Effective removal of cationic dyes using carboxylate-functionalized cellulose nanocrystals

Qiao, Han; Zhou, Yanmei; Fang, Yu; Wang, Enze; Min, Yinghao; Huang, Qingjiu; Pang, Ling; Ma, Tongmei

doi:10.1016/j.chemosphere.2015.07.078

Cited by 227 publications

(83 citation statements)

References 45 publications

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“…Carboxylated CNCs with a high COOH content of 2.1 mmol/g, prepared using TEMPO-mediated oxidation, were found to result in a significantly higher uptake (769 mg/g at pH = 9) of the cationic dye methylene blue, compared to CNCs with sulfate groups on their surfaces (118 mg/g at pH = 9) [70]. CNCs with carboxylic acid functionality (carboxyl content of 3.4 mmol/g), prepared by esterification of surface hydroxyl groups with maleic anhydride [71], displayed a high uptake capacity for several cationic dyes, e.g., crystal violet, methylene blue, malachite green, and basic fuchsin, with a maximum crystal violet uptake of 244 mg/g at pH = 6. Carboxylated CNCs prepared by one-step oxidation [72] using ammonium persulfate showed an adsorption capacity of 101 mg/g for methylene blue, at a neutral pH.…”

Section: Sorption Of Pollutants By Functionalized Nanocellulosementioning

confidence: 99%

Nanocellulose-Based Materials for Water Purification

et al. 2017

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Nanocellulose is a renewable material that combines a high surface area with high strength, chemical inertness, and versatile surface chemistry. In this review, we will briefly describe how nanocellulose is produced, and present—in particular, how nanocellulose and its surface modified versions affects the adsorption behavior of important water pollutants, e.g., heavy metal species, dyes, microbes, and organic molecules. The processing of nanocellulose-based membranes and filters for water purification will be described in detail, and the uptake capacity, selectivity, and removal efficiency will also be discussed. The processing and performance of nanocellulose-based membranes, which combine a high removal efficiency with anti-fouling properties, will be highlighted.

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Section: Sorption Of Pollutants By Functionalized Nanocellulosementioning

confidence: 99%

Nanocellulose-Based Materials for Water Purification

et al. 2017

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“…Among the natural materials, biopolymers have been recently investigated for preparation of biodegradable adsorbents, Biodegradable polymer-based adsorbents, including starchgraft-poly (acrylic acid) hydrogel 25 , chitosan magnetic composite microspheres 26 , glutamic acid modified chitosan magnetic composite microspheres 26 , carboxylatefunctionalized cellulose nanocrystals 27 , alginate/acid activated bentonite composite beads 28 , guar gum grafted sodium acrylate 29 , kappa-Carrageenan beads 30 have been developed for removal of crystal violet from aqueous samples. Cellulose is one of the most abundant and significant fibrous material in nature which has high mechanical strength, high surface area, biodegradability, non-toxicity and low cost 31 .…”

Section: Introductionmentioning

confidence: 99%

Removal of crystal violet from aqueous solutions using functionalized cellulose microfibers: a beneficial use of cellulosic healthcare waste

2016

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In this research, preparation of functionalized cellulosic microfibers (FCMFs) was proposed as a beneficial use of cellulosic healthcare wastes for removal of crystal violet from aqueous solutions. The functionalization process was performed using sulfonation reaction by chlorosulfonic acid. The results of scanning electron microscopy revealed a significant deformation in fibrous structure of cellulose as a result of sulfonation process. The functionalization of cellulosic fibers was confirmed by investigation of FTIR spectra of cotton and FCMFs. The charge density of FCMFs was calculated from its sulfur content which was measured by CHNS elemental analyzer. The influence of factors affecting the adsorption process such as pH, salt content, contact time, initial dye concentration and temperature were examined. The adsorption capacity was increased by increasing the salt content and temperature. The equilibrium was achieved after 60 min of mixing. The equilibrium adsorption data were well described by Freundlich, Redlich-Peterson isotherms. The maximum adsorption capacity was found to be 872 mg g -1 . The adsorption kinetic data were well fitted to pseudo-second-order and Elovich kinetic models. Thermodynamic parameters indicated that the adsorption process was spontaneous and endothermic in nature. The residual root-mean-square error (RMSE), average absolute relative error (AARE), cross-correlation coefficient (CCC, R) and chi-square test (χ2) were used to evaluate the fitting of the adsorption isotherms and kinetic models to the experimental results. The saturated adsorbent was regenerated by acid washing (HCl, 1 mol L -1 ) and removal efficiency was decreased slightly in each batch adsorption/regeneration cycle.

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“…Because of its macro structure, the CP bio-adsorbent was easily separated after the adsorption experiment. It was found that 50% ethanol can be applied as desorption agent to regeneration the MB and AR1 from the bio-adsorbent under agitating at room temperature for 1 h (Qiao et al 2015). To realize the recyclability of the bio-adsorbent, consecutive adsorption-desorption recycles were carried out five times.…”

Section: Desorption and Recyclabilitymentioning

confidence: 99%

“…For example, Gopakumar et al (2017) synthesized meldrum's acid modified cellulose nanofiber-based polyvinylidene fluoride microfiltration membrane via nonsolvent assisted methodology, which was found to adsorb 4 mg·g -1 from 10 mg·L -1 crystal violet aqueous solution. The carboxylate-functionalized cellulose nanocrystals were demonstrated to have the effective removal capacity for cationic dyes (Qiao et al 2015). Yu et al (2016) studied carboxylated cellulose nanocrystals for their use as cationic dye adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Efficient Removal of Cationic and Anionic Dyes from Aqueous Solution Using Cellulose-g-p(AA-co-AM) Bio-Adsorbent

Liu

Zhang

et al. 2017

BioResources

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The removal of cationic methylene blue (MB) and anionic acid red 1 (AR1) dyes from aqueous solution was studied using cellulose-g-p(AA-co-AM) bio-adsorbent (CP bio-adsorbent). The CP bio-adsorbent with surface multiple functional groups and macroporous network structure was synthesized via grafting the acrylic acid (AA) and acrylamide (AM) onto cellulose molecules. The adsorption behavior of the bio-adsorbent to dyes in the aqueous solution was studied. The effects of solution pH, temperature, initial dye concentration, and contact time on the adsorption capacity of the bio-adsorbent were investigated. Due to the abundant functional groups and macroporous network structure, the CP bioadsorbent exhibited remarkable adsorption performance for the removal of type dyes with an equilibrium adsorption capacity of 998 mg·g -1 for MB and 523 mg·g -1 for AR1. The kinetic studies revealed that the adsorption of dyes was exactly described by a pseudo-second-order kinetic model. Comparison with other bio-adsorbents confirmed that the eco-friendly CP bio-adsorbent possessed excellent potential for water purification.

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Effective removal of cationic dyes using carboxylate-functionalized cellulose nanocrystals

Cited by 227 publications

References 45 publications

Nanocellulose-Based Materials for Water Purification

Nanocellulose-Based Materials for Water Purification

Removal of crystal violet from aqueous solutions using functionalized cellulose microfibers: a beneficial use of cellulosic healthcare waste

Efficient Removal of Cationic and Anionic Dyes from Aqueous Solution Using Cellulose-g-p(AA-co-AM) Bio-Adsorbent

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