Energising the E-factor
The E+-factor
F. Tieves (TU Delft - BT/Biocatalysis)
F. Tonin (TU Delft - BT/Biocatalysis)
Elena Fernandez Fernandez Fueyo (TU Delft - BN/Greg Bokinsky Lab, TU Delft - BT/Biocatalysis)
John M. Robbins (Georgia Institute of Technology)
Bettina Bommarius (Georgia Institute of Technology)
Andreas S. Bommarius (Georgia Institute of Technology)
Miguel Alcalde (Institute of Catalysis, CSIC, Madrid)
Frank Hollmann (TU Delft - BT/Biocatalysis)
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Abstract
The E-factor has become an important measure for the environmental impact of (bio)chemical reactions. However, summing up the obvious wastes generated in the laboratory neglects energy-related wastes (mostly greenhouse gases) which are generated elsewhere. To estimate these wastes, we propose to extend the E-factor by an energy-term (E+-factor). At the example of a lab-scale enzyme fermentation, we demonstrate that the E+-factor can constitute a multiple of the classical E-factor and therefore must not be neglected striving for a holistic estimation of the environmental impact.
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