Keeran Ward On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption Carbohydrate Polymer Technologies and Applications Alginate Isothermal titration calorimetry Monomeric composition Thermodynamics Adsorption |
| title | On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption |
| title_full | On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption |
| title_fullStr | On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption |
| title_full_unstemmed | On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption |
| title_short | On the binding affinity and thermodynamics of sodium alginate-heavy metal ion interactions for efficient adsorption |
| title_sort | on the binding affinity and thermodynamics of sodium alginate heavy metal ion interactions for efficient adsorption |
| topic | Alginate Isothermal titration calorimetry Monomeric composition Thermodynamics Adsorption |
| url | http://www.sciencedirect.com/science/article/pii/S2666893922000214 |
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