A review on the prospects of sustainable biodiesel production: A global scenario with an emphasis on waste-oil biodiesel utilization

Hajjari, Masoumeh; Tabatabaei, Meisam; Aghbashlo, Mortaza; Ghanavati, Hossein

doi:10.1016/j.rser.2017.01.034

Cited by 446 publications

(197 citation statements)

References 115 publications

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“…Among all sort of available biomass, such as triglycerides, terpenes, carbohydrates and lignin, triglycerides are convenient compounds since their use is attainable in the industry for fuel and chemical production in a shorter term . Indeed, the production of biodiesel from triglyceride by transesterification increased significantly in the past few years . Biodiesel is biodegradable, presents low toxicity and is less polluting than petrodiesel .…”

Section: Introductionmentioning

confidence: 99%

The Role of Brønsted and Water‐Tolerant Lewis Acid Sites in the Cascade Aqueous‐Phase Reaction of Triose to Lactic Acid

et al. 2019

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Aqueous‐phase conversion of glyceraldehyde to lactic acid was investigated over Nb2O5, TiO2, ZrO2 and SnO2 in a fixed‐bed up‐flow reactor. Special attention was given to the catalysts acidity regarding the type, amount, strength and tolerance to water of surface acid sites. These sites were assessed by infrared spectroscopy of pyridine adsorbed on dehydrated and hydrated catalysts as well as by isopropanol decomposition. It was found that Nb2O5 and TiO2 have the highest fraction of water‐tolerant Lewis acid sites (40 and 47 %), while only 6 % was estimated for ZrO2. No relevant Lewis acidity was observed on SnO2, but it was noticed the presence of strong base sites. The transformation of glyceraldehyde into lactic acid proceeded via a cascade reaction in which glyceraldehyde is firstly dehydrated to pyruvaldehyde, followed by its rearrangement to lactic acid with the addition of a water molecule. The dehydration step occurs on Brønsted acid sites and/or on water‐tolerant Lewis acid sites. These latter sites also determine the selectivity to lactic acid. Strong base sites promote glyceraldehyde fragmentation leading to formaldehyde with high selectivity.

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Section: Introductionmentioning

confidence: 99%

The Role of Brønsted and Water‐Tolerant Lewis Acid Sites in the Cascade Aqueous‐Phase Reaction of Triose to Lactic Acid

et al. 2019

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“…There has been a great effort to reduce exhaust emissions from the diesel engine burning of fossil fuels . Accordingly, many studies provide various solutions to these threats . Heavy dependence on fossil fuel and high production volume of pollutants and wastes and mismanagement of these pollutants and limit refinement of nature have caused environmental crisis .…”

Section: Introductionmentioning

confidence: 99%

Fuzzy logic method for the prediction of cetane number using carbon number, double bounds, iodic, and saponification values of biodiesel fuels

Ardabili

Najafi

Shamshirband³

2019

Env Prog and Sustain Energy

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The aim of present study is to develop an accessible accurate estimation of CN based on fatty acid methyl esters and to provide a proper solution for presenting a user‐friendly method. In fact, this study calculates the density, viscosity, and HHV based on FAMEs and predicts the CN by employing fuzzy method within a set. This is an interesting approach that has not been used in similar articles. Gaussian membership functions with 81 roles were employed to develop the fuzzy model. The model was developed based on Carbon number, Double bond, Saponification number, and Iodine value to predict the CN. Performance factors of r, RMSE, MAE, and R2 were calculated as 0.9912, 1.0723, 0.63427, and 0.9828, respectively to predict the CN. The results of FAMEs effect on properties of biodiesel showed, increasing Carbon number of FAMEs increases the CN, viscosity, and HHV, but increasing the number of Double bonds decreases CN, viscosity, and HHV. While the effect of increasing Carbon number of FAMEs on density was vice versa. Based on results, C16:00, C18:00, C18:1, and C18:02 FAMEs are approximately in components of all conventional oils; therefore, they can be effective on physical properties of biodiesels. © 2019 American Institute of Chemical Engineers Environ Prog, 38: 584–599, 2019

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“…According to [32] is the homogeneous alkaline catalyst the most effective catalyst for biodiesel production due to the high conversion to product in "mild conditions." Although, the reaction for homogeneous catalyst is fast must the catalyst be neutralized and thus can it not be reused or recovered [33]. Acid-homogeneous catalyst is only used if the FFA is less than 4 %.…”

Section: (2) Catalystmentioning

confidence: 99%

The Suitability of GC-MS Simulated Distillation as Means to Determine the Boiling Range of Biodiesel

2017

Nov. 27-28, 2017 South Africa ASETWM-17, RCABES-17 &Amp; EBHSSS-17

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Abstract-The suitability of GC-MS simulated distillation as means to determine the boiling range of biodiesel is determined in this study. The study is divided into two sections. Various vegetable oils and animal fats where an acid-and/or alkali-catalyst can be used and diluted with an alcohol to produce biodiesel. The produced biodiesel must meet the SANS 1935:2011 standards where it can be used for diesel engine automobiles [1]. The first section is known as the experimental procedure for the production of biodiesel from various feedstock's and the second section includes the distillation experiment of the biodiesel. The distillation procedure followed the same procedure as specified by the ASTM D86 test method. The test method indicates that the distillation unit must operate at atmospheric pressure but the distillation experiments were conducted at ambient pressure of 86.02 kPa for Potchefstroom. The actual distillation curve and the simulated distillation curve for each biodiesel were compared in order to see if the simulated distillation results predict the same boiling points as the actual distillation. This study has shown that the simulated results obtained from the GC-MS can be used to determine the boiling ranges for biodiesel but it can be better accomplished by using vacuum distillation.

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A review on the prospects of sustainable biodiesel production: A global scenario with an emphasis on waste-oil biodiesel utilization

Cited by 446 publications

References 115 publications

The Role of Brønsted and Water‐Tolerant Lewis Acid Sites in the Cascade Aqueous‐Phase Reaction of Triose to Lactic Acid

The Role of Brønsted and Water‐Tolerant Lewis Acid Sites in the Cascade Aqueous‐Phase Reaction of Triose to Lactic Acid

Fuzzy logic method for the prediction of cetane number using carbon number, double bounds, iodic, and saponification values of biodiesel fuels

The Suitability of GC-MS Simulated Distillation as Means to Determine the Boiling Range of Biodiesel

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