Suspension Melt Crystallization is one kind of the leading state of the art separation technology for the achievement of high product purity against a low energy consumption, in a sustainable way. Comparing with alternative purification technologies such as (vacuum) distillation and layer melt crystallization, the potential energy savings in the range between 50 to even 90% are quite typical for Suspension Melt Crystallization, varying from product/case to case. Sustainability is an important characteristic of Suspension Melt Crystallization, driven mainly by renewable electricity, no need process aids such as solvents or adsorbents. For L-Lactide (intermediate of PLA) purification, a special advantage is that crude material loss from side-reaction could be reduced by 5-10% by using Suspension Melt Crystallization replacing layer melt crystallization and/or partially replacing distillation, exact value depending on the exact hybrid process configuration.