Fabrication of Cotton Linter-Based Adsorbents by Radiation Grafting Polymerization for Humic Acid Removal from Aqueous Solution

Du, Juan; Dong, Zhen; Pi, Yuxuan; Yang, Xiaojuan; Zhao, L.

doi:10.3390/polym11060962

Cited by 21 publications

(6 citation statements)

References 27 publications

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“…The adsorption capacities obtained by other adsorbents for HA removal were summarized in Table 4 to compare with ours [2,3,24,26,42,[49][50][51][52][53][54][55][56]. However, we should bear in mind in advance that it is difficult to directly compare our adsorption capacity with others, since the experimental conditions, such as the initial pH value, temperature, concentration and volume of HA solution, and dose of adsorbent, vary from article to article.…”

Section: Comparison With Other Adsorbentsmentioning

confidence: 96%

Quaternization of Porous Cellulose Beads and Their Use for Removal of Humic Acid from Aqueous Medium

et al. 2023

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Porous cellulose beads were quaternized with glycidyltrimethylammonium chloride (GTMAC) to explore a potential use of them as an adsorbent for removal of humic acid (HA) from aqueous medium. The introduction of quaternary ammonium groups was confirmed by FT-IR and XPS analysis. The content of introduced quaternary ammonium groups increased with an increase in the GTMAC concentration. The adsorption capacity increased with a decrease in the initial pH value and attained the maximum value at pH 3 and increased with an increase in the content of quaternary ammonium groups. The removal % increased with the dose of quaternized cellulose beads at both pH 3.0 and 6.0. The adsorption process obeyed the pseudo-second order kinetic model and exhibited a better fit to the Langmuir isotherm model, suggesting that the adsorption of HA is accomplished through the electrostatic interaction between a quaternary ammonium group introduced and a dissociated carboxy group of a HA molecule. The maximum adsorption capacity obtained in this study is comparable to or higher than those published by other articles. HA loaded was completely released to NaOH solutions at higher than 100 mM to regenerate the quaternized cellulose beads. The above-mentioned results clearly show that the quaternized cellulose beads prepared in this study can be used as a regenerable adsorbent with high capacity for removal of HA from aqueous medium.

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Section: Comparison With Other Adsorbentsmentioning

confidence: 96%

Quaternization of Porous Cellulose Beads and Their Use for Removal of Humic Acid from Aqueous Medium

et al. 2023

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“…The experimental data were fitted by pseudo-first-order (Equation (4)) and pseudo-second-order models (Equation (5)) to evaluate the adsorption kinetics. The initial adsorption rate h 0 (mg/g·min) ( t →0) is described by Equation (6) [ 33 , 34 ].

where Q e and Q t (mg/g) are the adsorption mass of Au(III) ions at equilibrium or any time t .…”

Section: Resultsmentioning

confidence: 99%

Selective and Effective Gold Recovery from Printed Circuit Boards and Gold Slag Using Amino-Acid-Functionalized Cellulose Microspheres

Hao

Peng

et al. 2023

Polymers

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The hydrometallurgical recovery of gold from electronic waste and gold slag is a hot research topic. To develop a cost-effective and environmentally friendly adsorbent for gold recovery, four types of amino-acid (arginine, histidine, methionine, and cysteine)-functionalized cellulose microspheres were prepared via a radiation technique. The adsorption performance of the amino acid resins toward Au(III) ions was systematically investigated by batch experiments. The amino acid resins could absorb Au(III) ions at a wide pH range. The adsorption process was followed by the pseudo-second-order model and Langmuir model. The theoretical maximum adsorption capacity was calculated as 396.83 mg/g, 769.23 mg/g, 549.45 mg/g, and 636.94 mg/g for ArgR, HisR, MetR, and CysR, respectively. The amino acid resins could effectively and selectively recover trace Au(III) ions from the leaching solutions of printed circuit board and gold slag waste. Lastly, the mechanism underlying amino acid resin’s Au(III) ion recovery capability was investigated by FTIR, XRD, and XPS analyses. This work describes a series of cost-effective gold adsorbents with excellent selectivity and adsorption capacity to boost their practical application.

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“…A specific difference between them is the appearance of two peaks at 1416 and 1476 cm −1 . The former corresponds to the stretching vibration of -C-N groups and the latter corresponds to the asymmetric bending of trimethyl groups of the quaternary ammonium species [22,[28][29][30]. For the XPS analysis, a N1s peak assigned to -N + (CH3)3 groups at 402.7 eV and a Cl2p peak were observed for the quaternized cellulose beads [21,30,31].…”

Section: Preparation Of Quaternized Cellulosementioning

confidence: 99%

Kinetic, Isothermal, and Thermodynamic Analyses of Adsorption of Humic Acid on Quaternized Porous Cellulose Beads

Uchiyama,

Asamoto,

Minamisawa

et al. 2024

Macromol

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Porous cellulose beads were quaternized with glycidyltrimethylammonium chloride (GTMAC), and the potential use of the quaternized cellulose beads as an adsorbent was explored for the removal of humic acid (HA) from aqueous media. The introduction of quaternary ammonium groups was verified by FT-IR and XPS analyses, and their content increased to 0.524 mmol/g-Qcell by increasing the GTMAC concentration. The adsorption capacity of the HA increased with decreasing initial pH value and/or increasing content of quaternary ammonium groups, and a maximum adsorption capacity of 575 mg/g-Qcell was obtained for the quaternized cellulose beads with a content of quaternary ammonium groups of 0.380 mmol/g-Qcell. The removal % value increased with increasing dose of quaternized cellulose beads, and HA was highly removed at higher quaternary ammonium groups. The kinetics of the HA adsorption in this study followed a pseudo-second-order equation, and the process exhibited a better fit to the Langmuir isotherm. In addition, the k2 value increased with increasing temperature. These results emphasize that HA adsorption is limited by chemical sorption or chemisorption. The quaternized cellulose beads were repetitively used for the adsorption of HA without appreciable loss in the adsorption capacity. The empirical, equilibrium, and kinetic aspects obtained in this study support that the quaternized cellulose beads can be applied to the removal of HA.

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Fabrication of Cotton Linter-Based Adsorbents by Radiation Grafting Polymerization for Humic Acid Removal from Aqueous Solution

Cited by 21 publications

References 27 publications

Quaternization of Porous Cellulose Beads and Their Use for Removal of Humic Acid from Aqueous Medium

Quaternization of Porous Cellulose Beads and Their Use for Removal of Humic Acid from Aqueous Medium

Selective and Effective Gold Recovery from Printed Circuit Boards and Gold Slag Using Amino-Acid-Functionalized Cellulose Microspheres

Kinetic, Isothermal, and Thermodynamic Analyses of Adsorption of Humic Acid on Quaternized Porous Cellulose Beads

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