TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The system further comprises: a filter disposed downstream from the first strong acid catalyst resin vessel, where the filter receives the treated fatty acid methyl ester stream from the first strong acid catalyst resin vessel and the filter removes solid acid catalyst resin fines from the treated fatty acid methyl ester stream; a second strong acid catalyst resin vessel disposed downstream from the first strong acid catalyst resin vessel, where the second strong acid catalyst resin vessel and the first strong acid catalyst resin vessel are disposed in a lead-lag arrangement; and a methanol stream in fluid communication with the first strong acid catalyst resin vessel so that the methanol stream is operable to purge the first strong acid catalyst resin vessel. The temperature of the fatty acid methyl ester stream is 85-120 degrees F. The solid acid catalyst resin is a solid acid catalyst capable of removing monoglycerides. The system further comprises a vacuum dryer that is configured to separate a fatty acid methyl ester content and a methanol content of the output stream. The fatty acid methyl ester content is recycled into the fatty acid methyl ester stream, where the methanol content is recycled into the methanol stream. Preferred Method: The method further comprises: receiving the treated fatty acid methyl ester stream at a filter; removing solid acid resin catalyst fines from the treated fatty acid methyl ester stream using the filter; disposing a second strong acid catalyst resin vessel downstream from the first strong acid catalyst resin vessel; purging the first strong acid catalyst resin vessel with the methanol stream, where purging the first strong acid catalyst resin vessel produces an output stream, where the output stream substantially comprises methanol and fatty acid methyl esters; separating, using a vacuum dryer, a fatty acid methyl ester content and a methanol content of the output stream; recycling the fatty acid methyl ester content into the fatty acid methyl ester stream; and recycling the methanol content into the methanol stream.