The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
Preparation of fibrous chitosan/sodium alginate composite foams for the adsorption of cationic and anionic dyes
Abstract
Natural polysaccharide is attractive for preparing the environmentally friendly and highly efficient adsorbent. However, to obtain an efficient amphoteric absorbent for dealing with complex wastewater is still challenging. Herein, fibrous chitosan/sodium alginate composite foams were prepared by lyophilization with ternary acetic acid/water/tetrahydrofuran solvents, which had suitable morphology of interconnected pores and microscale fibers for dye adsorption. The amphoteric composite foams showed high adsorption capacities for both anionic Acid Black-172 (817.0 mg/g) and cationic Methylene Blue (1488.1 mg/g), which were far superior to those of the control samples prepared with traditional solvents of acetic acid/water. The adsorption kinetics and isotherm data showed that the adsorption followed the pseudo-second-order and Langmuir model. Further thermodynamics analysis revealed the adsorption was a spontaneous process. Meanwhile, the foams achieved effective adsorption capacity of AB-172 and MB dyes under a wide range of environmental pH, and maintained high adsorption efficiency even after four cycles. The adsorption mechanism is chemisorption, where the adsorption capacities for the anionic and cationic dyes were dependent on the mass ratio of chitosan to sodium alginate. As a novel amphoteric adsorbent, the fibrous chitosan/sodium alginate composite foam shows the potential to remove both cationic and anionic dyes from wastewaters.
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Cites
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Chitosan–alginate hybrid scaffolds for bone tissue engineering
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Removal of colorants from wastewater: A review on sources and treatment strategies
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Graphene oxide/ferric hydroxide composites for efficient arsenate removal from drinking water
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Metadata
- Authors
- Zhao, X., Wang, X., & Lou, T.
- Venue
- Journal of Hazardous Materials
- Publisher
- Elsevier BV
- Published
- 2021-02
- Volume
- 403
- Pages
- 124054
- ISSN
- 0304-3894 (ISSN-L)
- OpenAlex
- W3088263893
- Cited by
- 322
- References
- 55
- FWCI
- 12.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhao, X., Wang, X., & Lou, T. (2021). Preparation of fibrous chitosan/sodium alginate composite foams for the adsorption of cationic and anionic dyes. Journal of Hazardous Materials. https://doi.org/10.1016/j.jhazmat.2020.124054
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