Microwave-Assisted Synthesis of Polyethyleneimine Grafted Chitosan Beads for the Adsorption of Acid Red 27

Yusof, Nurul Huda Mohd; Foo, K.Y.; Wilson, Lee D.; Hameed, B.H.; Hussin, M. Hazwan; Sabar, S.

doi:10.1007/s10924-019-01628-3

Cited by 34 publications

(15 citation statements)

References 39 publications

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“…The maximum specific and volumetric biosorption capacities of AR27 were observed at inlet AR27 concentrations ranging from 50 to 400 mg/L ( ), and were approximately 66 mg/g and 12,390 mg/L, respectively (Table 4 ). The maximal specific biosorption capacity for AR27 in the continuous LEC packed-bed system is similar to that achieved in a batch system (69.1 mg/g) 25 , and is considerably higher than those reported in a few studies on batch AR27 adsorption, including those using peanut hull 53 , de-oiled soya, bottom ash 54 , raw and -pretreated pineapple peels and coconut shells 55 , alumina reinforced polystyrene 24 , dull pink clay 8 , polyethyleneimine grafted chitosan beads 14 , activated carbon web produced from acrylic fibrous waste 26 , nanoparticles 28 , and Arachis hypogaea shells 27 as adsorbents.…”

Section: Resultssupporting

confidence: 65%

“…Furthermore, the discharge of AR27-containing effluents into water bodies reduces the penetration of sunlight, which affects the viability and photosynthetic process of aquatic plants, and deprives aquatic animals of the oxygen required for their vital functions 13 . Additionally, the complex chemical structure of AR27, which includes an azo group and conjugated benzene ring, renders it extremely recalcitrant to degradation, because of which it continues to persist in the environment 7 , 14 . Thus, it is crucial to remove AR27 from industrial effluents before their discharge into water bodies, to prevent it from having harmful effects on the environment and health.…”

Section: Introductionmentioning

confidence: 99%

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Continuous biosorption of acid red 27 azo dye by Eichhornia crassipes leaves in a packed-bed column

Ramírez-Rodríguez

Morales-Barrera

Cristiani‐Urbina

2021

Sci Rep

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In this work, the biosorption behavior of acid red 27 (AR27) dye using Eichhornia crassipes leaves (LECs) in a packed-bed column was investigated by varying relevant operational parameters and assessment of mathematical models. Results showed that the zero-charge point of LECs was 2.37 and that optima pH and volumetric flux of the influent solution for AR27 biosorption were 2.0 and $$56.5\ \hbox {L}/\hbox {m}^{2}\cdot \hbox {h}$$ 56.5 L / m 2 · h , respectively. The maximum specific and volumetric biosorption capacities were observed at influent AR27 concentrations and with LEC bed heights ranging between 50 and 400 mg/L and 2 and 8 cm, respectively. It was also found that if LEC bed height was increased and volumetric flux and AR27 concentration of the influent solution decreased, service and saturation time increased. Modeling results revealed that the Thomas, bed depth service time, Yoon–Nelson, dose-response, and logistic models accurately described the dynamic performance of the packed-bed column in terms of pH, AR27 concentration, and volumetric flux of influent AR27 solution, as well as that of LEC bed height. The findings revealed that LECs exhibited remarkable potential for the biosorption of AR27 from aqueous solutions in a packed-bed column and could potentially be useful for the treatment of AR27-laden wastewater.

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Section: Resultssupporting

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Continuous biosorption of acid red 27 azo dye by Eichhornia crassipes leaves in a packed-bed column

Ramírez-Rodríguez

Morales-Barrera

Cristiani‐Urbina

2021

Sci Rep

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“…The quantity of the dye adsorbed was then calculated. In addition, the experimental data obtained from this optimisation experiment were applied to adsorption isotherms to study the adsorbent–adsorbate interactions 1,30 …”

