Corncob residue as heterogeneous acid catalyst for green synthesis of biodiesel: A short review

Mardina, Primata; Wijayanti, Hesti; Tuhuloula, Abubakar; Hijriyati, Erita; Sarifah,

doi:10.21924/cst.6.2.2021.460

Cited by 5 publications

(6 citation statements)

References 61 publications

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“…In the third transesterification, the conversion of the methyl ester obtained decreased. This was because there was a decrease in the active side of the MA-900 catalyst after being used repeatedly [62]. From these results, it can be concluded that the MA-900 catalyst that has been synthesized had an optimum activity after being used for transesterification twice.…”

Section: Usability Test On Ma-900 Catalystmentioning

confidence: 89%

“…For the purpose of green chemistry, some researches have focused on the exploration and development of new heterogeneous catalysts from renewable sources [17] to add value to them and reduce the environmental pollution they generate when they are burnt as a cheap fuel. Also, catalysts derived from biomass have certain characteristics such as non-toxicity, biodegradability, containing a variety of mineral constituents, surface area, and pore structure that can be tuned [18].…”

Section: Introductionmentioning

confidence: 99%

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Study of green and sustainable heterogeneous catalyst produced from Javanese Moringa oleifera leaf ash for the transesterification of Calophyllum inophyllum seed oil

Ramdhani,

Wega Trisunaryanti,

Triyono

2023

CST

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The transesterification of Calophyllum inophyllum seed oil into biodiesel using Javanese Moringa oleifera leaf ash catalyst with various reaction conditions has been completed. MA-500 (Moringa ash at 500°C for 3 h) and MA-900 (Moringa ash at 900°C for 3 h) catalysts were obtained by grinding Javanese old Moringa oleifera leaf (MP) and then calcined for 3 h at 500 and 900°C. The crude Calophyllum inophyllum seed oil was degummed (OD) prior to continue the esterification process (ODE). The MA-500 and MA-900 catalysts were tested for their activity and selectivity through the ODE transesterification with various catalyst weights (3, 6, and 9% (w/w)), reaction temperature (55, 60, and 65°C), oil: methanol mole ratio (1:3, 1:6, and 1:9), and reaction time (60, 90, 120, and 150 minutes). The results showed that the MA-500 and MA-900 catalysts contained 18.17% and 52.91% Ca respectively. The esterification reaction could reduce FFA levels to 89.82%, from 19.46% to 1.98%. ODE transesterification with MA-900 catalyst optimum reaction conditions with a catalyst weight of 3%, reaction temperature of 60°C, oil: methanol mole ratio of 1:9, and reaction time of 120 min, 76.17% FAME yield was observed. The MA-900 catalyst has the potential to be an effective green catalyst.

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Section: Usability Test On Ma-900 Catalystmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Study of green and sustainable heterogeneous catalyst produced from Javanese Moringa oleifera leaf ash for the transesterification of Calophyllum inophyllum seed oil

Ramdhani,

Wega Trisunaryanti,

Triyono

2023

CST

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show abstract

“…An insignificant enhancement of FFA conversion (85.29±3.2%) was identified after 18 moles of methanol were added to the reaction system. The excess of alcohol in the esterification system at a particular point could dilute the reaction system (Mardina et al, 2021). It could hinder the mass transfer between solid catalysts and reactants.…”

Section: Esterification Reaction Of Waste Cooking Oilmentioning

confidence: 99%

Corncob-Derived Sulfonated Magnetic Solid Catalyst Synthesis as Heterogeneous Catalyst in The Esterification of Waste Cooking Oil and Bibliometric Analysis

Mardina,

Wijayanti,

Juwita

et al. 2023

Indonesian J. Sci. Technol

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A corncob-derived magnetic solid acid catalyst was synthesized through the sulfonation method and an impregnation process, respectively. In the sulfonation process, the concentrated H2SO4 was utilized as an activation agent to obtain acidic properties. The solution of ferric sulphate-ferrous sulphate was utilized for impregnation to generate the magnetic behaviour of the material. The prepared magnetic acid solid catalyst had a high saturation magnetisation value of 16.48 emu/g and a total acidity of 1.43 mmol/g. The performance of the catalyst was evaluated in the esterification reaction of waste cooking oil. The best result presented 86.12% FFA conversion under reaction conditions of 5% catalyst loading and a 1:15 oil-to-methanol molar ratio at 60oC for 4 h. The catalyst was separated magnetically from the reaction solution and exhibited a good reusability with 61% remaining active after 5 consecutive cycles of reaction. This study resulted in a promising method to obtain magnetic-sulfonated carbon-based catalyst from corncob residue, and it is economical potentially and environmentally friendly for the esterification of low-quality feedstock for biodiesel production.

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“…It cannot be directly discharged into the environment in view of the high organic matter content and tendency to damage the environment [1,2]. Furthermore, 100 kg of glycerol can be obtained in every ton of biodiesel converted from biomass [1] where biodiesel is an alternative green fuel [3]. Also, glycerol presents a particularly attractive renewable and sustainable source for H2 generation.…”

Section: Introductionmentioning

confidence: 99%

Utilization of glycerol solution for hydrogen production by a combination of photocatalysis and electrolysis processes with Fe-TiO2 nanotubes

Santoso,

Ratnawati,

Slamet

2023

CST

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A combination of photocatalysis and electrolysis (photoelectrocatalysis) for the simultaneous degradation of glycerol and hydrogen production using Fe-TiO2 nanotubes has been studied. This photocatalyst was synthesized through Ti anodization followed by Fe deposition with Fe(NO3)3 as precursor using the SILAR (successive ionic layer adsorption and reaction) method. The effects of Fe loading (based on the number of SILAR cycles) on TiO2 nanotubes and glycerol concentration were examined. The generated TiO2 nanotubes were 100% anatase phase with crystallite size between 25 and 29 nm. The results of UV-Vis DRS showed that the number of SILAR cycles of Fe dopant determined the magnitude of the decrease in the band gap of photocatalysts up to 2.74 eV, notably lower than a typical value of 3.15 eV associated with TiO2 anatase. FESEM/EDX, TEM, and HRTEM characterizations indicated the formation of neatly arranged TiO2 nanotubes with Fe deposited on the surface. The photoelectrocatalytic process increased the hydrogen produced by up to 5 times compared to a single photocatalytic or electrolysis process. The photocatalyst sample with Fe deposited on TiO2 nanotubes via a SILAR method with 15 cycles outperformed its bare TiO2 nanotube counterpart by producing hydrogen by 2.5 times (405.8 mmol/m2). Glycerol photo-reforming at 10% concentration produced hydrogen 6 times greater than water splitting (0% glycerol).

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Corncob residue as heterogeneous acid catalyst for green synthesis of biodiesel: A short review

Cited by 5 publications

References 61 publications

Study of green and sustainable heterogeneous catalyst produced from Javanese Moringa oleifera leaf ash for the transesterification of Calophyllum inophyllum seed oil

Study of green and sustainable heterogeneous catalyst produced from Javanese Moringa oleifera leaf ash for the transesterification of Calophyllum inophyllum seed oil

Corncob-Derived Sulfonated Magnetic Solid Catalyst Synthesis as Heterogeneous Catalyst in The Esterification of Waste Cooking Oil and Bibliometric Analysis

Utilization of glycerol solution for hydrogen production by a combination of photocatalysis and electrolysis processes with Fe-TiO2 nanotubes

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