Journal
CARBOHYDRATE POLYMERS
Volume 177, Issue -, Pages 443-450Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.08.083
Keywords
Alginate; Methyl orange; Azo dye; Dye decolorization; Fenton; Fenton-like
Categories
Funding
- CNPq [441888/2014-3]
- CNPq (PQ) [305974/2016-5]
Ask authors/readers for more resources
The efficiency of Fenton and Fenton-like processes can be seriously affected by the continuous loss of iron ions and by the formation of solid sludge. Here, alginate (Alg) films were synthesized to stabilize iron ions (Fe2+ and Fe3+) and to enhance their catalytic activities towards the decolorization of methyl orange via heterogeneous Fenton and Fenton-like processes. Iron ions were ionically bond to the Alg molecules resulting in a three-dimensional network with specific structural and morphological features according to the valence states of iron. Our results demonstrated that both Alg-Fe2+ and Alg-Fe3+ films show highlighted catalytic activity for the decolorization of MO and high decolorization rates. Reuse experiments demonstrated that both films could be employed in at least five consecutive decolorization processes without losing their catalytic efficiency or stability. Taken together, our findings reveal that the Alg-Fe2+ and Alg-Fe3+ films may be suitable low-cost catalysts in heterogeneous Fenton and Fenton-like processes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available