Table 2 The biodegradability of some DESs
From: Recent progress on deep eutectic solvents in biocatalysis
DESs | Assay method | Resource of microorganism | DES concentration (mg/L) | Comments | Reference |
|---|---|---|---|---|---|
ChCl/Glc (2:1) ChCl/OA (1:1) ChCl/Gly (1:2) | Closed bottle test | Effluent from an urban wastewater treatment plant | 100 | Over 60% of biodegradation level after 14Â days | Radosevic et al. (2015) |
20 kinds of NADESs | Closed bottle test | Fresh lake water | 3 | All DESs had a biodegradation level over 69.3% after 28Â days. The acid-based DESs were degraded slower than others | Zhao et al. (2015) |
ChCl or ChOAc/U (1:1) ChCl or ChOAc/Gly (1:1) ChCl or ChOAc/A (1:1) ChCl or ChOAc/EG (1:1) | Closed bottle test | Activated sludge from wastewater treatment plant | 4 | Only ChCl/U and ChCl/A were readily biodegradable | Wen et al. (2015) |
ChCl/EG (1:2) ChCl/Gly (1:2) ChCl/U (1:2) DAC/EG (1:2) EAC/Gly (1:2) DAC/MA (1:1) DAC/ZnN (1:1) DAC/ZnCl2 (1:2) | Closed bottle test | Wastewater from secondary effluent treatment plant | 5 | All DESs were referred to as readily biodegradable. ChCl-based DESs had higher biodegradability than DAC-based DESs | Juneidi et al. (2015) |