Enhancement of photocatalytic and biological activities of chitosan/activated carbon incorporated with TiO2 nanoparticles

Owda, Medhat E.; Elfeky, Ahmed S.; Abou-Zeid, Ragab E.; Saleh, Ahmed K.; Awad, Mohamed A.; Abdel-Latif, H. A.; Ahmed, Fakher M.; Elzaref, Ahmed S.

doi:10.1007/s11356-021-17019-y

Cited by 14 publications

(6 citation statements)

References 54 publications

(17 reference statements)

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“…We tested the properties of the PSSA and PSSA/SiO2 by repeating the adsorption and desorption cycles four times. The results are displayed in Figure (8). As a result of the fourth cycle, the adsorption capacity of PSSA and PSSA/SiO2 was reduced slightly from 98 to 93.…”

Section: Desorption Studymentioning

confidence: 95%

“…Adsorption is one of the recent technologies and most effective methods at low concentrations for removing organic contaminants from wastewater. In addition to their beneficial properties, such as high uptake capacity and fast kinetics, adsorption has proven to be a promising technology [5][6][7][8]. At low concentrations, adsorption is one of the most effective methods for removing contaminants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, the main methods applied in plastic waste treatment are landfill, incineration, mechanical recycling, and chemical recycling. Chemical recycling might be the best treatment for polystyrene waste since it has less environmental impact, and is able to recover the useful materials that polystyrene waste contained [8,22]. In this study, we try to combine two important goals.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption of cationic methylene blue dye on polystyrene sulfonic acid composites from waste: Kinetics and equilibrium.

Abou-Zeid

Dardeer²,

Mahgoub

et al. 2021

Egypt. J. Chem.

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In this study a unique polystyrene sulfonic acid (PSSA) has been synthesized by chemical recycling of waste expanded polystyrene used for fridge packing. Polystyrene sulfonic acid has been used for the preparation of polystyrene composites with silicon dioxide in three percentages 5%, 10%, and 20%. FT-IR, 1 H-NMR, and 13 C-NMR spectroscopic analysis of the obtained materials confirmed their structure. Scanning electron microscopy (SEM) was used to examine the surface morphology of the prepared materials. The crystallinity of the polymer composite was observed through XRD (X-ray diffraction) techniques, and its thermal stability with thermogravimetry (TG) processes was studied. Furthermore, polystyrene sulfonic acid and its composites with silicon dioxide were used as solid adsorbents for decontaminating organic dye-contaminated water. PSSA/Silicon dioxide composites could regenerate the methylene blue MB for a maximum of four cycles without losing their adsorption efficiency.

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Section: Desorption Studymentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adsorption of cationic methylene blue dye on polystyrene sulfonic acid composites from waste: Kinetics and equilibrium.

Abou-Zeid

Dardeer²,

Mahgoub

et al. 2021

Egypt. J. Chem.

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“…Generally, the affinity of native cellulose microfibers towards organic pollutants is 100 to 500 times lower than that of conventional nanomaterials, such as zeolite or activated carbon, due to the low number of active sites for interaction with the organic pollutants [107]. Alternatively, surface-modified nanocelluloses have been tested as support materials for the adsorption of various organic pollutants [39,[107][108][109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124]. This is mainly explained by their robust mechanical properties, the high specific surface area that allows creating active interaction sites after functionalization, and the small pore size of their filters/membranes.…”

Section: Adsorbents For Hazardous Organic Pollutants Removalmentioning

confidence: 99%

Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration

et al. 2021

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Nanocelluloses are promising bio-nano-materials for use as water treatment materials in environmental protection and remediation. Over the past decades, they have been integrated via novel nanoengineering approaches for water treatment processes. This review aims at giving an overview of nanocellulose requirements concerning emerging nanotechnologies of waster treatments and purification, i.e., adsorption, absorption, flocculation, photocatalytic degradation, disinfection, antifouling, ultrafiltration, nanofiltration, and reverse osmosis. Firstly, the nanocellulose synthesis methods (mechanical, physical, chemical, and biological), unique properties (sizes, geometries, and surface chemistry) were presented and their use for capturing and removal of wastewater pollutants was explained. Secondly, different chemical modification approaches surface functionalization (with functional groups, polymers, and nanoparticles) for enhancing the surface chemistry of the nanocellulose for enabling the effective removal of specific pollutants (suspended particles, microorganisms, hazardous metals ions, organic dyes, drugs, pesticides fertilizers, and oils) were highlighted. Thirdly, new fabrication approaches (solution casting, thermal treatment, electrospinning, 3D printing) that integrated nanocelluloses (spherical nanoparticles, nanowhiskers, nanofibers) to produce water treatment materials (individual composite nanoparticles, hydrogels, aerogels, sponges, membranes, and nanopapers) were covered. Finally, the major challenges and future perspectives concerning the applications of nanocellulose based materials in water treatment and purification were highlighted.

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“…Activated carbon is one of the most often used adsorbents for water treatment because of its clear porous nature, efficacy, availability, higher capacity for adsorption, a high surface area, a variety of porosity, and surface characteristics with a high degree of reactivity are also present [16,17]. The agricultural wastes are a good choice for making AC [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

ElKholy

Yahia²,

El-Nawawy

et al. 2022

Preprint

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The present study reports the feasibility of the synthesis of a novel porous activated carbon (OS400) composite adsorbent prepared from olive stone and impregnated with garnet (GA) types of black sand minerals. The Activated Carbon/ garnet composite (OSMG) was applied for the sorption of macromolecular organic dye. The structural characteristics of the synthesized composite were evaluated by Brunauer–Emmett–Teller (BET), N2 adsorption/desorption measurements, Scanning Electron Microscopy equipped with Energy Dispersive X-ray spectroscopy (SEM-EDX), X-ray diffraction (XRD), and a Fourier transform infrared spectrometer (FT-IR). The specific surface area of (GA), (OS400), and (OSMG) were 5.157 m2.g− 1, 1489.598 m2.g− 1, and 546.392 m2.g− 1, respectively. The high specific surface area and effective active centers of the new composite promoted the adsorption of methylene blue (MB). The experiments were carried out under various conditions such as contact time, initial concentration of adsorbate, adsorbent dosage, pH, and temperatures. The equilibrium adsorption data were evaluated using the Langmuir and Freundlich isotherm models. The results display that, the adsorption isotherm had an excellent fitting to the Freundlich model. Furthermore, the data obtained from adsorption kinetic models showed that the pseudo-second-order model more agreeing for describing the (MB) adsorption reaction, suggesting a chemisorption mechanism. The values of thermodynamic parameters indicate that methylene blue dye adsorption onto the (GA) adsorbents through an endothermic reaction, while exothermic sorption of MB onto (OS400) and (OSMG), with a non-spontaneous process.

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Enhancement of photocatalytic and biological activities of chitosan/activated carbon incorporated with TiO2 nanoparticles

Cited by 14 publications

References 54 publications

Adsorption of cationic methylene blue dye on polystyrene sulfonic acid composites from waste: Kinetics and equilibrium.

Adsorption of cationic methylene blue dye on polystyrene sulfonic acid composites from waste: Kinetics and equilibrium.

Nanocellulose-Based Materials for Water Treatment: Adsorption, Photocatalytic Degradation, Disinfection, Antifouling, and Nanofiltration

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

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