Feedstock - Raw materials such as vegetable oils (e.g., soybean oil, canola oil) or animal fats used in biodiesel production., Transesterification - Chemical reaction in which triglycerides (from feedstock) react with an alcohol (e.g., methanol) to produce biodiesel and glycerin., Reactor Design - Configuration and specifications of vessels or tanks used to carry out the transesterification reaction at scale., Quality Standards - Established criteria and specifications (e.g., ASTM D6751) for biodiesel product quality, including purity, stability, and performance characteristics., Catalyst - Substance (e.g., sodium hydroxide, potassium hydroxide) used to accelerate the transesterification reaction, improving efficiency and yield., Biodiesel - Renewable fuel produced from transesterification of feedstock, suitable for use in diesel engines., Glycerin - Byproduct of transesterification process, separated from biodiesel and used in various industrial applications., Methanol - Alcohol commonly used as a reactant in transesterification to convert triglycerides into biodiesel., Esterification - Secondary reaction in biodiesel production, involving the conversion of free fatty acids to esters to improve biodiesel quality., Titration - Laboratory technique used to measure the acidity (free fatty acid content) of feedstock or biodiesel prior to transesterification., Free fatty acid - Unbound fatty acids present in feedstock that need to be minimized to meet biodiesel quality standards., distillation - Process used to separate and purify biodiesel from glycerin and other impurities after transesterification., washing - Step in biodiesel production involving the removal of excess methanol, catalyst, and impurities from the biodiesel., acid value - Measurement of the amount of free fatty acids present in feedstock or biodiesel, indicating the level of acidity., flash point - Temperature at which biodiesel emits enough vapor to ignite in the presence of an open flame, an important safety consideration.,

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