Synthesis of the ZnO-Ni0.5Zn0.5Fe2O4-Fe2O3 magnetic catalyst in pilot-scale by combustion reaction and its application on the biodiesel production process from oil residual

Silva, A.L. da; Farias, Ana Flávia Félix; Pontes, Julyanne R. M.; Rodrigues, Alisson Mendes; Costa, Ana Cristina Figueiredo de Melo

doi:10.1016/j.arabjc.2020.09.003

Cited by 24 publications

(33 citation statements)

References 62 publications

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“…The samples were obtained from a combination of three granulometry: #40 ( 0.18 mm < particles size ≤ 0.42 mm), #80 (0.074 mm < particles size ≤ 0.18 mm), #200 (particles size ≤ 0.074 mm). Initially, the amount of water needed to obtain a consistency index of 260 ± 5 mm [32] was determined using the centroid simplex-type mixture design methodology, augmented with internal points [33]. Two replicates were performed for each point (three measurements).…”

Section: Formulation Of the Granulometric Compositionsmentioning

confidence: 99%

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

et al. 2021

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Alkali-activated materials (AAMs) were produced using residues from the red ceramic industry as a precursor, and sodium hydroxide (NaOH), potassium hydroxide (KOH), and sodium silicate (Na2SiO3) as alkaline activators. The effect of activators and curing conditions on physical-mechanical properties and durability were evaluated. The processing parameters (amount of water and consistency index) and the activation conditions (the activator contents and curing temperature) were defined based on an experimental design getting the flexural rupture module as the response. The durability behavior was evaluated by natural aging, accelerated aging (simulated rain test), exposure to the marine environment (salt fog), and acidic environments (HCl and H2SO4). The results showed that the NaOH- and KOH-activated samples exhibited inferior mechanical behavior than those activated with Na2SiO3. In the durability studies, due to leaching, there was a decrease in mechanical strength when samples are subjected to aggressive exposure conditions. However, the strength values are still higher than the minimum indicated for traditional ceramic applications.

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Section: Formulation Of the Granulometric Compositionsmentioning

confidence: 99%

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

et al. 2021

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“…The oil was filtered using white strip filter paper. The physicochemical parameters of the residual oil were accomplished in agreement with the AOCS Cd 3d-63 standard, and the result showed a value of 14.8 ± 0.005 mg of KOH/g of the sample, methyl alcohol (CH 3 OH)-purity 99.8% (Dinâmica), and ethyl alcohol (CH 3 CH 2 OH)-purity 99.5% (Dinâmica) [30].…”

Section: Methodsmentioning

confidence: 70%

“…In this research, the Ni 0.5 Zn 0.5 Fe 2 O 4 magnetic catalyst was synthesized via a combustion reaction from the following chemical reagents: nickel nitrate hexahydrate (Ni(NO 3 ) 2 6H 2 O), hexahydrate zinc nitrate (Zn(NO 3 ) 2 •6H 2 O), iron (III) nitrate nonahydrate (Fe(NO 3 ) 3 •9H 2 O), and urea. All chemical reagents used were purchased from the Dinâmica (Brazil), with purities between 98% and 99% [30]. The catalyst's performance was evaluated on its ability to convert frying oil residual into FAAE via simultaneous transesterification and esterification reactions (TES reactions).…”

Section: Methodsmentioning

confidence: 99%

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From Disposal to Reuse: Production of Sustainable Fatty Acid Alkyl Esters Derived from Residual Oil Using a Biphasic Magnetic Catalyst

et al. 2020

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The development of technologies to promote residual oil reuse has been encouraged, aiming to reduce the environmental impact and promote sustainability. In this study, a biphasic magnetic catalyst with composition equal to ZnO-Ni0.5Zn0.5Fe2O4 was synthesized and applied to the fatty acid alkyl ester (FAAE) production from residual oil. The ZnO-Ni0.5Zn0.5Fe2O4 catalyst was synthesized by combustion reaction and characterized by X-ray diffraction (XRD), textural analysis, Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, thermogravimetry, particle size distribution, scanning electron microscopy, magnetic measurements, quantification of acidic sites by TPD-NH3, and catalytic tests. The efficiency of catalyst synthesis was evaluated by XRD, FTIR, and Raman spectroscopy experiments. Granulometric analysis and SEM images confirmed the presence of the agglomerates and particles with a wide size range. The catalyst presented soft magnetic behavior, with high saturation magnetization. Additionally, the catalytic activity of the ZnO-Ni0.5Zn0.5Fe2O4 system showed an average conversion of 73% for the methyl route. The results indicate that the reuse of residual oil is feasible for FAAE production, contributing to sustainable fuel development. Moreover, it allows the reintroduction of waste oil into the biodiesel production chain, reducing cost after process optimization.

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“…The average pore diameter and surface area were determined by nitrogen adsorption measurements at 77 K using an Auto-sorb iQ Station 1 analyzer (Anton Paar, Graz, Austria). The Brunner-Emmett-Teller (BET) method [65,66] was used to calculate the surface area. All nitrogen sorption data were analyzed using the Quantachrome ® ASiQwin™ software (Anton Paar, Graz, Austria).…”

Section: Characterizationsmentioning

confidence: 99%

Adsorption Behavior of Crystal Violet and Congo Red Dyes on Heat-Treated Brazilian Palygorskite: Kinetic, Isothermal and Thermodynamic Studies

et al. 2021

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The effect of heat treatment on the adsorptive capacity of a Brazilian palygorskite to remove the dyes crystal violet (CV) and congo red (CR) was investigated. The natural palygorskite was calcined at different temperatures (300, 500 and 700 °C) for 4 h. Changes in the palygorskite structure were evaluated using X-ray diffraction, X-ray fluorescence, thermogravimetric and differential thermal analysis, N2 adsorption/desorption and Fourier transform infrared spectroscopy. The adsorption efficiency of CV and CR was investigated through the effect of initial concentration, contact time, temperature, pH and dosage of adsorbent. The calcination increased the adsorption capacity of palygorskite, and the greatest adsorption capacity of CV and CR dyes occurred in the sample calcined at 700 °C (Pal-700T). The natural and calcined samples at 300 and 500 °C followed the Freundlich isothermal model, while the Pal-700T followed the Langmuir isothermal model. Adsorption kinetics results were well described by the Elovich model. Pal-700T showed better adsorption performance at basic pH, with removal greater than 98%, for both dyes. Pal-700T proved to be a great candidate for removing cationic and anionic dyes present in water.

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Synthesis of the ZnO-Ni0.5Zn0.5Fe2O4-Fe2O3 magnetic catalyst in pilot-scale by combustion reaction and its application on the biodiesel production process from oil residual

Cited by 24 publications

References 62 publications

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

Durability of Sustainable Ceramics Produced by Alkaline Activation of Clay Brick Residue

From Disposal to Reuse: Production of Sustainable Fatty Acid Alkyl Esters Derived from Residual Oil Using a Biphasic Magnetic Catalyst

Adsorption Behavior of Crystal Violet and Congo Red Dyes on Heat-Treated Brazilian Palygorskite: Kinetic, Isothermal and Thermodynamic Studies

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