Kinetic, isotherm, and thermodynamic studies of the adsorption of dye from aqueous solution by propylene glycol adipate-modified cellulose aerogel

Tang, Meizhen; Jia, Ruolan; Kan, Hongyuan; Liu, Zhenlu; Shi-Xin, Yang; Sun, Lianglun; Yang, Yuewei

doi:10.1016/j.colsurfa.2020.125009

Cited by 43 publications

(13 citation statements)

References 50 publications

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“…However, the linear correlation coefficient of the Langmuir model (R 2 = 0.9984) is remarkably greater than that of the Freundlich model (R-square = 0.8444). It clearly represents that PCA has a similar surface of adsorption capacity at different positions and follows a well-fit Langmuir isothermal model [62].…”

Section: Adsorption Isothermmentioning

confidence: 66%

“…It clearly clarifies that the hydrogen clinkers interior the adsorbent is broke down due to high temperature, and the pyretic movement inside the material enhances, lots of dye molecules are desorbed, thus the adsorption ability significantly declines. ΔH o = 129.441 kJ/mol indicated that the adsorption process of PCA on CR was an endothermic reaction [62]. According to Geng et al, the values of ∆G o at 25-55 ℃ equaled -7.657, -8.047, -8.437, and -8.827 kJ/mol, implying the spontaneous nature of Cu 2+ ion adsorption by bleached kraft bamboo pulp aerogel.…”

Section: 4mentioning

confidence: 97%

“…Under acidic aqueous, PCA was protonated with positive point charges and strongly adsorbed CR. Under basic conditions, the PCA contained a large amount of -OH on the surface, which generated repulsive electrostatic force with the negative CR dye, resulting in a speedy reduction in adsorption capacity [62]. The highest removal rate of MB of robust cellulose sponge was attained 99.92 % at pH solution of 11, but the removal rate of CV was lower (92.74%).…”

Section: 2mentioning

confidence: 98%

“…Following the Thomas model, the cellulose aerogel from coconut fibers had the rate constant of MB adsorption of 0.00159 mL/mg.min and the equilibrium adsorption capacity of 62 g/g [23]. The modified wheat straw cellulose aerogel via poly(propylene glycol adipate) as a cross-linker had not only stability of network structure but also improved CR adsorption ability (reaching 120 mg/g) [62].…”

Section: 2mentioning

confidence: 99%

“…The ΔH change in the ranges of 20-40 kJ/mol and 80-400 kJ/mol represents physisorption and chemisorption. The positive ΔS performs an enhancing disorder at the solid/liquid interface during the adsorption process [62,72].…”

Section: 4mentioning

confidence: 99%

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Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Nguyen

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Water pollution caused by inorganic and organic compounds affects seriously health risks and the destruction of the water balance of the ecosystem. Water remediation is one of the greatest challenges of the modern age, which is faced by several countries in over the world. Many advanced technologies have been developed in recent years to manage this alarming problem. One of the recent research directions is to utilize agricultural waste, which is an abundant, low-cost, eco-friendly source, to manufacture cellulose aerogels for the removal of heavy metals, dyes, and oils from contaminated water. This review paper focuses on the latest green fabrication of bio-aerogels from various cellulose-based plant waste and studies on the kinetics and influence of factors such as contact time, pH solution, initial concentration, and temperature on the adsorption process to better understand the mechanisms of water treatment by the cellulose aerogels. Based on the discussion and summary, the potential of agro-waste sources in their value-added chain by developing efficient water treatment cellulose aerogels is comprehensively overviewed.

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Section: Adsorption Isothermmentioning

confidence: 66%

Section: 4mentioning

confidence: 97%

Section: 2mentioning

confidence: 98%

Section: 2mentioning

confidence: 99%

Section: 4mentioning

confidence: 99%

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Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Nguyen

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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Hierarchical Porous Aerogels With Multiple Adsorptive Interactions for Dye Wastewater Purification

Gao,

Xu,

Ren

et al. 2024

Chemistry A European J

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Aerogels present a huge potential for removing organic dyes from printing and dyeing wastewater (PDW). However, the preparation of aerogels with multiple dye adsorption capabilities remains a challenge, as many existing aerogels are limited to adsorbing only a single type of dye. Herein, a composite aerogel (CG/T‐rGO) with the addition of carboxymethyl chitosan, gelatin and tannic acid reduced graphene oxide (T‐rGO) was synthesized by freeze‐drying technology. The electrostatic interactions between dye molecular and GEL/CMCS (CG) networks, as well as the supramolecular interactions (H‐bonds, electrostatic interactions and π‐π stacks) between T‐rGO, have endowed the aerogel with the ability to adsorb multiple types of dye, such as methylene blue (MB) and methyl orange (MO). Results exhibited that the prepared CG/T‐rGO aerogel possessed strong mechanical strength and a porous 3D network structure with a porosity of 96.33%. Using MB and MO as adsorbates, the adsorption capacity (88.2mg/g and 66.6 mg/g, respectively) and the mechanism of the CG/T‐rGO aerogel were investigated. The adsorption processes of aerogel for MB and MO were shown to follow the pseudo‐second‐order kinetic model and Langmuir isotherm model, indicating the chemical adsorption of a monolayer. The proposed aerogel in this work has promising prospects for dye removal from PDW.

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Rational design of in‐situ‐modified resorcinol formaldehyde aerogels for removing chlortetracycline antibiotics from aqueous solutions

Behzadi

Motlagh

Raef

et al. 2022

Polymer Engineering & Sci

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Organic resorcinol formaldehyde aerogels with distinct pore sizes/surface areas in different ratios of (resorcinol/catalyst) R/C = 300, 400, 600 and (resorcinol/water) R/W = 2 were prepared utilizing sol–gel technique and in‐situ modified by incorporating 1 wt% meta‐phenylenediamine. The porous nanostructure, surface area, and pore size of the aerogels were characterized by scanning electron microscopy, Brunauer–Emmett–Teller, and Barrett–Joyner–Halenda techniques. Raman spectroscopy, Fourier transform infrared spectroscopy, and X‐ray diffraction were employed to get understanding into the chemical structure. Furthermore, we investigated the removal percentage of antibiotic via UV–vis spectroscopy. The ability of modified aerogels in removing chlortetracycline (CTC) at different pH values (2–12), contact times (2–24 h), initial concentrations of CTC (50–100 mg L−1), and the adsorbent dose (2–10 mg) was evaluated. Consequently, the adsorption optimum conditions were found, the adsorption isotherms were measured, and isotherm models were fitted to the results to interpret the kinetics of adsorption. The obtained fitting parameters using the pseudo‐second‐order model revealed a well alignment with the experimental data. Finally, we demonstrated that the modified‐aerogels have a high capacity in CTC antibiotics removal up to 90% and an adsorption capacity of 440 mg g−1 as well as an efficient regeneration capacity for five consecutive cycles without significant degradation of the adsorption properties.

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Kinetic, isotherm, and thermodynamic studies of the adsorption of dye from aqueous solution by propylene glycol adipate-modified cellulose aerogel

Cited by 43 publications

References 50 publications

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Recent Developments in Water Treatment by Cellulose Aerogels from Agricultural Waste

Hierarchical Porous Aerogels With Multiple Adsorptive Interactions for Dye Wastewater Purification

Rational design of in‐situ‐modified resorcinol formaldehyde aerogels for removing chlortetracycline antibiotics from aqueous solutions

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