The role of antioxidants in improving biodiesel's oxidative stability, poor cold flow properties, and the effects of the duo on engine performance: A review

Amran, Nurul Aini; Bello, Usman; Ruslan, Muhammad Syafiq Hazwan

doi:10.1016/j.heliyon.2022.e09846

Cited by 40 publications

(20 citation statements)

References 126 publications

(144 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted that even if cyanobacteria-based biofuels achieve ideal properties, the environment cannot be controlled, which could drastically impact their performance. For instance, lower temperatures could increase oxidative instability, hindering maximal biodiesel power achievement [ 40 ]. Thus, it is essential to consider the environmental conditions to achieve the perfect biodiesel blend.…”

Section: Resultsmentioning

confidence: 99%

Lipid production and cellular changes in Fremyella diplosiphon exposed to nanoscale zerovalent iron nanoparticles and ampicillin

et al. 2023

View full text Add to dashboard Cite

With the dramatic decrease in fossil fuel stocks and their detrimental effects on the environment, renewable energy sources have gained imminent importance in the mitigation of emissions. As lipid-enriched energy stocks, cyanobacteria are the leading group of microorganisms contributing to the advent of a new energy era. In the present study, the impact of Nanofer 25 s nanoscale zero-valent iron nanoparticles (nZVIs) and ampicillin on lipid production and cellular structural changes in Fremyella diplosiphon strain B481-SD were investigated. Total lipid abundance, fatty acid methyl ester (FAME) compositions, and alkene production as detected by high-resolution two-dimensional gas chromatography with time-of-flight mass spectrometry (GC × GC/TOF–MS) was significantly higher (p < 0.05) in the individual application of 0.8 mg/L ampicillin, 3.2 mg/L nZVIs, and a combined regimen of 0.8 mg/L ampicillin and 3.2 mg/L nZVIs compared to the untreated control. In addition, we identified significant increases (p < 0.05) in monounsaturated fatty acids (MUFAs) in F. diplosiphon treated with the combination regimen compared to the untreated control, 0.8 mg/L of ampicillin, and 3.2 mg/L of nZVIs. Furthermore, individual treatment with 0.8 mg/L ampicillin and the combination regimen (0.8 mg/L ampicillin + 3.2 mg/L nZVIs) significantly increased (p < 0.05) Nile red fluorescence compared to the untreated control, indicating neutral membrane lipids to be the main target of ampicillin added treatments. Transmission electron microscopy studies revealed the presence of single-layered thylakoid membranes in the untreated control, while complex stacked membranes of 5–8 layers were visualized in ampicillin and nZVI-treated F. diplosiphon. Our results indicate that nZVIs in combination with ampicillin significantly enhanced total lipids, essential FAMEs, and alkenes in F. diplosiphon. These findings offer a promising approach to augment the potential of using the strain as a large-scale biofuel agent.

show abstract

Section: Resultsmentioning

confidence: 99%

Lipid production and cellular changes in Fremyella diplosiphon exposed to nanoscale zerovalent iron nanoparticles and ampicillin

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Antioxidant additives are introduced to diesel fuel to inhibit the chain reaction of oxidation, preserving fuel quality and preventing the development of harmful byproducts. By maintaining the integrity of the fuel, these additives ensure that the engine receives a consistent and clean fuel supply, which contributes to optimal combustion efficiency, reduced emissions, and extended engine life [49,50]. The usage of antioxidant additives is essential in maintaining fuel stability and preventing the detrimental effects of oxidation in diesel engines, ensuring reliable and efficient operation.…”

Section: Antioxidant Additivesmentioning

confidence: 99%

A Comprehensive Review of the Effect of Additives on Microalgae Biodiesel Performance and Emissions

