Utilisation of cobalt doped Iron based MOF for enhanced removal and recovery of methylene blue dye from waste water

Soni, Sanju; Bajpai, P. K.; Mittal, Jyoti; Arora, Charu

doi:10.1016/j.molliq.2020.113642

Cited by 188 publications

(44 citation statements)

References 43 publications

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“…In addition, the dyes in the wastewater can lead to the deterioration of water quality 14 , so the wastewater containing dyes must be treated innocuously and the dye components need to be removed in order to discharge to the natural water environment or carry out secondary use 4 , 15 . There are many treatment methods for dye wastewater, such as flocculation sedimentation method, membrane separation method, oxidative degradation method, etc 16 , 17 . There are many their own advantages, but a large amount of cost and complicated operation are often required, so it is difficult to popularize and apply on a large scale 18 , 19 .…”

Section: Introductionmentioning

confidence: 99%

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

et al. 2021

Sci Rep

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Methyl orange (MO) is a common anionic azo dye that is harmful to the environment and biology, so it must be treated innocuously before it can be discharged. Adsorption is an effective method to remove anionic dyes. Nanotube mineral is a natural one-dimensional adsorption material, and its unique morphology and structure endow it with good adsorption capacity. Although there are many related studies, there is a lack of in-depth discussions on the influence of nanotube’s composition and structure on the adsorption of dyes and other pollutants. In this paper, two kinds of natural one-dimensional silicate minerals [halloysite nanotubes (HNTs) and chrysotile nanotubes (ChNTs)] with similar morphology but slightly different compositions and crystal structures were used as adsorbents, and MO solution was used as simulate pollutants. It is the first time to discuss in depth the influence of the composition and structure of nanotube minerals on their charge properties and the adsorption performance of methyl orange dyes. It is found that HNTs and ChNTs have different adsorption capacity due to the difference of electronegativity between Al3+ and Mg2+ in the crystal, so they possess negative and positive charges respectively in near-neutral solution, which leads to the adsorption capacity of MO by ChNTs with positive charges which is greater than that of HNTs.

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Section: Introductionmentioning

confidence: 99%

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

et al. 2021

Sci Rep

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“…It has very low initial cost, easy operation, simplicity, minimum sludge generation, and the possibility of recovery of sorbent and the regeneration of the bio-sorbent for reuse. [15] Several adsorbents have been investigated for their potential to remove MB dye such as metal-organic framework-based materials, [16,17] Ag-doped MnO 2 -CNT nanocomposite, [18] poly(methyl methacrylate)-grafted alginate/Fe 3 O 4 nanocomposite, [19] and iron oxide impregnated with dextrin (Dex-Fe 3 O 4 ) nanocomposite. [20] In addition, low-cost and eco-friendly materials such as guar gum/activated carbon nanocomposite, [21] L-cysteine-modified montmorillonite (MMT)-immobilized sodium alginate biopolymer-based nanocomposite, [22] chitosan-grafted polyaniline-OMMT nanocomposite, [23] coconut husk, [24] eggshell, [25] hen feathers [26][27][28] wood, chitin, industrial, agricultural, and domestic wastes, [29][30][31][32] and others have been extensively studied for the removal of synthetic dyes.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of methylene blue onto sugarcane bagasse‐based adsorbent materials

Al‐Mokhalelati

Al‐Bakri

Wattar

2021

J of Physical Organic Chem

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Sugarcane bagasse (SB) before and after alkaline treatment has been investigated for the removal of methylene blue (MB) from aqueous solutions. The results showed that the adsorption was chemical in nature and the OH, C=O, and C-O groups were particularly responsible for MB dye adsorption. The optimum concentration of MB solution was fixed at 0.1 gr/50 mL in both treated and untreated SB. Batch adsorption studies are used to derive the optimum adsorption conditions. A contact time of 90 min, a pH range from 5 to 9, a dose of 0.1 g, and an initial concentration of the MB of 100 ppm were chosen. The amount of adsorbed MB dye on the surface of the SB was temperature dependent, and the adsorption increases with increasing temperature. The values of ΔH , ΔG , and ΔS indicated endothermic but spontaneous process. The overall results indicated that SB was a promising candidate for dye removals.

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“…The design included 29 experimental runs in total, 4 center points, and 1 block. The changes among independent variables were compared with respect to responses using ANOVA (17). Levels and ranges of the independent variables in the experiments are summarized in Table 3.…”

Section: Y= β°+mentioning

confidence: 99%

‎Application of Box-Behnken Design and Response Surface Methodology of Acid Red 18 Adsorption onto PAC‎ (Synthesized Carrot Waste) Coated with Fe3O4 Nanoparticles from Aquatic Solution: Kinetic and Isotherm Studies

et al. 2021

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Background & Aims of the Study:The dyes present in the effluent from the textile industry are among the most polluted and hazardous wastewater discharged, causing severe changes in water quality and the environment. The use of agricultural residues as inexpensive organic adsorbents is very suitable for removing industrial dyes from aquatic solutions, especially in developing countries. This study aimed to investigate the effectiveness of activated carbon synthesized from carrot waste as an inexpensive and available organic adsorbent in the removal of Acid Red 18 (AR18) dye. Materials and Methods: In this study, response surface methodology (RSM) was discussed as an efficient method for the optimization of AR18 adsorption onto PAC (obtained from waste carrot) coated with Fe3O4 nanoparticles. ANOVA analysis based on the Box-Behnken design-RSM was applied to investigate the correlation coefficient of PAC (Synthesized Carrot Waste). Adsorbent dose, initial dye concentration, and pH were optimized and evaluated using RSM with respect to contact time on adsorption of AR18. Moreover, X-ray diffraction, transmission electron microscopy, Brunauer-Emmett-Teller, Fourier-transform infrared, and field emission scanning electron microscopy techniques were used to study the adsorbent properties and characteristics of PAC. Isotherm data were modeled with both Langmuir and Freundlich isotherm. Results: The results obtained from Langmuir isotherm showed the best fit to experimental data proposing homogeneous dispersion of adsorption sites. Moreover, the compatibility of the adsorbent was examined by fitting the adsorption data with a pseudo-second-order kinetic model. The results of ANOVA analysis showed a good fit between quadratic model predictions with experimental values, resulting in R 2 of 0.997 for PAC. The results showed 99.7% of dye AR18 was removed after 80 min, pH at 3, and the adsorbent dose of 1.5 g. Conclusion:It can be concluded that PAC (Synthesized Carrot Waste) has great potential applications for the removal of AR18 dye from the textile industry. Large-scale applications of adsorbent and adsorbate, due to their recuperation and reusability characteristics, are proposed by observations and experimental results of this study.

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Utilisation of cobalt doped Iron based MOF for enhanced removal and recovery of methylene blue dye from waste water

Cited by 188 publications

References 43 publications

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

Study on the adsorption properties of methyl orange by natural one-dimensional nano-mineral materials with different structures

Adsorption of methylene blue onto sugarcane bagasse‐based adsorbent materials

‎Application of Box-Behnken Design and Response Surface Methodology of Acid Red 18 Adsorption onto PAC‎ (Synthesized Carrot Waste) Coated with Fe3O4 Nanoparticles from Aquatic Solution: Kinetic and Isotherm Studies

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