Comparison of optical spectroscopy techniques for monitoring the stages of thermoxidation of soybean biodiesel

Bussler, Larissa; Izida, T.; Lima, S.M.; Andrade, Luís Humberto da Cunha

doi:10.1016/j.saa.2019.03.040

Cited by 4 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A large number of researches have been carried out to develop fuels from renewable sources, especially the biodiesel. Biodiesel may be produced from many sources available in nature which each of them has unique physicochemical characteristics (Su et al, 2019, Ahmad et al, 2019, Bussler et al, 2019, DeMarini et al, 2019, Kim et al, 2019. The sustainable supply of lowcost raw materials for biodiesel is very important as the production cost of biodiesel is mainly depend on its raw material (Kayode & Hart, 2017).…”

Section: Introductionmentioning

confidence: 99%

Catalytic Cracking of Methyl Ester from Used-Cooking Oil Using Ni-Impregnated Active Charcoal Catalyst

Nazarudin

Ulyarti

Alfernando

et al. 2022

Reaktor

View full text Add to dashboard Cite

Current petroleum energy sources have been starting to diminish along with the increasing a demand in industries and transportations. In the next few years Indonesia is predicted to experience a fuel crisis. One way to solve this problem is to find the alternative energy sources from renewable raw materials. This study was conducted to obtain alternative renewable energy sources through catalytic cracking of used cooking oil-derived methyl ester into biofuel using active charcoal catalyst. The active charcoal was made out of solid waste (shells) of the oil palm industry. Nickel solutions of varying concentrations (1%, 2%, 3%) ware impregnated into active charcoal to produce the Ni- charcoal catalyst. This catalyst was then used for catalytic cracking of methyl esters with variations in the reaction temperature of 400oC, 450oC and 500oC. The Methyl ester was produced from filtered used-cooking oil by transesterification method. SEM-EDX analysis showed that Nickel metal was successfully embedded into active charcoal where the highest concentration of Nickel (18.4%) was found at a impregnation treatment using 2% of Nickel solution. From the SEM image, it can also be seen that the catalyst produced unique pores. The gravimetric analysis of the catalytic cracking product showed that the highest fraction of oil liquid resulting from catalytic cracking at 400oC using Ni-charcoal catalyst impregnated with 3% Nickel solution.

show abstract

Section: Introductionmentioning

confidence: 99%

Catalytic Cracking of Methyl Ester from Used-Cooking Oil Using Ni-Impregnated Active Charcoal Catalyst

Nazarudin

Ulyarti

Alfernando

et al. 2022

Reaktor

View full text Add to dashboard Cite

show abstract

“…This is a negative fact since when stored or even transported there is the possibility of formation of undesirable products as aldehydes, ketones, short-chain fatty acids, polymers and other products resulting from the oxidation. 7,8 The oxidation reaction may be caused by contact with air, exposure to light, high temperatures and the presence of some transition metals. 8 From the production period to the consumer, biodiesel can be contaminated with metal ions that can be derived from a variety of sources, such as the copper heat exchangers used in the biodiesel production, 9 the storage or transport containers where contamination occurs by direct contact with the container surface or by metallic sediment from the oxidation process.…”

Section: Introductionmentioning

confidence: 99%

“…7,8 The oxidation reaction may be caused by contact with air, exposure to light, high temperatures and the presence of some transition metals. 8 From the production period to the consumer, biodiesel can be contaminated with metal ions that can be derived from a variety of sources, such as the copper heat exchangers used in the biodiesel production, 9 the storage or transport containers where contamination occurs by direct contact with the container surface or by metallic sediment from the oxidation process. 10,11 The presence of transition metal ions catalyzes the oxidation reaction decreasing the biodiesel induction period.…”

Section: Introductionmentioning

confidence: 99%

The Catalytic Action of Copper Ions and the Rosemary Extract Antioxidant Effect in the Biodiesel Oxidation Reaction and the Implication in Arrhenius Behavior

Spacino

Mantovani

Marcheafave

et al. 2020

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Biodiesel contains esters in its composition which make it susceptible to oxidation. Among the factors that cause this reaction is the contamination with metal ions. In the present work, it was analyzed biodiesel samples obtained from a mixture containing 39.0% m/m soybean oil, 22.0% m/m beef tallow and 39.0% m/m poultry fat using a methyl route. Copper ions were added to the biodiesel to evaluate its catalytic action in the oxidation reaction, in the presence and absence of rosemary extract. During 192 h of assay, samples containing copper, without extract, showed shorter induction periods, higher rate constants and lower activation energy, when compared to samples containing extract, at the same assay temperature. Copper ions presented a strong catalytic action causing linearity deviations showing a super-Arrhenius behavior, while rosemary extract delayed the oxidative process and showed no linearity deviations.

show abstract

Vegetable tannins-based additive as antioxidant for biodiesel

Schaumlöffel

Fontoura

Santos

et al. 2021

Fuel

View full text Add to dashboard Cite

Comparison of optical spectroscopy techniques for monitoring the stages of thermoxidation of soybean biodiesel

Cited by 4 publications

References 25 publications

Catalytic Cracking of Methyl Ester from Used-Cooking Oil Using Ni-Impregnated Active Charcoal Catalyst

Catalytic Cracking of Methyl Ester from Used-Cooking Oil Using Ni-Impregnated Active Charcoal Catalyst

The Catalytic Action of Copper Ions and the Rosemary Extract Antioxidant Effect in the Biodiesel Oxidation Reaction and the Implication in Arrhenius Behavior

Vegetable tannins-based additive as antioxidant for biodiesel

Contact Info

Product

Resources

About