Effective removal of Cu(II) from aqueous solution over graphene oxide encapsulated carboxymethylcellulose-alginate hydrogel microspheres: towards real wastewater treatment plants

Allouss, Dalia; Essamlali, Younes; Chakir, Ahmed; Khadhar, Samia; Zahouily, Mohamed

doi:10.1007/s11356-019-06950-w

Cited by 47 publications

(11 citation statements)

References 66 publications

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“…Because the more adsorbent dose providing, the more functional groups and active sites exist, which can combine with MB, leading to an augment of removal rate [49]. However, the total amount of dye molecules is de nite, too much adsorbent will lead to competition of active sites and reduce the amount of MB adsorbed per unit mass [50]. When keep raising the mass of adsorbent from 4 mg to 10 mg, the adsorption property continuous decrease, and the growth rate of MB removal rate slows down.…”

Section: Analysis Of Adsorption Performancementioning

confidence: 99%

WITHDRAWN: Porous biomass gel beads SA/CS/GO construction and bifunction tuning on adsorption and antibacterial properties

Wang

Feng

2022

Preprint

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The organic dye molecules and pathogenic microorganisms exist widely in printing and dyeing wastewater which will bring severe harm to human beings and the water environment if they are not properly treated. A novel SA/CS/GO gel beads with both adsorption and antibacterial functions are synthesized in the special ways. NaHCO3 is selected as porogen to control the density of gel beads formed by the cross-linking of Ca2+. Ag+ is fixed on outside the beads to optimize the inactivation rate of typical strains. The morphology and composite of the beads are characterized through SEM and FT-IR spectrometer. The adsorption properties of the beads accord with the Langmuir isotherm and quasi-secondary model, that means, the adsorption is monolayer behavior and the reaction rate is controlled through the chemical reaction process. The theoretical adsorption liminal value of MB on the beads can reach 847.46 mg/g. In the range of pH value at 3–11, it also has good adsorption ability. After five rounds of adsorption-desorption experiments, the gel beads still remain favorable performance. At the same time, the sterilization rate of the beads is almost 100% for the selected typical strains, even after several adsorption-desorption cycles, it still has a good bactericidal function. So, this kind of new gel beads is easy to recycle, reusable, and has broad application foreground in the field of water purification, sterilization, and adsorption.

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Section: Analysis Of Adsorption Performancementioning

confidence: 99%

WITHDRAWN: Porous biomass gel beads SA/CS/GO construction and bifunction tuning on adsorption and antibacterial properties

Wang

Feng

2022

Preprint

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“…The decrease in weight was due to the elimination of the moisture retained by the materials and the evaporation of adsorbed water. The significant reduction in moisture content was a result of a strong hydrogen bonding interaction [ 29 ]. Weight loss was found to be less than 20% in the hydrogel at 200°C.…”

Section: Resultsmentioning

confidence: 99%

“…Strong stretching loss occurred in the nonherbal hydrogel, hydrogel (10 : 1), and hydrogel (1 : 1) between 240 and 380°C, and the values for weight loss were 49.79%, 45.45%, and 53.90%, respectively. Weight loss measurements began at approximately 240°C and ended at approximately 380°C, mainly due to depolymerization of the carbohydrate polymer [ 26 , 29 ]. The weight loss from 240°C to 380°C was due to the remaining fraction of volatile compounds of herbal extract and nondegraded CMC side branches [ 30 ].…”

Section: Resultsmentioning

confidence: 99%

A Novel Biocompatible Herbal Extract‐Loaded Hydrogel for Acne Treatment and Repair

Lin

Gao

et al. 2021

Oxidative Medicine and Cellular Longevity

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A novel herbal extract-loaded gel containing several biofunctional extracts, including green tea, Zingiber officinale Rosc, Phyllanthus emblica, and salicylic acid, was developed for acne vulgaris. These natural raw materials were blended with suitable dosages of gelatin and carboxymethyl cellulose (CMC) to produce a biocompatible herbal gel. The physical chemistry properties of the hydrogel were determined by Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), rheometry, and scanning electron microscopy (SEM), and the hydrogel showed good mechanical and morphological characteristics. The herbal extract-loaded hydrogel mimicked extracellular matrix properties and showed good antioxidant and anti-inflammatory properties and various advantages, serving as a potential wound dressing material because of its high moisture retention ability, wound exudate absorption behavior, and biocompatibility. It exhibited moderate-high antioxidative and anti-inflammatory qualities that were important for dermis wound closure. The clinical trial results showed that most patients experienced moderate to high healing rates, and four of twenty-four individuals (16.67%) had recovery area ratios greater than 80%. This herbal extract-loaded hydrogel has effective ingredients and excellent mechanical properties as a bioactive dressing agent for acne treatment.

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“…After adsorption of metal ions, FTIR spectra of GO-SA-M complexes was differ from the GO-SA spectrum. Where, the intensity of the bands in the region 1740-1100 highly weaken (Allouss et al, 2020). These observations may be due to the complexation interaction between the various function groups of the GO-SA composite and the M-ions (Cui et al, 2015), see Fig.…”

Section: Ftirmentioning

confidence: 92%

Alginate Modified Graphene Oxide for Rapid and Effective Sorption of Some Heavy Metal Ions from Aqueous Solution

Abd-Elhamid

Elgoud

Aly

2022

Preprint

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Herein, we investigated a facile strategy to modify the graphene oxide (GO) with sodium alginate (SA) through using tetraethylorthosilicate (TEOS) as binding agent. The GO-SA was highly loaded with carboxylated (-COO−Na+) groups which permitted for fast and efficient interaction with the metal ions. Therefore, the prepared composite was employed as an efficient adsorbent to uptake of some heavy metal from aqueous solution. The as-synthesized GO-SA was characterized with various advanced techniques before and after the removal process. The analysis of the experimental data showed that, the Langmuir model excellent fit the adsorption data with maximum adsorption capacities of 887.21, 161.25 and 139.62 mg g−1 for Pb2+, Zn2+ and Cd2+, respectively. Moreover, the GO-SA presented a good regeneration and reuse ability with enhancing in the removal percent for all the studied metal ions. In addition, the prepared composite showed a suitable selectivity for Pb2+ from Zn2+ and Cd2+ co-existed solution.

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Effective removal of Cu(II) from aqueous solution over graphene oxide encapsulated carboxymethylcellulose-alginate hydrogel microspheres: towards real wastewater treatment plants

Cited by 47 publications

References 66 publications

WITHDRAWN: Porous biomass gel beads SA/CS/GO construction and bifunction tuning on adsorption and antibacterial properties

WITHDRAWN: Porous biomass gel beads SA/CS/GO construction and bifunction tuning on adsorption and antibacterial properties

A Novel Biocompatible Herbal Extract‐Loaded Hydrogel for Acne Treatment and Repair

Alginate Modified Graphene Oxide for Rapid and Effective Sorption of Some Heavy Metal Ions from Aqueous Solution

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