Srinivasa Vara Prasad,

Murali Krishnam Raju,

Krishna Bhaskar

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The production and utilization of biodiesel derived from microalgae have gained significant attention as a sustainable alternative to fossil fuels. However, the intrinsic properties of microalgae biodiesel can limit its performance and lead to undesirable emissions. This paper summarizes the impact of additives on microalgae biodiesel, focusing on their influence on performance and emissions. Additives play a crucial role in improving the overall quality and efficiency of microalgae biodiesel. They encompass a range of compounds, including antioxidants, stabilizers, and combustion enhancers. These additives have been studied extensively to elucidate their effects on fuel properties, engine performance, and exhaust emissions. By modifying the physicochemical properties of microalgae biodiesel, additives can enhance its stability, cetane number, and oxidative resistance, thereby promoting efficient combustion and reducing emissions of harmful pollutants. This review concludes that the usage of additives to the algae biodiesel leads to improved combustion performance and emission reduction.

show abstract

“…One of the main challenges for the commercial use of biodiesel is its higher tendency to oxidative degradation than fossil fuels . The biodiesel degree of instability depends on the fatty acid profile of the produced FAMEs/FAEEs, the number of intrinsic natural antioxidants, solubility, type of chemical structure, activation energy, and redox-reaction potentials, among others . These properties often determine the biodiesel strengths to resist storage conditions such as light, air, heat, and metal ions, since its degradation occurs through a series of classical free radical chain reactions and makes biodiesel storage for medium–long term use a challenge for the industrial and scientific community. , The oxidation process occurs in three consecutive steps categorized as initiation, propagation, and termination.…”

Section: Introductionmentioning

confidence: 99%

“… 6 These properties often determine the biodiesel strengths to resist storage conditions such as light, air, heat, and metal ions, since its degradation occurs through a series of classical free radical chain reactions and makes biodiesel storage for medium–long term use a challenge for the industrial and scientific community. 5 , 6 The oxidation process occurs in three consecutive steps categorized as initiation, propagation, and termination. The initiation, step 1, can be triggered by thermal decomposition of the hydrocarbon RH or by its reaction with a chemical initiator.…”

Section: Introductionmentioning

confidence: 99%

Vineyard Pruning Extracts as Natural Antioxidants for Biodiesel Stability: Experimental Tests and Preliminary Life Cycle Assessment

Dorosh

Surra

Eusébio

et al. 2023

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

The control of the oxidative stability of biodiesel and blends of biodiesel with diesel is one of the major concerns of the biofuel industry. The oxidative degradation of biodiesel can be accelerated by several factors, and this is most critical in the so-called second generation biodiesel, which is produced from low-cost raw materials with lower environmental impacts. The addition of antioxidants is imperative to ensure the oxidative stability of biodiesel, and these are considered products of high commercial value. The antioxidants currently available on the market are from synthetic origin, so the existence/availability of alternative antioxidants of natural origin (less dependent on fossil sources) at a competitive price presents itself as a strong business opportunity. This work describes and characterizes a sustainable alternative to synthetic antioxidants used in the biodiesel market developed from extracts of vineyard pruning waste (VPW), which are naturally rich in phenolic compounds with antioxidant properties. A hydrothermal extraction process was applied as a more efficient and sustainable technology than the conventional one with the potential of the extracts as antioxidant additives in biodiesel evaluated in Rancitech equipment. The VPW extract showed comparable antioxidant activity as the commercial antioxidant butylated hydroxytoluene (BHT) typically used in biodiesel. The stability of the biodiesel is dependent from the amount of the extract added. Further, for the first time, the assessment of the environmental impacts of using natural extracts to control the oxidative stability of biodiesel in the production process is also discussed as a key factor of the process environmental sustainability.

show abstract

The role of antioxidants in improving biodiesel's oxidative stability, poor cold flow properties, and the effects of the duo on engine performance: A review

Cited by 40 publications

References 126 publications

Lipid production and cellular changes in Fremyella diplosiphon exposed to nanoscale zerovalent iron nanoparticles and ampicillin

Lipid production and cellular changes in Fremyella diplosiphon exposed to nanoscale zerovalent iron nanoparticles and ampicillin

A Comprehensive Review of the Effect of Additives on Microalgae Biodiesel Performance and Emissions

Vineyard Pruning Extracts as Natural Antioxidants for Biodiesel Stability: Experimental Tests and Preliminary Life Cycle Assessment

Contact Info

Product

Resources

About