Section: Methodsmentioning

confidence: 99%

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Saheed

Latip

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND A green synthesis approach involving 1‐butyl‐3‐methyl imidazolium acetate (BmimA) medium was utilised to prepare mesoporous chitosan/activated charcoal composite powder (ChA) and bead (ChB) for the removal of acid blue 25 (AB25) dye from aqueous solution. The composite’s characteristics were examined using Fourier transform infrared (FTIR), scanning electron microscopy (SEM), energy dispersive X‐ray analysis, X‐ray diffraction and Brunauer–Emmett–Teller (BET) analysis. The influence of initial concentration of the dye, pH, contact time and adsorbent dosage on the adsorption and the composite’s stability in acidic and basic solutions was also examined. RESULTS FTIR revealed that chitosan and activated charcoal were connected through O H, N  H, CO and C═O, while AB25 adhered to ChA and ChB through the hydroxyl and amino functional groups. SEM images of ChA and ChB revealed rough‐like surfaces with randomly distributed pores. BET analysis revealed that ChA and ChB are mesoporous, with pore sizes of 2.18 and 2.26 nm. The composites were stable in acidic and basic solutions, and adsorption of AB25 onto the adsorbents was more effective at pH 2. Regeneration of the adsorbents was also influential in NaOH solution. The amount of BmimA used in the composite’s preparation has limited influence on the effectiveness of ChA and ChB for AB25 uptake. The adsorption is best described by Langmuir isotherm in both ChA and ChB with qmax of 3030.3 and 3703.7 mg g−1 respectively, although ChB also conforms to the Freundlich isotherm. The adsorption kinetics fitted well into the pseudo‐second‐order model. CONCLUSION The prepared modified chitosan/activated charcoal powder and bead were able to adsorb the AB25 dye better than other chitosan‐based materials. © 2022 Society of Chemical Industry (SCI).

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“…The properties of β-CD have been extended to polymeric forms via cross-linking, grafting, or non-covalent self-assembly with suitable reagents to yield framework materials with unique inclusion and solid-phase extraction (SPE) properties [ 23 , 24 ]. CS is a linear polysaccharide composed of randomly distributed β-(1 → 4)-linked D-glucosamine and N-acetyl-D-glucosamine units that can be synthetically modified due to its abundant amine and hydroxyl groups [ 25 , 26 ]. Ionic and covalently cross-linked CS frameworks have been reported with adsorption sites that possess variable hydrophile-lipophile balance (HLB), in accordance with the nature of the cross-linker.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Waterborne Trihalomethanes Using Modified Polysaccharide Adsorbents

2021

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The adsorptive removal of trihalomethanes (THMs) from spiked water samples was evaluated with a series of modified polysaccharide adsorbents that contain β-cylodextrin or chitosan. The uptake properties of these biodegradable polymer adsorbents were evaluated with a mixture of THMs in aqueous solution. Gas chromatography employing a direct aqueous injection (DAI) method with electrolytic conductivity detection enabled quantification of THMs in water at 295 K and at pH 6.5. The adsorption isotherms for the polymer-THMs was evaluated using the Sips model, where the monolayer adsorption capacities ranged between 0.04 and 1.07 mmol THMs/g for respective component THMs. Unique adsorption characteristics were observed that vary according to the polymer structure, composition, and surface chemical properties. The modified polysaccharide adsorbents display variable molecular recognition and selectivity toward component THMs in the mixed systems according to the molecular size and polarizability of the adsorbates.

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Microwave-Assisted Synthesis of Polyethyleneimine Grafted Chitosan Beads for the Adsorption of Acid Red 27

Cited by 34 publications

References 39 publications

Continuous biosorption of acid red 27 azo dye by Eichhornia crassipes leaves in a packed-bed column

Continuous biosorption of acid red 27 azo dye by Eichhornia crassipes leaves in a packed-bed column

Mesoporous chitosan/activated charcoal powder and bead modified in 1‐butyl‐3‐methylimidazolium acetate for the adsorption of acid blue 25 from an aqueous solution

Adsorption Studies of Waterborne Trihalomethanes Using Modified Polysaccharide Adsorbents

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