Fabrication and investigation of novel monochloroacetic acid fortified, tripolyphosphate-crosslinked chitosan for highly efficient adsorption of uranyl ions from radioactive effluents

Meng, Xiangjian; Xu, Guangming; You, Yue; Li, Xindai; Dou, Junfeng; Fan, Fuqiang

doi:10.1016/j.jhazmat.2022.128461

Cited by 40 publications

(3 citation statements)

References 97 publications

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“…The main reason affecting the adsorption is that with the increase of the content of CKLA, the quaternary ammonium salt on the CKLA hydrogel also increases, which provides more adsorption sites and thus reduces the required dosage of CKLA hydrogels. A decrease in adsorption efficiency was observed for the CKLA hydrogel with 25% CKLA content due to the increase of quaternary ammonium content, which causes electrostatic repulsion [31].…”

Section: Effect Of the Dosage Of Ckla Hydrogels On Cr Adsorptionmentioning

confidence: 98%

Fabricating Cationic Lignin Hydrogels for Dye Adsorption

Wang¹,

Feng²,

Li³

et al. 2023

Journal of Renewable Materials

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Due to the low content of adsorption-active groups in lignin, its application in the field of adsorption is limited. Herein, we first prepared cationic kraft lignin acrylate, from which a cationic lignin (CKLA) hydrogel was further prepared by cationic kraft lignin acrylate, acrylamide, and N, N'-methylenebisacrylamide. The morphology, compression properties and swelling properties of CKLA hydrogels were investigated. The prepared CKLA hydrogel was applied as an adsorbent for Congo red. The effect of CKLA hydrogel dosages, initial concentration of Congo red, and pH on adsorption efficiency was investigated. The maximum Congo red removal efficiency was obtained at the initial concentration of Congo red of 50 mg/L, pH 7, and 5 mg dosage of CKLA hydrogel with 20% cationic lignin content. After five cycles of adsorption, the adsorption efficiency of the hydrogel for Congo red still reached more than 80%. The CKLA hydrogel showed pseudo-second-order adsorption kinetics for Congo red adsorption. These results demonstrate the potential of the CKLA hydrogel as an adsorbent for water treatment.

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Section: Effect Of the Dosage Of Ckla Hydrogels On Cr Adsorptionmentioning

confidence: 98%

Fabricating Cationic Lignin Hydrogels for Dye Adsorption

Wang¹,

Feng²,

Li³

et al. 2023

Journal of Renewable Materials

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“…By adding 10 mg of fiber to 50 mL of U(VI) solution, controlling different temperatures (20~40℃) and pH values (2~8), the adsorption experiments were studied. After the adsorption was completed, the uranium solution was filtered out, and the remaining U(VI) concentration was determined by spectrophotometry (578 nm); the removal rate and adsorption capacity were calculated according to the following Formulas (1) and (2) [7] .…”

Section: Adsorption Test Designmentioning

confidence: 99%

The adsorption of U(VI) by persimmon tannin modified aminated polyacrylonitrile fiber

Wu,

Xie

2023

J. Phys.: Conf. Ser.

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In this study, a green and efficient persimmon tannin functionalized polyacrylonitrile fiber (PAN-TETA-PT) was prepared and used to treat U(VI). The influence of pH value, adsorption temperature and time, and fiber material dosage on the adsorption U(VI) of PAN-TETA-PT fibers were investigated, and the kinetics, isotherm, and thermodynamics of fibers were analyzed. When the pH is 6, the temperature is 30°C, and the fiber dosage is 0.2 g·L−1, the adsorption rate of PAN-TETA-PT fibers to U(VI) was 96.5%, and the U(VI) adsorption capacity was 159.75 mg/g. The kinetic and isothermal studies show that the adsorption of PAN-TETA-PT fibers to U(VI) is chemisorbed and multilayer adsorption. The thermodynamic analysis reflects that the PAN-TETA-PT is spontaneously endothermic for the adsorbed U(VI).

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“…Cross-linking reaction with various crosslinking agents can offer better chemical stability and mechanical strength for CS [25]. Therefore, cross-linked CS is considered a promising alternative adsorbent for various types of water contaminants such as methylene blue dye [26], uranyl ions [27], tetracycline [28], malachite green and indigo carmine days [29], Ni (II) and Cd (II) ions [30]. However, the crosslinking approach reduces the adsorption capacity of CS by limiting its reactive groups [31].…”

Section: Introductionmentioning

confidence: 99%

Quaternary biocomposite of chitosan-polyvinyl alcohol/food grade algae/ montmorillonite clay for cationic methyl violet 2B dye removal: Optimization and desirability functions

Sando,

Jawad,

Farhan

2024

Preprint

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A quaternary composite adsorbent of chitosan-polyvinyl alcohol/food grade algae/ montmorillonite clay (CS-PVA/FGA/MMT) was synthesized by hydrothermal process to be a promising adsorbent for the removal of cationic methyl violet 2B dye (MV 2B). The adsorption working variables including CS-PVA/FGA/MMT dosage (A: 0.02–0.1 g/100 mL), pH of the dye solution (B: 4–10) and contact duration (C: 20–480 min) were optimized using response surface methodology with Box-Behnken design (RSM-BBD). The optimal conditions of the adsorption key parameters were confirmed by desirability function test and identified to be CS-PVA/FGA/MMT dosage of 0.099 g/100 mL and solution pH of 8. The equilibrium adsorption studies revealed that the adsorption of MV 2B dye on CS-PVA/FGA/MMT surface follows the Langmuir isotherm model and the pseudo-second-order kinetic model. The highest adsorption capacity of CS-PVA/FGA/MMT towards MV 2B was determined to be 105.7 mg/g at 25 ⁰C based on the Langmuir isotherm model parameters. The suggested mechanism of MV 2B adsorption by CS-PVA/FGA/MMT can be assigned to the various possible interactions such as electrostatic forces, n-π stacking, and H-bonding. This study shows that the synthesized CS-PVA/FGA/MMT material possesses a unique structure and preferable adsorption capabilities towards cationic dye. Therefore, it offers a practical solution for removing harmful cationic dyes from contaminated wastewater.

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Fabrication and investigation of novel monochloroacetic acid fortified, tripolyphosphate-crosslinked chitosan for highly efficient adsorption of uranyl ions from radioactive effluents

Cited by 40 publications

References 97 publications

Fabricating Cationic Lignin Hydrogels for Dye Adsorption

Fabricating Cationic Lignin Hydrogels for Dye Adsorption

The adsorption of U(VI) by persimmon tannin modified aminated polyacrylonitrile fiber

Quaternary biocomposite of chitosan-polyvinyl alcohol/food grade algae/ montmorillonite clay for cationic methyl violet 2B dye removal: Optimization and desirability functions

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