Table 6.
Effect of suggested formulations on carbon emission (total and breakdown), detergency and cost savings
| Carbon emission (kg CO2 eq) | Original formulation | Suggested formulation 1 | Suggested formulation 2 | Suggested formulation 3 |
|---|---|---|---|---|
| Production of concentrated complex enzyme detergent (total) | 2.53 | 1.98 | 1.60 | 2.87 |
| Electricity | 1.71E-02 | 1.71E-02 | 1.71E-02 | 1.71E-02 |
| Amylase | 1.66E-02 | 1.66E-02 | 1.66E-02 | 1.66E-02 |
| Cellulose | 9.59E-03 | 9.59E-03 | 9.59E-03 | 9.59E-03 |
| Propylene glycol | 2.02E-01 | 2.02E-01 | 2.02E-01 | 2.12E-01 |
| AES | 6.16E-01 | 6.16E-01 | 6.16E-01 | 1.18E + 00 |
| SDS | 3.66E-01 | 3.66E-01 | 3.66E-01 | 6.84E-01 |
| Citric acid | 1.47E-01 | 1.47E-01 | 1.47E-01 | 1.47E-01 |
| Gylcerol | 1.10E + 00 | 5.56E-01 | 1.85E-01 | 5.56E-01 |
| Glycerol transportation | 8.74E-03 | 4.40E-03 | 1.47E-03 | 4.40E-03 |
| HDPE | 4.31E-02 | 4.31E-02 | 4.31E-02 | 4.31E-02 |
| Soft water | 0.00E + 00 | 2.02E-04 | 3.40E-04 | 0.00E + 00 |
| Change ratio of carbon emissions(%) | – | − 21.7 | − 36.7 | + 13.44 |
| Detergency | 86.1 ± 5.2% | 82.2 ± 7.1% | 83.5 ± 5.1% | N/A |
| Cost saving (%) | – | 29.6% | 49.6% | N/A |