Wool keratin as a novel, alternative, low-cost adsorbent rich in various –N and –S proteins for eliminating methylene blue from water

Oussadi, Karima; Al-Farraj, Saleh; Benabdallah, Bouchra; Benettayeb, Asmaa; Haddou, Boumediene; Sillanpaa, Mika

doi:10.1007/s13399-024-05851-4

Cited by 2 publications

(1 citation statement)

References 57 publications

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“…-NH 2 , -COOH, -SH, and -OH) make it a promising adsorbent. 52 Accordingly, the adsorption mechanism of keratinbased lms for RB4 dye is mainly ruled by electrostatic attractions (between the -OH group of keratin and the sulfonate (-SO 3 − ) group on the RB4 structure) and hydrogen bonding interactions (between the -OH group of keratin and the nitrogen group on the RB4 structure). 24,53 Adsorption isotherms Adsorption isotherms were determined to investigate the relationship between the adsorbent and the dye adsorbed under equilibrium conditions.…”

Section: Dye Adsorption Using Keratin-based Lmsmentioning

confidence: 99%

Ionic-liquid-processed keratin-based biocomposite films with cellulose and chitin for sustainable dye removal

Polesca,

Passos,

Nakasu

et al. 2024

RSC Sustain.

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Section: Dye Adsorption Using Keratin-based Lmsmentioning

confidence: 99%

Ionic-liquid-processed keratin-based biocomposite films with cellulose and chitin for sustainable dye removal

Polesca,

Passos,

Nakasu

et al. 2024

RSC Sustain.

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Novel biosorbents based on carboxyethyl chitosan for Allura Red dye contaminated water treatment

Drannikov,

Blinova,

Korel

et al. 2024

Chim.Tech.Acta

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Low biodegradability of several dyes leads to their accumulation in water, causing ecological and health damage. The adsorption and, in particular, biosorption processes are widely applied for the wastewater treatment. This article presents the first comparative study of the Allura red dye removal under neutral pH at 25 oC applying novel biosorbents: carboxyethyl chitosan hydrogel (CEC) and cryogel of carboxyethyl chitosan cross-linked with butanediol-1,4 diglycidyl ether (DEB-CEC). The gels were synthesized in “green” manner, and the characterization revealed porous structure and high swelling for both biopolymer compositions, which are the properties important for adsorption. The kinetic studies demonstrated that the adsorption rate for DEB-CEC is better represented by pseudo-second-order, while CEC followed better pseudo-first-order kinetics. The adsorption isotherm of Allura Red suited the Temkin model for both samples, with the maximum adsorption capacity of 22.523 mg/g (45.4 μmol/g) and 10.482 mg/g (21.1 μmol/g) for CEC and DEB-CEC, respectively. The results demonstrated that CEC and DEB-CEC polymers can be used as biodegradable and eco-friendly biosorbents for Allura Red dye removal from aqueous solutions, making these biosorbents promising for wastewater treatment and prevention of the azo-dye environmental pollution.

show abstract

Wool keratin as a novel, alternative, low-cost adsorbent rich in various –N and –S proteins for eliminating methylene blue from water

Cited by 2 publications

References 57 publications

Ionic-liquid-processed keratin-based biocomposite films with cellulose and chitin for sustainable dye removal

Ionic-liquid-processed keratin-based biocomposite films with cellulose and chitin for sustainable dye removal

Novel biosorbents based on carboxyethyl chitosan for Allura Red dye contaminated water treatment

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