Sono-assisted rapid adsorption of anionic dye onto magnetic CaFe2O4/MnFe2O4 nanocomposite from aqua matrix

Bhowmik, Mahashweta; Kanmani, M.; Debnath, Animesh; Saha, Biswajit

doi:10.1016/j.powtec.2019.06.009

Cited by 70 publications

(26 citation statements)

References 46 publications

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“…12. Figure 12 illustrates the sorption equilibrium trend of adsorbent materials with respect to initial concentration from 29,36,56 which possibly became the reason to enhance sorption capacity of modified BC. It was also reported that that iron ions or iron oxides have capability to degrade the benzene ring which is the main functional group of EBT and other aromatic organic dyes.…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…Various naturally-occurring (Fe, Mn, Mg, Al, Ni, Zn) and synthetic metal oxides and different blends with other materials were applied to improve biochar sorption abilities. 4,[25][26][27][28][29][30][31] Several bimetal oxides and metal ferrite (NiFe 2 O 4 , MnFe 2 O 4, CaFe 2 O 4 ) composites have been studied to remove anionic dyes which have shown significant removal capacities as well as magnetic separation. 29,32 Composites of bimetal oxides are usually distributed over modified biochars and supported by carbon matrix.…”

Section: Introductionmentioning

confidence: 99%

“…4,[25][26][27][28][29][30][31] Several bimetal oxides and metal ferrite (NiFe 2 O 4 , MnFe 2 O 4, CaFe 2 O 4 ) composites have been studied to remove anionic dyes which have shown significant removal capacities as well as magnetic separation. 29,32 Composites of bimetal oxides are usually distributed over modified biochars and supported by carbon matrix. In recent studies, Mn-ferrite composites were employed over graphene oxide 33 and applied by sonication 29 to improve sorption of EBT and anionic pollutants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…29,32 Composites of bimetal oxides are usually distributed over modified biochars and supported by carbon matrix. In recent studies, Mn-ferrite composites were employed over graphene oxide 33 and applied by sonication 29 to improve sorption of EBT and anionic pollutants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

Amjed

Ali

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: In the current work, the conventional pyrolysis technique was replaced by new concentrated solar power (CSP) driven technique to fabricate and modify biochar (BC) for more sustainable, energy independent, cost-effective, and ecofriendly pyrolysis processes. Double-glazed vacuum tube was used as a reactor for pyrolysis along with solar tracking system on CSP plant, meanwhile nitrogen flow was maintained during pyrolysis to create an inert environment. Further, a novel approach was used to modifying BC by loading bimetal oxide (Mn-Ferrite) on pristine biochar (P-BC) using pre-and posttreatment to enhance its sorption capacity for anionic aromatic pollutant i.e., Eriochromie Black T (EBT) dye from aqueous solution. RESULTS: Ferric chloride hexahydrate (FeCl3•6H 2 O) and Ferrous sulfate heptahydrate (FeSo 4 •7H 2 O) were used to develop magnetic nanoparticles (MNPs) γ-Fe 2 O 3 by co-precipitation technique. Both Biomass and P-BC were treated with MnCl 2 •4H 2 O and MNPs to fabricate an innovative bi-metal oxide (MnFe 2 O 4 ) biochar. The characterization of modified biochars via Elemental analyzer, SEM (scanning-electron-microscopy), BET (Brunauer-Emmet-Teller), XPS (X-ray-photoelectron-spectroscopy), FTIR (Fourier-transform-infrared-spectra), and VSM (Vibrating-sample-magnetometer), ensured the loading of magnetic bimetal oxide over P-BC. Various kinetic and isotherm models were employed from which pseudo-second-order have proven to be the best fit kinetic model on all types of BCs with highest correlation coefficient value (R 2 = 0.999). While among isotherm models, Langmuir demonstrated best regression coefficient (R 2 = 0.98) and Qmax for EBT was up to 121.95 mg•g −1 .CONCLUSIONS: Altogether, the results indicated that innovative Mn-ferrite loaded BC has better sorption ability to EBT than simple metal oxide of Mn and Fe.

