Energising the E-factor
The E+-factor
Florian Tieves (TU Delft - BT/Biocatalysis)
Fabio Tonin (TU Delft - BT/Biocatalysis)
Elena Fernández-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 (Instituto de Catálisis y Petroleoquímica - CSIC)
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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