Cross-linked graphene oxide sheets via modified extracted cellulose with high metal adsorption

Yakout, Amr A.; El-Sokkary, Ramadan H.; Shreadah, Mohamed A.; Hamid, Omnia G. Abdel

doi:10.1016/j.carbpol.2017.05.004

Cited by 54 publications

(22 citation statements)

References 34 publications

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“…The first one is the complexation and/or ion-exchange of the metal ions by the deprotonated hydroxyl, amine groups in sorbents. The second mechanism is the adsorption of the metal ions by nano-manganese dioxide in CA-NMO, g-CA-EN-NMO, g-CA-DETA-NMO, g-CA-TETA-NMO and g-CA-TEPA-NMO (17,18,25).…”

Section: Resultsmentioning

confidence: 99%

“…The adsorption process becomes less efficient after 30 min due to complete saturation of the adsorbent surface with the target metal ion. The removal of Cu(II) ions by CA, CA-NMO, g-CA-EN-NMO, g-CA-DETA-NMO, g-CA-TETA-NMO and g-CA-TEPA-NMO was found to proceed via one adsorption step (17,18).…”

Section: Effect Of Contact Timementioning

confidence: 97%

“…The percentage removal is increased from 18.4% to 37.8% in case of CA, 14.9% to 57.4% for CA-NMO, 9.8% to 74.5% for g-CA-EN-NMO, 11.8% to 76.5% for g-CA-DETA-NMO, 26.7% to 95% for g-CA-TETA-NMO and 29.4 to 95.1 for g-CA-TEPA-NMO, as the adsorbent dose is increased from 5 -100 mg. This behavior is due to the availability of higher binding sites and greater surface area for removal of Cu(II) metal ion with increasing the sorbent dosage (17,18). The removal of Cu(II) had small increase in higher adsorbent dosage (above 100 mg).…”

Section: Effect Of Contact Timementioning

confidence: 98%

“…The continuous intake of copper by human beings leads to necrotic changes in the liver and kidney, mucosal irritation; wide-spread capillary damage, depression, weakness, lethargy, anorexia, gastrointestinal irritation and lung cancer [14] [15] [16]. Various methods are used for extraction of heavy metals from aqueous solution, such as reverse osmosis, chemical precipitation, ion exchange, coagulants and flocculation and adsorption [17] [18] [19] [20]. Most of these methods do not seem to be economically feasible because of their relatively high cost.…”

Section: Introductionmentioning

confidence: 99%

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Preparation, Characterization, and Application of Manganese Oxide Coated Zeolite as Adsorbent for Removal of Copper(II) Ions from Seawater

Shreadah¹,

Hamid²,

Yakout³

et al. 2019

JEP

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The present study is aimed to examine the adsorption characteristics of Cu(II) by using the novel cellulose acetate composite and to apply it for the removal of Cu(II) from real wastewater samples. In order to achieve this objective, ethylenediamine, diethylenetriamine, triethylenetetramine and tetraethylenepentanene were used for immobilization of grafted cellulose acetate-nanoscale manganese dioxide. Cellulose was extracted from mangrove species Avicennia marina and converted to cellulose acetate then it was formed composite with nano-manganese dioxide via precipitation of nano-manganese dioxide on it. The composite was grafted with acrylamide monomer before immobilization. The synthesized compounds were used for adsorption of Cu(II) and characterized by FT-IR, TGA and SEM. The adsorption characteristics of synthesized sorbents were optimized. Langmuir and Freundlich models were used to establish sorption equilibria. The analytical applications of these modified materials were applied successfully for the removal of Cu(II).

