Functionalized cellulose nanocrystals as a novel adsorption material for removal of boron from water

Wahib, Sara A.; Da’na, Dana A.; Ashfaq, Mohammad Y.; Al-Ghouti, Mohammad A.

doi:10.1016/j.cscee.2021.100121

Cited by 9 publications

(3 citation statements)

References 29 publications

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“…As per the results obtained by measuring the surface charge of the adsorbent CNC, the ζ-potential value of CNC was observed to be – 22 mV in water and varies with the pH of the adsorbent, as depicted in Table S2. Because of the negatively charged sulfate group on the surface of CNC, it attracts the positively charged JG dye, as shown in Figure a. ,, The kinetic and isotherm models reveal that adsorption follows a monolayer phenomenon by following the pseudo-second-order model and Langmuir isotherm model. , Also, the temperature indicates that the adsorption is physisorption, an exothermic and spontaneous process of adsorption based on the various thermodynamic parameters as described above. , The adsorption–desorption of the JG dye up to four experiments was performed to check the reusability efficiency of CNC as it reduces the overall cost of treatment. The CNC was saturated with JG within 120 min and after that it was washed with 0.5 M HCl solution followed by deionized (DI) water to remove the excess dye for regeneration.…”

Section: Resultsmentioning

confidence: 99%

“…Because of the negatively charged sulfate group on the surface of CNC, it attracts the positively charged JG dye, as shown in Figure 8a. 31,66,67 The kinetic and isotherm models reveal that adsorption follows a monolayer phenomenon by following the pseudo-second-order model and Langmuir isotherm model. 57,68 Also, the temperature indicates that the adsorption is physisorption, an exothermic and spontaneous process of adsorption based on the various thermodynamic parameters as described above.…”

Section: Effect Of Ph Change and Removal Of The Jg Dye In Spiked Indu...mentioning

confidence: 99%

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Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Aggarwal

Garg

Saini

et al. 2022

Ind. Eng. Chem. Res.

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Cellulose nanocrystals (CNCs) as a bio-based adsorbent material have been synthesized at mild temperature reaction conditions using acid hydrolysis of microcrystalline cellulose (MCC) by sulfuric acid. CNCs by a simple acid treatment become enriched with negatively charged surface functionalities and shows good adsorption capacity. The CNCs have been characterized by X-ray photoelectron spectroscopy, Fourier transform Infrared, X-ray diffraction spectroscopy, and thermogravimetric analysis for their chemical composition, functionality, crystallinity, and stability, respectively. Sulfated CNCs have been used to selectively remove the toxic Janus Green (JG) dye tested out of many other dyes via adsorption and showed a Langmuir adsorption capacity of ∼77 mg g. −1 The effects of pH, temperature, concentration, and loading capacity have also been explored. The adsorption kinetics follows the pseudo-second-order pathway and thermodynamic analysis of the system indicates that the process is exothermic and spontaneous. Moreover, for the practical applicability of the proposed method, the adsorption of JG was also analyzed in four spiked industrial samples collected from nearby textile industries, where they removed more than 80% of the dye from the complex industrial water system.

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Ph Change and Removal Of The Jg Dye In Spiked Indu...mentioning

confidence: 99%

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Aggarwal

Garg

Saini

et al. 2022

Ind. Eng. Chem. Res.

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show abstract

“…Cellulose is a natural polymer abundantly present on the Earth [ 13 ]. This linear polysaccharide consists of anhydroglucose units connected by β-1,4-glycosidic bonds [ 8 , 14 , 15 , 16 ]. Most cellulosic materials are characterized by biodegradability, biocompatibility and nontoxicity [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Protein Adsorption Performance of a Novel Functionalized Cellulose-Based Polymer

et al. 2022

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Dicarboxymethyl cellulose (DCMC) was synthesized and tested for protein adsorption. The prepared polymer was characterized by inductively coupled plasma atomic emission spectrometry (ICP-AES), attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) and solid state nuclear magnetic resonance (ssNMR) to confirm the functionalization of cellulose. This work shows that protein adsorption onto DCMC is charge dependent. The polymer adsorbs positively charged proteins, cytochrome C and lysozyme, with adsorption capacities of 851 and 571 mg g−1, respectively. In both experiments, the adsorption process follows the Langmuir adsorption isotherm. The adsorption kinetics by DCMC is well described by the pseudo second-order model, and adsorption equilibrium was reached within 90 min. Moreover, DCMC was successfully reused for five consecutive adsorption–desorption cycles, without compromising the removal efficiency (98–99%).

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Recent advances in boron removal in aqueous media. An approach to the adsorption process and process optimization

de Azevedo,

de Urzedo,

da Luz Mesquita

et al. 2024

Environ Sci Pollut Res

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Functionalized cellulose nanocrystals as a novel adsorption material for removal of boron from water

Cited by 9 publications

References 29 publications

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Cellulose Nanocrystals Derived from Microcrystalline Cellulose for Selective Removal of Janus Green Azo Dye

Protein Adsorption Performance of a Novel Functionalized Cellulose-Based Polymer

Recent advances in boron removal in aqueous media. An approach to the adsorption process and process optimization

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