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Section: Adsorption Isothermmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

Amjed

Ali

et al. 2021

J of Chemical Tech & Biotech

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“…Among several dye remediation methods, adsorption is one of the most effective techniques due to the availability of large number of adsorbents, easy operation, high efficiency, and economic feasibility. Wide variety of adsorbents like activated carbon, industrial waste, agricultural waste, zeolites, clays, and polymers have been testified for amputation of dyes from water (Deng et al 2013;Yao et al 2014;Zeng et al 2014;Montoya-suarez et al 2016;Bhowmik et al 2017;Bhowmik et al 2019). But many of them suffer from low adsorption capacity, high cost, poor regeneration ability, and slow adsorption rate etc.…”

Section: Introductionmentioning

confidence: 99%

Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling

Das

Debnath

2021

Water Practice and Technology

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Industrial wastewaters laden with toxic dyes are required to be treated prior to their disposal in view of their adverse effect on human health and aquatic ecosystem. Thus in this research, CaFe2O4 nanoparticles were prepared and used as adsorbent for elimination of reactive orange 12 dye (RO12) from aqueous medium. The CaFe2O4 nanoparticles exhibit specific surface area of ∼230 m2/g and average pore diameter of ∼2.5 nm. Maximum RO12 removal of 77% was observed at solution pH 2.0 with uptake capacity of 276.92 mg/g. The electrostatic interaction between CaFe2O4 nanoparticles and RO12 was the main driving force behind this adsorption. The kinetic modeling reveal that this adsorption process obeyed the pseudo-second-order kinetic model accurately (R2: 0.988–0.994) indicating the chemisorption behavior. The adsorption experimental data firmly followed the Langmuir isotherm model (R2: 0.997), confirming the monolayer adsorption. Thermodynamic study suggests that the adsorption process is spontaneous (ΔG0 = −8.76 to −3.19 kJ/mol) and exothermic in nature (ΔH0 = –71.86 kJ). A neural network model (optimum topology of 4–7–1) was developed for precise forecasting of RO12 removal (%). The developed model with very high correlation coefficient (0.986) and very low mean squared error (0.00185) was successful for accurate prediction of experimental data.

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Eco‐Friendly Technique for Preparation of ZnO Nanoparticles: Pd(II) Ions Adsorption

Davarnejad

Nikandam

2022

Chem Eng & Technol

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A novel eco-friendly procedure was developed to adsorb Pd 2+ ions from wastewaters using the green synthesized zinc oxide (ZnO) nanoparticles (NPs). ZnO NPs were easily produced using zinc nitrate through Centaurea cyanus extract as a reducing agent at ambient conditions. X-ray diffraction results demonstrated that ZnO NPs have a highly crystalline hexagonal structure. Fourier transform infrared spectral analysis indicated an active contribution of C. cyanus-derived biomolecules in zinc ions bioreduction. ZnO NPs were properly dispersed and had a hexagonal shape. The impact of process parameters like initial pH of solution, adsorption dosage, Pd 2+ ions initial concentration, and contact time on the Pd 2+ ions adsorption from the effluent of a petrochemical company was evaluated. The Freundlich isothermal model could excellently legitimize a multilayer adsorption. The adsorption process followed a pseudo-second-order reaction kinetic, i.e., chemisorption process.

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Sono-assisted rapid adsorption of anionic dye onto magnetic CaFe2O4/MnFe2O4 nanocomposite from aqua matrix

Cited by 70 publications

References 46 publications

Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

Surface decoration and characterization of solar driven biochar for the removal of toxic aromatic pollutant

Reactive orange 12 dye adsorption onto magnetically separable CaFe2O4 nanoparticles synthesized by simple chemical route: kinetic, isotherm and neural network modeling

Eco‐Friendly Technique for Preparation of ZnO Nanoparticles: Pd(II) Ions Adsorption

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