Fly ash modified magnetic chitosan-polyvinyl alcohol blend for reactive orange 16 dye removal: Adsorption parametric optimization

Malek, Nurul Najwa Abd; Jawad, Ali H.; Ismail, Khudzir; Deris, Raja Razuan Raja; ALOthman, Zeid A.

doi:10.1016/j.ijbiomac.2021.08.160

Cited by 140 publications

(38 citation statements)

References 63 publications

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“…To investigate the kinetic mechanism, which controls the adsorption process of ET 2 on the hydrogel, the pseudo-first-order (PFO) [9,35] and pseudo-secondorder (PSO) models were used to test the experiment data [9,[35][36][37]. The pseudo-first-order kinetic model can 1).…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…The rate-determining step may be chemical sorption involving valence forces through sharing or exchange of electrons between adsorbent and adsorbate. It may lead to the inference of a greater affinity and rapid bonding of ET 2 molecules to the surface of poly (TtEGDMA-cross-2-HPMA) [35,46].…”

Section: Adsorption Studiesmentioning

confidence: 99%

“…The n-π interactions (also known as n-π electron donor-acceptor interactions) between oxygen groups on the poly (TtEGDMA-cross-2-HPMA) surface act as electron donors, while the aromatic rings of ET 2 act as electron acceptors (Fig. 7(c)) [35,[49][50].…”

Section: Adsorption Mechanismmentioning

confidence: 99%

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Adsorption of Bemacid Red by Poly Tetra (Ethylene Glycol) Dimethacrylate Crosslinked with 2-Hydroxypropyl Methacrylate Hydrogels: Equilibrium and Kinetic Studies

et al. 2022

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Besides others, textile industries are the primary sources of discharging a massive amount of highly colored wastewater. Adsorption can be considered the most economically favorable technology method for removing dyes from wastewater. This paper reports the synthesis of Poly tetra (ethyleneglycol) dimethacrylate crosslinked with 2-hydroxypropyl methacrylate (Poly (TtEGDMA-cross-2-HPMA)) hydrogelsand its application as a novel sorbent to remove bemacid red (ET2) dye from aqueous solution under various operating conditions. The equilibrium adsorption capacity was found 142.82–883.60 mg ET2 g–1 of 1% TtEGDMA. The adsorbent was characterized using Fourier transform infrared radiation (FTIR) and 13carbon solid-state nuclear magnetic resonance spectra (13C-NMR). The effects of the experimental parameters include dye concentration and crosslinked agent concentration. The kinetic sorption uptake for ET2 by Poly (TtEGDMA-cross-2-HPMA) at various initial dye concentrations was analyzed by pseudo-first and pseudo-second models. Two sorption isotherms, namely the Langmuir and Freundlich isotherms, were applied to the sorption equilibrium data. The sorption kinetics of ET2 onto the hydrogels followed the pseudo-second-order kinetics model (R2 = 0.999) and the adsorption equilibrium data obeyed the Langmuir isotherm model (R2 = 0.999). It can be concluded that Poly (TtEGDMA-cross-2-HPMA) is an alternative economic sorbent to more costly adsorbents used for dye removal in wastewater treatment processes.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Section: Adsorption Studiesmentioning

confidence: 99%

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Adsorption of Bemacid Red by Poly Tetra (Ethylene Glycol) Dimethacrylate Crosslinked with 2-Hydroxypropyl Methacrylate Hydrogels: Equilibrium and Kinetic Studies

et al. 2022

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“…In this condition, chitosan has low chemical and mechanical properties, easily dissolving in acidic pHs and difficult solid/liquid separation after adsorption [13][14][15]. Thus, new methods are constantly being studied to carry out physicochemical modifications to increase the chemical stability of chitosan, increase its surface area and its adsorptive efficiency, such as fly ash modified magnetic chitosan-polyvinyl alcohol blend [15], magnetic chitosan-benzyl/ZnO/Fe 3 O 4 nanocomposite [16], chitosan-glutaraldehyde/activated charcoal composite [17] and polyurethane/chitosan composite foam [18]. A new alternative found in this study was to use Luffa cylindrica as a natural matrix for the immobilization of chitosan.…”