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Contact Timementioning

confidence: 97%

Section: Effect Of Contact Timementioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation, Characterization, and Application of Manganese Oxide Coated Zeolite as Adsorbent for Removal of Copper(II) Ions from Seawater

Shreadah¹,

Hamid²,

Yakout³

et al. 2019

JEP

Self Cite

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“…Graphene oxide (GO) nanosheet is a low‐dimensional carbon nanomaterial that is widely used in the modification of traditional membranes because of its large surface area, excellent mechanical strength, flexibility and other characteristics . The surface of GO nanosheet contains a large number of functional groups and previous reports have confirmed that GO nanosheet can adsorb heavy metal ions, dyes and other ions, or low molecular substances . Carboxylated GO (cGO) is the activation product of GO nanosheet, and it has more carboxylic acid (COOH) moieties that are derived from the activation of the epoxide and ester groups in GO nanosheet.…”

Section: Introductionmentioning

confidence: 99%

Preparation of carboxylated graphene oxide nanosheets/polysulphone hollow fibre separation membranes with improved separation and dye adsorption properties

Shi

Zeng

et al. 2019

Coloration Technology

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Novel hollow fibre polysulphone (PSF) separation membranes were prepared via the incorporation of carboxylated graphene oxide (cGO) in membrane matrix during the dry‐wet spinning process to improve the membrane performance of water flux and dye adsorption. The surface composition and morphology of the prepared cGO‐incorporated hollow fibre membranes were characterised by means of Fourier Transform–infrared spectra and scanning electron microscopy. The effects of different cGO contents on membrane surface hydrophilicity, separation performance, anti‐compaction and adsorption properties were investigated through measurements of the water contact angle, cross‐flow filtration and methylene blue (MB) adsorption experiments. The results demonstrated that the cGO‐incorporated membranes had more hydrophilic surfaces, higher permeation flux, better anti‐compaction properties and a higher adsorption rate of MB than that of the PSF control membrane. When cGO content was 0.45 wt.%, the pure water flux of the modified membrane increased from 90.56 to 148.26 l m−2 h−1 at 0.1 MPa; also, rejections of bovine serum albumin and polyethylene glycol (PEG‐20000) maintained relatively high values of 98.81 and 93.89%, respectively. The incorporation of cGO nanosheets could effectively improve membrane anti‐compaction properties and the adsorption rate of MB.

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Green synthesis of Dextrin‐graft‐poly(allyl amine‐co‐methacrylic acid)/reduced graphene oxide composite and its application for dye and pesticide removal from the aqueous medium

Ray,

Sasmal,

Jana

et al. 2024

ChemistrySelect

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A Dextrin‐graft‐poly(allyl amine‐co‐methacrylic acid)/reduced graphene oxide (DEXTGP/RGO) is synthesized through the grafting of a combination of allyl amine (AAM) and methacrylic acid (MAA) monomers onto the dextrin polysaccharide backbone by using the free radical copolymerization technique in an aqueous medium, with potassium peroxydisulfate serving as the initiator followed by the partial reduction of graphene oxide (GO). Various characterization techniques including FTIR, 1H/13C NMR, XRD, FESEM, EDAX, and BET analysis are utilized to characterize both the synthesized DEXTGP/RGO composite and graft copolymer. Investigations are conducted on multiple operational variables, including adsorption kinetics, isotherms, and thermodynamic parameters, for the adsorption of both MB and PL. Both intra‐particle diffusion kinetic model and pseudo‐second‐order kinetics are observed to follow for the adsorption of MB, while the Langmuir isotherm model provided a good fit for the equilibrium data. In contrast, the adsorption of PL displayed solely pseudo‐second‐order kinetics, while the equilibrium data shows good agreement with both the Langmuir and Dubinin‐Radushkevich isotherm models. Maximum adsorption capacity ( ) of the RGO composite is found to be 932.56 mg/g for MB and 311.63 mg/g for PL. The thermodynamic analysis revealed that the adsorption of dye and pesticide onto the RGO composite is a spontaneous process.

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Cross-linked graphene oxide sheets via modified extracted cellulose with high metal adsorption

Cited by 54 publications

References 34 publications

Preparation, Characterization, and Application of Manganese Oxide Coated Zeolite as Adsorbent for Removal of Copper(II) Ions from Seawater

Preparation, Characterization, and Application of Manganese Oxide Coated Zeolite as Adsorbent for Removal of Copper(II) Ions from Seawater

Preparation of carboxylated graphene oxide nanosheets/polysulphone hollow fibre separation membranes with improved separation and dye adsorption properties

Green synthesis of Dextrin‐graft‐poly(allyl amine‐co‐methacrylic acid)/reduced graphene oxide composite and its application for dye and pesticide removal from the aqueous medium

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