Vu , T.T.H., Do , M.H., Nguyen , Q.M., Hoang , T.H., Nguyen , T.T., Pham , N.P., Nguyen , M.C., Nguyen , V.T., Mai , T.D., Tran , H.N., Dinh , V.N. and Dang , K.H. 2026. Technology development and pilot-scale production of biodiesel production from lipid by-products with high free fatty acid content using heterogeneous catalysts under subcritical methanol conditions. Petrovietnam Journal. 2, (May 2026), 76-87.