| Full text | |
| Author(s): |
da Costa, Talles B.
;
Camani, Paulo H.
;
Ferreira, Rafaela R.
;
Barbosa, Rennan F. S.
;
Rosa, Derval dos S.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF POLYMERS AND THE ENVIRONMENT; v. 33, n. 3, p. 21-pg., 2025-01-25. |
| Abstract | |
This study evaluated the effect of corn starch's amylose/amylopectin content on the development of crosslinked hydrogels with trisodium citrate for the sorption of potentially toxic metals (PTMs). The results, obtained through a robust methodology, indicated a clear relation between the amylose content and crosslinking degree, thereby impacting the properties of the hydrogels. The hydrogel with high amylose (70 wt.%) and low amylopectin (30 wt.%) content (Hylon VII (R)) demonstrated a high crosslinking degree (0.297) and good thermal stability and water absorption (72.71%), with a semicrystalline structure. The hydrogel with low amylose (1.8 wt.%) and high amylopectin (98.2 wt.%) content (Amisol 4000 (R)), on the other hand, showed the lowest degree of crosslinking (0.109), water absorption (49.77%), and high solubility (46%), which makes its applicability difficult due to its low stability in aqueous media. The influence of amylose (28 wt.%) and amylopectin (72 wt.%) content indicated that the Amisol 3408 (R) hydrogel showed valuable properties, presenting a higher potential for PTMs sorption with the following affinity order: Cu2+ (68.62%) > Cd2+ (63.13%) > Mn2+ (37.36%) > Zn2+ (26.61%) > Cr6+ (16.80%). Besides, the possible sorption mechanism was ion exchange between Cu2+/Cd2+/Mn2+/Zn2+ and H+ in the hydrogels. Thus, starch-based hydrogel is an alternative sorbent to remove and recover PTMs from wastewater. (AU) | |
| FAPESP's process: | 22/01382-3 - Cellulose hydrogels containing modified clays for the removal and recovery of metal ions present in contaminated water |
| Grantee: | Rafaela Reis Ferreira |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 19/16301-6 - Starch aerogels containing modified nanocellullose for removal of heavy metals in wastewater from the industry sector |
| Grantee: | Paulo Henrique Camani |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 24/08105-0 - Poly(alfa and beta-cyclodextrins) containing Brazilian clays to remove potentially toxic elements in contaminated water |
| Grantee: | Rafaela Reis Ferreira |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 21/08296-2 - Development of chitosan hydrogels containing modified cellulose nanostructures for metal removal and recovery from contaminated water |
| Grantee: | Rennan Felix da Silva Barbosa |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 22/11133-0 - Development of biodegradable porous starch hydrogels containing modified nanocellulose or nanoclays for the removal and recovery of metals in contaminated water |
| Grantee: | Talles Barcelos da Costa |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 23/11783-8 - Composite starch hydrogels for sorption of potentially toxic elements in contaminated water: synergistic interaction between selective ligands in modified nanocellulose |
| Grantee: | Talles Barcelos da Costa |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 24/15696-5 - Nanocomposite membranes containing nanoparticles chemically modified with plasma: the effect of plasma to develop high-performance membranes for environmental remediation |
| Grantee: | Paulo Henrique Camani |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 20/13703-3 - Environmentally friendly porous materials for the recovery and revaluation of metals reclaimed from contaminated water |
| Grantee: | Derval dos Santos Rosa |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 23/11229-0 - Biodegradable porous composite membranes based on PLA containing nanoclay/nanocellulose for removal and recovery of PTEs from contaminated water |
| Grantee: | Paulo Henrique Camani |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |