Methyl orange adsorption comparison on nanoparticles: Isotherm, kinetics, and thermodynamic studies

Darwish, A.A.A.; Rashad, M.; Al‐Aoh, Hatem A.

doi:10.1016/j.dyepig.2018.08.045

Cited by 203 publications

(67 citation statements)

References 54 publications

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“…Therefore, the Langmuir isotherm model is the best model for anionic dyes adsorption on 4PNAL and 6PNAL. Comparison of adsorption capacities of PNAL adsorbents for AB‐113 and MO with the previous reported adsorbents are presented in Table S3 . − …”

Section: Resultsmentioning

confidence: 99%

“…Among these methods, adsorption is the most effective technique for removing effluents from wastewater. This technique is preferred over others by the reason of low cost, ease operation, practicality and smaller amounts of secondary waste . Several well‐known adsorbent materials are utilized for the removal of organic effluents from wastewater such as fly ash, activated carbon, chitosan, agro‐industrial waste, coal, bentonite, bio adsorbents and mixed metal oxides of layered double hydroxides (LDH) .…”

Section: Introductionmentioning

confidence: 99%

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Removal of Anionic Dyes from Water using Polyethylene Glycol Modified Ni‐Al‐layered Double Hydroxide Nanocomposites

2020

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The existence of several harmful organic dyes in wastewater let off from many industries is one of the major global environmental concerns. Owing to these apprehensions, this study aims to enhance the removal of organic dyes from wastewater using NiÀ Al-layered double hydroxides (NiÀ Al-LDH) modified with varying molecular weights of polyethylene glycol (PEG). The PEGÀ Ni-Al-LDH (PNAL) nanocomposites were synthesized by co-precipitation method and characterized using powder XRD, FESEM, EDAX and TGA. The adsorption performance of PNAL composites towards acid blue-113 (AB-113) and methyl orange (MO) dyes in aqueous media were investigated. The adsorption results revealed that 6PNAL can remove 94.11% of AB-113 and 98.29% of MO dyes in 20 min. The adsorption processes are spontaneous and endothermic in nature, and followed the pseudo-second-order model. The adsorption isotherms were best described by the Langmuir isotherm model. The reusability studies of 6PNAL nanocomposite for removal of MO and AB-113 dyes from aqueous solution can be significantly implicated for removal of aforementioned dyes from wastewater.[a] S. Natarajan, R. Naresh, Dr. V. Thiagarajan

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of Anionic Dyes from Water using Polyethylene Glycol Modified Ni‐Al‐layered Double Hydroxide Nanocomposites

2020

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“…41,42 High temperature causes more negative in the ∆ G 0 values indicates that the most favorable condition for higher adsorption efficiency is temperature. 43 It is generally considered that the physical sorption get dominate at the ∆ H 0 value less than 25 kJ/mol, whereas the chemical sorption become dominate when the ∆H 0 values greater than 40 kJ/mol. 44 Accordingly, the MB adsorption onto PIBCP30 is a chemical adsorption and endothermic reaction due to it giving a ∆ H 0 value of 61.29 kJ/mol.…”

Section: Modelmentioning

confidence: 99%

Microalgal-Immobilized Biocomposite Scaffold Fabricated by Fused Deposition Modeling 3D Printing Technology for Dyes Removal

Xia¹,

Xu²,

Lin³

et al. 2020

ES Mater.Manuf.

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Here, The biosorption process for the removal of methylene blue (MB) was developed using three-dimensional printed biocomposite scaffolds obtained from Polylactide / Poly(butylene adipate-coterephthalate) (PLA/PBAT)-immobilized biomass of Chlorella pyrenoidosa (PIBCP). The adsorption capacity of the 3D printed PIBCP was carried out. And the effects of adsorbent dose, initial dye concentration, solution pH, ionic strength, temperature, and contact time on the adsorption performances were discussed. The results show that the decolorization rate for methylene blue on the 3D printed PIBCP30 (with 30% mass of Chlorella pyrenoidosa) is 92.66% at the adsorption time of 24 h. The material also shows a good recyclability to have 72% of removal efficiency after six cycles. Kinetic and adsorption isotherm models indicate that the adsorption of methylene blue onto the 3D printed PIBCP30 occurs mainly through chemisorption. Langmuir maximum adsorption capability of methylene blue on the 3D printed PIBCP30 is calculated to be of 35.21 mg/g (100 mg/ g, 298.15 K) . The adsorption is determined to be endothermic and spontaneous. The results indicate that Polylactide/Poly (butylene adipate-coterephthalate) (PLA/PBAT)-immobilized biomass of Chlorella pyrenoidosa (PIBCP) is a promising material for dye removal and the 3D printing technique can be employed to fabricate adsorbent for large-scale wastewater treatment.

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“…The concentration of MER after the tests was measured by HPLC. The resulting adsorption isotherm was adjusted to the linear form of Langmuir and Freundlich models which are presented in Equations (3) and (4), respectively [42].…”

Section: Photocatalytic Degradation Of Meropenemmentioning

confidence: 99%

Degradation of Meropenem by Heterogeneous Photocatalysis Using TiO2/Fiberglass Substrates

et al. 2020

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Meropenem (MER), a carbapenem, is considered a last-resort antibiotic. Its presence in water bodies, together with other antibiotics, has brought about environmental problems related to the destruction of natural microorganisms and the development of antibiotic-resistant bacteria. Herein, the degradation of MER by heterogeneous photocatalysis using TiO2 immobilized on fiberglass substrates is reported. Morphological characterization of the substrates was performed by Scanning Electron Microscopy (SEM). Three pH values (4.0, 5.7, and 7.9) were tested for the treatment of MER solutions (100 mg/L). The best rate constants and MER removals were obtained at pH 4.0 (0.032 min−1; 83.79%) and 5.7 (0.032 min−1; 83.48%). Chemical Oxygen Demand (COD) and Total Organic Carbon (TOC) removals of 25.80% and 29.60% were achieved for the treatment at a pH value of 5.7. The reuse and regeneration of the plates were also tested. The activity of the substrates was maintained until the fourth cycle of reuse, nonetheless, a decrease in MER removal was observed for the 5th cycle. After the fourth cycle of reuse, the activity of the substrates was recovered by a regeneration procedure involving a wash stage of the substrates with a 1% H2O2 solution in an ultrasonic bath.

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Methyl orange adsorption comparison on nanoparticles: Isotherm, kinetics, and thermodynamic studies

Cited by 203 publications

References 54 publications

Removal of Anionic Dyes from Water using Polyethylene Glycol Modified Ni‐Al‐layered Double Hydroxide Nanocomposites

Removal of Anionic Dyes from Water using Polyethylene Glycol Modified Ni‐Al‐layered Double Hydroxide Nanocomposites

Microalgal-Immobilized Biocomposite Scaffold Fabricated by Fused Deposition Modeling 3D Printing Technology for Dyes Removal

Degradation of Meropenem by Heterogeneous Photocatalysis Using TiO2/Fiberglass Substrates

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