Green synthesis of a novel functionalized chitosan adsorbent for Cu(II) adsorption from aqueous solution

Wang, Fang; Gao, Jiyun; Jia, Lijuan; Wang, Shixing; Ning, Ping

doi:10.1007/s11356-021-15684-7

Cited by 12 publications

(3 citation statements)

References 39 publications

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“…The FKBC surface is positively charged when the pH of the solution is less than pH zpc , resulting in electrostatic repulsion, hindering the Cu 2+ diffusion to the adsorbent surface. 49 In addition, H + in the solution combines with F − to form HF, limiting F − adsorption by FKBC. The surface is negatively charged when the pH > pH zpc .…”

Section: Resultsmentioning

confidence: 99%

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KOH-modified bamboo charcoal loaded with α-FeOOH for efficient adsorption of copper and fluoride ions from aqueous solution

Yang,

Zhang,

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

“…32,35 DS 0 values are greater than zero, suggesting increased randomness at the solid/liquid interface for Cu 2+ and F − adsorption. 14,49 DH 0 values also are positive, corroborating that the adsorption is endothermic, agreeing well with the adsorption above isotherm analysis. 3,32…”

Section: Adsorption Thermodynamicsmentioning

confidence: 99%

KOH-modified bamboo charcoal loaded with α-FeOOH for efficient adsorption of copper and fluoride ions from aqueous solution

Yang,

Zhang,

et al. 2023

RSC Adv.

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“…CS (2 g) was dissolved in 100 mL acetic acid solution (2 wt.%) of DI and stirred until it was clear and transparent [29]. The DE (5 g) was added to the CS solution, and was then stirred until DE was evenly dispersed into the CS solution.…”

Section: Fabrication Of Cs-dementioning

confidence: 99%

Preparation of Chitosan-Diatomite/Calcium Alginate Composite Hydrogel Beads for the Adsorption of Congo Red Dye

Zhao

Shen

2023

Water

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In this paper, novel eco-friendly cross-linked chitosan-diatomite/calcium alginate (CS-DE@CA) composite hydrogel beads were successfully prepared for water purification. The obtained sorbents were characterized and studied by using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA), which confirmed the successful modification and encapsulation of diatomite into hydrogel beads. The adsorption performance of composite beads for Congo red in an aqueous solution was studied by ultraviolet-visible spectrophotometry. In particular, the CS-DE@CA exhibited higher removal efficiencies (~89.9%) than the removal efficiencies (~83.6%) of the DE@CA (in the temperature = 20 °C, 100 mL, 50 mg/L, and pH = 7). It was also found that adsorption capacity of Congo red increased from 23.28 mg/g to 38.84 mg/g when the starting concentration increased from 25 mg/L to 75 mg/L. The adsorption process was dominated by chemisorption, and its maximum adsorption capacity for Congo red was calculated to be 48.42 mg/g by Langmuir model. Additionally, the as-prepared sorbent maintained an exceptional adsorption capacity after four adsorption–desorption cycles. Overall, this study also provides new guidance and avenues for further fabrication and development of eco-friendly purifier for the removal of Congo red in contaminated water.

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Enzymatic Preparation of a Novel Methylcellulose Adsorbent for Cu(II) Adsorption from Aqueous Solution

Jiang

Zhou²,

Wan³

et al. 2022

J Polym Environ

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Green synthesis of a novel functionalized chitosan adsorbent for Cu(II) adsorption from aqueous solution

Cited by 12 publications

References 39 publications

KOH-modified bamboo charcoal loaded with α-FeOOH for efficient adsorption of copper and fluoride ions from aqueous solution

KOH-modified bamboo charcoal loaded with α-FeOOH for efficient adsorption of copper and fluoride ions from aqueous solution

Preparation of Chitosan-Diatomite/Calcium Alginate Composite Hydrogel Beads for the Adsorption of Congo Red Dye

Enzymatic Preparation of a Novel Methylcellulose Adsorbent for Cu(II) Adsorption from Aqueous Solution

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