Cor ASTM: um método simples e rápido para determinar a qualidade do biodiesel produzido a partir de óleos residuais de fritura ASTM color: a simple and fast method for determining quality of biodiesel produced from used cooking oils

• Main Authors: Verônica Santos de Morais, Eustáquio Vinícius Ribeiro de Castro, Maria Tereza Weitzel Dias Carneiro, Geisamanda Pedrini Brandão, Reginaldo Fabri Júnior, Denise Rocco de Sena
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2013-01-01
• Series: Química Nova
• Subjects: biodiesel; used cooking oil; ASTM color
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000400018

<abstract language="eng">In this study, 23 biodiesel samples were produced, 20 from used cooking oil and the remaining 3 from refined soybean oil. The following properties were determined in all of the samples (oil and its respective biodiesel): density; viscosity; total acid number and ASTM color. The results indicated high correlation (R > 0.6) between ASTM color of used cooking oil and total acid number of its resultant biodiesel. This high correlation allows prediction of the quality of the biodiesel produced using a simple and fast procedure such as ASTM color.