BIODIESEL ETHYL ESTERS POLI LACTIC ACID FACTORIAL DESIGN TRANSESTERIFICATION PROCESS DEVELOPMENT POLY(LACTIC ACID) ETHYL LEVULINATE ASPEN PLUS SIMULATION LACTIDE PRODUCTION OPTIMIZATION L-LACTIC ACID PRODUCTION BIOETHANOL PROCESS IDENTIFICATION SEPARATION SIMULATION PROCESS EXPERIMENTAL DESIGN SEPARATION PROCESS ETHYL LACTATE FACTORIAL DESIGN OF EXPERIMENTS COTTONSEED OIL PALM OIL LACTIC ACID PROCESS EVALUATION