Section: Introductionmentioning

confidence: 99%

Adsorption performance of Food Red 17 dye using an eco-friendly material based on Luffa cylindrica and chitosan

Schio

Martinello

Netto

et al. 2022

Journal of Molecular Liquids

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“…Currently, several methods and processes are used to partially or completely remove dyes from different industrial effluents. Among them, coagulation combined with flocculation [9], precipitation [10], membrane processes filtration [11], advanced oxidation processes [12], adsorption [13], electro-coagulation [14] and electrochemical methods [15,16] are the most common.…”

Section: Introductionmentioning

confidence: 99%

The Adsorptive Removal of Bengal Rose by Artichoke Leaves: Optimization by Full Factorials Design

Khalfaoui

Khelifi

Khelfaoui

et al. 2022

Water

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Currently, the dye industry is increasing its production as a consequence of the growing need for their products in different manufacturing sectors, such as textiles, plastics, food, paper, etc... Thereafter, these industries generate very large volumes of effluents contaminated by these dyes, which require proper removal treatment before final discharge of the effluents into the environment. In this study, artichoke leaves were used as an economical and eco-friendly bio-adsorbent for Bengal Rose (BR) dye removal. Bio-adsorbent obtained from artichoke leaves was ground to powder size. The resulting powder was characterized by different methods, such as Brunauer-Emmett-Teller (BET) surface area analysis, scanning electron microscopy(SEM), X-ray Diffraction (XRD), Fourier transfer infrared (FTIR), pH at point of zero charge (pHpzc), equilibrium pH, iodine number, methylene blue number, phenol number, density, Energy dispersive X-ray spectroscopy (EDX) and Thermo-gravimetric analysis (TGA). Thereafter, the bio-adsorbent was used to study its capability for removing BR dye by testing contact time, initial concentration of dye and temperature. The results show that the saturation of bio-sorbent was reached after 40 min and the removal rate of BR dye by artichoke leaves powder (ALP) was 4.07 mg/g, which corresponds to a removal efficiency of 80.1%. A design of experiences (DOE) based on a two-level full factorial design (23) was used to study the effects of different parameters, such as pH, temperature and bio-adsorbent dosage on BR dye removal efficiency. The obtained results show that the highest removal efficiency was 86.5% for the optimized values of pH (4), temperature (80 °C) and bio-adsorbent dosage (8 g/L). Furthermore, a satisfying accordance between experimental and predicted data was observed. The kinetic and isotherm studies show that the pseudo-second order model simulated adequately the obtained data and it was found that Langmuir and Temkin isotherm models are liable and suitable for evaluating the adsorption process performance. Free energy change of adsorption (ΔG°), enthalpy change (ΔH°) and entropy change (ΔS°) were furthermore calculated to predict the nature of the adsorption process.

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Fly ash modified magnetic chitosan-polyvinyl alcohol blend for reactive orange 16 dye removal: Adsorption parametric optimization

Cited by 140 publications

References 63 publications

Adsorption of Bemacid Red by Poly Tetra (Ethylene Glycol) Dimethacrylate Crosslinked with 2-Hydroxypropyl Methacrylate Hydrogels: Equilibrium and Kinetic Studies

Adsorption of Bemacid Red by Poly Tetra (Ethylene Glycol) Dimethacrylate Crosslinked with 2-Hydroxypropyl Methacrylate Hydrogels: Equilibrium and Kinetic Studies

Adsorption performance of Food Red 17 dye using an eco-friendly material based on Luffa cylindrica and chitosan

The Adsorptive Removal of Bengal Rose by Artichoke Leaves: Optimization by Full Factorials Design

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