Development of sonophotocatalytic process for degradation of acid orange 7 dye by using titanium dioxide nanoparticles/graphene oxide nanocomposite as a catalyst

Al-Musawi, Tariq J.; Periakaruppan, Rajiv; Mengelīzadeh, Nezamaddin; Mohammed, I.A.; Balarak, Davoud

doi:10.1016/j.jenvman.2021.112777

Cited by 83 publications

(40 citation statements)

References 67 publications

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“…Dyes are one of the main pollutants released from the textile industry, their degradation products are carcinogenic and can pose serious health problems to humans including dysfunction of kidney, eye irritation, and allergic disease. Moreover, dyes cause aesthetic pollution of the environment 5 – 7 . Because of their high solubility and visibility in water bodies, they minimize the amount of sunlight penetrating the water, resulting in a decrease in the photosynthesis process and a deficiency in the concentration of dissolved oxygen 8 , 9 .…”

Section: Introductionmentioning

confidence: 99%

Biodegradable cellulose nanocrystals hydrogels for removal of acid red 8 dye from aqueous solutions

Abdelaziz

El‐Maghraby

Sadik

et al. 2022

Sci Rep

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Biodegradable cellulose nanocrystals hydrogels (CNCsH) were synthesized from cellulose nanocrystals (CNCs) which were prepared from office wastepaper (OWP) by a chemical crosslinking method using epicholorohydrin (ECH) as a cross-linker. CNCsH were tested for their swelling behavior and biodegradability and the point of zero charge had been determined. The ability of CNCsH for removing the Acid Red 8 (AR8) anionic dye from its aqueous solution was evaluated. The different parameters affecting removal of the dye, such as pH, initial concentration of dye, content of CNCs, temperature and adsorbent dosage were investigated. The optimum conditions for 68% removal efficiency were pH = 1, initial concentration of dye = 10 ppm, contact time = 105 min, CNCs content = 5% and CNCsH dosage = 0.5 g at 30 °C. The adsorption isotherms, kinetics, and thermodynamic parameters have been studied. The results showed an appropriate fit for Langmuir adsorption isotherm and pseudo-second order kinetics model with an adsorption capacity of 17.12 mg/g. According to the obtained values of thermodynamic parameters, the removal of Acid red 8 by CNCs hydrogels was exothermic spontaneous process.

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Section: Introductionmentioning

confidence: 99%

Biodegradable cellulose nanocrystals hydrogels for removal of acid red 8 dye from aqueous solutions

Abdelaziz

El‐Maghraby

Sadik

et al. 2022

Sci Rep

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“…The exploitation of the series of ultraviolet spectra allows to calculate the percentage of degradation of the AO7 dye versus time of irradiation using the formula [53]:…”

Section: Evaluation Of Photocatalytic Capabilities Of the Biosourced ...mentioning

confidence: 99%

An Ecoconceptual Synthesis Process of Silver Nanoparticles Integrating the Valorization of a Food Waste: The Peanut Shell

Massard¹,

Awitor²

2022

JBNB

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A green synthesis process of silver nanoparticles in an eco-conceptual approach to sustainable development is reported. This eco-friendly process is based on the valorization of a food waste, the peanut shell carrying natural chemical compounds able to reduce silver ions. The physicochemical characterizations performed to allow for validation of the success of this green chemistry approach: ultraviolet-visible and infrared spectroscopies validate the formation of silver nanoparticles. X-ray diffraction ensures the good crystallinity of these biogenic nanoparticles, while transmission electron microscopy allows highlighting of the morphology of these biosourced colloids. The results of the study of photocatalytic degradation of a model molecule by these biosynthesized nanoparticles demonstrate that they can be part of a completely sustainable process of depollution from its starting point, i.e., the design of the nanoparticle, to the application of pollution remediation.

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“…Approximately, 10 000 different types of these dyes are used in more than one industrial product, which in turn resulted in a continuous discharge of these pollutants into effluent wastewater coming out from these industries. 1 According to an estimate, about 40–65 L of wastewater is generated to produce 1 kg fabric. Thus, a considerable amount of wastewater including dye is directly discharged into streams and rivers through aqueous effluent.…”

Section: Introductionmentioning

confidence: 99%

Novel Wastewater Treatment by Using Newly Prepared Green Seaweed–Zeolite Nanocomposite

et al. 2022

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A dependent step-by-step study that included experimental and field study was applied to explore the simplest and most effective system that could be applied for adsorption of Congo Red (CR) dye from the effluent of wastewater that comes out from different industries. Zeolite (Z) surface and pores were subjected to a modification process using green seaweed (GS) algae. Thereafter, each Z, GS, and composite from both were evaluated based on the adsorption efficacy to clean up CR dyes from aqueous solutions. A wet impregnation method was followed to fabricate the zeolite/algae (ZGS) nanocomposite which was characterized using the most appropriate characterization techniques. Batch experiments were selected to be the method of choice in order to follow up the performance of the adsorption process versus different practical variables. Moreover, dye adsorption kinetics and isotherms were investigated as well. At lowered concentrations of CR, the novel nanocomposite ZGS revealed more efficacy than its counterparts, Z and GS, in terms of the adsorption capacity. The maximum adsorption capacities were found to be 8.10, 10.30, and 19.70 mg/g for Z, GS, and ZGS, respectively. Laboratory tests confirmed that the novel nanocomposite ZGS could be introduced as a new and economical nanoadsorbent to capture and remove negatively charged dyes from wastewater effluents that come out from industries at lower concentrations of CR dye and analogous compounds. The dye adsorption on GS, Z, and ZGS coincide with the pseudo-first, Langmuir isotherm, and second-order models. Evaluation for the sorption mechanism was conducted using a diffusion model known as Weber’s intraparticle. Depending on the last findings, field experiments on removing dyes from industrial wastewater revealed optimistic findings as the efficiency of our modern and eco-friendly nanoadsorbent reached 91.11%, which helps in the reuse of industrial wastewater.

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Development of sonophotocatalytic process for degradation of acid orange 7 dye by using titanium dioxide nanoparticles/graphene oxide nanocomposite as a catalyst

Cited by 83 publications

References 67 publications

Biodegradable cellulose nanocrystals hydrogels for removal of acid red 8 dye from aqueous solutions

Biodegradable cellulose nanocrystals hydrogels for removal of acid red 8 dye from aqueous solutions

An Ecoconceptual Synthesis Process of Silver Nanoparticles Integrating the Valorization of a Food Waste: The Peanut Shell

Novel Wastewater Treatment by Using Newly Prepared Green Seaweed–Zeolite Nanocomposite

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