Process
In nature, BioPDO is made from the fermentation of glycerol in yeast. However, DuPont has managed to engineer this glycerol functionality into a strain of Escherichia coli bacterium (hence referred to here as "E. coli"), thereby allowing industrial-scale fermentation of glycerol in a bioreactor. After the E. coli bacteria produce sufficient BioPDO product, a method to separate the BioPDO from the cellular broth that comes out of the bioreactor is needed. The separation scheme proposed by DuPont follows the following steps: microfiltration and ultrafiltration, ion exchange, flash evaporation, and distillation.
Read more about this topic: Bioseparation Of 1,3-propanediol
Famous quotes containing the word process:
“Rules and particular inferences alike are justified by being brought into agreement with each other. A rule is amended if it yields an inference we are unwilling to accept; an inference is rejected if it violates a rule we are unwilling to amend. The process of justification is the delicate one of making mutual adjustments between rules and accepted inferences; and in the agreement achieved lies the only justification needed for either.”
—Nelson Goodman (b. 1906)
“The toddlers wish to please ... is a powerful aid in helping the child to develop a social awareness and, eventually, a moral conscience. The childs love for the parent is so strong that it causes him to change his behavior: to refrain from hitting and biting, to share toys with a peer, to become toilet trained. This wish for approval is the parents most reliable ally in the process of socializing the child.”
—Alicia F. Lieberman (20th century)
“There was only one catch and that was Catch-22, which specified that a concern for ones own safety in the face of dangers that were real and immediate was the process of a rational mind.... Orr would be crazy to fly more missions and sane if he didnt, but if he was sane he had to fly them. If he flew them he was crazy and didnt have to; but if he didnt want to he was sane and had to.”
—Joseph Heller (b. 1923)