Biodiesel (BD) is an alternative diesel fuel derived from both vegetable oils and animal fats. Currently, most BD is made by alkali-catalyzed transesterification of a refined oil or fat, the cost of which is the major expenditure in producing BD. Yellow and brown greases are readily available renewable fats that are less expensive and hence represent attractive feedstocks for the production of…
Biodiesel is a renewable, domestically produced fuel that has been shown to reduce particulate, hydrocarbon, and carbon monoxide emissions from diesel engines. Biodiesel produced from certain feedstocks, however, has been shown to cause an increase in nitrogen oxides (NOx), which is of particular concern in urban areas that are subject to strict environmental regulations. There are several …