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Energising the E-factor: The E+-factor
- Tieves, Florian, Tonin, Fabio, Fernández-Fueyo, Elena, Robbins, John M., Bommarius, Bettina, Bommarius, Andreas S., Alcalde, Miguel, Hollmann, Frank
- Tetrahedron 2019 v.75 no.10 pp. 1311-1314
- chemical reactions, chemical structure, environmental impact, fermentation, greenhouse gases, organic compounds, wastes
- 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.