Biofuel Extraction Techniques

Preface

Biofuels are viable alternatives to petroleum-based fuel because they are produced from organic materials such as plants and their wastes, agricultural crops, and their by-products. The development of cutting-edge technology has increased the need for energy significantly, which has resulted in an overreliance on fossil fuels. Renewable fuels are the subject of research because of their biodegradability, eco-friendliness, decrease in greenhouse gas (GHG) emissions, and favorable socioeconomic consequences to counteract imitations of fossil fuels.

Depending upon their physical state, biofuels can be classified into solid, liquid, or gas. Examples of solid biofuels are briquettes of biomass and briquetted biochar. Liquid biofuels include bioethanol and biodiesel, and gaseous biofuels include biogas and biomethane, among others. These are only a few examples.

Different extraction techniques are used for the production of biofuels from renewable feedstocks. Biodiesel is a promising biofuel which is produced by the transesterification of plant-based oils. Extraction of oil includes older traditional methods, solvent extraction, mechanical extraction, microwave-assisted, and ultrasonic-assisted methods. The solvent extraction method is more efficient and produces good quality oil. The limitation of this method is time-consuming and very tedious. Many innovative techniques are also used to overcome the limitations of conventional methods. Microwave-assisted and ultrasonic-assisted ...