Removal of Ca(II) and Mg(II) from aqueous single metal solutions by mercerized cellulose and mercerized sugarcane bagasse grafted with EDTA dianhydride (EDTAD)

Júnior, Osvaldo Karnitz; Gurgel, Leandro Vinícius Alves; Gil, Laurent Frédéric

doi:10.1016/j.carbpol.2009.07.048

Cited by 90 publications

(22 citation statements)

References 27 publications

(32 reference statements)

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“…During adsorption, there is the amassing of certain element or substance in the interface between two phases, i.e., between the solid surface and the adjacent solution (Sousa et al 2007 ;Karnitz et al 2009 ). Biosorption has become known as a potential and cost-effective alternative for heavy metal exclusion from aqueous solution.…”

Section: Plant-based Metal Adsorbentsmentioning

confidence: 99%

Phytoremediation Using Algae and Macrophytes: I

2015

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Section: Plant-based Metal Adsorbentsmentioning

confidence: 99%

Phytoremediation Using Algae and Macrophytes: I

2015

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“…e main advantage of these oxidized materials (SBox and Cox) comparing to other carboxylated materials prepared by our research group [14,15,20,22,[42][43][44][45] is that carboxylic acid functions in SBox and Cox are mainly from the oxidation of primary hydroxyl groups (R-CH 2 OH) of cellulose (in SB or Cel). On the contrary, when carboxylic acid groups are introduced in the Cel or SB through esteri cation reaction with cyclic carboxylic acid anhydrides, the application of esteri ed Cel or SB is limited to a pH range where the ester groups may not be easily hydrolyzed in the aqueous phase, e.g., 2-9 [46].…”

Section: Calculation Of Variation In Standard Free Energy Of Adsorptionmentioning

confidence: 99%

Oxidized Renewable Materials for the Removal of Cobalt(II) and Copper(II) from Aqueous Solution Using in Batch and Fixed-Bed Column Adsorption

Rodrigues

Martins

Furtado

et al. 2020

Advances in Polymer Technology

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Batch and continuous adsorption of Co2+ and Cu2+ from aqueous solutions by oxidized sugarcane bagasse (SBox) and oxidized cellulose (Cox) were investigated. The oxidation reaction of sugarcane bagasse and cellulose was made with a mixture of H3PO4‒NaNO2 to obtain SBox and Cox, with the introduction of high number of carboxylic acid functions, 4.5 and 4.8 mmol/g, respectively. The adsorption kinetics of Co2+ and Cu2+ on SBox and Cox were modeled using two models (pseudo-first-order and pseudo-second-order) and the rate-limiting step controlling the adsorption was evaluated by Boyd and intraparticle diffusion models. The Sips and Langmuir models better fitted the isotherms with values of maximum adsorption capacity Qmax of 0.68 and 0.37 mmol/g for Co2+ and 1.20 and 0.57 mmol/g for Cu2+ adsorption on Cox and SBox, respectively. The reuse of both spent adsorbents was evaluated. Adsorption of Cu2+ and Co2+ on SBox in continuous was evaluated using a 22 factorial design with spatial time and initial metal concentration as independent variables and Qmax and effective use of the bed as responses. The breakthrough curves were very well described by the Bohart–Adams original model and the Qmax values for Co2+ and Cu2+ were 0.22 and 0.55 mmol/g. SBox confirmed to be a promising biomaterial for application on a large scale.

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“…The functionalization of MCC with EDTAD was carried out according to the method of Gil's group, 35 with slight modication. The functionalization of MCC with EDTAD was carried out according to the method of Gil's group, 35 with slight modication.…”

Section: Preparation Of Menmentioning

confidence: 99%

Anti-degradation gelatin films crosslinked by active ester based on cellulose

2015

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Functionalization of microcrystalline cellulose (MCC) with EDTA dianhydride (EDTAD) was first achieved using an esterification reaction. N-Hydroxysuccinimide-activated MCC-EDTAD ester (MEN), a novel macromolecule crosslinker based on MCC, was synthesized for the modification of gelatin films. The reaction between gelatin and MEN was verified by the residual free amino test, FTIR and XRD spectra.The introduction of MEN into gelatin decreased the film degradation ratio and increased its thermal stability, flexibility, hydrophobicity, light barrier performance and water uptake ability. Additionally, SEM images proved the successful surface grafting reaction and degradation phenomenon. This unique gelatin film material with advanced properties broke the limitation of the blending method for modification of gelatin with macromolecules and broadened its application as a novel sustained-release material.

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Removal of Ca(II) and Mg(II) from aqueous single metal solutions by mercerized cellulose and mercerized sugarcane bagasse grafted with EDTA dianhydride (EDTAD)

Cited by 90 publications

References 27 publications

Phytoremediation Using Algae and Macrophytes: I

Phytoremediation Using Algae and Macrophytes: I

Oxidized Renewable Materials for the Removal of Cobalt(II) and Copper(II) from Aqueous Solution Using in Batch and Fixed-Bed Column Adsorption

Anti-degradation gelatin films crosslinked by active ester based on cellulose

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